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Photocatalytic Nitrobenzene Reduction and Proton Conduction Study by a Rh-As-POM Assembly System.

Wei Tang¹, Yuzhen Jin¹, Jialiang Sun¹

¹Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan 475004, P. R. China.

Inorganic Chemistry

|October 29, 2025

Summary

Researchers developed a novel Rh-containing arsenomolybdate material for efficient photocatalysis and proton conduction. This stable compound shows promise for drug intermediate synthesis and fuel cell applications.

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Published on: April 10, 2019

Area of Science:

Materials Science
Inorganic Chemistry
Catalysis

Background:

Developing stable functional materials is crucial for photocatalytic organic transformations and proton conduction.
Applications include synthesizing drug intermediates and advancing proton-exchange membrane fuel cells.

Purpose of the Study:

To synthesize and characterize a novel Rh-containing arsenomolybdate.
To evaluate its potential for photocatalysis and proton conduction.

Main Methods:

Na2MoO4, NaAsO2, and RhCl3 were used to construct the material (compound 1).
Crystallographic analysis, spectroscopic methods (XPS, PXRD, TGA, elemental analysis), and impedance spectroscopy were employed.
Photocatalytic activity was tested via photosynthetic aniline under visible light.

Main Results:

A novel symmetrical Rh-containing arsenomolybdate, Na16(H3O)4[H2N(CH3)2]2[As12Mo31O129Rh4(OH)2(H2O)]·27H2O (1), was synthesized.
Compound 1 exhibited excellent proton conductivity and structural stability under varying temperature and humidity.
High activity and robustness were observed in the photosynthetic aniline reaction.

Conclusions:

The novel Rh-containing arsenomolybdate demonstrates significant potential as a bifunctional material.
Its stability and performance make it suitable for photocatalytic applications and proton conduction.