Facile synthesis and enhanced catalytic performance of reduced graphene oxide decorated with hexagonal structure Ni nanoparticles

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• 作者：Zhenyuan Ji^a ; Yuqin Wang^a ; Xiaoping Shen^a ; ^{xiaopingshen@163.com" class="auth_mail" title="E-mail the corresponding author} ; Hanyu Ma^a ; Juan Yang^a ; ; Aihua Yuan^b ; Hu Zhou^b
• 关键词：Graphene ; Nickel ; Nanocomposites ; Synthesis ; Catalysis
• 刊名：Journal of Colloid and Interface Science
• 出版年：2017
• 出版时间：1 February 2017
• 年：2017
• 卷：487
• 期：Complete
• 页码：223-230
• 全文大小：1247 K

文摘

In this study, reduced graphene oxide (RGO) supported Ni nanoparticles were synthesized by a facile in-situ refluxing approach using triethylene glycol as both reductive and dispersing agent. The as-synthesized RGO/Ni nanocomposites were characterized by X-ray diffraction, Raman spectroscopy and transmission electron microscopy, which revealed that Ni nanoparticles with hexagonal close-packed structure were homogeneously dispersed on the surface of RGO sheets. The catalytic activity and electrochemical properties of the RGO/Ni nanocomposites were investigated. It is found that the RGO/Ni nanocomposites exhibit markedly enhanced catalytic activity toward the reduction of p-nitrophenol by NaBH₄, which is comparable to noble metal catalyst. The RGO/Ni nanocomposites also exhibited excellent electrocatalytic response to glucose. The linear range, detection limit and sensitivity were estimated to be 0.01–3.0 mM (R² = 0.997), 2.8 μM and 535.258 μA mM⁻¹ cm⁻², respectively. It is expected that this facile method presented here could be extended to synthesize other RGO/metal nanocomposites with various functions.