Journal ArticleDOI
Enhancing photoactivity for hydrogen generation by electron tunneling via flip-flop hopping over iodinated graphitic carbon nitride
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TLDR
In this paper, the significant electron tunneling over I-decorated graphitic carbon nitride (I-g-C3N4) was achieved by I3− and I5− clusters implanted.Abstract:
In this work, the significant electron tunneling over iodine-decorated graphitic carbon nitride (I-g-C3N4) was achieved by I3− and I5− clusters implanted. The flip-flop electron tunneling takes place via strong Rashba spin-orbit coupling in p orbitals of polyiodides. The electron tunneling and hopping bridged the easier transfer route between far-located carbon atoms of g-C3N4 through the polyiodides p orbitals. By taking the advantage of this tunneling, the conductivity of I-g-C3N4/Ag photocatalyst was remarkably increased and the lifetime of photogenerated charges was largely prolonged, evidenced by I–V characteristics and the photoluminescence (PL) spectra. With the help of these properties, the obtained I-g-C3N4/Ag photocatalyst presented high active for hydrogen generation under visible light irradiation and Ag NPs as active site for hydrogen formation. 104.3 μmol H2 was evolved over I-g-C3N4/Ag photocatalyst in 3 h, about three time higher than that of un-iodinated g-C3N4/Ag, and no remarkable decay of activity was observed in 900 min reaction. The highest AQE value of 7.3% was achieved at 520 nm.read more
Citations
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Atomic-Level Charge Separation Strategies in Semiconductor-Based Photocatalysts.
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Inhibition of photocorrosion of CdS via assembling with thin film TiO2 and removing formed oxygen by artificial gill for visible light overall water splitting
TL;DR: In this paper, a modified Pt-TiO2/CdS photocatalyst was applied in photocatalytic overall water splitting system to remove newly formed oxygen from catalyst surface mainly inhibiting the hydrogen and oxygen back recombination to water.
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Efficient hydrogen evolution over Sb doped SnO2 photocatalyst sensitized by Eosin Y under visible light irradiation
Liuqing Yang,Liuqing Yang,Jianfeng Huang,Li Shi,Liyun Cao,Wei Zhou,Kun Chang,Xianguang Meng,Guigao Liu,Jie Yanni,Jinhua Ye,Jinhua Ye +11 more
TL;DR: In this paper, the Eosin Y (EY)-sensitized Sb doped SnO2 system without any noble metal co-catalyst under visible light was reported.
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Inhibition of CdS photocorrosion by Al2O3 shell for highly stable photocatalytic overall water splitting under visible light irradiation
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Photocatalytic Hydrogen Peroxide Production by Anthraquinone-Augmented Polymeric Carbon Nitride
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