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A High‐Symmetrical 3D Pure Inorganic Photocatalyst Based on the Highest Connectivity of {AsW 12 O 40 } Heteropoly Blue and Potassium Ions
Author(s) -
Li Fengrui,
Lv Jinghua,
Yu Kai,
Zhang Maolin,
Meng Fanxue,
Wang Kunpeng,
Zhou Baibin
Publication year - 2018
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201800427
Subject(s) - chemistry , catalysis , x ray photoelectron spectroscopy , photodegradation , potassium , ion , photocatalysis , crystallography , cluster (spacecraft) , inorganic chemistry , chemical engineering , organic chemistry , computer science , engineering , programming language , biochemistry
A 3D high‐symmetrical pure inorganic material based on a Keggin‐type arsenotungstate, [{(H 2 O)⊂K 6 (H 2 O) 12 }{K 6 (AsW 3 V W 9 VI O 40 ) 2 }] ( 1 ), has been hydrothermally synthesized and fully characterized by elemental analysis, TGA, IR, UV, and XPS spectrsocopy, and single‐crystal XRD. In compound 1 , each three‐electron‐reduced {AsW 12 O 40 } polyanion cluster utilizes all of its surface oxygen atoms to connect 12 K1 and 6 K2 cations at its periphery, which can be viewed as µ 4 ‐ and µ 2 ‐bridges to further link with four and two adjacent {AsW 12 } clusters, respectively. The coordination number and modes of {AsW 12 } and K + ions together result in a high‐symmetrical 2,4,18‐connected 3D open skeleton with a new {3 24 · 4 40 · 5 4 · 4 3 · 5 4 · 4 2 · 5 4 · 4 2 · 5 4 · 4 · 5 32 · 6 33 }{3 4 · 4 2 } 3 {3} 3 topology. Compound 1 represents the first pure inorganic 3D structure based on the highest connection of Keggin arsenotungstate heteropoly blue and potassium ions. Compound 1 shows efficient photodegradation activity towards MB, MO, RhB, and AP under UV light irradiation. The life of the catalyst, kinetics, and mechanisms of the catalytic reaction have been studied in detail.