image: Zn-decorated GaN nanowires demonstrate efficient CO2 conversion to CH4 and H2O2 under light.
Credit: ©Science China Press
Global efforts to mitigate climate change and reduce CO2 emissions have inspired research in artificial photosynthesis, which mimics nature’s ability to convert sunlight, water, and carbon dioxide into valuable fuels and chemicals. A research team led by Prof. Baowen Zhou and executed primarily by Dr. Muhammad Salman Nasir has developed an innovative Zn-decorated GaN nanowire catalyst. This catalyst achieves high-efficiency conversion of CO2 and H2O into methane (CH4) and hydrogen peroxide (H2O2) under light irradiation, offering a practical solution for sustainable fuel production.
The catalyst achieved a CH4 production rate of 189 mmol g–1 h–1 with 93.6% selectivity and maintained activity for over 80 hours without degradation. This system offers dual benefits: fuel generation (CH4) for energy storage and H2O2 synthesis for industrial applications. Mechanistic studies revealed that the interaction between Zn nanoclusters and GaN nanowires enhances the formation of the formate (HCOO*) intermediate, improving efficiency and selectivity.
This research provides a pathway toward carbon neutrality by integrating renewable energy with fuel production and chemical synthesis. It also opens new possibilities for utilizing CO2 emissions and converting them into value-added products, contributing to global climate goals.
Journal
Science Bulletin