A Hybrid Assembly with Nickel Poly‐Pyridine Polymer on CdS Quantum Dots for Photo‐Reducing CO2 into Syngas with Controlled H2/CO Ratios

• Published in: ChemSusChem Vol. 15; no. 8; pp. e202200200 - n/a
• Main Authors: Wang, Hong‐Yan, Xie, Wei‐Hua, Wei, Dong‐Dong, Hu, Rong, Wang, Na, Chang, Kai, Lei, Shuang‐Lei, Wang, Bin, Cao, Rui
• Format: Journal Article
• Language: English
• Published: Weinheim Wiley Subscription Services, Inc 22.04.2022
• Subjects: Assembly; Cadmium sulfide; Carbon dioxide; Light irradiation; Photocatalysis; photoreduction; Pyridines; Quantum dots; Selectivity; syngas; Synthesis gas
• ISSN: 1864-5631; 1864-564X; 1864-564X
• DOI: 10.1002/cssc.202200200

A hybrid photocatalytic assembly with Ni poly‐pyridine polymers binding on CdS quantum dots was developed via thiophene immobilization. The fabricated hybrid assembly facilitated efficient charge separation, and each component endowed great synergy. As a result, a high syngas production rate was achieved over 5500 μmol gcat−1 h−1 from photocatalytic CO2 reduction under visible‐light irradiation, accompanied by an adjustable H2/CO ratio ranging from 4 : 1 to 1 : 3. A novel hybrid assembly was described for syngas synthesis with boosted activity and controlled selectivity, which provides a profile to ingeniously understand molecular‐level design for photocatalysts. CO2 to syngas: A hybrid photocatalyst is assembled by a Ni poly‐pyridine polymer binding on CdS substrate via vinyl‐thiophene towards photo‐reducing CO2 into syngas with tunable H2/CO ratio. Each component in the fabricated hybrid endows great synergy. It shows a robust activity, which is superior to reported results on semiconductor‐based photocatalysts.