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摘要:
Ammonia (NH3),as one of the most necessary chemical materials,is mainly produced via the Haber-Bosch process from hydrogen (H2) and nitrogen (N2),which requires harsh synthesis conditions and aggravates energy consumption and greenhouse effect [1].As an alternative,electrocatalytic N2 reduction to NH3 has evolved for years.However,most of electrocatalysts are confined to poor NH3 synthesis effi-ciency restricted by the strong N≡N triple bonds,the com-petition of hydrogen evolution reaction (HER),and limited N2 solubility in H2O [2].In the exploration for an alternative nitrogen source except N2 to synthesize NH3,the nitrate anion (NO3-) brings about extensive attention because the dissociation energy of N=O bonds (204 kJ mol- 1) is lower than N≡N triple bonds [3],and the enrichment of NO3- in water resources causes the environmental pollution and further infringes the human health [4].Thus,selective con-version from NO3-to NH3 through the eight-electron re-duction,if proceeding under ambient conditions in the H2O-based system,may offer a green technology for the NH3 manufacture and simultaneously alleviate the energy and pollution problems.
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篇名 Efficient nitrate-to-ammonia transformation through a direct eight-electron reduction
来源期刊 中国科学:化学(英文版) 学科
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年,卷(期) 2020,(12) 所属期刊栏目 HIGHLIGHTS
研究方向 页码范围 1737-1739
页数 3页 分类号
字数 语种 英文
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中国科学:化学(英文版)
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1674-7291
11-5839/O6
16开
北京东黄城根北街16号
1950
eng
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