Enhancement of the photocatalytic activity of the NiO-porous NiO homojunction derived from the in situ templated metal–organic framework
文献情報
Liying Yin, Zhongzheng Wang, Mei-Ling Xu, Fuhai Guo, Xiao Zhang, Kui Li
The design and fabrication of a homojunction with similar lattice constant, modulated configuration, and morphology is essential for the efficient separation and transport of photo-generated charge carriers. Herein, the transition metal oxide (NiO) was selected as an example for the fabrication of NiO-porous NiO homojunction. Flower-like Ni(OH)2 was adopted as a template for the fabrication of Ni(OH)2–Ni-MOF, which was then converted to NiO and porous NiO homojunction. Notably, the NiO and the porous NiO derived from Ni(OH)2 and Ni-MOF, respectively, exhibited a different band structure, and hence the homojunction was formed. Due to the enhanced separation efficiency of the photo-generated charge carriers and the more exposed active sites, the optimal NiO@PNiO homojunction exhibited an excellent photocatalytic hydrogen production of 48.67 μmol h−1 g−1, corresponding to 6.7 and 3.4 times that of NiO and porous NiO, respectively. This study provides insight into the design and flexible synthesis of the MOF-derived metal oxide, sulfide, and phosphide homojunction.
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CrystEngComm

CrystEngComm is the forum for the design and understanding of crystalline materials. We welcome studies on the investigation of molecular behaviour within crystals, control of nucleation and crystal growth, engineering of crystal structures, and construction of crystalline materials with tuneable properties and functions. We publish hypothesis-driven research into… how crystal design affects thermodynamics, phase transitional behaviours, polymorphism, morphology control, solid state reactivity (crystal-crystal solution-crystal, and gas-crystal reactions), optoelectronics, ferroelectric materials, non-linear optics, molecular and bulk magnetism, conductivity and quantum computing, catalysis, absorption and desorption, and mechanical properties. Using Techniques and methods including… Single crystal and powder X-ray, electron, and neutron diffraction, solid-state spectroscopy, spectrometry, and microscopy, modelling and data mining, and empirical, semi-empirical and ab-initio theoretical evaluations. On crystalline and solid-state materials. We particularly welcome work on MOFs, coordination polymers, nanocrystals, host-guest and multi-component molecular materials. We also accept work on peptides and liquid crystals. All papers should involve the use or development of a design or optimisation strategy. Routine structural reports or crystal morphology descriptions, even when combined with an analysis of properties or potential applications, are generally considered to be outside the scope of the journal and are unlikely to be accepted.