Enhanced photocatalytic hydrogen generation and photostability of ZnO nanoparticles obtained via green synthesis

被引：57
|
作者：
Archana, B. [1 ,4 ]
Manjunath, K. [2 ]
Nagaraju, G. [3 ]
Sekhar, K. B. Chandra [4 ]
Kottam, Nagaraju [1 ]
机构：
[1] MS Ramaiah Inst Technol, Dept Chem, Bengaluru 560054, India
[2] Jain Univ, Ctr Nano & Mat Sci, Jain Global Campus,Kanakapura Rd, Bengaluru 562112, Karnataka, India
[3] Siddaganga Inst Technol, Dept Chem, Tumakuru 572102, India
[4] JNTUA, R&D Cell, Dept Chem, Anantapuramu 515001, India
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2017年 / 42卷 / 08期
关键词：
Zinc oxide; Green synthesis; Nanoparticles; H-2; generation; Photostability; VISIBLE-LIGHT-DRIVEN; HYBRID NANOSTRUCTURES; NANOWIRE ARRAYS; SOLID-SOLUTION; WATER; FABRICATION; NANORODS; HETEROSTRUCTURES; PHOTOCORROSION; NANOCRYSTALS;
D O I：
10.1016/j.ijhydene.2016.11.099
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：
ZnO nanoparticles are prepared by green synthesis using Moringaoleifera natural extract. XRD and Raman analysis show crystalline ZnO with wurtzite structure. SEM and TEM images show the average size of the nanoparticles to be 100-200 nm. Photocatalytic generation of hydrogen by these nanoparticles has been investigated under UV-Visible light irradiation. Na2S and Na2SO3 sacrificial agents dispersed with the photocatalyst are employed as hole scavengers. ZnO nanoparticles with smaller size shows better H-2 evolution rates up to 360 mu mol hg(-1). It is noteworthy that ZnO nanoparticles prepared via novel green synthesis exhibits oxygen vacancies and registers enhanced photocatalytic activity as well as good photostability. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：5125 / 5131
页数：7
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