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Du, Jimin,Yang, Mengke,Zhang, Fangfang,Cheng, Xuechun,Wu, Haoran,Qin, Huichuang,Jian, Qingsong,Lin, Xialing,Li, Kaidi,Kang, Dae Joon Elsevier 2018 CERAMICS INTERNATIONAL Vol.44 No.3
<P><B>Abstract</B></P> <P>Photoelectrochemical (PEC) water splitting using high-performance catalysts shows considerable promise in generating environment-friendly hydrogen energy. Its practical applications, however, suffer from several shortcomings, such as low photocurrent density, large onset-voltage value, and poor durability. In this study, CuS and CdS quantum-dot-cosensitized porous TiO<SUB>2</SUB>-based PEC catalysts (CuS-CT) have been successfully synthesized via in situ sulfuration of CuO and CdO coexisting inside a porous TiO<SUB>2</SUB> monolith by a hydrothermal method. Compared to porous TiO<SUB>2</SUB>, CuS-sensitized porous TiO<SUB>2</SUB> (CuS-TiO<SUB>2</SUB>), and CdS-sensitized porous TiO<SUB>2</SUB> (CdS-TiO<SUB>2</SUB>) in terms of PEC performance, the CuS-CT photoanode exhibited a significantly high anodic photocurrent for water splitting under simulated sunlight radiation. The photocurrent produced by the optimized sample of 7% CuS-5% CdS-TiO<SUB>2</SUB> (7% CuS-CT) was nearly 2.7 times higher than that of pure porous TiO<SUB>2</SUB> at 1.0V versus a reversible hydrogen electrode (RHE). Porous TiO<SUB>2</SUB> possesses large surface areas that can drive fast electrolyte transport and afford more surface reaction active sites. On the other hand, CuS and CdS quantum dots not only broaden the visible light absorption range, but also improve photoinduced electron-hole separation efficiency. The co-sensitized multi-nanostructures photoanodes lead to a remarkable and promising application in PEC water splitting reactions.</P>
Zhao, Pusu,Jing, Wang,Jing, Long,Jian, Fangfang,Li, Yufeng Korean Chemical Society 2013 Bulletin of the Korean Chemical Society Vol.34 No.12
A tetradentate ligand of 2-phenyl-4,6-di(pyridin-2-yl)pyrimidine (L) has been synthesized and its complexes with $ZnI_2$ and CuI have been obtained by hydrothermal method. single crystal X-ray diffraction analysis indicates that ligand L coordinates with Zn(II) ions to form a simple four-coordinate di-nuclear complex, while the complexation of L with Cu(I) constructs a one-dimensional chain polymer. The existence of $I^-$ ion hampers the L to assemble grid-type complexes with Zn(II) and Cu(I). Fluorescence spectra show that the L emits blue fluorescence while its Cu(I) polymer decrease the fluorescence intensity and Zn(II) complex quenches the fluorescence.