Vanadium Oxo Sulfate (VOSO4) for hydrogen generation and catalytic hydrogenation

IF 2.7 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Inorganica Chimica Acta Pub Date : 2025-05-22 DOI:10.1016/j.ica.2025.122774

Hani Nasser Abdelhamid

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引用次数: 0

Abstract

This work investigated the catalytic characteristics of vanadium (IV) oxide sulfate hydrate (VOSO₄·3H₂O) for hydrogen production and the hydrogenation of organic contaminants. The crystalline structure of VOSO₄·3H₂O was characterized using various analytical methods. Structural study verified the existence of a monoclinic crystalline phase consisting of [VO(H₂O)₃]²⁺ octahedral units and SO₄²⁻ tetrahedral anions linked through hydrogen bonding. Optical investigations demonstrated a semiconducting characteristic with a 3.1–3.3 eV band gap and an intense blue color. VOSO₄·3H₂O exhibited exceptional catalytic efficacy in facilitating the hydrolysis of sodium borohydride (NaBH₄) and ammonia borane (NH₃BH₃), markedly improving hydrogen production under mild circumstances. The hydrogen generation rate (HGR) attained 2000 mL/min·g with increased NaBH₄ loading (2 wt%). Furthermore, VOSO₄·3H₂O facilitated the reduction of several nitroaromatic compounds and organic dyes, attaining over 90 % conversion efficiency in 60 min. The catalyst demonstrated remarkable recyclability across five consecutive cycles with no loss in activity. These results highlight the potential of VOSO₄·3H₂O as a recyclable and effective catalyst for hydrogen generation and environmental remediation applications, i.e., catalytic hydrogenation.

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用于制氢和催化加氢的硫酸钒（VOSO4）

研究了水合氧化硫酸钒（VOSO4·3H2O）对制氢和有机污染物加氢的催化特性。采用多种分析方法对VOSO4·3H2O的晶体结构进行了表征。结构研究证实了由[VO(H2O)3]2+八面体单元和SO42−四面体阴离子通过氢键连接组成的单斜晶相的存在。光学研究表明其具有半导体特性，带隙为3.1-3.3 eV，颜色为深蓝色。在温和条件下，VOSO4·3H2O对硼氢化钠（NaBH4）和硼烷氨（NH3BH3）的水解表现出优异的催化作用，显著提高了产氢率。随着硫酸钠负荷量（2 wt%）的增加，产氢率（HGR）达到2000 mL/min·g。此外，VOSO4·3H2O催化了几种硝基芳香族化合物和有机染料的还原，在60分钟内达到90%以上的转化效率。该催化剂在连续5次循环中表现出显著的可回收性，而活性没有损失。这些结果突出了VOSO4·3H2O作为一种可回收的有效催化剂的潜力，可用于制氢和环境修复应用，即催化加氢。

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来源期刊

Inorganica Chimica Acta 化学-无机化学与核化学

CiteScore

6.00

自引率

3.60%

发文量

440

审稿时长

35 days

期刊介绍： Inorganica Chimica Acta is an established international forum for all aspects of advanced Inorganic Chemistry. Original papers of high scientific level and interest are published in the form of Articles and Reviews. Topics covered include: • chemistry of the main group elements and the d- and f-block metals, including the synthesis, characterization and reactivity of coordination, organometallic, biomimetic, supramolecular coordination compounds, including associated computational studies; • synthesis, physico-chemical properties, applications of molecule-based nano-scaled clusters and nanomaterials designed using the principles of coordination chemistry, as well as coordination polymers (CPs), metal-organic frameworks (MOFs), metal-organic polyhedra (MPOs); • reaction mechanisms and physico-chemical investigations computational studies of metalloenzymes and their models; • applications of inorganic compounds, metallodrugs and molecule-based materials. Papers composed primarily of structural reports will typically not be considered for publication.