铂修饰花状石墨烯催化还原CO_2反应

The Catalytic Effect of Pt Decorated f-rGO on CO_2 Reduction

为了利用太阳能将CO_2选择性转化为高价值化工品,首次制备了担载于泡沫铜的载铂花状石墨烯电阴极与镀铂TiO_2纳米管光阳极协同光电还原CO_2。阴极催化剂的SEM图显示,载铂石墨烯呈现明显的花状结构,而阳极载铂二氧化钛纳米管的XRD图显示,经过反应的二氧化钛纳米管结构稳定,表明在反应过程中二氧化钛纳米管能够稳定的提供协同催化作用。与纯光照或纯电催化还原CO_2相比,光电协同催化有效提高了CO_2还原效率,使得产物C原子转化率达到998.6 nmol/(h·cm^2)。

In order to selectively reduce CO2 to valuable chemicals, a novel Pt decorated f-rGO depositing on Cu foam cathode was fabricated. And it was firstly used in CO2photoelectrochemical reduction reaction with the synergy of TiO2 nanotubes as the anode. According to the SEM pattern, the Pt decorated rGO showed flower like structures, and the XRD pattern of the TiO2 nanotubes before and after the reaction showed that the TiO2 nanotubes stayed stable during the reaction. Compared with the photo catalytic CO2 reduction and electrochemical CO2reduction, the photoelectrochemical reduction of CO2result showed an obvious increase, and the total carbon conversion rate was up to 998.6 nmol/（h.cm2）.