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

被引：63

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

页码：5125 / 5131

页数：7

共 55 条

[21] Perception of climate change
Hansen, James
Sato, Makiko
Ruedy, Reto
[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2012, 109 (37) : E2415 - E2423
[22] Development of alternative photocatalysts to TiO2: Challenges and opportunities
Hernandez-Alonso, Maria D.
Fresno, Fernando
Suarez, Silvia
Coronado, Juan M.
[J]. ENERGY & ENVIRONMENTAL SCIENCE, 2009, 2 (12) : 1231 - 1257
[23] Hou YD, 2011, NAT MATER, V10, P434, DOI [10.1038/nmat3008, 10.1038/NMAT3008]
[24] Design, Fabrication, and Modification of Nanostructured Semiconductor Materials for Environmental and Energy Applications
Hu, Xianluo
Li, Guisheng
Yu, Jimmy C.
[J]. LANGMUIR, 2010, 26 (05) : 3031 - 3039
[25] Carrier recombination dynamics through defect states of ZnO nanocrystals: From nanoparticles to nanorods
Layek, Arunasish
Manna, Biswajit
Chowdhury, Arindam
[J]. CHEMICAL PHYSICS LETTERS, 2012, 539 : 133 - 138
[26] ZnO/CuInS2 core/shell heterojunction nanoarray for photoelectrochemical water splitting
Li, Yabin
Liu, Zhifeng
Wang, Yun
Liu, Zhichao
Han, Jianhua
Ya, Jing
[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2012, 37 (20) : 15029 - 15037
[27] Remarkable improvement in visible-light induced hydrogen generation by ZnO/Pt/Cd1-yZnyS heterostructures through substitution of N and F in ZnO
Lingampalli, S. R.
Rao, C. N. R.
[J]. JOURNAL OF MATERIALS CHEMISTRY A, 2014, 2 (21) : 7702 - 7705
[28] Highly efficient photocatalytic hydrogen generation by solution-processed ZnO/Pt/CdS, ZnO/Pt/Cd1-xZnxS and ZnO/Pt/CdS1-xSex hybrid nanostructures
Lingampalli, S. R.
Gautam, Ujjal K.
Rao, C. N. R.
[J]. ENERGY & ENVIRONMENTAL SCIENCE, 2013, 6 (12) : 3589 - 3594
[29] A simple microwave-assisted decomposing route for synthesis of ZnO nanorods in the presence of PEG400
Liu, Jin-song
Cao, Jie-ming
Li, Zi-quan
Ji, Guang-bin
Zheng, Ming-bo
[J]. MATERIALS LETTERS, 2007, 61 (22) : 4409 - 4411
[30] Improved visible-light photocatalytic activity of porous carbon self-doped ZnO nanosheet-assembled flowers
Liu, Shengwei
Li, Chuan
Yu, Jiaguo
Xiang, Quanjun
[J]. CRYSTENGCOMM, 2011, 13 (07): : 2533 - 2541

← 1 2 3 4 5 6 →