Photocatalytic splitting of water to produce hydrogen is a potential solution to alleviate environmental pollution and the energy crisis.It is shown here that H_(3)PMo_(12)O_(4)0(PMo_(12))as a co-catalyst with CdS nan...Photocatalytic splitting of water to produce hydrogen is a potential solution to alleviate environmental pollution and the energy crisis.It is shown here that H_(3)PMo_(12)O_(4)0(PMo_(12))as a co-catalyst with CdS nanosheets can form a well-designed composite photocatalyst without the aid of precious metals by microwave synthesis.A small loading of PMo_(12)(1.8%Mo)exhibits highly efficient photocatalytic perform-ance with a maximum hydrogen production of 5.7 mmol h^(−1)g^(−1),nearly six times higher than that of iso-lated CdS nanosheets.The charge transfer process in the photocatalytic system was further confirmed by XPS analysis,where PMo_(12)accelerated the separation of photogenerated carriers,shortened the charge transfer distance and substantially enhanced the photogeneration efficiency and stability of water clea-vage to hydrogen.This combination of polyoxometalates and CdS has promising applications and pro-vides a new way to develop efficient and novel photocatalysts for sustainable solar energy utilization strategies.展开更多
基金supported by the National Natural Science Foundation of China(No.92261118,92161103,22071180).
文摘Photocatalytic splitting of water to produce hydrogen is a potential solution to alleviate environmental pollution and the energy crisis.It is shown here that H_(3)PMo_(12)O_(4)0(PMo_(12))as a co-catalyst with CdS nanosheets can form a well-designed composite photocatalyst without the aid of precious metals by microwave synthesis.A small loading of PMo_(12)(1.8%Mo)exhibits highly efficient photocatalytic perform-ance with a maximum hydrogen production of 5.7 mmol h^(−1)g^(−1),nearly six times higher than that of iso-lated CdS nanosheets.The charge transfer process in the photocatalytic system was further confirmed by XPS analysis,where PMo_(12)accelerated the separation of photogenerated carriers,shortened the charge transfer distance and substantially enhanced the photogeneration efficiency and stability of water clea-vage to hydrogen.This combination of polyoxometalates and CdS has promising applications and pro-vides a new way to develop efficient and novel photocatalysts for sustainable solar energy utilization strategies.
