23:T4d9,Controlling and tuning surface properties of a catalyst have always been a prime challenge for efficient hydrogen production via water splitting. Here, we report a facile method for tuning both charger transfer and sorption-desorption properties of NiFe layered double hydroxide (LDH) by intercalating a conductive polymer of polypyrrole (ppy) via an interlayer confined polymerization synthesis (ICPS) process. Ex situ characterizations and in situ electrochemical quartz-crystal microbalance with dissipation (EQCM-D) tracking experiments showed that the intercalated ppy not only improved the charge transfer property of the resulting hybrid catalyst LDH-ppy but also made it more flexible and adaptive for quick and reversible sorption-desorption of reactants and intermediates during the oxygen evolution reaction (OER) process. Consequently, the as-prepared LDH-ppy exhibited a doubled catalytic current density over the bare LDH, as visualized by in situ scanning electrochemical microscopy (SECM) at the subnanometer scale. This work sheds light on orchestrating the charge and sorbate transfer abilities of catalysts for efficient water splitting by smartly combining inorganic and organic layers.24:T4bb,The Cu/Zn ratio of the CuZn electrocatalyst is known to influence the selectivity of CO2RR, but questions remain open about how microstructure, crystal phase, and oxidation state of the metal ions change and interplay in the composition tuning process, which need to be carefully addressed for rational catalyst design. Toward this end, we designed and synthesized a series of CuZn-based aerogel materials with controlled Cu/Zn ratios and systematically investigated their effects on CO2RR catalysis. From both experimental results and theoretical calculations, we found that the introduction of Zn into Cu aerogel greatly promoted the production of CO primarily due to the unfavorable adsorption energy of *H. Surprisingly, the intake of trace Ni atoms further inhibited the H2 evolution reaction on account of the strong pinning of both *H and H2O* on the Ni sites. Therefore, the as-formed CuZn-Ni aerogel exhibited a much-improved catalytic activity and selectivity for CO generation with FE(CO) increased to 80% from 60%. This work gives insights into the surface adsorption–desorption characteristics underlying the activity and selectivity of electrocatalysts, which is of general importance for CO2RR.25:T4a7,Copper-based catalysts are efficient for CO₂ reduction affording commodity chemicals. However, Cu(i) active species are easily reduced to Cu(0) during the CO₂RR, leading to a rapid decay of catalytic performance. Herein, we report a hybrid-catalyst that firmly anchors 2D-Cu metallic dots on F-doped Cu _x O nanoplates (Cu _x OF), synthesized by electrochemical-transformation under the same conditions as the targeted CO₂RR. The as-prepared Cu/Cu _x OF hybrid showed unusual catalytic activity towards the CO₂RR for CH₃COO^- generation, with a high FE of 27% at extremely low potentials. The combined experimental and theoretical results show that nanoscale hybridization engenders an effective s,p-d coupling in Cu/Cu _x OF, raising the d-band center of Cu and thus enhancing electroactivity and selectivity for the acetate formation. This work highlights the use of electronic interactions to bias a hybrid catalyst towards a particular pathway, which is critical for tuning the activity and selectivity of copper-based catalysts for the CO₂RR.26:T559,Electrocatalytic reduction of CO 2 to formate is believed to be one of the most promising technologies for producing clean fuels and valuable chemicals and for tackling the global warming problem. Herein, a novel synthesis strategy is presented for Bi‐based catalyst in CO 2 reduction reaction (CO 2 RR). With the addition of acetic acid into the mother solution, heterostructured Bi/Bi 2 O 3 nanoplates with abundant O

#	Concept	H-Index	Publications	Citations
1	Engineering	2	2	63
2	Chemical Engineering	2	2	63
3	Chemistry	2	2	63
4	Materials Science	2	2	63
5	Catalysis	2	2	63

	Year	Citations

About

Top Concepts