Interfacial engineering of Cu–Fe₂O₃ nanotube arrays with built-in electric field and oxygen vacancies for boosting the electrocatalytic reduction of nitrates

Abstract

The key of electrocatalytic nitrate reduction to ammonium (ENRA) is to improve the slow mass transfer of nitrate and the effective electron transfer on the catalyst surface. Inspired by the...

Efficient Electrochemical Nitrate Reduction to Ammonia Driven by a Few Nanometer-Confined Built-In Electric Field

“…As reported, a catalyst with a built-in electric field can have enhanced intrinsic catalytic activity. 58,59 In particular, the transferred electron induced by a built-in electric field that is confined to a few nanometers will be much more localized and can be effectively used for the catalytic reaction. Herein, there is a reason to believe that the built-in electric field in Cu x S−Co 0.5 contributes to its enhanced catalytic NO 3 − RR performance relative to pure Cu x S and CoS 2 .…”

Supported nano-sized precious metal catalysts for oxidation of catalytic volatile organic compounds

“…Moreover, the unique chemical properties of supports, such as the defects in the supports also pose a great influence on the catalytic performance. 62 Therefore, rationally selecting or tailoring the properties of supports is crucial for determining the catalytic performance of supported precious metal catalysts.…”

Interfacial built-in electric-field for boosting energy conversion electrocatalysis

“…In recent years, fabricating heterostructured catalysts with strong BIEFs has been accepted as a promising approach for achieving outstanding catalytic performance due to the nature of charge redistribution and electron transfer. [78][79][80][81] Taking Liu's work 82 as a good example, they synthesized Mott-Schottky Co/Co 2 P heterojunction nanoparticles encapsulated in the shell of N,P-codoped carbon nanotubes (Fig. 8(a) and (b)).…”

“…In recent years, low-concentration nitrate in surface and ground water has been increasing as vast amounts of nitrous oxides are being emitted from fossil fuel combustion, which causes increasing damage to the environment and human lives. 81,89 Therefore, nitrate removal from water and its subsequent conversion to highly valuable products is now attracting great interest. Ammonia, as one of the primary fertilizers, is mainly synthesized via the Haber-Bosch process, which will inevitably lead to large energy consumption.…”