Advertisement

Fabrication of Ag2O/KNbO3 heterojunction with high visible-light photocatalytic activity

  • Xiaoxiao Lu
  • XiangDong Ma
  • Qiang LiEmail author
  • Kai Dai
  • Jinfeng Zhang
  • Min Zhang
  • Chaopeng Cui
  • Guangping Zhu
  • Changhao LiangEmail author
Research Paper
  • 24 Downloads

Abstract

In the present work, a series of Ag2O/KNbO3 composite photocatalysts are prepared for the first time through an in situ growth method. The as-obtained samples are well characterized by X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy, UV-vis absorption spectroscopy, and X-ray photoelectron spectroscopy. The photocatalytic properties of the samples are assessed by decomposition of rhodamine B (RhB) under visible-light excitation. The results demonstrate Ag2O/KNbO3 illustrated superior photocatalytic activity. The rate constant of RhB degradation over the optimal sample (Ag2O/KNbO3-6:1) exceeded 2.78 and 65 times higher than that of pure Ag2O and KNbO3, respectively. The improved photocatalytic activity could be due to the heterostructure of the catalyst, which enhance the visible light absorption capacity and the separation efficiency of photogenerated carriers. The quenching experiments of varied scavengers illustrated that •O2 and h+ were the primary active species in the decoloration of RhB.

Keywords

Ag2KNbO3 Heterostructure Photocatalyst 

Notes

Funding information

We gratefully acknowledge the financial support of the Natural Science Foundation of Anhui Province (1908085QF293 and 1908085QA36), the Natural Science Foundation of China (51572103 and 51973078), and the Foundation of Educational Commission of Anhui Province (KJ2018A0394, KJ2018A0393, and KJ2016SD53).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

References

  1. Bajorowicz B, Nadolna J, Lisowski W, Klimczuk T, Zaleska-Medynska A (2017) The effects of bifunctional linker and reflux time on the surface properties and photocatalytic activity of CdTe quantum dots decorated KTaO3 composite photocatalysts. Appl Catal B-Environ 203:452–464CrossRefGoogle Scholar
  2. Cervantes-Macías AI, Huerta-Aguilar CA, Pandiyan T (2017) ZnO–Fe3O4–Au hybrid composites for thioanisole oxidation under visible light: experimental and theoretical studies. J Clust Sci 28:1897–1922CrossRefGoogle Scholar
  3. Chen S, Hu Y, Ji L, Jiang X, Fu X (2014) Preparation and characterization of direct Z-scheme photocatalyst Bi2O3/NaNbO3 and its reaction mechanism. Appl Surf Sci 292:357–366CrossRefGoogle Scholar
  4. Chen Z, Chen P, Xing P, Hu X, Lin H, Wu Y, Zhao L, He Y (2018a) Novel carbon modified KTa0.75Nb0.25O3 nanocubes with excellent efficiency in photocatalytic H2 evolution. Fuel 233:486–496CrossRefGoogle Scholar
  5. Chen Z, Xing P, Chen P, Chen Q, Wang Y, Yu J, He Y (2018b) Synthesis of carbon doped KTaO3 and its enhanced performance in photocatalytic H2 generation. Catal Commun 109:6–9CrossRefGoogle Scholar
  6. de Mendonca VR, Mourao HA, Malagutti AR, Ribeiro C (2014) The role of the relative dye/photocatalyst concentration in TiO2 assisted photodegradation process. Photochem Photobiol 90:66–72CrossRefGoogle Scholar
  7. Fujishima A, Honda K (1972) Electrochemical photolysis of water at a semiconductor electrode. Nature 238:37–38CrossRefGoogle Scholar
  8. Ganeshkumar R, Sopiha KV, Wu P, Cheah CW, Zhao R (2016) Ferroelectric KNbO3 nanofibers: synthesis, characterization and their application as a humidity nanosensor. Nanotechnology 27:395607CrossRefGoogle Scholar
  9. Guo R, Qi X, Zhang X, Zhang H, Cheng X (2019) Synthesis of Ag2CO3/α-Fe2O3 heterojunction and it high visible light driven photocatalytic activity for elimination of organic pollutants. Sep Purif Technol 211:504–513CrossRefGoogle Scholar
  10. Shi H, Zhang C, Zhou C, Chen G (2015) Conversion of CO2 into renewable fuel over Pt-g-C3N4/KNbO3 composite photocatalyst. RSC Adv 5:93615–93622CrossRefGoogle Scholar
  11. Huang L, He H, Zhang B, Tan S, Qi J (2018) Improved photocatalytic hydrogen production performance over NaTaO3/reduced graphene oxide composite photocatalyst. J Nanosci Nanotechnol 18:4982–4986CrossRefGoogle Scholar
  12. Huerta-Aguilar CA, Palos-Barba V, Thangarasu P, Koodali RT (2018) Visible light driven photo-degradation of Congo red by TiO2ZnO/Ag: DFT approach on synergetic effect on band gap energy. Chemosphere 213:481–497CrossRefGoogle Scholar
  13. Huerta-Aguilar CA, Ramírez-Alejandre AA, Pandiyan T, Arenas-Alatorre JA, Reyes-Dominguez IA, Corea M (2019) Crystal phase induced band gap energy enhancing the photo-catalytic properties of Zn–Fe2O4/Au NPs: experimental and theoretical studies. Catal Sci Technol 9:3066–3080CrossRefGoogle Scholar
  14. Huerta-Aguilar CA, Pandiyan T, Arenas-Alatorre JA, Singh N (2015) Oxidation of phenols by TiO2Fe3O4M (M=Ag or Au) hybrid composites under visible light. Sep Purif Technol 149:265–278CrossRefGoogle Scholar
  15. Iqbal M, Ali A, Nahyoon NA, Majeed A, Pothu R, Phulpoto S, Thebo KH (2019) Photocatalytic degradation of organic pollutant with nanosized cadmium sulfide. Mater Sci Energy Technol 2:41–45Google Scholar
  16. Iqbal M, Thebo AA, Shah AH, Iqbal A, Thebo KH, Phulpoto S, Mohsin MA (2017) Influence of Mn-doping on the photocatalytic and solar cell efficiency of CuO nanowires. Inorg Chem Commun 76:71–76CrossRefGoogle Scholar
  17. Joung MR, Xu H, Seo IT, Kim DH, Hur J, Nahm S, Kang CY, Yoon SJ, Park HM (2014) Piezoelectric nanogenerators synthesized using KNbO3 nanowires with various crystal structures. J Mater Chem A 2:18547–18553CrossRefGoogle Scholar
  18. Kim S, Kim M-S, Lee C, Park S, Cho WI, Kim W (2017) Structure–property relationship of metastable monoclinic potassium niobate (KNbO3) nanowires during phase transitions. J Alloys Compd 709:415–421CrossRefGoogle Scholar
  19. Liang N, Wang M, Jin L, Huang S, Chen W, Xu M, He Q, Zai J, Fang N, Qian X (2014) Highly efficient Ag2O/Bi2O2CO3 p-n heterojunction photocatalysts with improved visible-light responsive activity. ACS Appl Mater Interfaces 6:11698–11705CrossRefGoogle Scholar
  20. Liu X, Liu J, Chu H, Li J, Yu W, Zhu G, Niu L, Sun Z, Pan L, Sun CQ (2015) Enhanced photocatalytic activity of Bi2O3–Ag2O hybrid photocatalysts. Appl Surf Sci 347:269–274CrossRefGoogle Scholar
  21. Luo XL, He GL, Fang YP, Xu YH (2018) Nickel sulfide/graphitic carbon nitride/strontium titanate (NiS/g-C3N4/SrTiO3) composites with significantly enhanced photocatalytic hydrogen production activity. J Colloid Interface Sci 518:184–191CrossRefGoogle Scholar
  22. Lv J, Kako T, Zou Z, Ye J (2009) Band structure design and photocatalytic activity of In2O3/N–InNbO4 composite. Appl Phys Lett 95:032107CrossRefGoogle Scholar
  23. Lyu L-M, Huang MH (2011) Investigation of relative stability of different facets of Ag2O nanocrystals through face-selective etching. J Phys Chem C 115:17768–17773CrossRefGoogle Scholar
  24. Ma S, Xue J, Zhou Y, Zhang Z (2014) Photochemical synthesis of ZnO/Ag2O heterostructures with enhanced ultraviolet and visible photocatalytic activity. J Mater Chem A 2:7272–7280CrossRefGoogle Scholar
  25. Nahyoon NA, Liu L, Rabe K, Thebo KH, Yuan L, Sun J, Yang F (2018) Significant photocatalytic degradation and electricity generation in the photocatalytic fuel cell (PFC) using novel anodic nanocomposite of Fe, graphene oxide, and titanium phosphate. Electrochim Acta 271:41–48CrossRefGoogle Scholar
  26. Paul KK, Ghosh R, Giri PK (2016) Mechanism of strong visible light photocatalysis by Ag2O-nanoparticle-decorated monoclinic TiO2(B) porous nanorods. Nanotechnology 27:315703CrossRefGoogle Scholar
  27. Qu Z, Wang J, Tang J, Shu X, Liu X, Zhang Z, Wang J (2018) Carbon quantum dots/KNbO3 hybrid composites with enhanced visible-light driven photocatalytic activity toward dye waste-water degradation and hydrogen production. Mol Catal 445:1–11CrossRefGoogle Scholar
  28. Raja S, Ramesh Babu R, Ramamurthi K, Moorthy Babu S (2018) Room temperature ferromagnetic behavior, linear and nonlinear optical properties of KNbO3 microrods. Ceram Int 44:3297–3306CrossRefGoogle Scholar
  29. Sarkar D, Ghosh CK, Mukherjee S, Chattopadhyay KK (2012) Three dimensional Ag2O/TiO2 Type-II (p–n) nanoheterojunctions for superior photocatalytic activity. ACS Appl Mater Interfaces 5:331–337CrossRefGoogle Scholar
  30. Shi L, Liang L, Ma J, Wang F, Sun J (2014) Enhanced photocatalytic activity over the Ag2O–g-C3N4 composite under visible light. Catal Sci Technol 4:758–765CrossRefGoogle Scholar
  31. Sun M, Yan Q, Shao Y, Wang C, Yan T, Ji P, Du B (2017) Facile fabrication of BiOI decorated NaNbO3 cubes: a p–n junction photocatalyst with improved visible-light activity. Appl Surf Sci 416:288–295CrossRefGoogle Scholar
  32. Sun S, Ge Y, Zhao Y, Yuan X, Zhao Y, Zhou H (2016) Up-conversion luminescence behaviors in Er3+ doped single crystal KNbO3 nanosheets. RSC Adv 6:113038–113044CrossRefGoogle Scholar
  33. Tang L, Feng C, Deng Y, Zeng G, Wang J, Liu Y, Feng H, Wang J (2018) Enhanced photocatalytic activity of ternary Ag/g-C3N4/NaTaO3 photocatalysts under wide spectrum light radiation: the high potential band protection mechanism. Appl Catal B-Environ 230:102–114CrossRefGoogle Scholar
  34. Tomara T, Frontistis Z, Petala A, Mantzavinos D (2019) Photocatalytic performance of Ag2O towards sulfamethoxazole degradation in environmental samples. J Environ Chem Eng 7:103177CrossRefGoogle Scholar
  35. Wang H, Yuan X, Wang H, Chen X, Wu Z, Jiang L, Xiong W, Zeng G (2016) Facile synthesis of Sb2S3/ultrathin g-C3N4 sheets heterostructures embedded with g-C3N4 quantum dots with enhanced NIR-light photocatalytic performance. Appl Catal B-Environ 193:36–46CrossRefGoogle Scholar
  36. Wang R, Zhu Y, Qiu Y, Leung C-F, He J, Liu G, Lau T-C (2013) Synthesis of nitrogen-doped KNbO3 nanocubes with high photocatalytic activity for water splitting and degradation of organic pollutants under visible light. Chem Eng J 226:123–130CrossRefGoogle Scholar
  37. Wang S, Xu X, Luo H, Cao C, Song X, Zhao J, Zhang J, Tang C (2018) Novel SrTiO3/NaTaO3 and visible-light-driven SrTiO3/NaTaO3:N nano-heterojunctions with high interface-lattice matching for efficient photocatalytic removal of organic dye. RSC Adv 8:19279–19288CrossRefGoogle Scholar
  38. Wang W, Wang J, Wang Z, Wei X, Liu L, Ren Q, Gao W, Liang Y, Shi H (2014) p-n junction CuO/BiVO4 heterogeneous nanostructures: synthesis and highly efficient visible-light photocatalytic performance. Dalton Trans 43:6735–6743CrossRefGoogle Scholar
  39. Wei N, Cui H, Song Q, Zhang L, Song X, Wang K, Zhang Y, Li J, Wen J, Tian J (2016) Ag2O nanoparticle/TiO2 nanobelt heterostructures with remarkable photo-response and photocatalytic properties under UV, visible and near-infrared irradiation. Appl Catal B-Environ 198:83–90CrossRefGoogle Scholar
  40. Wei Z, Benlin D, Fengxia Z, Xinyue T, Jiming X, Lili Z, Shiyin L, Leung DYC, Sun C (2018) A novel 3D plasmonic p-n heterojunction photocatalyst: Ag nanoparticles on flower-like p-Ag2S/n-BiVO4 and its excellent photocatalytic reduction and oxidation activities. Appl Catal B-Environ 229:171–180CrossRefGoogle Scholar
  41. Wu M, Yan J-M, Zhao M, Jiang Q (2012) Facile synthesis of an Ag2O–ZnO nanohybrid and its high photocatalytic activity. ChemPlusChem 77:931–935CrossRefGoogle Scholar
  42. Xia Y, He Z, Hu K, Tang B, Su J, Liu Y, Li X (2018) Fabrication of n-SrTiO3/p-Cu2O heterojunction composites with enhanced photocatalytic performance. J Alloys Compd 753:356–363CrossRefGoogle Scholar
  43. Xu J, Feng B, Wang Y, Qi Y, Niu J, Chen M (2018) BiOCl decorated NaNbO3 nanocubes: a novel p-n heterojunction photocatalyst with improved activity for ofloxacin degradation. Front Chem 6:393CrossRefGoogle Scholar
  44. Xu M, Han L, Dong S (2013) Facile fabrication of highly efficient g-C3N4/Ag2O heterostructured photocatalysts with enhanced visible-light photocatalytic activity. ACS Appl Mater Interfaces 5:12533–12540CrossRefGoogle Scholar
  45. Yan M, Hua Y, Zhu F, Gu W, Jiang J, Shen H, Shi W (2017) Fabrication of nitrogen doped graphene quantum dots-BiOI/MnNb2O6 p-n junction photocatalysts with enhanced visible light efficiency in photocatalytic degradation of antibiotics. Appl Catal B-Environ 202:518–527CrossRefGoogle Scholar
  46. Yang S, Xu D, Chen B, Luo B, Yan X, Xiao L, Shi W (2016) Synthesis and visible-light-driven photocatalytic activity of p–n heterojunction Ag2O/NaTaO3 nanocubes. Appl Surf Sci 383:214–221CrossRefGoogle Scholar
  47. Yao L, Wei D, Ni Y, Yan D, Hu C (2016) Surface localization of CdZnS quantum dots onto 2D g-C3N4 ultrathin microribbons: Highly efficient visible light-induced H2-generation. Nano Energy 26:248–256CrossRefGoogle Scholar
  48. Yu J, Chen Z, Wang Y, Ma Y, Feng Z, Lin H, Wu Y, Zhao L, He Y (2018) Synthesis of KNbO3/g-C3N4 composite and its new application in photocatalytic H2 generation under visible light irradiation. J Mater Sci 53:7453–7465CrossRefGoogle Scholar
  49. Yue X, Yi S, Wang R, Zhang Z, Qiu S (2018) Well-controlled SrTiO3@Mo2C core-shell nanofiber photocatalyst: boosted photo-generated charge carriers transportation and enhanced catalytic performance for water reduction. Nano Energy 47:463–473CrossRefGoogle Scholar
  50. Zhang B, Zhang D, Xi Z, Wang P, Pu X, Shao X, Yao S (2017a) Synthesis of Ag2O/NaNbO3 p-n junction photocatalysts with improved visible light photocatalytic activities. Sep Purif Technol 178:130–137CrossRefGoogle Scholar
  51. Zhang J, Liu H, Ma Z (2016) Flower-like Ag2O/Bi2MoO6 p-n heterojunction with enhanced photocatalytic activity under visible light irradiation. J Mol Catal A Chem 424:37–44CrossRefGoogle Scholar
  52. Zhang J, Lu Y, Ge L, Han C, Li Y, Gao Y, Li S, Xu H (2017b) Novel AuPd bimetallic alloy decorated 2D BiVO4 nanosheets with enhanced photocatalytic performance under visible light irradiation. Appl Catal B-Environ 204:385–393CrossRefGoogle Scholar
  53. Zhang T, Zhao K, Yu J, Jin J, Qi Y, Li H, Hou X, Liu G (2013) Photocatalytic water splitting for hydrogen generation on cubic, orthorhombic, and tetragonal KNbO3 microcubes. Nanoscale 5:8375–8383CrossRefGoogle Scholar
  54. Zhao W, Liu Y, Wei Z, Yang S, He H, Sun C (2016) Fabrication of a novel p–n heterojunction photocatalyst n-BiVO4@p-MoS2 with core–shell structure and its excellent visible-light photocatalytic reduction and oxidation activities. Appl Catal B-Environ 185:242–252CrossRefGoogle Scholar

Copyright information

© Springer Nature B.V. 2019

Authors and Affiliations

  • Xiaoxiao Lu
    • 1
  • XiangDong Ma
    • 1
  • Qiang Li
    • 1
    Email author
  • Kai Dai
    • 1
  • Jinfeng Zhang
    • 1
  • Min Zhang
    • 1
  • Chaopeng Cui
    • 1
  • Guangping Zhu
    • 1
  • Changhao Liang
    • 2
    Email author
  1. 1.College of Physics and Electronic InformationHuaibei Normal UniversityHuaibeiPeople’s Republic of China
  2. 2.Key Laboratory of Materials Physics and Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Hefei Institutes of Physical ScienceChinese Academy of SciencesHefeiPeople’s Republic of China

Personalised recommendations