Intimately Contacted Ni2P on CdS Nanorods for Highly E ffi cient Photocatalytic H2 Evolution: New Phosphidation Route and the Interfacial Separation Mechanism of Charge Carriers

被引:110
作者
Wang, Ziqun [1 ]
Qi, Zhulin [1 ]
Fan, Xiujun [3 ]
Leung, Dennis Y. C. [2 ]
Long, Jinlin [4 ]
Zhang, Zizhong [4 ]
Miao, Tifang [1 ]
Meng, Sugang [1 ]
Chen, Shifu [1 ]
Fu, Xianliang [1 ]
机构
[1] Huaibei Normal Univ, Coll Chem & Mat Sci, Huaibei 235000, Anhui, Peoples R China
[2] Univ Hong Kong, Dept Mech Engn, Pokfulam Rd, Hong Kong, Peoples R China
[3] Shanxi Univ, Inst Crystalline Mat, Taiyuan 030006, Shanxi, Peoples R China
[4] Fuzhou Univ, Coll Chem, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350116, Peoples R China
基金
中国国家自然科学基金;
关键词
Ni2P; Phosphidation; CdS nanorods; Photocatalytic Hydrogen Production; Solvothermal; METAL-FREE COCATALYST; IN-SITU SYNTHESIS; HYDROGEN EVOLUTION; EFFICIENT COCATALYST; RATIONAL SYNTHESIS; G-C3N4; NANOSHEETS; WATER; NANOPARTICLES; MOS2; SURFACE;
D O I
10.1016/j.apcatb.2020.119443
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A new phosphidation route based on a solvothermal method is demonstrated for the deposition of Ni2P on CdS nanorods photocatalyst with NaBH4 as a crucial reactant and (H2PO2)as dissolvable P precursor, which leads to a highly crystallized and well contacted Ni2P on CdS in an Ohmic-contact model. On the optimized sample (2% Ni2P/CdS), as high as 1.18 mmol.h(-1) H-2 evolution rate can be obtained over 50 mg sample, corresponding to an apparent quantum efficiency of 56% (under lambda = 435 nm irradiation). The activity is significantly higher than the samples prepared by conventional phosphidation processes and the classical Pt (2%) modified CdS. The remarkable HER performance can be ascribed to the loading of intimately contacted Ni2P, which can promote the separation of photoinduced charge carriers and simultaneously decreases the overpotential for H-2 evolution. Furthermore, a reservoir role for photoinduced ewas observed on the deposited Ni2P beyond as a cocatalyst.
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页数:11
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共 78 条
  • [71] Photocatalytic organic transformations: Simultaneous oxidation of aromatic alcohols and reduction of nitroarenes on CdLa2S4 in one reaction system
    Zhang, Sujuan
    Huang, Weixin
    Fu, Xianliang
    Zheng, Xiuzhen
    Meng, Sugang
    Ye, Xiangju
    Chen, Shifu
    [J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2018, 233 : 1 - 10
  • [72] Highly efficient and noble metal-free NiS/CdS photocatalysts for H2 evolution from lactic acid sacrificial solution under visible light
    Zhang, Wei
    Wang, Yabo
    Wang, Zhan
    Zhong, Ziyi
    Xu, Rong
    [J]. CHEMICAL COMMUNICATIONS, 2010, 46 (40) : 7631 - 7633
  • [73] Band Bending in Semiconductors: Chemical and Physical Consequences at Surfaces and Interfaces
    Zhang, Zhen
    Yates, John T., Jr.
    [J]. CHEMICAL REVIEWS, 2012, 112 (10) : 5520 - 5551
  • [74] The enhancement of CdS photocatalytic activity for water splitting via anti-photocorrosion by coating Ni2P shell and removing nascent formed oxygen with artificial gill
    Zhen, Wenlong
    Ning, Xiaofeng
    Yang, Baojun
    Wu, Yuqi
    Li, Zhen
    Lu, Gongxuan
    [J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2018, 221 : 243 - 257
  • [75] Supercritical solvothermal preparation of a ZnxCd1-xS visible photocatalyst with enhanced activity
    Zhong, Jiahui
    Zhang, Ya
    Hu, Changqun
    Hou, Rujing
    Yin, Haibo
    Li, Hexing
    Huo, Yuning
    [J]. JOURNAL OF MATERIALS CHEMISTRY A, 2014, 2 (46) : 19641 - 19647
  • [76] Ultrahigh-Performance Pseudocapacitor Electrodes Based on Transition Metal Phosphide Nanosheets Array via Phosphorization: A General and Effective Approach
    Zhou, Kai
    Zhou, Weijia
    Yang, Linjing
    Lu, Jia
    Cheng, Shuang
    Mai, Wenjie
    Tang, Zhenghua
    Li, Ligui
    Chen, Shaowei
    [J]. ADVANCED FUNCTIONAL MATERIALS, 2015, 25 (48) : 7530 - 7538
  • [77] Metal-free graphene quantum dots photosensitizer coupled with nickel phosphide cocatalyst for enhanced photocatalytic hydrogen production in water under visible light
    Zhu, Liang
    Yue, Qiudi
    Jiang, Daochuan
    Chen, Huanlin
    Irfan, Rana Muhammad
    Du, Pingwu
    [J]. CHINESE JOURNAL OF CATALYSIS, 2018, 39 (11) : 1753 - 1761
  • [78] Enhancement of photocatalytic H2 evolution on CdS by loading MOS2 as cocatalyst under visible light irradiation
    Zong, Xu
    Yan, Hongjian
    Wu, Guopeng
    Ma, Guijun
    Wen, Fuyu
    Wang, Lu
    Li, Can
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (23) : 7176 - +