Construction of g-C3N4/BCN two-dimensional heterojunction photoanode for enhanced photoelectrochemical water splitting

被引：32

作者：

Lei, Nan ^{[1
]}

Li, Junqi ^{[1
]}

Song, Qianqian ^{[1
]}

Liang, Zheng ^{[1
]}

机构：

[1] Shaanxi Univ Sci & Technol, Sch Mat Sci & Engn, Xian 710021, Shaanxi, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2019年 / 44卷 / 21期

基金：

中国国家自然科学基金;

关键词：

BCN nanosheets; Two-dimension heterojunction; Charge transfer; Photoelectrochemical performance; CARBON NITRIDE; EFFICIENT PHOTOCATALYST; NANOSHEETS; ELECTRODES; OXIDATION; FIBERS; FILMS; BN;

D O I：

10.1016/j.ijhydene.2019.02.160

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：

Two-dimensional heterojunction g-C3N4/BCN was constructed via thermal polymerization process. The formed two-dimensional heterostructure could enhance the interfacial contact area between BCN and porous g-C3N4 as well as shorten the photogenerated charge carriers transfer time and distance. The two-dimensional g-C3N4/BCN heterojunction photoanode shows enhanced photoelectrochemical (PEC) performance for water splitting under visible-light irradiation, which primarily originates from the improved charge transfer and separation, and prolonged lifetime of electrons. Under the visible light irradiation, the g-C3N4/BCN heterojunction sample yields a photocurrent density of similar to 0.62 mA cm(-2) at 1.23 V vs. RHE, which is about eight times as many as that of CN (0.08 mA cm(-2)) electrode at the same conditions. In addition, the possible electron transfer model and mechanism of PEC water splitting for H-2 evolution have been discussed. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：10498 / 10507

页数：10

共 51 条

[1] Ultrasonic irradiation preparation of graphitic-C3N4/polyaniline nanocomposites as counter electrodes for dye-sensitized solar cells [J].

Afshari, Mohaddeseh ;

Dinari, Mohammad ;

Momeni, Mohamad Mohsen .

ULTRASONICS SONOCHEMISTRY, 2018, 42 :631-639

[2]

[Anonymous], 2011, ANGEW CHEM INT EDIT, DOI DOI 10.1002/ANGE.201100170

[3] In-situ reduction synthesis of nano-sized Cu2O particles modifying g-C3N4 for enhanced photocatalytic hydrogen production [J].

Chen, Jie ;

Shen, Shaohua ;

Guo, Penghui ;

Wang, Meng ;

Wu, Po ;

Wang, Xixi ;

Guo, Liejin .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2014, 152 :335-341

[4] In situ fabrication of novel Z-scheme Bi2WO6 quantum dots/g-C3N4 ultrathin nanosheets heterostructures with improved photocatalytic activity [J].

Chen, Wei ;

Liu, Tian-Yu ;

Huang, Ting ;

Liu, Xiao-Heng ;

Zhu, Jun-Wu ;

Duan, Guo-Rong ;

Yang, Xu-Jie .

APPLIED SURFACE SCIENCE, 2015, 355 :379-387

[5] Photoresponsive Supramolecular Organometallic Nanosheets Induced by PtII•••PtII and C-H•••π Interactions [J].

Chen, Yong ;

Li, Kai ;

Lu, Wei ;

Chui, Stephen Sin-Yin ;

Ma, Chun-Wah ;

Che, Chi-Ming .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2009, 48 (52) :9909-9913

[6] Alternative energy technologies [J].

Dresselhaus, MS ;

Thomas, IL .

NATURE, 2001, 414 (6861) :332-337

[7] Ball milled h-BN: An efficient holes transfer promoter to enhance the photocatalytic performance of TiO2 [J].

Fu, Xianliang ;

Hu, Yingfei ;

Yang, Yunguang ;

Liu, We ;

Chen, Shifu .

JOURNAL OF HAZARDOUS MATERIALS, 2013, 244 :102-110

[8] Chemical synthesis of mesoporous carbon nitrides using hard templates and their use as a metal-free catalyst for friedel-crafts reaction of benzene [J].

Goettmann, Frederic ;

Fischer, Anna ;

Antonietti, Markus ;

Thomas, Arne .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2006, 45 (27) :4467-4471

[9] Carbon-doped BN nanosheets for metal-free photoredox catalysis [J].

Huang, Caijin ;

Chen, Cheng ;

Zhang, Mingwen ;

Lin, Lihua ;

Ye, Xinxin ;

Lin, Sen ;

Antonietti, Markus ;

Wang, Xinchen .

NATURE COMMUNICATIONS, 2015, 6

[10] Syntheses and structures of new graphite-like materials of composition BCN(H) and BC3N(H) [J].

Kawaguchi, M ;

Kawashima, T ;

Nakajima, T .

CHEMISTRY OF MATERIALS, 1996, 8 (06) :1197-1201

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