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A 20-core copper(I) nanocluster as electron–hole recombination inhibitor on TiO2 nanosheets for enhancing photocatalytic H2 evolution
Nanoscale ( IF 5.8 ) Pub Date : 2021-09-08 , DOI: 10.1039/d1nr04683g Yun-Dong Cao 1 , Hui-Ping Hao 2 , Hua-Shi Liu 1 , Di Yin 1 , Ming-Liang Wang 1 , Guang-Gang Gao 1 , Lin-Lin Fan 1 , Hong Liu 1
Nanoscale ( IF 5.8 ) Pub Date : 2021-09-08 , DOI: 10.1039/d1nr04683g Yun-Dong Cao 1 , Hui-Ping Hao 2 , Hua-Shi Liu 1 , Di Yin 1 , Ming-Liang Wang 1 , Guang-Gang Gao 1 , Lin-Lin Fan 1 , Hong Liu 1
Affiliation
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For the design of atom-precise copper nanoclusters, besides the exploration of their aesthetic cage-like architectures, their structural modulation and potential applications are being extensively explored. Herein, an atom-precise 20-core copper(I)-alkynyl nanocluster (UJN-Cu20) protected by ethinyloestradiol ligands issynthesized. By virtue of outer-shell hydroxyl groups, UJN-Cu20 could be uniformly modified on the surface of TiO2 nanosheets via hydrogen bonding interactions, thus forming an efficient nanocomposite photocatalyst for hydrogen evolution. By constructing a Z-scheme heterojunction, the photocatalytic hydrogen evolution activity of the nanocomposite (13 mmol g−1 h−1) significantly improved as compared to that of TiO2 nanosheets (0.4 mmol g−1 h−1). As a narrow bandgap cocatalyst, UJN-Cu20 is confirmed to effectively inhibit the electron–hole recombination on the surface of the TiO2 nanosheet, which provides a new concept for the design of copper cluster-assisted effective photocatalysts.
中文翻译：
20 核铜 (I) 纳米团簇作为 TiO2 纳米片上的电子-空穴复合抑制剂以增强光催化 H2 析出
对于原子级精确铜纳米团簇的设计，除了探索其美学笼状结构外，还广泛探索了它们的结构调制和潜在应用。在此，合成了由炔雌醇配体保护的原子级精确的 20 核铜 ( I )-炔基纳米团簇 ( UJN-Cu 20 )。凭借外壳羟基，UJN-Cu 20可以通过氢键相互作用在TiO 2纳米片表面均匀改性，从而形成有效的析氢纳米复合光催化剂。通过构建 Z 型异质结，纳米复合材料的光催化析氢活性 (13 mmol g-1 h -1 ) 与TiO 2纳米片(0.4 mmol g -1 h -1 )相比显着改善。作为窄带隙助催化剂， UJN-Cu 20被证实可有效抑制TiO 2纳米片表面的电子-空穴复合，这为铜簇辅助有效光催化剂的设计提供了新的概念。
更新日期：2021-09-21
中文翻译：
20 核铜 (I) 纳米团簇作为 TiO2 纳米片上的电子-空穴复合抑制剂以增强光催化 H2 析出
对于原子级精确铜纳米团簇的设计，除了探索其美学笼状结构外，还广泛探索了它们的结构调制和潜在应用。在此，合成了由炔雌醇配体保护的原子级精确的 20 核铜 ( I )-炔基纳米团簇 ( UJN-Cu 20 )。凭借外壳羟基，UJN-Cu 20可以通过氢键相互作用在TiO 2纳米片表面均匀改性，从而形成有效的析氢纳米复合光催化剂。通过构建 Z 型异质结，纳米复合材料的光催化析氢活性 (13 mmol g-1 h -1 ) 与TiO 2纳米片(0.4 mmol g -1 h -1 )相比显着改善。作为窄带隙助催化剂， UJN-Cu 20被证实可有效抑制TiO 2纳米片表面的电子-空穴复合，这为铜簇辅助有效光催化剂的设计提供了新的概念。
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