Gao Chang, Wang Dexin, Liu Yanshu, Zhang Guanyun, Liu Caiyun, Said Amir, Niu Huihui, Wang Guo, Tung Chen-Ho, Wang Yifeng
Key Lab for Colloid and Interface Science of Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China.
Department of Chemistry, Capital Normal University, Beijing 100048, China.
Dalton Trans. 2022 Oct 18;51(40):15385-15392. doi: 10.1039/d2dt01882a.
Two nanosized titanium-oxide clusters (TOCs), Ti(μ-O)(μ-O)PA (1; PA = 2-picolinate) and Ti(μ-O)PA (2) were synthesized by using 2-picolinic acid and Ti(OPr) in one-pot reactions. Their structures were determined using single-crystal X-ray diffractometry. Although both have the same core composition of TiO, 1 exhibited superior H evolution activity of up to 180 μmol h g, which is nearly eight times faster than 2. Mechanism studies revealed that 1 could induce the assembly of 2.3 nm PtNPs into 10-30 nm supra-nanoparticle structures, which contributed to the increased H evolution rate.
通过在一锅反应中使用2-吡啶甲酸和Ti(OPr)合成了两个纳米级二氧化钛簇（TOCs），即Ti(μ-O)(μ-O)PA（1；PA = 2-吡啶甲酸盐）和Ti(μ-O)PA（2）。使用单晶X射线衍射法确定了它们的结构。尽管两者具有相同的TiO核心组成，但1表现出高达180 μmol h g的优异析氢活性，这几乎是2的八倍快。机理研究表明，1可以诱导2.3 nm的PtNPs组装成10-30 nm的超纳米颗粒结构，这有助于提高析氢速率。
