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- W4205490090 abstract "Bi/K co-doped TiO x is synthesized as the catalyst for electrochemical nitrogen reduction. This material delivers a high NH 3 yield rate (32.02 μg h −1 mg cat. −1 ) and faradaic efficiency (12.71%), as well as excellent stability. Electrocatalytic nitrogen reduction reaction (eNRR) at the ambient conditions is attractive for ammonia (NH 3 ) synthesis due to its energy-efficient and eco-friendly features. However, the extremely strong N≡N triple-bonds in nitrogen molecules and the competitive hydrogen evolution reaction lead to the unsatisfactory NH 3 yield and the Faradaic efficiency (FE) of eNRR, making the development of high-performance catalysts with adequate active sites and high selectivity essential for further development of eNRR. Addressing this, we herein report a Bi and K dual-doped titanium oxide (BTO@KTO) material, which is prepared by a cation exchange reaction between K 2 Ti 4 O 9 and molten BiCl 3 , for high-performance eNRR catalysts. Benefiting from the controllable molten-salt cation exchange process, a highly active surface containing Bi/K sites and rich oxygen vacancies has been obtained on titanium oxide. Under the synergy of these two merits, an efficient eNRR catalysis, with the NH 3 yield rate of 32.02 μg h −1 mg cat. −1 and the FE of 12.71%, has been achieved, much superior to that of pristine K 2 Ti 4 O 9 . This work thus offers a high-performance electrocatalyst for eNRR, and more importantly, a versatile cation-exchange strategy for efficiently manipulating materials' functionalities." @default.
- W4205490090 created "2022-01-25" @default.
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- W4205490090 date "2022-06-01" @default.
- W4205490090 modified "2023-10-10" @default.
- W4205490090 title "Ion-exchange-induced Bi and K dual-doping of TiO in molten salts for high-performance electrochemical nitrogen reduction" @default.
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- W4205490090 doi "https://doi.org/10.1016/j.jechem.2022.01.002" @default.
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