The regulatory effect of polyvinyl pyrrolidone on the microstructure and catalytic activity of Nickel phosphide (cas 11104-08-8)s

Add time:07/26/2019    Source:sciencedirect.com

Phase-controlled and shape-controlled nickel phosphides were synthesized using nickel chloride, nontoxic red phosphorus and polyvinyl pyrrolidone (PVP). The hexagonal Ni2P and tetragonal Ni12P5 could be transformed via adjusting the amount of polyvinyl pyrrolidone. Besides, the addition of PVP could regulate the particle size of nickel phosphides, so that the large irregular shaped nickel phosphides turned into homogeneous nanoparticles, which further formed three-dimensional porous structure. And its formation mechanism has also been discussed in this paper. The hydrodechlorination catalytic activities of nickel phosphides were promoted markedly with moderate quantity of PVP. While, excessive PVP would cover the active sites of catalysts and lead the catalytic activity decreased.

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