双金属磷化物NiCoP：一种用于还原4-硝基苯酚的增强型催化剂。
Bi-Metal Phosphide NiCoP: An Enhanced Catalyst for the Reduction of 4-Nitrophenol.
作者信息
Sun Lijie, Xiang Xia, Wu Juwei, Cai Chao, Ao Dongyi, Luo Jinling, Tian Chengxiang, Zu Xiaotao
机构信息
School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, China.
Institute of Fundamental and Frontier Science, University of Electronic Science and Technology of China, Chengdu 610054, China.
出版信息
Nanomaterials (Basel). 2019 Jan 18;9(1):112. doi: 10.3390/nano9010112.
Porous phosphide NiCoP composite nanomaterials are successfully synthesized at different Ni/Co ratios (=0, 0.5, 1, and 2) to reduce 4-nitrophenol. The X-ray diffraction and X-ray photoelectron spectroscopy results demonstrate that the products are CoP, NiCoP/CoP, NiCoP, and NiCoP/Ni₂P when the Ni/Co ratio is 0, 0.5, 1, and 2, respectively. The products exhibit different catalytic performance for reduction of 4-nitrophenol at room temperature. Among them, the pure NiCoP delivers a better catalytic efficiency with k app = 677.4 × 10 - 2 min - 1 and k = 338.7 ( Lg - 1 min - 1 ) , due to the synergy between Ni and Co atoms. The sequence of catalytic efficiency of different samples is CoP < NiCoP/CoP < NiCoP/Ni₂P < NiCoP.
成功合成了不同镍钴比（=0、0.5、1和2）的多孔磷化物NiCoP复合纳米材料用于还原4-硝基苯酚。X射线衍射和X射线光电子能谱结果表明，当镍钴比分别为0、0.5、1和2时，产物分别为CoP、NiCoP/CoP、NiCoP和NiCoP/Ni₂P。这些产物在室温下对4-硝基苯酚的还原表现出不同的催化性能。其中，纯NiCoP由于镍和钴原子之间的协同作用，具有更好的催化效率，表观速率常数k app = 677.4 × 10⁻² min⁻¹，速率常数k = 338.7 （L g⁻¹ min⁻¹）。不同样品的催化效率顺序为CoP < NiCoP/CoP < NiCoP/Ni₂P < NiCoP。
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