Bimetal MOF Derived Mesocrystal ZnCo2O4 on rGO with High Performance in Visible-light Photocatalytic NO Oxidization
Bimetal MOF Derived Mesocrystal ZnCo2O4 on rGO with High Performance in Visible-light Photocatalytic NO Oxidization
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rGO 上双金属 MOF 衍生的介晶 ZnCo2O4 具有高性能可见光光催化 NO 氧化
DOI：
10.1016/j.apcatb.2018.05.033
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Chen Wei
中科院分区：
文献类型：
--
作者：
Xiao SN;Pan DL;Liang R;Dai WR;Zhang QT;Zhang GQ;Su CL;Li HX;Chen Wei
通过对 rGO 上的双金属有机骨架进行低温退火，成功合成了还原氧化石墨烯 (rGO) 上的介晶 ZnCo2O4 纳米复合材料。在这种纳米复合材料中，rGO纳米片作为二维支撑体，显着提高了纳米复合材料的分散性和导电性。由 ZnCo-ZIF 衍生的介孔 ZnCo2O4 晶体作为主要活性位点，具有优化的 Zn/Co 比例，以确保理想的价带结构以及增强的可见光捕获性能。所制备的rGO@ZnCo2O4纳米复合材料在可见光光催化NO氧化方面表现出显着的活性，在可见光下的转化率为83.8%，在模拟太阳光下的转化率为92.6%。它还表现出比 N 掺杂 TiO2 更高的稳定性，从而使这种纳米复合材料成为一种有前途且稳定的环境修复光催化剂。
A mesocrystal ZnCo2O4on reduced graphene oxide (rGO) nano-composite was successfully synthesized by a low-temperature annealing of bimetal organic frameworks on rGO. In this nano-composite, rGO nanosheets worked as the two-dimensional support to significantly improve the dispersity and conductivity of nano-composites. The mesoporous ZnCo2O4crystal derived from ZnCo-ZIF worked as the main active sites with the optimized Zn/Co ratio to ensure an ideal valence band structure as well as enhanced visible-light harvesting properties. The as-prepared rGO@ZnCo2O4nano-composites showed a remarkable activity in visible-light photocatalytic NO oxidation with the conversion of 83.8% under visible light and 92.6% under simulated solar light. It also exhibited a higher stability than that of N-doped TiO2, thereby making this nano-composite as a promising and stable photocatalyst for environmental remediation.