Potassium ions promote electrochemical nitrogen reduction on nano-Au catalysts triggered by bifunctional boron supramolecular assembly : научное издание

Описание

Тип публикации: статья из журнала

Год издания: 2020

Идентификатор DOI: 10.1039/d0ta04580b

Аннотация: The electrochemical way of reducing nitrogen to ammonia presents green and economic advantages to dial down irreversible damage caused by the energy-intensive Haber-Bosch process. Here, we introduce an advanced catalyst CB[7]-K-2[B12H12]@Au with highly dispersed and ultrafine nano-gold. The CB[7]-K-2[B12H12]@Au electrochemically drПоказать полностьюiven ammonia yield and Faraday efficiency is as high as 41.69 mu g h(-1)mg(cat.)(-1)and 29.53% (at -0.4 Vvs.RHE), respectively, reaching the US Department of Energy (DOE) utility index of ambient ammonia production along with excellent cycle stability and tolerance that indicates a high potential of industrial practical value. Experimental results and theoretical calculations show that the key to an excellent electrochemical nitrogen reduction performance lies in the smart design of the CB[7]-K-2[B12H12]@Au catalyst combining the stable substrate anchored Au nanoparticles and K(+)ions that effectively prevent the hydrogen evolution reaction and polarize *N(2)leading to lowering of the rate determining step. This research will promote the further development of electrochemical ammonia production with low environmental impact.

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Издание

Журнал: JOURNAL OF MATERIALS CHEMISTRY A

Выпуск журнала: Vol. 8, Is. 26

Номера страниц: 13086-13094

ISSN журнала: 20507488

Место издания: CAMBRIDGE

Издатель: ROYAL SOC CHEMISTRY

Авторы

  • Zhao Xue (Wuhan Univ, Coll Chem & Mol Sci, Wuhan 430072, Peoples R China)
  • Yang Ziqiong (Wuhan Univ, Coll Chem & Mol Sci, Wuhan 430072, Peoples R China)
  • Kuklin Artem (KTH Royal Inst Technol, Sch Engn Sci Chem Biotechnol & Hlth, Div Theoret Chem & Biol, S-10691 Stockholm, Sweden; Siberian Fed Univ, Dept Sci & Innovat, 79 Svobodny Av, Krasnoyarsk 660041, Russia)
  • Baryshnikov Gleb (KTH Royal Inst Technol, Sch Engn Sci Chem Biotechnol & Hlth, Div Theoret Chem & Biol, S-10691 Stockholm, Sweden; Bohdan Khmelnytsky Natl Univ, Dept Chem & Nanomat Sci, UA-18031 Cherkassy, Ukraine)
  • Agren Hans (KTH Royal Inst Technol, Sch Engn Sci Chem Biotechnol & Hlth, Div Theoret Chem & Biol, S-10691 Stockholm, Sweden; Henan Univ, Coll Chem & Chem Engn, Kaifeng 475004, Henan, Peoples R China)
  • Wang Wenjing (Wuhan Univ Sci & Technol, Sch Chem & Chem Engn, State Key Lab Refractories & Met, Wuhan 430081, Peoples R China)
  • Zhou Xiaohai (Wuhan Univ, Coll Chem & Mol Sci, Wuhan 430072, Peoples R China; Minist Educ, Engn Res Ctr Organosilicon Cpds & Mat, Beijing 100816, Peoples R China)
  • Zhang Haibo (Wuhan Univ, Coll Chem & Mol Sci, Wuhan 430072, Peoples R China; Wuhan Univ, Natl Demonstrat Ctr Expt Chem, Wuhan 430072, Peoples R China)

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