Fu Jiaju, Zhu Wenlei, Chen Ying, Yin Zhouyang, Li Yuyang, Liu Juan, Zhang Hongyi, Zhu Jun-Jie, Sun Shouheng
Department of Chemistry, Brown University, Providence, RI, 02912, USA.
State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China.
Angew Chem Int Ed Engl. 2019 Oct 1;58(40):14100-14103. doi: 10.1002/anie.201905318. Epub 2019 Aug 29.
We report a new strategy to prepare a composite catalyst for highly efficient electrochemical CO reduction reaction (CO RR). The composite catalyst is made by anchoring Au nanoparticles on Cu nanowires via 4,4'-bipyridine (bipy). The Au-bipy-Cu composite catalyzes the CO RR in 0.1 m KHCO with a total Faradaic efficiency (FE) reaching 90.6 % at -0.9 V to provide C-products, among which CH CHO (25 % FE) dominates the liquid product (HCOO , CH CHO, and CH COO ) distribution (75 %). The enhanced CO RR catalysis demonstrated by Au-bipy-Cu originates from its synergistic Au (CO to CO) and Cu (CO to C-products) catalysis which is further promoted by bipy. The Au-bipy-Cu composite represents a new catalyst system for effective CO RR conversion to C-products.
我们报道了一种制备用于高效电化学CO还原反应（CO RR）的复合催化剂的新策略。该复合催化剂是通过4,4'-联吡啶（bipy）将金纳米颗粒锚定在铜纳米线上制成的。Au-bipy-Cu复合材料在0.1 m KHCO中催化CO RR，在-0.9 V时总法拉第效率（FE）达到90.6%，以提供C产物，其中CH₃CHO（25% FE）在液体产物（HCOO⁻、CH₃CHO和CH₃COO⁻）分布（75%）中占主导地位。Au-bipy-Cu所展示出的增强的CO RR催化作用源于其协同的Au（CO到CO）和Cu（CO到C产物）催化作用，而联吡啶进一步促进了这种作用。Au-bipy-Cu复合材料代表了一种用于将CO RR有效转化为C产物的新型催化剂体系。
