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Liquid-Metal-Enabled Mechanical-Energy-Induced CO2 Conversion
Advanced Materials ( IF 29.4 ) Pub Date : 2021-10-06 , DOI: 10.1002/adma.202105789
Junma Tang 1 , Jianbo Tang 1 , Mohannad Mayyas 1 , Mohammad B Ghasemian 1 , Jing Sun 1 , Md Arifur Rahim 1 , Jiong Yang 1 , Jialuo Han 1 , Douglas J Lawes 2 , Rouhollah Jalili 1 , Torben Daeneke 3 , Maricruz G Saborio 1 , Zhenbang Cao 1 , Claudia A Echeverria 1 , Francois-Marie Allioux 1 , Ali Zavabeti 4 , Jessica Hamilton 5 , Valerie Mitchell 5 , Anthony P O'Mullane 6 , Richard B Kaner 7, 8 , Dorna Esrafilzadeh 9 , Michael D Dickey 10 , Kourosh Kalantar-Zadeh 1
Affiliation  

A green carbon capture and conversion technology offering scalability and economic viability for mitigating CO2 emissions is reported. The technology uses suspensions of gallium liquid metal to reduce CO2 into carbonaceous solid products and O2 at near room temperature. The nonpolar nature of the liquid gallium interface allows the solid products to instantaneously exfoliate, hence keeping active sites accessible. The solid co-contributor of silver–gallium rods ensures a cyclic sustainable process. The overall process relies on mechanical energy as the input, which drives nano-dimensional triboelectrochemical reactions. When a gallium/silver fluoride mix at 7:1 mass ratio is employed to create the reaction material, 92% efficiency is obtained at a remarkably low input energy of 230 kWh (excluding the energy used for dissolving CO2) for the capture and conversion of a tonne of CO2. This green technology presents an economical solution for CO2 emissions.

中文翻译:

液态金属启用的机械能诱导二氧化碳转化

报告了一种绿色碳捕获和转化技术,可为减少 CO 2排放提供可扩展性和经济可行性。该技术使用镓液态金属的悬浮液将CO 2还原为碳质固体产物和O 2在接近室温。液态镓界面的非极性特性允许固体产品瞬间脱落,从而保持活性位点可接近。银镓棒的固体共同贡献者确保了一个循环可持续的过程。整个过程依靠机械能作为输入,驱动纳米维摩擦电化学反应。当采用质量比为 7:1 的镓/氟化银混合物来制备反应材料时,在 230 kWh 的极低输入能量(不包括用于溶解 CO 2的能量)下获得 92% 的效率用于捕获和转化一吨CO 2。这种绿色技术为 CO 2排放提供了一种经济的解决方案。
更新日期:2021-10-06
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