A 3-D Wells–Dawson phosphotungstate hybrid material modified by Na⁺ and a bi-copper organic complex linker, and its photo-/electro-catalytic properties

Jinghua LvKey Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, Harbin Normal University, Harbin, People’s Republic of China

Kai YuKey Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, Harbin Normal University, Harbin, People’s Republic of China;Key Laboratory of Photochemical Biomaterials and Energy Storage Material, Harbin Normal University, Harbin, ChinaCorrespondence[email protected]

He ZhangKey Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, Harbin Normal University, Harbin, People’s Republic of China;Key Laboratory of Photochemical Biomaterials and Energy Storage Material, Harbin Normal University, Harbin, China

Chunmei WangKey Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, Harbin Normal University, Harbin, People’s Republic of China;Key Laboratory of Photochemical Biomaterials and Energy Storage Material, Harbin Normal University, Harbin, China

Chunxiao WangKey Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, Harbin Normal University, Harbin, People’s Republic of China;Key Laboratory of Photochemical Biomaterials and Energy Storage Material, Harbin Normal University, Harbin, China

Baibin ZhouKey Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, Harbin Normal University, Harbin, People’s Republic of China;Key Laboratory of Photochemical Biomaterials and Energy Storage Material, Harbin Normal University, Harbin, ChinaCorrespondence[email protected]

Abstract

An inorganic–organic hybrid material based on Dawson polyoxometalates, [Na₂{Cu^I₂(bim)₂}₂(P₂W₁₈O₆₂)]·2H₂O (bim = biimidazole) (1), has been hydrothermally synthesized and fully characterized. In 1, each {P₂W₁₈} cluster as a hexa-node ligand connects to six adjacent Dawson clusters via six Na1 ions to generate a pure inorganic 2-D layer, further joined by bimetal–organic segments [Cu₂(bim)₂]²⁺ to form a 3-D inorganic–organic hybrid framework with channels. The structure can be simplified to 3,8-connected 3-D networks with (4³)(4¹⁸·6²⁴·8³) topology, which shows bifunctional electrocatalytic performance for oxidation of ascorbic acid (AA) and reduction of nitrite (NO₂⁻), and high-efficient degradation ability for three typical dyes under UV light irradiation.

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A 3-D Wells–Dawson phosphotungstate hybrid material modified by Na⁺ and a bi-copper organic complex linker, and its photo-/electro-catalytic properties

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A 3-D Wells–Dawson phosphotungstate hybrid material modified by Na+ and a bi-copper organic complex linker, and its photo-/electro-catalytic properties

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A 3-D Wells–Dawson phosphotungstate hybrid material modified by Na⁺ and a bi-copper organic complex linker, and its photo-/electro-catalytic properties