Delta manganese dioxide nanosheets decorated magnesium wire for the degradation of methyl orange

Yan Zhang; Tian Xu Zheng; Yao Bo Hu; Xiao Luo Guo; Hui Hua Peng; Yu Xin Zhang; Li Feng; Huai Li Zheng

doi:10.1016/j.jcis.2016.11.080

Delta manganese dioxide nanosheets decorated magnesium wire for the degradation of methyl orange

J Colloid Interface Sci. 2017 Mar 15:490:226-232. doi: 10.1016/j.jcis.2016.11.080. Epub 2016 Nov 24.

Authors

Yan Zhang¹, Tian Xu Zheng¹, Yao Bo Hu², Xiao Luo Guo¹, Hui Hua Peng³, Yu Xin Zhang⁴, Li Feng⁵, Huai Li Zheng⁶

Affiliations

¹ College of Materials Science and Engineering, Chongqing University, Chongqing 400044, PR China.
² College of Materials Science and Engineering, Chongqing University, Chongqing 400044, PR China. Electronic address: yaobohu@cqu.edu.cn.
³ College of Resources and Environmental Science, State Key Laboratory of Coal MineDisaster Dynamics and Control, Chongqing University, Chongqing 400044, PR China.
⁴ College of Materials Science and Engineering, Chongqing University, Chongqing 400044, PR China; College of Resources and Environmental Science, State Key Laboratory of Coal MineDisaster Dynamics and Control, Chongqing University, Chongqing 400044, PR China; National Key Laboratory of Fundamental Science of Micro/Nano-Devices and System Technology, Chongqing University, Chongqing 400044, PR China. Electronic address: zhangyuxin@cqu.edu.cn.
⁵ College of Materials Science and Engineering, Chongqing University, Chongqing 400044, PR China; Chongqing Academy of Environmental Science, No. 252 Qishan road, Ranjiaba, Yubei District, Chongqing 401147, PR China.
⁶ College of Urban Construction and Environmental Engineering, Chongqing University, 400045 Chongqing, PR China.

PMID: 27912121
DOI: 10.1016/j.jcis.2016.11.080

Abstract

MnO₂-decorated magnesium wire composite (MnO₂-M) was fabricated via a simple hydrothermal reaction and accompanied by the calcination process (MnO₂/Mn₃O₄-M). To clarify the optimized reaction condition of δ-MnO₂ in the system, the effect of different pH, temperature and pollutant concentration of methyl orange (MO) for degradation process were investigated. Experimental results showed that MnO₂-M achieves a high removal rate of 76% (2h, at 25°C) in the presence of H₂O₂ at pH 2.5, which is higher than that of MnO₂/Mn₃O₄-M (54%). Moreover, reaction temperature and MO dye concentration have little effect on the degradation performance of MnO₂-M. This implies the stability of the as-prepared samples and good potential in the application of wastewater treatment.

Keywords: Adsorption; Degradation; Magnesium; Methyl orange; MnO(2).