Co3ZnC@C Promoting the Photocatalytic Hydrogen Production of g-C3N4 and Its Mechanism
Photocatalytic hydrogen production technology is an effective way to realize the conversion of solar energy to green hydrogen energy,but its practical application is limited by its high cost and low efficiency.Here,a kind of carbon-coated Co3ZnC nanoparticle(Co3ZnC@C)was synthesized by a simple precipitation-calcination method.As a cocatalyst,Co3ZnC@C was coupled with photocatalyst g-C3N4 to construct a noble metal-free composite photocatalyst Co3ZnC@C/g-C3N4.The experimental results show that the photocatalytic hydrogen production rate of Co3ZnC@C/g-C3N4 is 109 times higher than that of g-C3N4,because Co3ZnC@C,as a co-catalyst supported on the surface of g-C3N4,can improve the charge separation efficiency and accelerate the surface hydrogen evolution reaction rate.The research broadens the application range of metal carbide materials and provides a new way for the design of advanced solar energy conversion photocatalysts.
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