Anchoring CuO Nanoparticles On C, N‐Codoped G‐C3N4 Nanosheets from Melamine‐Entrapped MOF Gel for High‐Efficiency Oxygen Evolution. Issue 9 (1st August 2019)

• Record Type: Journal Article
• Authors: Zhao, Lu; Kuang, Xuan; Liu, Zhaoxuan; Hou, Ying; Wang, Zhiling; Wei, Qin; Lee, Jin Yong; Kang, Baotao
• Is Part Of: ChemNanoMat. Volume 5:Issue 9(2019)
• Page Start: 1170
• Page End: 1175
• Publication Date: 2019-08-01
• Subjects: oxygen evolution reaction -- metal-organic framework gel -- electrocatalysis -- graphitic carbon nitride -- nanosheets; Nanochemistry -- Periodicals; Nanostructured materials -- Periodicals; Nanochemistry; Nanostructured materials; Periodicals; 541.2
• DOI: 10.1002/cnma.201900249
• Languages: English
• ISSNs: 2199-692X

Abstract

Abstract: Facile engineering of transitional metal oxide nanoparticles (NPs) homogeneously anchored on graphitic carbon nitride ( g ‐C3 N4 ) is very important. Herein, we develop a rapid and facile route to synthesize CuO NPs‐ and C, N‐codoped g ‐C3 N4 nanosheets grown on Ni foil (CuO/CN−C3 N4 /Ni‐f), derived from the oxidation‐pyrolysis of melamine‐entrapped Cu(II)‐MOF gel in the air. A detailed growth process for the hierarchical structure is studied. The obtained hierarchical structure without any binders used directly as an electrode only needs an overpotential of 223 mV to achieve a current density of 50 mA cm −2 in 0.5 M KOH, implying its highly efficient electrocatalytic activity. Notably, this material also exhibits strong long‐term durability. Free energy calculations show that the intrinsic origin of the outstanding activity is derived from sufficient exposure of active sites for CuO NPs anchored on the nanosheets and high N content. Abstract : Evolving oxygen : Hierarchical CuO NPs‐ and C, N‐codoped g‐C3 N4 nanosheets were grown on Ni foil and derived from the oxidation‐pyrolysis of melamine‐entrapped Cu(II)‐MOF gel. The resulting material exhibits excellent electrocatalytic activity for the oxygen evolution reaction.