Optical and structural stability of Co3O4 nanoparticles for photocatalytic applications

被引：33

作者：

Letsholathebe, D. ^{[1
,2
,3
]}

Thema, F. T. ^{[2
,3
,4
]}

Mphale, K. ^{[1
]}

Mohamed, H. E. A. ^{[2
,3
]}

Holonga, K. J. ^{[1
]}

Ketlhwaafetse, R. ^{[1
]}

Chimidza, S. ^{[1
]}

机构：

[1] Univ Botswana, Dept Phys, P Bag 0022, Gaborone, Botswana

[2] Univ South Africa UNISA, Coll Grad Studies, Nanosci Nanotechnol Labs, POB 392, Pretoria, South Africa

[3] iThemba Labs Natl Res Fdn NRF, Nanosci African Network NANOAFNET, Mat Res Grp MRG, Old Faure Rd,POB 722, ZA-7129 Somerset West, Western Cape Pr, South Africa

[4] Botswana Univ Agr & Nat Resources, Dept Anim Sci, P Bag 0027, Gaborone, Botswana

来源：

MATERIALS TODAY-PROCEEDINGS | 2021年 / 36卷

基金：

新加坡国家研究基金会;

关键词：

Co3O4; nanoparticles; UV-Visible Absorbance Spectroscopy; XRD analysis; Optical Studies; Photocatalytic activity;

D O I：

10.1016/j.matpr.2020.05.205

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Cobalt Oxide (Co3O4) nanoparticles were successfully prepared by hydrothermal method for wastewater treatment photocatalytic applications. The obtained nanoparticles were characterized by XRD, UV, FTIR and PL analyses to confirm the properties of the sample. The XRD diffraction pattern confirmed the purity of the sample as a Cobalt tetra oxide single phase. The optical properties via UV-Vis spectroscopy shows a bandgap in the energy range of 2.1 eV - 2.4 eV. The photocatalytic study confirmed the catalytic activities of the formulated sample. The prepared nanoparticles were then applied in breaking down pollutants in water. Moreover, the degradation reactions of wastewater were found to be about 250 mg/l after 160 min. The nanoparticles were able to reduce 4-nitrophenol and 4-nitroaniline using sodium borohydride as a reducing agent while exhibiting an effective reduction reaction. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页码：499 / 503

页数：5

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