Abstract
In this study, flake-like MoO3-ZnO composite was prepared using a simple and robust electrochemical setup. The composite was characterized by X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, elemental analysis, X-ray photoelectron spectroscopy, thermogravimetric analysis, photoluminescence, zeta potential analysis, and electrochemical impedance study. The modified ZnO shows a remarkable catalytic activity towards the photodegradation of three potentially hazardous dyes, malachite green, crystal violet, and methylene blue. More than 95% of both malachite green and crystal violet degraded within 140 min under visible light irradiation. Scavenger studies reveal that OH· radicals produced by the photo-separated charges on MoO3-ZnO are responsible for the degradation of all three dyes. The photoactive charge carriers show less recombination rate as evidenced by the photoluminescence spectrum due to the interparticle charge migration process. This work suggests a new versatile procedure for the synthesis of MoO3-ZnO composites and establishes its photocatalytic efficacy under visible light with three common pollutant dyes found in wastewater.
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References
Arribas P, García-Payo MC, Khayet M, Gil L (2019) Heat-treated optimized polysulfone electrospun nanofibrous membranes for high performance wastewater microfiltration. Sep Purif Technol 226:323–336. https://doi.org/10.1016/j.seppur.2019.05.097
Asiltürk M, Sayilkan F, Arpaç E (2009) Effect of Fe3+ ion doping to TiO2 on the photocatalytic degradation of Malachite Green dye under UV and vis-irradiation. J Photochem Photobiol A Chem 203:64–71. https://doi.org/10.1016/j.jphotochem.2008.12.021
Bai L, Wang S, Wang Z, Hong E, Wang Y, Xia C, Wang B (2019) Kinetics and mechanism of photocatalytic degradation of methyl orange in water by mesoporous Nd-TiO2-SBA-15 nanocatalyst. Environ Pollut 248:516–525. https://doi.org/10.1016/j.envpol.2019.02.052
Berg JM, Romoser A, Banerjee N, Zebda R, Sayes CM (2009) The relationship between pH and zeta potential of ∼ 30 nm metal oxide nanoparticle suspensions relevant to in vitro toxicological evaluations. Nanotoxicology 3:276–283. https://doi.org/10.3109/17435390903276941
Brillas E, Martínez-Huitle CA (2009) Decontamination of wastewaters containing synthetic organic dyes by electrochemical methods : A general review. Appl Catal B Environ 87:105–145. https://doi.org/10.1016/j.apcatb.2008.09.017
Chaudhari SM, Gawal PM, Sane PK, Sontakke SM, Nemade PR (2018) Solar light-assisted photocatalytic degradation of methylene blue with Mo/TiO2: a comparison with Cr- and Ni-doped TiO2. Res Chem Intermed 44:3115–3134. https://doi.org/10.1007/s11164-018-3296-1
Chen Q, Chen L, Qi J, Tong Y, Lv Y, Xu C, Ni J, Liu W (2019) Photocatalytic degradation of amoxicillin by carbon quantum dots modified K2Ti6O13 nanotubes: effect of light wavelength. Chin Chem Lett 30:1214–1218. https://doi.org/10.1016/j.cclet.2019.03.002
De Jongh PE, Meulenkamp EA, Vanmaekelbergh D, Kelly JJ (2000) Charge carrier dynamics in illuminated, particulate ZnO electrodes. J Phys Chem B 104:7686–7693. https://doi.org/10.1021/jp000616a
de Moraes NP, Silva FN, da Silva MLCP, Campos TMB, Thim GP, Rodrigues LA (2018) Methylene blue photodegradation employing hexagonal prism-shaped niobium oxide as heterogeneous catalyst: effect of catalyst dosage, dye concentration, and radiation source. Mater Chem Phys 214:95–106. https://doi.org/10.1016/j.matchemphys.2018.04.063
Devi LG, Murthy BN (2008) Characterization of Mo doped TiO2 and its enhanced photo catalytic activity under visible light. Catal Lett 125:320–330. https://doi.org/10.1007/s10562-008-9568-4
Eda K (1991) Longitudinal-transverse splitting effects in IR absorption spectra of MoO3. J Solid State Chem 95:64–73. https://doi.org/10.1016/0022-4596(91)90376-S
Fabryanty R, Valencia C, Soetaredjo FE, Putro JN, Santoso SP, Kurniawan A, Ju YH, Ismadji S (2017) Removal of crystal violet dye by adsorption using bentonite – alginate composite. J Environ Chem Eng 5:5677–5687. https://doi.org/10.1016/j.jece.2017.10.057
Fan J, Qin H, Jiang S (2019) Mn-doped g-C3N4 composite to activate peroxymonosulfate for acetaminophen degradation: The role of superoxide anion and singlet oxygen. Chem Eng J 359:723–732. https://doi.org/10.1016/j.cej.2018.11.165
Fernández-López C, Mateo-Mateo C, Álvarez-Puebla RA, Pérez-Juste J, Pastoriza-Santos I, Liz-Marzán LM (2009) Highly controlled silica coating of PEG-capped metal nanoparticles and preparation of SERS-encoded particles. Langmuir 25:13894–13899. https://doi.org/10.1021/la9016454
Gao YP, Huang KJ, Zhang CX, Song SS, Wu X (2018) High-performance symmetric supercapacitor based on flower-like zinc molybdate. J Alloys Compd 731:1151–1158. https://doi.org/10.1016/j.jallcom.2017.10.161
Ghernaout D (2013) Advanced oxidation phenomena in electrocoagulation process: a myth or a reality? Desalin Water Treat 51:7536–7554. https://doi.org/10.1080/19443994.2013.792520
Guo K, Gao B, Wang W, Yue Q, Xu X (2019) Evaluation of molecular weight, chain architectures and charge densities of various lignin-based flocculants for dye wastewater treatment. Chemosphere 215:214–226. https://doi.org/10.1016/j.chemosphere.2018.10.048
Habib IY, Kumara NTRN, Lim CM, Mahadi AH (2018) Dynamic light scattering and zeta potential studies of ceria nanoparticles. Solid State Phenom 278 SSP:112–120. https://doi.org/10.4028/www.scientific.net/SSP.278.112
Han J, Qiu W, Gao W (2010) Potential dissolution and photo-dissolution of ZnO thin films. J Hazard Mater 178:115–122. https://doi.org/10.1016/j.jhazmat.2010.01.050
Hasan Khan Neon M, Islam MS (2019) MoO3 and Ag co-synthesized TiO2 as a novel heterogeneous photocatalyst with enhanced visible-light-driven photocatalytic activity for methyl orange dye degradation. Environ Nanotechnol Monit Manag 12:100244. https://doi.org/10.1016/j.enmm.2019.100244
He Y, Zhang L, Wang X, Wu Y, Lin H, Zhao L, Weng W, Wan H, Fan M (2014) Enhanced photodegradation activity of methyl orange over Z-scheme type MoO3 - g-C3N4 composite under visible light irradiation. RSC Adv 4:13610–13619. https://doi.org/10.1039/c4ra00693c
Hickman R, Walker E, Chowdhury S (2018) TiO2-PDMS composite sponge for adsorption and solar mediated photodegradation of dye pollutants. J Water Process Eng 24:74–82. https://doi.org/10.1016/j.jwpe.2018.05.015
Hu H, Deng C, Xu J, Zhang K, Sun M (2015) Metastable h-MoO3 and stable α-MoO3 microstructures: controllable synthesis, growth mechanism and their enhanced photocatalytic activity. J Exp Nanosci 10:1336–1346. https://doi.org/10.1080/17458080.2015.1012654
Huang L, Xu H, Zhang R, Cheng X, Xia J, Xu Y, Li H (2013) Synthesis and characterization of g-C3N4 /MoO3 photocatalyst with improved visible-light photoactivity. Appl Surf Sci 283:25–32. https://doi.org/10.1016/j.apsusc.2013.05.106
Huczko A (2000) Template-based synthesis of nanomaterials. Appl Phys A Mater Sci Process 70:365–376. https://doi.org/10.1007/s003390051050
Hussain S, Javed MS, Asim S, Shaheen A, Khan AJ, Abbas Y, Ullah N, Iqbal A, Wang M, Qiao G, Yun S (2019a) Novel gravel-like NiMoO4 nanoparticles on carbon cloth for outstanding supercapacitor applications. Ceram Int 46:6406–6412. https://doi.org/10.1016/j.ceramint.2019.11.118
Hussain S, Yang X, Aslam MK, Shaheen A, Javed MS, Aslam N, Aslam B, Liu G, Qiao G (2019b) Robust TiN Nanoparticles Polysulfide Anchor for Li – S Storage and Diffusion Pathways. Chem Eng J:123595. https://doi.org/10.1016/j.cej.2019.123595
Jabeen M, Iqbal MA, Kumar RV, Ahmed M, Javed MT (2014) Chemical synthesis of zinc oxide nanorods for enhanced hydrogen gas sensing. Chin Phys B 23. https://doi.org/10.1088/1674-1056/23/1/018504
Jose A, Sunaja Devi KR, Pinheiro D, Lakshmi Narayana S (2018) Electrochemical synthesis, photodegradation and antibacterial properties of PEG capped zinc oxide nanoparticles. J Photochem Photobiol B Biol 187:25–34. https://doi.org/10.1016/j.jphotobiol.2018.07.022
Karthik K, Devi KRS, Pinheiro D, Sugunan S (2019) Photocatalytic activity of bismuth silicate heterostructures synthesized via surfactant mediated sol-gel method. Mater Sci Semicond Process 102:104589. https://doi.org/10.1016/j.mssp.2019.104589
Kaur J, Singhal S (2014) Facile synthesis of ZnO and transition metal doped ZnO nanoparticles for the photocatalytic degradation of Methyl Orange. Ceram Int 40:7417–7424. https://doi.org/10.1016/j.ceramint.2013.12.088
Kislov N, Lahiri J, Verma H, Goswami DY, Stefanakos E, Batzill M (2009) Photocatalytic degradation of methyl orange over single crystalline ZnO: Orientation dependence of photoactivity and photostability of ZnO. Langmuir 25:3310–3315. https://doi.org/10.1021/la803845f
Kleiman-Shwarsctein A, Hu YS, Forman AJ, Stucky GD, McFarland EW (2008) Electrodeposition of α-Fe2O3 doped with Mo or Cr as photoanodes for photocatalytic water splitting. J Phys Chem C 112:15900–15907. https://doi.org/10.1021/jp803775j
Li W, Li D, Lin Y, Wang P, Chen W, Fu X, Shao Y (2012) Evidence for the active species involved in the photodegradation process of methyl Orange on TiO2. J Phys Chem C 116:3552–3560. https://doi.org/10.1021/jp209661d
Lin Y, Li D, Hu J, Xiao G, Wang J, Li W, Fu X (2012) Highly efficient photocatalytic degradation of organic pollutants by PANI-modified TiO2 composite. J Phys Chem C 116:5764–5772. https://doi.org/10.1021/jp211222w
Liu Y, Ohko Y, Zhang R, Yang Y, Zhang Z (2010) Degradation of malachite green on Pd/WO3 photocatalysts under simulated solar light. J Hazard Mater 184:386–391. https://doi.org/10.1016/j.jhazmat.2010.08.047
Lu X, Wang R, Yang F, Jiao W, Liu W, Hao L, He X (2016) Preparation of MoO3 QDs through combining intercalation and thermal exfoliation. J Mater Chem C 4:6720–6726. https://doi.org/10.1039/c6tc01656a
Ma Y, Ni M, Li S (2018) Optimization of malachite green removal from water by TiO2 nanoparticles under UV irradiation. Nanomaterials 8:1–11. https://doi.org/10.3390/nano8060428
Machida N, Eckert H (1998) FT-IR, FT-Raman and 95Mo MAS–NMR studies on the structure of ionically conducting glasses in the system AgI–Ag2O–MoO3. Solid State Ionics 107:255–268. https://doi.org/10.1016/S0167-2738(98)00009-5
Mamba G, Kiwi J, Pulgarin C, Sanjines R, Giannakis S, Rtimi S (2018) Evidence for the degradation of an emerging pollutant by a mechanism involving iso-energetic charge transfer under visible light. Appl Catal B Environ 233:175–183. https://doi.org/10.1016/j.apcatb.2018.03.109
Meenakumari M, Philip D (2015) Degradation of environment pollutant dyes using phytosynthesized metal nanocatalysts. Spectrochim Acta A Mol Biomol Spectrosc 135:632–638. https://doi.org/10.1016/j.saa.2014.07.037
Meng F, Ge F, Chen Y, Xu G, Huang F (2019) Local structural changes induced by ion bombardment in magnetron sputtered ZnO: Al films: Raman, XPS, and XAS study. Surf Coat Technol 365:2–9. https://doi.org/10.1016/j.surfcoat.2018.04.013
Muggli DS, McCue JT, Falconer JL (1998) Mechanism of the photocatalytic oxidation of ethanol on TiO2. J Catal 173:470–483. https://doi.org/10.1006/jcat.1997.1946
Nayak S, Parida KM (2019) Deciphering Z-scheme charge transfer dynamics in heterostructure NiFe-LDH/N-rGO/g-C3N4 nanocomposite for photocatalytic pollutant removal and water splitting reactions. Sci Rep 9:1–23. https://doi.org/10.1038/s41598-019-39009-4
Oudghiri-Hassani H, Rakass S, Abboudi M, Mohmoud A, al Wadaani F (2018) Preparation and characterization of α-zinc molybdate catalyst: Efficient sorbent for methylene blue and reduction of 3-nitrophenol. Molecules 23. https://doi.org/10.3390/molecules23061462
Passuello T, Pedroni M, Piccinelli F, Polizzi S, Marzola P, Tambalo S, Conti G, Benati D, Vetrone F, Bettinelli M, Speghini A (2012) PEG-capped, lanthanide doped GdF3 nanoparticles: luminescent and T2 contrast agents for optical and MRI multimodal imaging. Nanoscale 4:7682–7689. https://doi.org/10.1039/c2nr31796f
Payra S, Challagulla S, Bobde Y, Chakraborty C, Ghosh B, Roy S (2019) Probing the photo- and electro-catalytic degradation mechanism of methylene blue dye over ZIF-derived ZnO. J Hazard Mater 373:377–388. https://doi.org/10.1016/j.jhazmat.2019.03.053
Piranshahi ZA, Behbahani M, Zeraatpisheh F (2018) Synthesis, characterization and photocatalytic application of TiO2/magnetic graphene for efficient photodegradation of crystal violet. Appl Organomet Chem 32:1–11. https://doi.org/10.1002/aoc.3985
Prasad V, D’Souza C, Yadav D et al (2006) Spectroscopic characterization of zinc oxide nanorods synthesized by solid-state reaction. Spectrochim Acta A Mol Biomol Spectrosc 65:173–178. https://doi.org/10.1016/j.saa.2005.10.001
Rajeshwar K, Osugi ME, Chanmanee W, Chenthamarakshan CR (2008) Heterogeneous photocatalytic treatment of organic dyes in air and aqueous media. J Photochem Photobiol C: Photochem Rev 9:171–192. https://doi.org/10.1016/j.jphotochemrev.2008.09.001
Sadakane M, Sasaki K, Kunioku H, Ohtani B, Ueda W, Abe R (2008) Preparation of nano-structured crystalline tungsten(VI) oxide and enhanced photocatalytic activity for decomposition of organic compounds under visible light irradiation. Chem Commun 1:6552–6554. https://doi.org/10.1039/b815214d
Sahinkaya E, Tuncman S, Koc I, Guner AR, Ciftci S, Aygun A, Sengul S (2019) Performance of a pilot-scale reverse osmosis process for water recovery from biologically-treated textile wastewater. J Environ Manag 249:109382. https://doi.org/10.1016/j.jenvman.2019.109382
Sajid M, Khaled M, Baig N (2018) Removal of heavy metals and organic pollutants from water using dendritic polymers based adsorbents : A critical review. Sep Purif Technol 191:400–423. https://doi.org/10.1016/j.seppur.2017.09.011
Saleh R, Djaja NF (2014) Transition-metal-doped ZnO nanoparticles: synthesis, characterization and photocatalytic activity under UV light. Spectrochim Acta A Mol Biomol Spectrosc 130:581–590. https://doi.org/10.1016/j.saa.2014.03.089
Sayilkan F, Asiltürk M, Tatar P et al (2008) Photocatalytic performance of Sn-doped TiO2 nanostructured thin films for photocatalytic degradation of malachite green dye under UV and VIS-lights. Mater Res Bull 43:127–134. https://doi.org/10.1016/j.materresbull.2007.02.012
Sharma N, Kumar J, Thakur S, Sharma S, Shrivastava V (2013) Antibacterial study of silver doped zinc oxide nanoparticles against Staphylococcus aureus and Bacillus subtilis. Drug Invent Today 5:50–54. https://doi.org/10.1016/j.dit.2013.03.007
Shen B, Dong C, Ji J, Xing M, Zhang J (2019) Efficient Fe(III)/Fe(II) cycling triggered by MoO2 in Fenton reaction for the degradation of dye molecules and the reduction of Cr(VI). Chin Chem Lett 30:2205–2210. https://doi.org/10.1016/j.cclet.2019.09.052
Shifu C, Lei J, Wenming T, Xianliang F (2013) Fabrication, characterization and mechanism of a novel Z-scheme photocatalyst NaNbO3/WO3 with enhanced photocatalytic activity. Dalton Trans 42:10759–10768. https://doi.org/10.1039/c3dt50699a
Slokar YM, Le Marechal AM (1998) Methods of decoloration of textile wastewaters. Dyes Pigments 37:335–356
Sukmilin A, Boonchom B, Jarusutthirak C (2019) Catalytic ozonation using iron-doped water treatment sludge as a catalyst for treatment of phenol in synthetic wastewater. Environ Sci Nat Resour 17:87–95. https://doi.org/10.32526/ennrj.17.2.2019.15
Sushma C, Girish Kumar S (2017) Advancements in the zinc oxide nanomaterials for efficient photocatalysis. Chem Pap 71:2023–2042. https://doi.org/10.1007/s11696-017-0217-5
Syam Babu D, Anantha Singh TS, Nidheesh PV, Suresh Kumar M (2019) Industrial wastewater treatment by electrocoagulation process. Sep Sci Technol 00:1–33. https://doi.org/10.1080/01496395.2019.1671866
Taylor CM, Ramirez-Canon A, Wenk J, Mattia D (2019) Enhancing the photo-corrosion resistance of ZnO nanowire photocatalysts. J Hazard Mater 378:120799. https://doi.org/10.1016/j.jhazmat.2019.120799
Wang S, Bai LN, Sun HM, Jiang Q, Lian JS (2013) Structure and photocatalytic property of Mo-doped TiO2 nanoparticles. Powder Technol 244:9–15. https://doi.org/10.1016/j.powtec.2013.03.054
Wang S, Gao W, Li H, Xiao LP, Sun RC, Song G (2018) Selective fragmentation of biorefinery corncob lignin into p-hydroxycinnamic esters with a supported zinc molybdate catalyst. ChemSusChem 11:2114–2123. https://doi.org/10.1002/cssc.201800455
Wang L, Li Z, Chen J, Huang Y, Zhang H, Qiu H (2019) Enhanced photocatalytic degradation of methyl orange by porous graphene/ZnO nanocomposite. Environ Pollut 249:801–811. https://doi.org/10.1016/j.envpol.2019.03.071
Xie W, Li Y, Sun W, Huang J, Xie H, Zhao X (2010) Surface modification of ZnO with Ag improves its photocatalytic efficiency and photostability. J Photochem Photobiol A Chem 216:149–155. https://doi.org/10.1016/j.jphotochem.2010.06.032
Xie Z, Feng Y, Wang F, Chen D, Zhang Q, Zeng Y, Lv W, Liu G (2018) Construction of carbon dots modified MoO3/ g-C3N4 Z-scheme photocatalyst with enhanced visible-light photocatalytic activity for the degradation of tetracycline. Appl Catal B Environ 229:96–104. https://doi.org/10.1016/j.apcatb.2018.02.011
Xiong W, Hu X, Wu X, Zeng Y, Wang B, He G, Zhu ZH (2015) Flexible fiber-shaped supercapacitor utilizing hierarchical NiCo2O4@Polypyrrole core-shell nanowires on hemp-derived carbon. J Mater Chem A 3:17209–17216. https://doi.org/10.1039/C5TA04201A
Xu Y, Wang X, An C, Wang Y, Jiao L, Yuan H (2014) Facile synthesis route of porous MnCo2O4 and CoMn2O4 nanowires and their excellent electrochemical properties in supercapacitors. J Mater Chem A 2:16480–16488. https://doi.org/10.1039/C4TA03123G
Xu Z, Zhao Y, He J, Wang T, Yang J, Shen X, Cao L, Huang J (2019) MoO3/carbon dots composites for Li-ion battery anodes. ChemNanoMat. 5:921–925. https://doi.org/10.1002/cnma.201900140
Xu X, Wang S, Hu T, Yu X, Wang J, Jia C (2020) Fabrication of Mn/O co-doped g-C3N4: excellent charge separation and transfer for enhancing photocatalytic activity under visible light irradiation. Dyes Pigments 175:108107. https://doi.org/10.1016/j.dyepig.2019.108107
Yang S, Li W, Zhang H, Wen Y, Ni Y (2019) Treatment of paper mill wastewater using a composite inorganic coagulant prepared from steel mill waste pickling liquor. Sep Purif Technol 209:238–245. https://doi.org/10.1016/j.seppur.2018.07.049
Yu YY, Chang SS, Lee CL, Wang CRC (1997) Gold nanorods: electrochemical synthesis and optical properties. J Phys Chem B 101:6661–6664. https://doi.org/10.1021/jp971656q
Yu C, Yang K, Shu Q, Yu JC, Cao FF, Li X, Zhou XC (2012) Preparation, characterization and photocatalytic performance of Mo-doped ZnO photocatalysts. Sci China Chem 55:1802–1810. https://doi.org/10.1007/s11426-012-4721-8
Yu J, Kiwi J, Wang T et al (2019) Duality in the mechanism of hexagonal zno/cuxo nanowires inducing sulfamethazine degradation under solar or visible light. Catalysts 9. https://doi.org/10.3390/catal9110916
Zhang M, Guo S, Zheng L, Zhang G, Hao Z, Kang L, Liu ZH (2013) Electrochimica acta preparation of NiMn2O4 with large specific surface area from an epoxide-driven sol−gel process and its capacitance. Electrochim Acta 87:546–553. https://doi.org/10.1016/j.electacta.2012.09.085
Zhang P, Lo I, O’Connor D et al (2017) High efficiency removal of methylene blue using SDS surface-modified ZnFe2O4 nanoparticles. J Colloid Interface Sci 508:39–48. https://doi.org/10.1016/j.jcis.2017.08.025
Zhen Y, Wang J, Fu F, Fu W, Liang Y (2019) The novel Z-scheme ternary-component Ag/AgI/α-MoO3 catalyst with excellent visible-light photocatalytic oxidative desulfurization performance for model fuel. Nanomaterials 9:1054. https://doi.org/10.3390/nano9071054
Zhou H, Xia X, Lv P, Zhang J, Hou X, Zhao M, Ao K, Wang D, Lu K, Qiao H, Zimniewska M, Wei Q (2018) C@TiO2/MoO3 composite nanofibers with 1T-phase MoS2 nanograin dopant and stabilized interfaces as anodes for Li- and Na-ion batteries. ChemSusChem 11:4060–4070. https://doi.org/10.1002/cssc.201801784
Zhou Y, Lu J, Liu Q, Chen H, Liu Y, Zhou Y (2020) A novel hollow-sphere cyclodextrin nanoreactor for the enhanced removal of bisphenol A under visible irradiation. J Hazard Mater 384:121267. https://doi.org/10.1016/j.jhazmat.2019.121267
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Authors are grateful to CHRIST (Deemed to be University), Bangalore, and Indian Institute of Science (IISc), Bangalore, for all the characterization facilities.
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Conceptualization: Sunaja Devi K R and Ajay Jose; Methodology: Sunaja Devi K R and Ajay Jose; Formal analysis and investigation: Ajay Jose and Karthik K; Writing — original draft preparation: Ajay Jose and Dephan Pinheiro; Writing — review and editing: Ajay Jose, Sunaja Devi K R, and Dephan Pinheiro; Resources: Ajay Jose, Sunaja Devi K R, Dephan Pinheiro, and Karthik K; Supervision: Sunaja Devi K R.
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Jose, A., Pai, S.D.K.R., Pinheiro, D. et al. Visible light photodegradation of organic dyes using electrochemically synthesized MoO3/ZnO. Environ Sci Pollut Res 28, 52202–52215 (2021). https://doi.org/10.1007/s11356-021-14311-9
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DOI: https://doi.org/10.1007/s11356-021-14311-9