Citation: Lun Pan, Jingwen Zhang, Xu Jia, Yu-Hang Ma, Xiangwen Zhang, Li Wang, Ji-Jun Zou. Highly efficient Z-scheme WO_3-x quantum dots/TiO₂ for photocatalytic hydrogen generation[J]. Chinese Journal of Catalysis, ;2017, 38(2): 253-259. doi: 10.1016/S1872-2067(16)62576-7 shu

Highly efficient Z-scheme WO_3-x quantum dots/TiO₂ for photocatalytic hydrogen generation

Lun Pan ^a,b, ,
Jingwen Zhang ^a,b ,
Xu Jia ^a,b ,
Yu-Hang Ma ^a ,
Xiangwen Zhang ^a,b ,
Li Wang ^a,b ,
Ji-Jun Zou ^a,b

a Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;
b Collaborative Innovative Center of Chemical Science and Engineering(Tianjin), Tianjin 300072, China

Received Date: 28 August 2016
Revised Date: 15 October 2016

Fund Project: This work was supported by the National Natural Science Foundation of China (21506156, 21676193) and the Tianjin Municipal Natural Science Foundation (15JCZDJC37300, 16JCQNJC05200).

Z-scheme semiconductors are a promising class of photocatalysts for hydrogen generation. In this work, Z-scheme semiconductors composed of WO_3-x quantum dots supported on TiO₂ (WO_3-x QDs/TiO₂) were fabricated by solvothermal and hydrogen-reduction methods. Characterization by transmission electron microscopy and X-ray diffraction indicated that the amount and size of the WO_3-x QDs could be tuned by modulating the addition of the W precursor. Evidence from X-ray photoelectron spectroscopy and photoluminescence spectroscopy suggested that the hydrogen reduction of the composite induced the formation of oxygen vacancy (W⁵⁺/VO) defects in WO₃. These defects led to ohmic contact between WO_3-x and TiO₂, which altered the charge-transfer pathway from type II heterojunction to Z-scheme, and maintained the highly reductive and oxidative ability of TiO₂ and WO_3-x, respectively. Therefore, the Z-scheme sample showed 1.3-fold higher photoactivity than pure TiO₂ in hydrogen generation. These results suggest that the formation of W⁵⁺/VO defects at the interface is highly beneficial for the fabrication of Z-scheme photocatalysts.
- WO_3-x,
- Titanium oxide,
- Hydrogen generation,
- Quantum dots,
- W⁵⁺/oxygen vacancy defect
1. [1]
2. [2]
3. [3]
4. [4]
5. [5]
6. [6]
7. [7]
8. [8]
9. [9]
10. [10]
11. [11]
12. [12]
13. [13]
14. [14]
15. [15]
16. [16]
17. [17]
18. [18]
19. [19]
20. [20]
21. [21]
22. [22]
23. [23]
24. [24]
25. [25]
26. [26]
27. [27]
28. [28]
29. [29]
30. [30]
31. [31]
32. [32]
33. [33]
34. [34]
35. [35]
1. [1]
  Zeyu XU , Anlei DANG , Bihua DENG , Xiaoxin ZUO , Yu LU , Ping YANG , Wenzhu YIN . Evaluation of the efficacy of graphene oxide quantum dots as an ovalbumin delivery platform and adjuvant for immune enhancement. Chinese Journal of Inorganic Chemistry, 2024, 40(6): 1065-1078. doi: 10.11862/CJIC.20240099
2. [2]
  Jingzhao Cheng , Shiyu Gao , Bei Cheng , Kai Yang , Wang Wang , Shaowen Cao . 4-氨基-1H-咪唑-5-甲腈修饰供体-受体型氮化碳光催化剂的构建及其高效光催化产氢研究. Acta Physico-Chimica Sinica, 2024, 40(11): 2406026-. doi: 10.3866/PKU.WHXB202406026
3. [3]
  Miaomiao He , Zhiqing Ge , Qiang Zhou , Jiaqing He , Hong Gong , Lingling Li , Pingping Zhu , Wei Shao . Exploring the Fascinating Realm of Quantum Dots. University Chemistry, 2024, 39(6): 231-237. doi: 10.3866/PKU.DXHX202310040
4. [4]
  Yu SU , Xinlian FAN , Yao YIN , Lin WANG . From synthesis to application: Development and prospects of InP quantum dots. Chinese Journal of Inorganic Chemistry, 2024, 40(11): 2105-2123. doi: 10.11862/CJIC.20240126
5. [5]
  Chenye An , Abiduweili Sikandaier , Xue Guo , Yukun Zhu , Hua Tang , Dongjiang Yang . 红磷纳米颗粒嵌入花状CeO₂分级S型异质结高效光催化产氢. Acta Physico-Chimica Sinica, 2024, 40(11): 2405019-. doi: 10.3866/PKU.WHXB202405019
6. [6]
  Shengjuan Huo , Xiaoyan Zhang , Xiangheng Li , Xiangning Li , Tianfang Chen , Yuting Shen . Unveiling the Marvels of Titanium: Popularizing Multifunctional Colored Titanium Product Films. University Chemistry, 2024, 39(5): 184-192. doi: 10.3866/PKU.DXHX202310127
7. [7]
  Ruiqing LIU , Wenxiu LIU , Kun XIE , Yiran LIU , Hui CHENG , Xiaoyu WANG , Chenxu TIAN , Xiujing LIN , Xiaomiao FENG . Three-dimensional porous titanium nitride as a highly efficient sulfur host. Chinese Journal of Inorganic Chemistry, 2024, 40(5): 867-876. doi: 10.11862/CJIC.20230441
8. [8]
  Bing LIU , Huang ZHANG , Hongliang HAN , Changwen HU , Yinglei ZHANG . Visible light degradation of methylene blue from water by triangle Au@TiO₂ mesoporous catalyst. Chinese Journal of Inorganic Chemistry, 2024, 40(5): 941-952. doi: 10.11862/CJIC.20230398
9. [9]
  Peipei Sun , Jinyuan Zhang , Yanhua Song , Zhao Mo , Zhigang Chen , Hui Xu . 引入内建电场增强光载流子分离以促进H₂的生产. Acta Physico-Chimica Sinica, 2024, 40(11): 2311001-. doi: 10.3866/PKU.WHXB202311001
10. [10]
  Bo YANG , Gongxuan LÜ , Jiantai MA . Nickel phosphide modified phosphorus doped gallium oxide for visible light photocatalytic water splitting to hydrogen. Chinese Journal of Inorganic Chemistry, 2024, 40(4): 736-750. doi: 10.11862/CJIC.20230346
11. [11]
  Xiaoning TANG , Shu XIA , Jie LEI , Xingfu YANG , Qiuyang LUO , Junnan LIU , An XUE . Fluorine-doped MnO₂ with oxygen vacancy for stabilizing Zn-ion batteries. Chinese Journal of Inorganic Chemistry, 2024, 40(9): 1671-1678. doi: 10.11862/CJIC.20240149
12. [12]
  Zhiquan Zhang , Baker Rhimi , Zheyang Liu , Min Zhou , Guowei Deng , Wei Wei , Liang Mao , Huaming Li , Zhifeng Jiang . Insights into the Development of Copper-based Photocatalysts for CO₂ Conversion. Acta Physico-Chimica Sinica, 2024, 40(12): 2406029-. doi: 10.3866/PKU.WHXB202406029
13. [13]
  Jianjun Liu , Xue Yang , Chi Zhang , Xueyu Zhao , Zhiwei Zhang , Yongmei Chen , Qinghong Xu , Shao Jin . Preparation and Fluorescence Characterization of CdTe Semiconductor Quantum Dots. University Chemistry, 2024, 39(7): 307-315. doi: 10.3866/PKU.DXHX202311031
14. [14]
  Caixia Lin , Zhaojiang Shi , Yi Yu , Jianfeng Yan , Keyin Ye , Yaofeng Yuan . Ideological and Political Design for the Electrochemical Synthesis of Benzoxathiazine Dioxide Experiment. University Chemistry, 2024, 39(2): 61-66. doi: 10.3866/PKU.DXHX202309005
15. [15]
  Bing WEI , Jianfan ZHANG , Zhe CHEN . Research progress in fine tuning of bimetallic nanocatalysts for electrocatalytic carbon dioxide reduction. Chinese Journal of Inorganic Chemistry, 2025, 41(3): 425-439. doi: 10.11862/CJIC.20240201
16. [16]
  Li'na ZHONG , Jingling CHEN , Qinghua ZHAO . Synthesis of multi-responsive carbon quantum dots from green carbon sources for detection of iron ions and L-ascorbic acid. Chinese Journal of Inorganic Chemistry, 2025, 41(4): 709-718. doi: 10.11862/CJIC.20240280
17. [17]
  Jie ZHAO , Huili ZHANG , Xiaoqing LU , Zhaojie WANG . Theoretical calculations of CO₂ capture and separation by functional groups modified 2D covalent organic framework. Chinese Journal of Inorganic Chemistry, 2025, 41(2): 275-283. doi: 10.11862/CJIC.20240213
18. [18]
  Jianyin He , Liuyun Chen , Xinling Xie , Zuzeng Qin , Hongbing Ji , Tongming Su . ZnCoP/CdLa₂S₄肖特基异质结的构建促进光催化产氢. Acta Physico-Chimica Sinica, 2024, 40(11): 2404030-. doi: 10.3866/PKU.WHXB202404030
19. [19]
  Linjie ZHU , Xufeng LIU . Electrocatalytic hydrogen evolution performance of tetra-iron complexes with bridging diphosphine ligands. Chinese Journal of Inorganic Chemistry, 2025, 41(2): 321-328. doi: 10.11862/CJIC.20240207
20. [20]
  Wei HE , Jing XI , Tianpei HE , Na CHEN , Quan YUAN . Application of solar-driven inorganic semiconductor-microbe hybrids in carbon dioxide fixation and biomanufacturing. Chinese Journal of Inorganic Chemistry, 2025, 41(1): 35-44. doi: 10.11862/CJIC.20240364

Get Citation

PDF

XML

Metrics

PDF Downloads(1)
Abstract views(866)
HTML views(140)

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Highly efficient Z-scheme WO3-x quantum dots/TiO2 for photocatalytic hydrogen generation

Metrics

通讯作者: 陈斌, bchen63@163.com

Highly efficient Z-scheme WO_3-x quantum dots/TiO₂ for photocatalytic hydrogen generation