Facile synthesis of MoO₂ nanoparticles as high performance supercapacitor electrodes and photocatalysts

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• 作者：E. Zhou^a ; Chenggang Wang^a ; Qinqin Zhao^a ; Zhipeng Li^b ; Minghui Shao^a ; ^{sps_xuxj@ujn.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Xiaolong Deng^a ; Xiaojing Liu^a ; Xijin Xu^a ; ^{phys_xu@hotmail.com" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Molybdenum dioxide ; Supercapacitors ; Photocatalysis
• 刊名：Ceramics International
• 出版年：2016
• 出版时间：1 February 2016
• 年：2016
• 卷：42
• 期：2
• 页码：2198-2203
• 全文大小：777 K

文摘

Molybdenum dioxide (MoO₂) nanoparticles with the size of 200 nm in diameter were synthesized by a facile hydrothermal method. The nanoparticles were directly functionalized as supercapacitors (SCs) electrodes and photocatalysts. The electrochemical studies showed that the SCs demonstrated high capacitance of 621 F g⁻¹, which was 3 times larger than previous reports. Furthermore, they exhibited good cyclic performance with 90% capacity retention after 1000 cycles at a current density of 1 A g⁻¹. The photocatalytic activities were evaluated by the degradation of methylene blue (MB) and rhodamine B (RhB), respectively, and the nanoparticles demonstrated preferred selectivity on the degradation of RhB (70%) than that of MB (30%).