1 Introduction

With the rapid development of industrialization, organic dyes as a serious water pollutant are applied in various industries including textiles, leather, paper-making, pigments and cosmetics [1, 2], statistically with more than 7 × 105 tons of dyes produced annually around the world, about 12% of which are lost during the processing process and approximately 20% of which are discharged with effluent. Generally speaking, the water coloration will be observed even when the dye concentration is lower than 1 ppm [3,4,5] and it is well-known that the presence of dyes in waste water has a negative effect on aquatic environment and also causes a serious health risks to human beings and animals [6], the total or partial removal of organic dyes which is vital for the treatment of effluent. Various techniques for the removal of dyes have been developed, including electrooxidation, ozonation, ion exchange, microbial degradation, photocatalytic degradation, etc [7], compared with which, adsorption technique has attracted extensive investigation due to its low consumption of energy, simple operation, low cost as well as the universality for diverse dyes [8].

Recently, porous nanostructured materials as adsorbent of organic dyes have been one of the most extensively studied materials owing to its large surface and abundant active sites [9], of which SBA-15 materials as a typical representative representing suitable support exhibit well-aligned nanochannels, high surface area, large pore diameter and excellent thermal stability [10], with its modification by metal atoms, including Zr [11], Ti [12], Al [13], Fe [14], widely reported in the adsorption and catalytic fields, and particularly investigations to Ti-SBA-15 used for effective removal of organic dyes from a system attracting more attentions of reaesrchers [15]. Zhang and his group [16] prepared a series of Ti-containing SBA-15 samples in the self-generated acidic condition with catalytic tests indicating that Ti-SBA-15 showed much higher photodegradation ability towards RhB than pure TiO2 and the work from Swapan K. Das et al. [17] showed that synthesized Ti-SBA-15 with higher surface area than that of pure SBA-15, possessed larger H2 uptake at higher external pressure and excellent efficiency in photocatalytic degradation of methylene blue, which indicate that the introduction of heteroatoms in SBA-15 materials is a promising approach to enhance the SBA-15 properties.

Compared to monometallic mesoporous materials, the incorporation of multi-heteroatoms into mesoporous SBA-15 framework could create new active sites and show better performance of activity and stability [18, 19]. Although much progress has been made in synthesizing bimetallic Ti-based mesoporous materials, research to Zr support on Ti-SBA-15 materials [15, 17, 20] has been rare, exemplified by a series of novel multifunctionalized Zr-Ti-SBA-15 ionic liquid filled ordered channels have been synthesized by post-grafting [21], contrasted by findings that the specific surface area of SBA-15 strongly decreases after introduction of titanium and zirconium atoms into its framework. Zr-Ti-SBA-15 synthesized via hydrothermal method has also been reported by K. Chandra Mouli et al. [22], by comparing the hydrodenitrogenation (HDN) and hydrodesulphurization (HDS) conversion of Zr-Ti-SBA-15 coming to the conclusion that the increase in HDN conversion is mainly attributable to the incorporation of Zr and Ti in the framework, while the decrease in HDS conversion originates from the poor dispersion of metal on the supports. Therefore, preparing a bimetallic mesoporous material with uniform distribution via a simple method is rational and quite necessary to modify the specific properties of mesoporous material, incorporating heteroatoms into which is through direct synthesis and post synthesis methods, with the former more relatively convenient and controllable than the latter [23].

In this work, a combination of the “masking mechanism” from tanning and the use of lactic acid as masking agent is used to synthesize a homogenous Zr and Ti co-doped SBA-15, with characterization results showing that the incorporation of lactic acid endows the even distribution of Zr and Ti in the SBA-15 framework, and no metal oxides are observed in Zr-Ti-SBA-15 samples. The mesostructure and morphology of the sample is characterized by XRD, N2 adsorption-desorption isotherm, TEM and SEM, and the surface chemical environment is analyzed via XPS and EDS mapping. MB adsorption on Zr-Ti-SBA-15 materials and the reusability of Zr-Ti-SBA-15 are studied as well.

2 Experimental section

2.1 Materials

The structure-directing agent of triblock copolymer P123 (M = 5800) was provided by Aladdin reagent. Ethyl tetrasilicate (TEOS) (C8H20O4Si ≥ 98.0%) and lactic acid (CH3CH(OH) COOH 85.0 ~ 90.0%) were used as the silicon source and masking agent, respectively. These chemicals along with sodium chloride (NaCl ≥99.5%) were purchased from Tianjin Hengxing Chemical Co., Ltd. Zirconium sulfate (Zr (SO4)2·4H2O ≥ 98.0%), and titanium sulfate (Ti (SO4)2) acted as zirconium and titanium source, respectively, were obtained from Tianjin Guangfu Fine Chemicals. Methylene blue (C16H18CIN3S·3H2O ≥ 98.5%, M = 373.90) was supplied by Tianjin Tianli Chemical Reagent Co., Ltd. All experimental chemicals were used without being further purified.

2.2 Preparation of Zr-Ti -SBA-15

In a typical synthesis, 2 g of Pluronic 123 and 1.18 g of sodium chloride were dissolved in deionized water (60 mL) with stirring at 40 °C, and subsequently 4.5 mL of tetraethylorthosilicate (TEOS) was added dropwise and prehydrolyzed for 4 h. Next, lactic acid (the molar ratio of masking agent and zirconium sulfate was 32:1) was dissolved in a solution containing zirconium sulfate (1.44 g) and titanium sulfate (0.96 g), with clear solution obtained after stirring for a few hours. After this, the so-formed solution was added to the prehydrolyzed solution and kept stirring at the same temperature for 24 h. Then the hydrolysis was allowed to continue for another 24 h at 40 °C. After hydrolysis, the solution was transferred into an autoclave with a polytetrafluoroethylene liner and then placed in an oven for 24 h at 90 °C for a hydrostatic reaction. After the reaction, the product was filtered, washed with deionized water, and dried in an oven at 50 °C. Eventually, the dried product was calcined in air at 250 °C, 500 °C and 600 °C for 3, 3 and 1 h, respectively. Besides, a control samples was also prepared without adding any masking agent, denoted as Zr-Ti-SBA-15-C0 (seen in Fig. 1).

Fig. 1
figure 1

Schematic illustration of synthesis process of Zr-Ti-SBA-15

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2.3 Characterization of Zr-Ti-SBA-15

X-ray diffraction (XRD) patterns were obtained on a D8 Advance (Bruker) powder diffractometer with Cu-Kα radiation (λ = 0.154 nm). The wide-angle XRD patterns were carried out over a 5° ~ 80° 2θ range using a step size of 0.02° with the counting time of 0.1 s per step and low-angle XRD scans were performed at scanning velocity of 0.005 deg. s− 1 over a 2θ range from 0.5° to 5°.

The textural properties including specific surface area (SBET), pore diameter (DBJH) and pore volume (VBJH) of samples were evaluated from the N2 adsorption-desorption experiment, before which the sample was degassed at 200 °C for 4 h under vacuum (10− 3 Torr). The specific surface area was obtained from the adsorption branch using a multipoint Brunauer-Emmett-Teller (BET) method in the relative pressure ranging from 0.05 to 0.30. The pore size distribution was estimated from the N2 desorption isotherm using the Barrett-Joyner-Halenda (BJH) model.

The morphology of the pore structure of the Zr-Ti-SBA-15 sample was visually characterized via transmission electron microscope (TEM) on FEI Tecnai G2 F20 S-TWINFEI. Before the measurement, samples were ultrasonically dispersed in ethanol and a drop of the suspension was deposited on the carbon-coated copper mesh. Energy disperse spectroscopy mapping (EDS mapping) was performed on a FEI Tecnai G2 F20 S-TWINFEI instrument at an accelerating voltage of 20 KV to measure the elemental composition and distribution of Zr-Ti-SBA-15. Scanning electron microscopy (SEM) on a FEI Verious 460 was used to examine the surface morphology of synthesized Zr-Ti-SBA-15 samples.

The chemical states of the elements were detected by X-ray photoelectron spectroscopy (XPS), which were recorded on AXIS SUPRA. The monochromatic Al Kα radiation X-ray source (hν = 1486 eV) and Ar were used as ion source. The value of binding energy was corrected using C1s peak (284.6 eV), and the deconvolution of the obtained XPS spectral curve was analyzed via Casa XPS program.

Inductively coupled plasma atom emission spectroscopy (ICP/AES) was carried out to analyze the leaching of metal elements in the filtrate during desorption process. The data was detected on a IRIS Intrepid 2 Inductively Coupled Plasma-Atomic Emission Spectrometer, and filtrates were dissolved in the concentrated nitric acid solution prior to test.

2.4 Adsorption measurement

In order to detect the adsorption capacity of Zr-Ti-SBA-15, a concentration of 10, 30, 50, 70 and 90 mg/L of MB solution was prepared, and 50 mg of Zr-Ti-SBA-15 was added to the above solution. Under suitable conditions, all solution samples were shaken in a thermostat oscillator at 160 rpm to ensure effective mass transfer during adsorption process. After adsorption equilibrium, the sample was centrifuged for 5 min at a rate of 4000 rpm and its supernatant was taken. The absorbance intensity of each solution was measured by a UV–vis spectrophotometer (UV-1700, Shimadzu Scientific Instrument Inc., Japan) at a wavelength of 664 nm. The standard curve obtained by concentration and absorbance was applied to calculate the concentration of MB. The adsorption process was analyzed by adsorption kinetics and adsorption thermodynamics.

2.5 Regeneration experiment

The regeneration ability of Zr-Ti-SBA-15 was evaluated by hydrochloric acid (0.01 mol L− 1) as eluent. The prepared Zr-Ti-SBA-15 samples were reused for adsorption-desorption cycles, reusability of which is determined by application of the MB removal and the filtrates were collected to identify the metal concentration during the desorption process.

3 Results and discussion

3.1 XRD characterization

The X-ray diffraction pattern of all samples is depicted in Fig. 2a-b. In the wide-angle pattern (Fig. 2a), all samples exhibit a broad diffraction peaks at 2θ = 20° ~ 30° which is assigned to the amorphous silica framework [24]. A serious of peaks around 2θ = 30°, 50°, 60°, 25°, 48°, 55° and 62° corresponding to pure ZrO2 and TiO2 crystal, is observed on Zr-Ti-SBA-15-C0, but no distinct diffraction peak is found in Zr-Ti-SBA-15, implying that there is no crystallized ZrO2 and TiO2 formed in the Zr-Ti-SBA-15 sample, which may be contributed to the excellent masking ability of lactic acid for zirconium sulfate and titanium sulfate, leading to a lower hydrolysis rate of zirconium sulfate and titanium sulfate.

Fig. 2
figure 2

XRD patterns a wide-angle, b low-angle

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The low-angle XRD patterns of SBA-15, Zr-Ti-SBA-15-C0 and Zr-Ti-SBA-15 are shown in Fig. 2b. For SBA-15 and Zr-Ti-SBA-15 samples, three well-resolved characteristic diffraction peaks centered at 0.9°, 1.5° and 1.7° can be obviously observed, corresponding to (100), (110) and (200) planes, respectively, which are typical diffraction peaks of the mesoporous material (SBA-15). This reveals that the incorporation of zirconium and titanium doesn’t disturb the long rang order of SBA-15 [25]. Furthermore, there are no evident peaks in Zr-Ti-SBA-15-C0, which may be due to the formation of titanium dioxide and zirconia partly destroyed the ordered structure of the SBA-15 [26], visually proved by TEM images (Fig. 4) visually. The XRD texture properties of Zr-Ti-SBA-15 are displayed in Table 1. As it can be seen that both of the lattice spacing and wall thickness increase when the heteroatoms are doped, suggesting that Zr and Ti atoms have successfully incorporated into silica framework.

Table 1 XRD texture properties of the samples
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3.2 N2 adsorption-desorption

The adsorption-desorption isotherms of the all samples were recorded using nitrogen as the carrier gas and shown in Fig. 3a. According to the IUPAC classification, a standard type IV classification of mesoporous materials is exhibited for both samples [27]. Additionally, a sharp inflection appears at a relative pressure of 0.6–0.8 P/P0, demonstrating the uniform pores of the N2 capillary condensation. Furthermore, the isotherms of all the samples display H1 hysteresis loops type, suggesting the mesoporosity existence for the samples [28], which is consistent with the corresponding pore size distribution plots (as depicted in Fig. 3b). However, the branch of H1 hysteresis loop for Zr-Ti-SBA-15 is parallel and almost vertical against the abscissa, revealing that Zr-Ti-SBA-15 possesses highly pore structure. The textural properties of all samples including specific surface area, pore diameter and pore volume were calculated and summarized in Table 2. It can be seen that the Zr-Ti-SBA-15 samples possess higher surface area than those of the SBA-15 and Zr-Ti-SBA-15-C0, which could be concluded that as-synthesized materials might provide a larger contact area (i.e. many active sites) to enhance the adsorption or catalysis ability [29].

Fig. 3
figure 3

N2 adsorption-desorption isotherm (a) and pore size distributions (b)

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Table 2 Textural parameters of the samples
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3.3 TEM and SEM characterization

The pore channel morphology of all samples was displayed visually by TEM images and the results were presented in Fig. 4. The well-ordered pore array and hexagonal structure are obviously observed in SBA-15 and Zr-Ti-SBA-15 samples. However, some black bulky dots can be seen in Zr-Ti-SBA-15-C0, which are probably attributed to the formation of metal oxide particles [30]. Above results are well matched with those obtained from XRD and N2 adsorption-desorption measurements.

Fig. 4
figure 4

TEM images a SBA-15, b Zr-Ti-SBA-15, c Zr-Ti-SBA-15-C0

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SEM (Fig. 5) reveals that the morphology of Zr-Ti-SBA-15 is similar to that of SBA-15, which is composed of many “rope-like” domains with relatively uniform sizes of ~ 1 um and further aggregates into “wheat-like” macrostructures, indicating that the original shape of SBA-15 is reserved in Zr-Ti-SBA-15 [31, 32]. On the contrary, the morphology of Zr-Ti-SBA-15-C0 is partly distorted, which is mainly attributed to the uneven distribution of Zr and Ti. This inference was also evidenced from EDS analysis that will be discussed later.

Fig. 5
figure 5

SEM images a SBA-15, b Zr-Ti-SBA-15, c Zr-Ti-SBA-15-C0

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3.4 EDS characterization

To get a better insight into the distribution situation of heteroatoms in the Zr-Ti-SBA-15 and Zr-Ti-SBA-15-C0, EDS mapping was performed with above samples. As shown in Fig. 6, the dispersion of Zr and Ti is homogenous and no phase separation is observed in the case of Zr-Ti-SBA-15 rather than Zr-Ti-SBA-15-C0. Whereas, the uneven distribution without masking agent is caused by rapid hydrolysis of zirconium sulfate and titanium sulfate [31]. EDS analysis result indicates that Zr and Ti atoms are successfully incorporated into SBA-15 framework, and also confirms that lactic acid plays an important role in synthesizing uniform distribution of metal ions, which is consistent with SEM results.

Fig. 6
figure 6

EDS-mapping images a Zr-Ti-SBA-15, b Zr-Ti-SBA-15-C0

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3.5 XPS characterization

The different environments of zirconium and titanium species onto Zr-Ti-SBA-15 and Zr-Ti-SBA-15-C0 were determined by XPS measurement. The high-resolution XPS spectra of Zr 3d are presented in Fig. 7. According to literature, the binding energies of Zr 3d3/2 and Zr 3d5/2 for bulk ZrO2 are around 182.4 eV and 185.3 eV. Compared with Fig. 7b, the Zr-O-Si line is presented in Zr 3d spectra of Zr-Ti-SBA-15, demonstrating that Zr has successfully incorporated into SBA-15 silica framework [33]. In addition, the Zr 3d spectra of Zr-Ti-SBA-15 clearly shows doublets appearing around 185.7 eV and 183.2 eV, which is assigned to Zr 3d3/2 and Zr 3d5/2, respectively. The shift to higher binding energy for Zr 3d in Zr-Ti-SBA-15 samples could be on account of the formation of Zr-O-Si bond because of the higher electronegativity of the Si atom than that of the Zr atom. Based on above results, it is proposed that the Zr species could be in the silica framework rather than in bulk ZrO2 [34, 35].

Fig. 7
figure 7

XPS spectra of the samples in the Zr 3d region a Zr-Ti-SBA-15, b Zr-Ti-SBA-15-C0

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To profoundly discuss the environment of titanium in samples, the deconvolution of XPS spectra of Ti 2p was further explored as exhibited in Fig. 8. Compared with Zr-Ti-SBA-15, the XPS spectrum of Zr-Ti-SBA-15-C0 presents a strong peak centered at 458.2 eV corresponding to the existence of large amounts of TiO2. However, the presence of one component (Fig. 8a) of Ti 2p in the Zr-Ti-SBA-15 sample might indicate that practically all Ti atoms have been incorporated into the SBA-15 framework [36]. These results are also supported by XRD data of the samples.

Fig. 8
figure 8

XPS spectra of the samples in the Ti 2p region a Zr-Ti-SBA-15, b Zr-Ti-SBA-15-C0

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4 Adsorption measurement of Zr-Ti-SBA-15

To unveil a potential adsorption activity, the obtained Zr-Ti-SBA-15 samples toward the organic dye from aqueous solution were tested in a batch experiment by choosing MB as the model organic dye. The effect of time, adsorbent dosage, pH and initial concentration of MB were investigated, as shown in Additional file 1: Figure S1. Obviously, the adsorption equilibrium time of MB on Zr-Ti-SBA-15 was established within 20 min in Additional file 1: Figure S1a, which according to previous work, this rapid adsorption at the initial stage is attributed to the large number of active sites on the adsorbent surface [37]. Furthermore, the increasing amount of adsorbent dosage is favorable for adsorption process, whereas the removal rate has no obvious change with the dosage increases (> 0.5 g L− 1).

The solution pH is an important parameter for the adsorption process. The zero charge of the Zr-Ti-SBA-15 sample is shown in the inset of Additional file 1: Figure S1c, and the pHpzc is 5.6. As seen from Additional file 1: Figure S1c, the maximum adsorption capacity of the Zr-Ti-SBA-15 was observed at pH = 6, which is owing to the electrostatic interaction between the MB and the surface of Zr-Ti-SBA-15 samples [38]. From Additional file 1: Figure S1d, it is noted that the adsorption efficiency of MB is greater than that of high concentration of MB, which could be explained by the fact that the adsorption sites is gradually occupied with increase of initial concentration of MB.

4.1 Kinetic analysis

To further understand the adsorption mechanism of MB on the Zr-Ti-SBA-15 samples, two most commonly kinetic models, namely the pseudo-first-order (PFO) and pseudo-second-order (PSO) model, were applied here to fit the experimental data attained from batch experiments [39]. The corresponding linear equations are described as (1)–(2), consecutively.

$$ \mathrm{t}/{q}_t=1/{k}_2{q^2}_e+t/{q}_e $$
(1)
$$ \log \left({q}_e-{q}_t\right)=\log {q}_e-{k}_1\times t/2.303 $$
(2)

Where qt(mg g‐1) is the amount of adsorbate at time t; k1(min−1) is the rate constant of the PFO adsorption process; t is adsorption time; m (g L‐1) means adsorbent concentration; qe (mg/g) is the equilibrium adsorbance of the adsorbent; k2 [g (mg ⋅ min)− 1] represents the rate constant of the PSO adsorption process.

The PFO and PSO plots are fitted by linear regression of the experimental data for MB on the mesoporous Zr-Ti-SBA-15 samples, as shown in Fig. 9a, b. Comparatively, it is found that the kinetic data could be best fitted into the PSO. The calculated parameters from kinetic models were presented in Table 3. Obviously, the correlation coefficient (R2 > 0.999) values of the PSO is considerably higher than that of the PFO [40]. Meantime, the calculated equilibrium adsorbance (qe,cal) of the PSO is extremely close to the corresponding experimental equilibrium adsorbance (qe,exp). This indicates that, the adsorption behavior of MB on the Zr-Ti-SBA-15 samples takes place in consistence with PSO kinetic model, resulting from the chemical adsorption related to the valence forces by sharing or exchanging electrons between the MB and adsorbents [41].

Fig. 9
figure 9

Adsorption kinetics model of MB on Zr-Ti-SBA-15 a pseudo-first-order, b pseudo-second-order

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Table 3 The pseudo-first-order and pseudo-second-order kinetic model parameters for MB adsorption on Zr-Ti-SBA-15 composite
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4.2 Adsorption isotherms

As is known to all, the adsorption isotherm is an important isotherm to understand the interaction between adsorbent and adsorbate. Thus, Langmuir and Freundlich isotherms were fitted in our work to analyze the adsorption of MB on the as-prepared Zr-Ti-SBA-15 [39]. The equations are as follows:

$$ {C}_e/{q}_e=1/{bq}_m+{C}_e/{q}_m $$
(3)
$$ \log {q}_e=\log\ {k}_f+1/n\log\ {C}_e $$
(4)

Where qe (mg/g) is the amount of dye adsorbed per unit; Ce(mg L‐1) means concentration at adsorption equilibrium; qm (mg/g) is the maximum adsorption capacity; b (L mg‐1) is Langmuir constant; kf is adsorption amount per unit concentration; 1/n is generally between 0 and 1, and the size of the value indicates the stringency of the adsorption capacity.

Two adsorption isotherms plots were depicted in Fig. 10, and the related parameters of adsorption isotherms calculated from above mentioned equations are listed in Table 4. The results indicate that Langmuir model is more suitable to describe the adsorption behavior of MB on Zr-Ti-SBA-15, and the surface of Zr-Ti-SBA-15 is homogeneous with the adsorption mechanism of monolayer uptake [42]. As also seen in Table 4, the adsorption capacities of Zr-Ti-SBA-15 for MB are varied in the range of 275.5~291.6 mg/g. In comparison to some adsorbents for MB in previous literature, it can be stated that our findings are remarkably good (Table 5).

Fig. 10
figure 10

Adsorption isotherm of MB on Zr-Ti-SBA-15 a Langmuir, b Freundlich

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Table 4 Isothermal parameters for MB adsorption on Zr-Ti-SBA-15 composite
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Table 5 Comparison of the maximum adsorption capacity of different adsorbents
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4.3 Thermodynamics analysis

To comprehend the effect of temperature on the adsorption of MB onto present Zr-Ti-SBA-15, Gibbs free energy (∆G°), enthalpy change (∆H°), entropy change (∆S°) were examined. The Langmuir isotherm was applied to calculate thermodynamics parameters [43]; the equation was given as follows:

$$ \mathit{\Delta G}{}^{\circ}=-\mathrm{RTlnb} $$
(5)
$$ \mathrm{lnb}=\frac{\Delta \mathrm{S}{}^{\circ}}{R}-\frac{\Delta \mathrm{H}{}^{\circ}}{RT} $$
(6)

Where b is the Langmuir equilibrium constant (L mol‐1); R represents the gas constant (8.314J (mol K)‐1).

The related thermodynamic parameters at various temperatures were given in Table 6. The negative values demonstrate the feasibility of the adsorption process and the spontaneous. Moreover, it is found that the value of ∆G° decreases when temperature increase, implying that adsorption of MB on Zr-Ti-SBA-15 is favored at higher temperature. The positive value of ∆H° demonstrates that the adsorption reaction is endothermic. Likewise, the value of ∆S° is positive, reflecting some structural change in MB and Zr-Ti-SBA-15 and the affinity for MB [44].

Table 6 The values of thermodynamics parameters for MB adsorption on Zr-Ti-SBA-15
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4.4 Regeneration experiment of Zr-Ti-SBA-15

In practical application, regeneration and stability of products are of importance. The adsorption-desorption experiments of the Zr-Ti-SBA-15 were conducted, as given in Fig. 11. With consecutive adsorption-desorption process, the renewable Zr-Ti-SBA-15 also exhibits satisfactory adsorption rate with a value of 6.0%, which is slightly lower than that of initial samples after six cycles. To explore the reason for the reduction of adsorption ability for Zr-Ti-SBA-15, the filtrate after desorption was characterized by ICP. As shown in Table 7, the low concentration of Zr and Ti released into filtrate were detected, suggesting that the reduction of adsorption ability on Zr-Ti-SBA-15 is mainly caused by partial deletion of active site. In summary, the as-obtained Zr-Ti-SBA-15 materials with desirable reusability and recyclability possess highly efficient-stable adsorption activity for the removal of MB from mimic waste water.

Fig. 11
figure 11

Effect of recycle times on MB removal rate

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Table 7 The leaching data of Zr and Ti during desorption process
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5 Conclusion

Zr-Ti-SBA-15 with large specific surface area has been synthesized via a simple method. By using lactic acid as masking agent, Zr and Ti atoms were successfully incorporated homogenously into the SBA-15 framework, and no oxides particles were observed in Zr-Ti-SBA-15 samples, as demonstrated by all the characterizations. Meantime, MB adsorption capacity on as-prepared Zr-Ti-SBA-15 is measured to be much higher (291.6 mg/g) and faster (20 min) than that of other adsorbents reported in the literatures, exhibiting the excellent adsorption performance of Zr-Ti-SBA-15. Additionally, such materials have also shown such fantastic stability that it could be reused for 6 times without obvious variation in adsorption activity. Based on the results obtained, the adsorption mechanism of MB on Zr-Ti-SBA-15 could be appropriately described by the adsorption isotherm of Langmuir and pseudo-second-order kinetic model, demonstrating the MB adsorption on Zr-Ti-SBA-15 is monolayer uptake and chemical adsorption, respectively. Furthermore, thermodynamic analysis indicates that its adsorption reaction is an endothermic and spontaneous process. This work suggests that the as-prepared Zr-Ti-SBA-15 may serve as promising dual functional materials for environmental pollution cleanup.