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激活和表面电荷调节,以增强可见光驱动的N₂对MoS₂/UiO-66(SH) ₂的固定

Qingqing Li¹, Yingzhang Shi¹, Zhiwen Wang¹

¹State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fujian 350116, Fuzhou, China.

Journal of colloid and interface science

|September 3, 2023

概括

二硫化物/UiO-66(SH) 2复合材料使用可见光有效地将 (N2) 转化为氨. 10%的复合材料显示出最高的产量,这是由于金属位点的协同效应和增强的电荷分离.

科学领域:

材料科学材料科学材料科学
催化剂是一种催化剂.
摄影化学的使用.

背景情况:

(N2) 固定对农业和工业至关重要.
开发高效和可持续的N2固定光催化剂是一个关键的挑战.
金属有机框架 (MOF) 和过渡金属二甲基化物对光催化有望出现.

研究的目的:

合成和描述MoS2/UiO-66(SH) 2 (MS/UiS) 复合材料作为N2固定的光催化剂.
为了研究结构-活动关系,并优化复合材料组成以提高性能.
为了阐明光催化N2降解为氨的机制.

主要方法:

通过水热合成UiO-66(SH) 2并随后与MoS2结合.
使用XRD,SEM,TEM和XPS等技术进行表征.
在可见光照射下进行光催化N2固定实验.
同位素标记 (15N) 确认N2降解路径.

主要成果:

一系列MS/UiS复合材料已经成功准备好.
10%的MS/UiS复合材料显示出最高的NH4+产率 (54.08 μmol·g-1·h-1).
15N同位素测试证实了有效的N2转化为NH3.
由于丰富的不和Zr和Mo位点增加了活性,促进N2吸附/激活和有效的电荷分离.

结论:

脱水的MoS2/UiO-66(SH) 2复合材料是N2固定的有效光催化剂.
10%的MS/UiS复合材料由于协同效应和优化的电子结构,表现出卓越的性能.
该研究提出了一种涉及激活和接口相互作用的机制,以增强光催化活性.

关键词:

接口互动互动的接口 MoS(2) 超薄的纳米板.活性化的活性化光催化固定的.在UiO-66{SH}{2}中

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