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2 Polish Journal of Chemical Technology

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Study on synthesis and photoelectric properties of AgInS2 quantum dots

Yuan Binxia, Luo Zige, Sun Yongjun, Cao Sheng, Cao Lan, Li Min

Polish Journal of Chemical Technology

2022

Vol. 24, nr 2

21--26

AgInS2 Quantum dots (AIS QDs) have high quantum yield and catalytic performance, which is promising materials in photo-catalytic and optoelectronic fields. In the paper, it adopted a simple and non-toxic method to synthesize AIS QDs. The effect of reaction temperature on the growth mechanism, optical and physical properties of AIS had been extensively investigated by using L-cysteine as the sulfur source, and their application in catalytic hydrogen production was also studied. The results demonstrated that the fluorescence properties will be quenched with the increase of temperature, indicating that the separation speed of electron hole pairs of samples obtained at higher temperature was faster. Meantime, the electron transport capacity and the photocurrent had also improved with the increase of reaction temperature. Finally, the sample obtained at 100 oC had higher hydrogen production rate.

Nitrogen-doped Carbon Catalyst by Ultrasonic for Electrocatalytic CO2 Reduction

Liu Jianfeng, Wang Ting, Zhang Zhenhai, Ning Kai, Yin Shibin, Yuan Binxia

Polish Journal of Chemical Technology

2020

Vol. 22, nr 3

24--28

The electrocatalytic reduction of carbon dioxide into valued chemicals such as formic acid has the most promising potential in applying renewable energy for useful materials and mitigating the greenhouse effect. However, the studies still focus on developing catalysts with low price and high catalytic properties. In this study, nitrogen atoms were decorated into carbon structure by a unique ultrasonic method, then the nitrogen-doped carbon material was applied as catalyst in CO2 reduction, it exhibited excellent electrochemical activity, 4 times higher than the normal method. The improved activity should be attributed to the interaction between nitrogen and carbon atoms through analysis.