绿色催化剂-碘铋酸甲铵还原硝酸盐制氨的效果。

IF 4.3 2区 化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR
Vivek Kumar Agrahari, Abhik Bhuin, Ankur Yadav, Sujoy Sarkar, Subha Sadhu, Daya Shankar Pandey
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引用次数: 0

摘要

氨(NH3)对农业和工业至关重要,但其大规模生产仍然是能源密集型的,对环境不利。在此,我们首次报道了无铅无毒六方甲基碘铋酸盐金属卤化物钙钛矿(MABI)作为硝酸盐还原绿色制氨的高效可持续电催化剂的开发。mai具有独特的结构,具有分离的BiI6八面体,由甲基铵阳离子稳定,为氮活化和氢化提供了高度可调的电子环境。实验和计算研究明确地确定了带隙为2.1 eV的互连纯六边形结构的形成。电催化硝酸还原表明,MABI具有显著的氨收率(27.53 μg mg-1 h-1),具有良好的稳定性和令人印象深刻的法拉第效率(40%)。这项工作突出了卤化物铋酸钙钛矿作为传统催化剂在环境条件下生产氨的替代品的潜力,解决了能源效率和环境可持续性的双重挑战。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Efficacy of Methylammonium Iodobismuthate: A Green Catalyst for Reduction of Nitrate to Ammonia.

Ammonia (NH3) is vital in agriculture and industry, yet its large-scale production remains energy-intensive and environmentally hostile. Herein, for the first time we report the development of lead-free nontoxic hexagonal methylammonium iodobismuthate metal halide perovskite (MABI) as a highly efficient and sustainable electrocatalyst for green ammonia production from nitrate reduction. The unique structure of MABI, featuring an isolated BiI6 octahedron stabilized by a methylammonium cation, offers a highly tunable electronic environment required for nitrogen activation and hydrogenation. The experimental and computational studies categorically established the formation of an interconnected pure hexagonal structure with a band gap of ∼2.1 eV. Electrocatalytic nitrate reduction revealed that MABI displays a remarkable ammonia yield (27.53 μg mg-1 h-1) with excellent stability and a quite impressive Faradaic efficiency (40%). This work highlights the potential of halide bismuthate perovskites as an alternative to traditional catalysts to produce ammonia in ambient conditions that address the dual challenges of energy efficiency and environmental sustainability.

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来源期刊
Inorganic Chemistry
Inorganic Chemistry 化学-无机化学与核化学
CiteScore
7.60
自引率
13.00%
发文量
1960
审稿时长
1.9 months
期刊介绍: Inorganic Chemistry publishes fundamental studies in all phases of inorganic chemistry. Coverage includes experimental and theoretical reports on quantitative studies of structure and thermodynamics, kinetics, mechanisms of inorganic reactions, bioinorganic chemistry, and relevant aspects of organometallic chemistry, solid-state phenomena, and chemical bonding theory. Emphasis is placed on the synthesis, structure, thermodynamics, reactivity, spectroscopy, and bonding properties of significant new and known compounds.
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