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首页> 外文期刊>Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications >Metal-organic framework as nanoreactors to co-incorporate carbon nanodots and CdS quantum dots into the pores for improved H2 evolution without noble-metal cocatalyst
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Metal-organic framework as nanoreactors to co-incorporate carbon nanodots and CdS quantum dots into the pores for improved H2 evolution without noble-metal cocatalyst

机译：金属有机框架作为纳米反应器，将碳纳米蛋白和CDS量子点共掺入孔中，以改善H2进化而无贵金属助催化剂

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摘要

Avoiding the utilization of noble-metal cocatalyst and the aggregation of nano photocatalysts in the preparation and photocatalytic reaction are two important aspects in the area of photocatalytic H-2 evolution. In this work, for the first time, CdS quantum dots and carbon nanodots (CDs) were successfully co-immobilized in the cages of MIL-101 by one-step double solvents method followed by heating treatment. The optimum photocatalytic H-2 evolution rate of CD/CdS@MIL-101(50) composite with CDs content of 5.2 wt% exhibits a H-2 evolution rate of 14.66 mu mol h(-1) without noble metal assisted under visible-light irradiation, which is 8.5 and 18.6 times higher than that of CdS@MIL-101 and bare CdS, respectively. The improved photocatalytic H-2-production activity of CD/CdS@MIL-101 ternary composite is predominantly attributed to the effect of CDs, which mainly serves as an electron collector to efficiently prolong the lifetime of the photogenerated charge carriers from CdS@MIL-101 heterostructure. This work provide a new strategy of one-step double solvents method to co-incorporate two functional species to the pores of metal-organic frameworks (MOFs) to improve the photocatalytic H-2 evolution activity of host photocatalyst.
机译：避免使用贵金属助催化剂的利用率和纳米光催化剂在制备和光催化反应中的聚集是光催化H-2进化面积的两个重要方面。在这项工作中，首次，CDS量子点和碳纳米蛋白（CDS）通过一步的双溶剂方法在MIL-101的笼中成功地固定在MIL-101的笼中，然后进行加热处理。 CD / Cds @ MIL-101（50）复合材料的最佳光催化H-2演化速率，CDS含量为5.2wt％，具有14.66μmolH（-1）的H-2演化速率，无惰性金属在可见的情况下辅助光辐射分别比CDS @ MIL-101和裸CDS高8.5％和18.6倍。 CD / CDS @ MIL-101三元复合材料的改善的光催化H-2-生产活性主要归因于CD的效果，这主要用作电子收集器，以有效地延长来自CDS @ MIL的光生电载体的寿命。 101异质结构。这项工作提供了一种新的一步双溶剂方法的新策略，将两种功能物种与金属 - 有机骨架（MOF）的孔共同合并，以改善宿主光催化剂的光催化H-2进化活性。

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