Insight into iron group transition metal phosphides (Fe2P, Co2P, Ni2P) for improving photocatalytic hydrogen generation
Insight into iron group transition metal phosphides (Fe2P, Co2P, Ni2P) for improving photocatalytic hydrogen generation
复制标题
深入了解铁族过渡金属磷化物（Fe2P、Co2P、Ni2P）以改善光催化制氢
DOI：
10.1016/j.apcatb.2019.01.072
复制
发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Majima Tetsuro
中科院分区：
文献类型：
--
作者：
Sun Zhichao;Zhu Mingshan;Lv Xingshuai;Liu Yingya;Shi Chuan;Dai Ying;Wang Anjie;Majima Tetsuro
铁族过渡金属磷化物（TMPs，M= Fe，Co，Ni）被认为是一种很有前途的无贵金属助催化剂。然而，与TMP中的金属类型相关的对H2生成活性的影响仍然没有得到解决。为了研究不同金属组成的金属磷化物对光催化产氢的影响，以三种铁族过渡金属磷化物（M2 P，M=Fe，Co，Ni）纳米粒子作为硫掺杂g-C3 N4（S单键CN）光催化产氢的助催化剂。通过对三种M_2P/S单键CN的比较，在相同条件下，Ni_2P的最佳助催化效果是S单键CN的22.7倍。光致发光（PL）光谱、光电化学表征和密度泛函理论（DFT）计算证实了当S单键CN与Ni 2 P结合时，光诱导电荷转移和能带分离增强。
Iron group transition metal phosphides (TMPs, M= Fe, Co, Ni) have been considered as promising noble-metal-free cocatalysts for the photocatalytic hydrogen (H2) generation. However, the impact on the H2generation activity in correlation with the types of metal in TMPs still remains unresolved. In this paper, to investigate the effect of metal phosphides with different metal on photocatalytic H2generation, three types of iron group transition metal phosphides (M2P, M=Fe, Co, and Ni) nanoparticles were used as the cocatalysts of sulfur doped g-C3N4(Ssingle bondCN) for the photocatalytic H2generation. By comparing three types of M2P/Ssingle bondCN, the optimum cocatalyst of Ni2P hasca.22.7 times that of the pristine Ssingle bondCN under the same condition. The photoluminescence (PL) spectra, photoelectrochemical characterization and DFT calculations confirmed the enhanced photo-induced charge transfer and band separation when Ssingle bondCN was integrated with the Ni2P.