Nanoflower shaped NiO/CeO2 p-n junction material for the degradation of pollutant under visible light

被引：4

作者：

Gnanasekaran, Lalitha ^{[1
]}

Jalil, A. A. ^{[2
,3
]}

Kumar, Senthil ^{[4
]}

Rajendran, Saravanan ^{[1
]}

Gracia, F. ^{[5
]}

Soto-Moscoso, Matias ^{[6
]}

Habila, Mohamed A. ^{[7
]}

Saravanakumar, Karunamoorthy ^{[8
]}

机构：

[1] Univ Tarapaca, Fac Ingn, Dept Ingn Mecan, Avda Gen Velasquez 1775, Arica, Chile

[2] Univ Teknol Malaysia, Fac Engn, Sch Chem & Energy Engn, Utm Johor Bahru 81310, Johor, Malaysia

[3] Inst Future Energy, Ctr Hydrogen Energy, Utm Johor Bahru 81310, Johor, Malaysia

[4] Sri Sivasubramaniya Nadar Coll Engn, Dept Chem Engn, Chennai 603110, Tamil Nadu, India

[5] Univ Chile, Dept Chem Engn Biotechnol & Mat, Beauchef 851,6th Floor, Santiago, Chile

[6] Univ Bio Bio, Fac Ciencias, Dept Fis, Ave Collao 1202,Casilla 15-C, Concepcion, Chile

[7] King Saud Univ, Coll Sci, Dept Chem, POB 2455, Riyadh 11451, Saudi Arabia

[8] Kyungpook Natl Univ, Dept Environm Engn, 80 Daehak Ro, Daegu 41566, South Korea

来源：

MATERIALS LETTERS | 2022年 / 317卷

关键词：

Photocatalyst; Semiconductor; p-n Junctions; Methyl orange; Oxidation;

D O I：

10.1016/j.matlet.2022.132122

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The potential need of p-n junctions create an optimistic way of supporting photogenerated electron-hole pair separation and improving interfacial charge-transfer rates. In this context, a p-type semiconductor NiO can couple with n-type CeO2, thus approving visible light activity by forming p-n junctions. The visible light activity of two large band gap semiconductors still lacks some significant reasons. To solve this, for the first time, this paper reports 3D flower shaped p n heterojunction NiO/CeO2 synthesized via thermal decomposition method and studied their properties through various instrumental techniques. Besides, the photocatalytic mechanism of p n junction and the degrading efficiency of organic pollutant methyl orange (MO) for the synthesized catalysts was discussed. This achieves the outstanding activity and showed better stability which are useful for future applications.

引用

页数：4

共 13 条

[1]

Ahmed D.N., 2020, SCI REP-UK, V2042, P2666

[2] Preparation of ZnO Photocatalyst for the Efficient and Rapid Photocatalytic Degradation of Azo Dyes [J].