Two New Armtype Polyoxometalates Grafted on Titanium Dioxide Films: Towards Enhanced Photoelectrochemical Performance.
Two new carboxyethyltin-functionalized polyoxometalates (POMs) were successfully obtained and confirmed with physicochemical and spectroscopic methods including X-ray crystallography. The lowest unoccupied molecular orbitals of both compounds are higher in energy than that of TiO2 , and the optical band gaps of these compounds are smaller than that of TiO2 . Grafting them onto a TiO2 film created two kinds of novel photoanode materials that showed significantly enhanced photovoltaic and photocurrent responses, as well as improved photoelectrooxidation activities for methanol relative to that shown by a single TiO2 film. Further, P2 W15 -Co-SnR produced the largest photocurrent by exploring the photoelectric activities of a series of carboxyethyltin POM derivatives. This work provides new insight into the photoelectrochemical functionalization of POM-based organic-inorganic hybrids.
School of Chemistry and Chemical Engineering, Liaoning Normal University, Huanghe Road, No.850, Dalian, Liaoning, China.
Hang
H
Sun
School of Chemistry and Chemical Engineering, Liaoning Normal University, Huanghe Road, No.850, Dalian, Liaoning, China.
Li-Ying
LY
Guo
School of Chemistry and Chemical Engineering, Liaoning Normal University, Huanghe Road, No.850, Dalian, Liaoning, China.
Jian-Sheng
JS
Li
School of Chemistry and Chemical Engineering, Liaoning Normal University, Huanghe Road, No.850, Dalian, Liaoning, China.
Jian-Ping
JP
Bai
School of Chemistry and Chemical Engineering, Liaoning Normal University, Huanghe Road, No.850, Dalian, Liaoning, China.|Center of Analytical Test, Liaoning Normal University, Huanghe Road, No.850, Dalian, Liaoning, China.
Fang
F
Su
School of Chemistry and Chemical Engineering, Liaoning Normal University, Huanghe Road, No.850, Dalian, Liaoning, China. zhanglancui@lnnu.edu.cn.
Lan-Cui
0000-0001-6352-9292
LC
Zhang
School of Chemistry and Chemical Engineering, Liaoning Normal University, Huanghe Road, No.850, Dalian, Liaoning, China. sangxj923@nenu.edu.cn.|Center of Analytical Test, Liaoning Normal University, Huanghe Road, No.850, Dalian, Liaoning, China. sangxj923@nenu.edu.cn.
Xiao-Jing
XJ
Sang
School of Chemistry and Chemical Engineering, Liaoning Normal University, Huanghe Road, No.850, Dalian, Liaoning, China.
Wan-Sheng
WS
You
School of Chemistry and Chemical Engineering, Liaoning Normal University, Huanghe Road, No.850, Dalian, Liaoning, China. chemzhu@sina.com.
Zai-Ming
ZM
Zhu
D004563:Electrochemistry; D000432:Methanol / Q000737:chemistry; D008958:Models, Molecular; D008968:Molecular Conformation; D010084:Oxidation-Reduction; D055668:Photochemical Processes; D013696:Temperature; D014025:Titanium / Q000737:chemistry*; D017973:Tungsten Compounds / Q000737:chemistry*; D000099294:Polyoxometalates
D000432:Methanol; D014025:Titanium; D017973:Tungsten Compounds; C102296:polyoxometalate I; D000099294:Polyoxometalates; C009495:titanium dioxide
anchoring groups; photoelectrodes; photoelectrooxidation; polyoxometalates; titanium