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Heterostructured Ternary In 2 O 3 −Ag−TiO 2 Nanotube Arrays for Simulated Sunlight‐Driven Photoelectrocatalytic Hydrogen Generation
Author(s) -
Zhang Zeyang,
Fu Jiangjian,
Cai Jingsheng,
Lin Sheng,
Chen Yinhuan,
Sun Lan,
Lai Yuekun,
Hu Yanling,
Shen Fei,
Lin Changjian
Publication year - 2021
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.202001489
Subject(s) - materials science , ternary operation , visible spectrum , anodizing , anatase , photocurrent , nanoparticle , water splitting , nanotube , chemical engineering , hydrogen production , absorption (acoustics) , photocatalysis , nanotechnology , hydrogen , optoelectronics , composite material , catalysis , chemistry , organic chemistry , aluminium , carbon nanotube , computer science , engineering , programming language
The ternary In 2 O 3 −Ag−TiO 2 composites based on anatase TiO 2 nanotube arrays (TNTs) were synthesized to extend the light responsive region, enhance the visible light absorption, reduce the recombination rate of charge carriers and promote the efficiency of water splitting for H 2 evolution. Highly ordered TNTs were first prepared by electrochemical anodization of Ti sheets. Ag nanoparticles with a diameter of about 20 nm were then uniformly deposited inside and on the orifice of the TNTs. In 2 O 3 nanoparticles synthesized through a solvent‐thermal method were subsequently modified on the Ag−TNTs using an ultrasound‐assisted electrophoresis method. In 2 O 3 −Ag−TNTs composites exhibited enhanced visible light absorption and photocurrent when compared to binary Ag−TNTs and In 2 O 3 −TNTs. As a result, the optimal hydrogen generation rate using the In 2 O 3 −Ag−TNTs composite under visible light irradiation was 1.92 μmol cm −2 h −1 , 5 times higher than that of the pure TNTs.