Carbon quantum dots as a visible light sensitizer to significantly increase the solar water splitting performance of bismuth vanadate photoanodes

被引：327
作者：
Ye, Kai-Hang [1 ,3 ]
Wang, Zilong [2 ,3 ]
Gu, Jiuwang [2 ]
Xiao, Shuang [3 ]
Yuan, Yufei [2 ]
Zhu, Yi [1 ]
Zhang, Yuanming [1 ]
Mai, Wenjie [1 ,2 ,4 ]
Yang, Shihe [3 ]
机构：
[1] Jinan Univ, Dept Chem, Guangzhou 510632, Guangdong, Peoples R China
[2] Jinan Univ, Guangzhou Key Lab Vacuum Coating Technol & New En, Siyuan Lab, Dept Phys, Guangzhou 510632, Guangdong, Peoples R China
[3] Hong Kong Univ Sci & Technol, Dept Chem, Kowloon, Hong Kong, Peoples R China
[4] Jinan Univ, Guangdong Prov Key Lab Opt Fiber Sensing & Commun, Guangzhou 510632, Guangdong, Peoples R China
来源：
ENERGY & ENVIRONMENTAL SCIENCE | 2017年 / 10卷 / 03期
基金：
中国国家自然科学基金;
关键词：
PHOTOELECTROCHEMICAL PERFORMANCE; PHOTOCATALYTIC PERFORMANCE; CO-PI; ENHANCEMENT; CELLS; BIVO4; NANOSTRUCTURES; NANOWIRES; CATALYST; ARRAYS;
D O I：
10.1039/c6ee03442j
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Here, we demonstrate that carbon quantum dots (CQDs), as a low cost, chemically stable, and environmentally friendly photosensitizer, can dramatically broaden the light absorption range to the entire visible range. Consequently, the NiOOH/FeOOH/CQD/BiVO4 (NFCB) photoanode has achieved a remarkable photocurrent density of 5.99 mA cm(-2) at 1.23 V vs. RHE under AM 1.5G in KH2PO4 aqueous solution without a hole scavenger (pH = 7) and a record high applied bias photon-to-current efficiency of 2.29% at 0.6 V vs. RHE for BiVO4-based photoanodes. This novel NFCB photoanode could operate stably for 10 h with a Faraday efficiency of similar to 95%, demonstrating the great potential of using CQDs for solar water splitting.
引用
收藏
页码：772 / 779
页数：8
相关论文
共 35 条
  • [1] Efficient solar water splitting by enhanced charge separation in a bismuth vanadate-silicon tandem photoelectrode
    Abdi, Fatwa F.
    Han, Lihao
    Smets, Arno H. M.
    Zeman, Miro
    Dam, Bernard
    van de Krol, Roel
    [J]. NATURE COMMUNICATIONS, 2013, 4
  • [2] Solar Water Splitting by TiO2/CdS/Co-Pi Nanowire Array Photoanode Enhanced with Co-Pi as Hole Transfer Relay and CdS as Light Absorber
    Ai, Guanjie
    Li, Hongxing
    Liu, Shaopei
    Mo, Rong
    Zhong, Jianxin
    [J]. ADVANCED FUNCTIONAL MATERIALS, 2015, 25 (35) : 5706 - 5713
  • [3] [Anonymous], 2008, G17303 ASTM INT, DOI [10.1520/G0173-03R08, DOI 10.1520/G0173-03R08]
  • [4] Carbon Quantum Dot Surface-Engineered VO2 Interwoven Nanowires: A Flexible Cathode Material for Lithium and Sodium Ion Batteries
    Balogun, Muhammad-Sadeeq
    Luo, Yang
    Lyu, Feiyi
    Wang, Fuxin
    Yang, Hao
    Li, Haibo
    Liang, Chaolun
    Huang, Miao
    Huang, Yongchao
    Tong, Yexiang
    [J]. ACS APPLIED MATERIALS & INTERFACES, 2016, 8 (15) : 9733 - 9744
  • [5] Amorphous FeOOH Oxygen Evolution Reaction Catalyst for Photoelectrochemical Water Splitting
    Chemelewski, William D.
    Lee, Heung-Chan
    Lin, Jung-Fu
    Bard, Allen J.
    Mullins, C. Buddie
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2014, 136 (07) : 2843 - 2850
  • [6] Photoelectrochemical Behavior of Hierarchically Structured Si/WO3 Core-Shell Tandem Photoanodes
    Coridan, Robert H.
    Arpin, Kevin A.
    Brunschwig, Bruce S.
    Braun, Paul V.
    Lewis, Nathan S.
    [J]. NANO LETTERS, 2014, 14 (05) : 2310 - 2317
  • [7] Probing the photoelectrochemical properties of hematite (α-Fe2O3) electrodes using hydrogen peroxide as a hole scavenger
    Dotan, Hen
    Sivula, Kevin
    Graetzel, Michael
    Rothschild, Avner
    Warren, Scott C.
    [J]. ENERGY & ENVIRONMENTAL SCIENCE, 2011, 4 (03) : 958 - 964
  • [8] Photoelectrochemical cells
    Grätzel, M
    [J]. NATURE, 2001, 414 (6861) : 338 - 344
  • [9] Graphene Quantum Dots as a Green Sensitizer to Functionalize ZnO Nanowire Arrays on F-Doped SnO2 Glass for Enhanced Photoelectrochemical Water Splitting
    Guo, Chun Xian
    Dong, Yongqiang
    Yang, Hong Bin
    Li, Chang Ming
    [J]. ADVANCED ENERGY MATERIALS, 2013, 3 (08) : 997 - 1003
  • [10] Hierarchical TiO2-CuInS2 core-shell nanoarrays for photoelectrochemical water splitting
    Guo, Keying
    Liu, Zhifeng
    Han, Jianhua
    Liu, Zhichao
    Li, Yajun
    Wang, Bo
    Cui, Ting
    Zhou, Cailou
    [J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2014, 16 (30) : 16204 - 16213
1234