Inorganic–organic hybrids based on Keggin-type polyoxometalate@Cu/Ag for degradation/absorption of methylene blue and electrocatalytic property

IF 3.8 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Vacuum Pub Date : 2024-11-23 DOI:10.1016/j.vacuum.2024.113875

Tai-Dan Chen , Jin-He Wang , Jiu-Yu Ji , Xun Zhou , Shaohui Zhang , Yue Tai , Kun Zhou

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引用次数: 0

Abstract

Inorganic–organic hybrid materials based on polyoxometalates (POMs) owing to their structural characteristics have potential applications in many fields including optics, electronics, and catalysis and so on. Two inorganic-organic hybrid compounds {[Cu(pyr)₂]₄(SiW₁₂O₄₀)}_n (1) and {[Ag(pyr)₂]₄(SiW₁₂O₄₀)}_n (2) (pyr = pyrazole) were synthesized by the assembly of [SiW₁₂O₄₀]^4- as the inorganic structural unit, the N-containing heterocyclic pyr as the organic ligand, and Cu⁺/Ag⁺ as the linkers under hydrothermal conditions. One dimensional (1D) chain 1 and two dimensional (2D) layer 2 were effectively confirmed through X-ray diffraction techniques and etc. Their photo-thermal equilibrium temperatures were 76.6 °C and 35.4 °C, and the superior photo-thermal performance of 1 to that of 2 may be attributed to their absorption intensities at 532 nm. Compound 1 photocatalyzed the degradation of MB, and compound 2 mainly adsorbed MB, well explaining their structure-activity relationship. In addition, both 1 and 2 have good electrocatalytic activity towards sodium nitrite.

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来源期刊

Vacuum 工程技术-材料科学：综合

CiteScore

6.80

自引率

17.50%

发文量

审稿时长

34 days

期刊介绍： Vacuum is an international rapid publications journal with a focus on short communication. All papers are peer-reviewed, with the review process for short communication geared towards very fast turnaround times. The journal also published full research papers, thematic issues and selected papers from leading conferences. A report in Vacuum should represent a major advance in an area that involves a controlled environment at pressures of one atmosphere or below. The scope of the journal includes: 1. Vacuum; original developments in vacuum pumping and instrumentation, vacuum measurement, vacuum gas dynamics, gas-surface interactions, surface treatment for UHV applications and low outgassing, vacuum melting, sintering, and vacuum metrology. Technology and solutions for large-scale facilities (e.g., particle accelerators and fusion devices). New instrumentation ( e.g., detectors and electron microscopes). 2. Plasma science; advances in PVD, CVD, plasma-assisted CVD, ion sources, deposition processes and analysis. 3. Surface science; surface engineering, surface chemistry, surface analysis, crystal growth, ion-surface interactions and etching, nanometer-scale processing, surface modification. 4. Materials science; novel functional or structural materials. Metals, ceramics, and polymers. Experiments, simulations, and modelling for understanding structure-property relationships. Thin films and coatings. Nanostructures and ion implantation.