Abstract: The Mo-doped amorphous CuCoMo/boron nitride nanosheets (donated as CuCoMo/BNNSs) nanocomposite catalyst was synthesized by co-reduction method, and BNNSs were obtained by polyvinylpyrrolidone (PVP) assisted sodium hydroxide crystallization. The structure and morphology of the nanocomposite catalyst were characterized by X-ray powder diffraction (XRD), fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electronic microscopy (TEM), high resolution transmission electronic microscopy (HRTEM) and selected area electron diffraction (SAED). Due to Mo doping, the effect of CuCoMo/BNNSs’s catalytic activity for ammonia borane (AB) hydrolysis was investigated. The results showed that Mo acts as an electron donor when transferring electrons to CuCo NPs, which enhances the interaction among metals in the catalyst and improves the hydrolysis performance of AB. The activity test showed that the amorphous (CuCo)0.85Mo0.15/BNNSs nanocomposite catalyst had extremely high catalytic activity for hydrolysis of AB under room temperature when pH=14, and the turn over frequency (TOF) value was as high as 179.17 mol H2·mol-1 metal·min-1. It is demonstrated for the first time that amorphous CuCoMo NPs are key active components in the catalytic hydrolysis of AB. This electron transfer is not limited to CuCoMo NPs, but can also be extended to CuCoW (156.77 mol H2·mol-1 metal·min-1) and CuCoCr (125.42 mol H2·mol-1 metal·min-1) NPs. Moreover, the catalytic mechanism of nanocomposite catalysts for AB hydrolysis was analyzed by combining the characte-rization results with experimental results.
翟佳欣, 李国华, 甘思平, 胡恩言, 张晓蕊. Mo掺杂对CuCo/BNNSs纳米复合材料催化氨硼烷水解活性的影响[J]. 材料导报, 2020, 34(16): 16031-16036.
ZHAI Jiaxin, LI Guohua, GAN Siping, HU Enyan, ZHANG Xiaorui. Effect of Mo Doping on the Catalytic Activity of CuCo/BNNSs Nanocomposites for Ammonia Boron Hydrolysis. Materials Reports, 2020, 34(16): 16031-16036.
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2020, Vol. 34 
