Interface Engineering of a 2D-C3N4/NiFe-LDH Heterostructure for Highly Efficient Photocatalytic Hydrogen Evolution

被引：78

作者：

Yan, Jia ^{[1
,2
]}

Zhang, Xiandi ^{[1
,2
]}

Zheng, Weiran ^{[1
,2
]}

Lee, Lawrence Yoon Suk ^{[1
,2
,3
]}

机构：

[1] Hong Kong Polytech Univ, Dept Appl Biol & Chem Technol, Kowloon, Hong Kong, Peoples R China

[2] Hong Kong Polytech Univ, State Key Lab Chem Biol & Drug Discovery, Kowloon, Hong Kong, Peoples R China

[3] Hong Kong Polytech Univ, Res Inst Smart Energy, Kowloon, Hong Kong, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2021年 / 13卷 / 21期

关键词：

interface engineering; layered double hydroxide; carbon nitride; photocatalysis; hydrogen evolution reaction; CARBON NITRIDE SEMICONDUCTORS; CHARGE-TRANSFER; Z-SCHEME; WATER; NANOSHEETS; NANOCOMPOSITE; ARRAYS; CATALYSTS; G-C3N4;

D O I：

10.1021/acsami.1c03240

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Photocatalytic water splitting offers an economic and sustainable pathway for producing hydrogen as a zero-emission fuel, but it still suffers from low efficiencies limited by visible-light absorption capacity and charge separation kinetics. Herein, we report an interface-engineered 2D-C3N4/NiFe layered double hydroxide (CN/ LDH) heterostructure that shows highly enhanced photocatalytic hydrogen evolution reaction (HER) rate with excellent long-term stability. The morphology and band gap structure of NiFe-LDH are precisely regulated by employing NH4F as a structure-directing agent, which enables a fine interfacial tuning via coupling with 2D-C3N4. The formation of a type II interface in CN/LDH enlarges the active surface area and promotes the charge separation efficiency, leading to an HER rate of 3087 mu mol g(-1) h(-1), which is 14 times higher than that of 2D-C3N4. This study highlights a rational interface engineering strategy for the formation of a heterostructure with a proper hole transport co-catalyst for designing effective water-splitting photocatalysts.

引用

页码：24723 / 24733

页数：11

共 56 条

[1] Resurrection of boron nitride in p-n type-II boron nitride/B-doped-g-C3N4 nanocomposite during solid-state Z-scheme charge transfer path for the degradation of tetracycline hydrochloride [J].