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首页> 外文期刊>Nanotechnology >Electrocatalytic CO2 reduction near the theoretical potential in water using Ru complex supported on carbon nanotubes
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Electrocatalytic CO2 reduction near the theoretical potential in water using Ru complex supported on carbon nanotubes

机译：使用Ru复合物在碳纳米管上负载的电催化二氧化碳减少在水中的理论潜力附近

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We successfully developed a highly efficient electrode for CO2 reduction using a Ru-complex catalyst ([Ru]) supported on carbon paper coated with multi-walled carbon nanotubes (CPCNT/[Ru]). The CPCNT/[Ru] electrode promoted the CO2 reduction reaction in aqueous solution near the theoretical potential, and produced formate linearly with a current density of greater than 0.9 mA cm(-2) at -0.15 V (versus RHE) for at least 24 h. Due to the outstandingly low overpotential, a monolithic tablet-shaped photo-device was realized by coupling the CPCNT/[Ru] catalyst with amorphous SiGe-jn as a light absorber and IrOx as a water oxidation catalyst, and the device produced formate from CO2 and water in a single-compartment reactor. The nanotubes enhanced the rate for CO2 reduction at [Ru], and accordingly a solar-to-chemical conversion efficiency of 4.3% for formate production was achieved when the CO2 reduction and H2O oxidation sites had the same area.
机译：我们成功地开发了一种高效的电极，用于使用涂有多壁碳纳米管的碳纸（CPCNT / [Ru]）支撑的Ru-络合物催化剂（[Ru]）进行高效电极。 CPCNT / [Ru]电极在理论电位附近的水溶液中促进CO 2还原反应，并在-0.15V（与RHE）的电流密度为-0.15V（与RHE）的电流密度线性地制备至少24个 H。 由于截然不同的低过电位，通过将CPCNT / [RU]催化剂与无定形SiGE-JN偶联为光吸收剂和IROX作为水氧化催化剂来实现单片片状光电装置，并且从CO 2产生甲酸盐的装置 和单室反应器中的水。 纳米管增强了[Ru]的CO2还原的速率，因此当CO 2还原和H2O氧化位点具有相同的区域时，实现了甲酸盐产生的4.3％的太阳能转化效率。

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