![Enhanced LSPR effect on NiFeAl for effective photothermal catalysis of CO2 methanation. Source: Science China Press Efficient photothermal CO2 methanation through NiFe alloy nanoparticles](https://scx1.b-cdn.net/csz/news/800a/2024/efficient-photothermal.jpg)
Enhanced LSPR effect on NiFeAl for effective photothermal catalysis of CO2 Methanation. Source: Science China Press
Large emissions of CO2 The use of fossil fuels is causing a series of environmental problems and climate change. Thanks to the rapid development of green hydrogen and CO2 Capture technology, hydrogenation of CO2 Using hydrocarbon fuels and chemicals is becoming a promising process for reducing carbon emissions and storing renewable energy. Efficient CO possible through photothermal catalysis2 Transformation under mild conditions.
A study led by Professor Kang Cheng (School of Chemical and Chemical Engineering, Xiamen University) and Professor Ye Wang (School of Chemical and Chemical Engineering, Xiamen University) evaluated the catalyst using a high-pressure fixed bed quartz reactor. There is a square hole in the center to introduce light. The study was published in the journal ScienceChineseChemistry.
A series of NiFe alloy photothermal catalysts were synthesized using the urea-assisted precipitation method for CO.2 Process of methanation of Al-containing bimetallic NiFe nanoparticles2othree As a structural promoter, the Ni/Fe atomic ratio of 7 showed the best catalytic performance.
public2 The conversion rate can reach 98%, CH4 Selectivity is 99% without external heating. The catalyst can operate reliably for over 100 hours. Compared with other catalysts, it was shown that the small alloy particle size (~21 nm) and unique layer structure of NiFeAl catalyst can enhance the LSPR effect of NiFe alloy.
Compared with Ni or Fe, NiFe alloy can promote CO.2 Synergistically methanates. When light is irradiated with an infrared camera, the temperature of the catalyst surface reaches 356°C, showing that the catalyst can efficiently convert light energy into heat energy.
This paper not only prepared an efficient catalyst for CO2 It also provided ideas for the structural design of photothermal catalysts as well as methanation.
Additional information:
Jiarong Li et al., Efficient photothermal CO2 methanation on NiFe alloy nanoparticles with enhanced localized surface plasmon resonance effect; ScienceChineseChemistry (2023). DOI: 10.1007/s11426-023-1876-4
Provided by Science China Press
Summons: Efficient photothermal CO2 methanation via NiFe alloy nanoparticles (2024, January 30) 2024 1 from https://phys.org/news/2024-01-efficient-photothermal-co8322-mthanation-nife.html Retrieved on the 31st of the month
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