An extremely long
ribbon-shaped polyoxometalate (POM) octamer, {Eu16Co7Se16W128O448(CIT)10(HCIT)2(NO3)4(OH)4(H2O)52} (H4CIT = citric acid), with a maximum length of ca.
6 nm has been obtained, which is the longest molecular POM reported
to date and the first Dawson-based 3d–4f-containing selenotungstate(IV).
The nanoscale octamer is built from 8 new Dawson-type Eu2W2-substituted selenotungstates {(Eu2W2O4)Se2W14O52}
bridged by 12 H4CIT ligands and 3 Co2+ ions,
giving rise to a rare giant inorganic–organic hybrid molecular
POM with more than 150 metal centers (7 CoII, 16 EuIII, 16 SeIV, and 128 WVI). Especially,
with 128 W centers and more than 800 non-H atoms, the POM octamer
also represents the largest known 3d–4f-containing polyoxotungstate.
Hybrid systems combining the molecular catalyst and semiconductors have been demonstrated to be feasible and efficient for water oxidation under visible light illumination. Herein, we present a brief review on recent developments of constructing molecule/semiconductor hybrid systems. These hybrid systems combined molecular catalysts with dye-sensitized semiconductors or visible-light-response semiconductors. This review systematically summarizes the fabrication strategies of hybrid systems in photoelectrochemical (PEC) water splitting and powdered photocatalytic water oxidation. Furthermore, we highlight the excellent water oxidation performances and stability of different hybrid systems and provide valuable guidance to design construction strategies for more robust and capable devices.[a] Dr.
An octanuclear Cu(ii) cluster [Cu8(dpk·OH)8(OAc)4](ClO4)4 was found to be an efficient homogeneous catalyst for photocatalytic water oxidation with an oxygen yield, TON and TOF of 35.6%, 178 and 3.6 s−1, respectively.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.