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Efficient Visible-Light-Driven Hydrogen Production over Cu-Modified Polyoxotungstate Hybrids
Inorganic Chemistry ( IF 4.6 ) Pub Date : 2022-12-02 , DOI: 10.1021/acs.inorgchem.2c03028
Yin-Hua Zhu 1 , Ze-Yu Du 1 , Ji-Lei Wang 1 , Jian-Bo Yang 1 , Hua Mei 1 , Yan Xu 1, 2
Affiliation  

Hydrogen energy is a renewable and clean source, which makes a great difference in future sustainable energy systems. Visible-light-driven photocatalysis reaction involves harnessing the abundance of sunlight for hydrogen production among many catalytic technologies. However, the fabrication of photocatalysts that have distinctive performance in visible light is still the primary challenge. Herein, two new Cu-modified polyoxotungstate hybrids, {[Cu2(bim)4(H2O)2](HBW12O40)2·(H2bim)2·8H2O} (1) (bim = [1,1′-methylenebis(1H-imidazole)]) and {[Cu2(bim)4(H2O)2](H3PW10Ti2O40)2·(H2bim)2·8H2O} (2), have been successfully isolated by bridging two saturated Keggin polyoxotungstates and copper-azole complexes. Not surprisingly, 2 holds higher reduction activity due to the more negative charge and stronger basicity on the terminal oxygen of Ti═O and bridge oxygen of Ti–O–W. The H2 yield was 17075 μmol g–1 h–1 for 2 in the tunable light-driven H2 production system, which is promising in the field of photocatalysis.

中文翻译:

Cu 改性多钨酸盐杂化物的高效可见光驱动制氢

氢能是一种可再生的清洁能源,对未来的可持续能源系统具有重要意义。在许多催化技术中,可见光驱动的光催化反应涉及利用丰富的阳光来生产氢气。然而,制造在可见光下具有独特性能的光催化剂仍然是主要的挑战。在此,两种新的 Cu 改性聚氧钨酸盐杂化物 {[Cu 2 (bim) 4 (H 2 O) 2 ](HBW 12 O 40 ) 2 ·(H 2 bim) 2 ·8H 2 O} ( 1 ) (bim = [1,1'-亚甲基双(1 H-咪唑)])和{[Cu 2 (bim) 4 (H 2 O) 2 ](H 3 PW 10 Ti 2 O 40 ) 2 ·(H 2 bim) 2 ·8H 2 O} ( 2 ),通过桥接两种饱和的 Keggin 多钨酸盐和铜-唑络合物成功分离。毫不奇怪,由于 Ti=O 的末端氧和 Ti-O-W 的桥氧具有更多的负电荷和更强的碱性,因此2具有更高的还原活性。2的H 2产率为 17075 μmol g –1 h –1在可调谐光驱动H 2生产系统中,这在光催化领域很有前途。
更新日期:2022-12-02
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