Boosted hydrogen evolution activity from Sr doped ZnO/CNTs nanocomposite as visible light driven photocatalyst

被引：24

作者：

Ahmad, Irshad ^{[1
]}

Shukrullah, Shazia ^{[1
]}

Naz, Muhammad Yasin ^{[1
]}

Rasheed, Muhammad Athar ^{[2
]}

Ahmad, Mukhtar ^{[3
]}

Ahmed, Ejaz ^{[3
]}

Akhtar, Muhammad Shoaib ^{[4
]}

Khalid, N. R. ^{[5
]}

Hussain, Abid ^{[6
]}

Khalid, Sadia ^{[3
]}

机构：

[1] Univ Agr Faisalabad, Dept Phys, Faisalabad 38040, Pakistan

[2] Govt Coll Univ, Dept Appl Chem, Faisalabad, Pakistan

[3] Bahauddin Zakariya Univ, Dept Phys, Multan 60800, Pakistan

[4] Lanzhou Univ Technol, Sch Comp & Commun, Lanzhou 10731, Peoples R China

[5] Univ Gujrat, Dept Phys, Gujrat 50700, Pakistan

[6] Khwaja Fareed Univ Engn & Informat Technol, Dept Phys, Rahim Yar Khan 64200, Pakistan

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2021年 / 46卷 / 53期

关键词：

ZnO; CNTs; Sol gel; Water-glycerol; Hydrogen evolution; ZNO NANOPARTICLES; PERFORMANCE; ENHANCEMENT; DEGRADATION; COMPOSITES; GENERATION; NANOTUBES;

D O I：

10.1016/j.ijhydene.2021.05.164

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：

CNTs were decorated onto Sr doped ZnO nanoparticles to construct an efficient photo catalyst via a facile sol-gel method. The as-fabricated Sr doped ZnO/CNTs with recyclability exhibits Sr and CNTs content dependent hydrogen evolution activit under visible light illumination. The Sr doped ZnO/CNTs photocatalyst shows the highest hydrogen evolution rate of 2732.2 mmolh(-1)g(-1), which is 33.7 and 2.83 times higher than pure ZnO and Sr doped ZnO photocatalysts, respectively. The improved hydrogen evolution activity of Sr doped ZnO/CNTs is primarily assigned to high surface area, Sr doping and construction of heterojunction, which can extend the light absorption, decrease the optical band gap and improve the charge separation. Moreover, the underlying photocatalytic mechanism is proposed on the basis of Mott-Schottky study and explains the interfacial charge transfer process from ZnO to CNTs and Sr. This work open new strategies to synthesize CNTs based nanocomposite for hydrogen evolution. (C) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：26711 / 26724

页数：14

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