Platinum/zinc oxide nanoparticles: Enhanced photocatalysts degrade malachite green dye under visible light conditions

被引：105

作者：

Mohamed, Reda M. ^{[1
,3
]}

McKinney, David ^{[2
]}

Kadi, Mohammad W. ^{[1
]}

Mkhalid, Ibraheem. A. ^{[1
]}

Sigmund, Wolfgang ^{[4
]}

机构：

[1] King Abdulaziz Univ, Fac Sci, Dept Chem, POB 80203, Jeddah 21589, Saudi Arabia

[2] MM Virtuoso, Gainesville, FL 32606 USA

[3] CMRDI, Cent Met R&D Inst, Adv Mat Dept, POB 87 Helwan, Cairo 11421, Egypt

[4] Univ Florida, Herbert Wertheim Coll Engn, Dept Mat Sci & Engn, 225 Rhines Hall,POB 116400, Gainesville, FL 32611 USA

来源：

CERAMICS INTERNATIONAL | 2016年 / 42卷 / 08期

关键词：

ZnO; Photocatalyst; Nanoparticle; Malachite green; ZINC-OXIDE; NANOSTRUCTURES; ZNO; UV;

D O I：

10.1016/j.ceramint.2016.02.147

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Zinc oxide nanoparticles (ZnO) were prepared via a sol-gel method, and a photo-assisted deposition method was used to prepare platinum on zinc oxide nanoparticles (Pt/ZnO). Several techniques were used to characterize these enhanced photocatalysts: XRD, TEM, UV-vis spectra, PL spectra, XPS, and BET surface area analysis. As-prepared samples' photocatalytic performances were studied via degradation of malachite green dye under various visible-light-only irradiation scenarios. Results demonstrated the following: platinum (Pt) was well dispersed on and in ZnO's surfaces and pores; as such, Pt/ZnO had less surface area than pure ZnO due to pore blockage; however, advantages gained from enhanced electron hole separation and decreased band gap width more than made up for this negative effect; moreover, Pt/ZnO prepared with 0.3 wt% Pt exhibited the lowest band gap and the highest photocatalytic activity of the various samples with a solids loading of 0.8 g/l; finally, such samples were recyclable, i.e., photo catalytic performance remained stable even after five uses. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：9375 / 9381

页数：7

共 25 条

[1]

Arnold D., 2009, MALACHITE GREEN, P1

[2] Supported platinum-zinc oxide core-shell nanoparticle catalysts for methanol steam reforming [J].

Arroyo-Ramirez, Lisandra ;

Chen, Chen ;

Cargnello, Matteo ;

Murray, Christopher B. ;

Fornasiero, Paolo ;

Gorte, Raymond J. .

JOURNAL OF MATERIALS CHEMISTRY A, 2014, 2 (45) :19509-19514

[3]

Bills T. D, 1977, Investigations Fish Control, VNo. 75, P1

[4] Mineralization of malachite green dye over visible light responsive bismuth doped TiO2-ZrO2 ferromagnetic nanocomposites [J].

Charanpahari, Archana ;

Ghugal, Sachin G. ;

Umare, Suresh S. ;

Sasikala, Rajamma .

NEW JOURNAL OF CHEMISTRY, 2015, 39 (05) :3629-3638

[5]

Culp SJ, 1996, J AM COLL TOXICOL, V15, P219, DOI 10.3109/10915819609008715

[6] Preparation of the new polyaniline/ZnO nanocomposite and its photocatalytic activity for degradation of methylene blue and malachite green dyes under UV and natural sun lights irradiations [J].

Eskizeybek, Volkan ;

Sari, Fahriye ;

Gulce, Handan ;

Gulce, Ahmet ;

Avci, Ahmet .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2012, 119 :197-206

[7]

Foster F.J., 1936, Prog. Fish Cult., V18, P7, DOI [10.1577/1548-8640(1936)318[7:TUOMGA]2.0.CO

[8]

2, DOI 10.1577/1548-8640(1936)318[7:TUOMGA]2.0.CO

[9]

[10]

Gosselin R. E., 1984, CLIN TOXICOLOGY COMM, P11

← 1 2 3 →