Crystalline phosphorus fibers: controllable synthesis and visible-light-driven photocatalytic activity

Shen, Zhurui; Hu, Zhuofeng; Wang, Wanjun; Lee, Siu‐Fung; Chan, Donald K.L.; Li, Yecheng; Gu, Ting; Yu, Jimmy C.

doi:10.1039/c4nr04250f

Cited by 91 publications

(86 citation statements)

References 38 publications

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“…In Figure D, the cross‐sectional view of Ti‐RP/ZnO by field‐emission scanning electron microscopy (FE‐SEM) exhibits an average thickness of ≈1.55 µm. As shown in Figure E,E1, high‐resolution transmission electron microscopy (HRTEM) images of the RP film display the morphology of the nanosheet, clearly showing parallel lattice fringes of (001) facets with a d‐spacing of 5.81 Å, which is consistent with typical fibrous P . Furthermore, the Raman spectra (Figure S3, Supporting Information) between 300 and 500 cm −1 of amorphous RP and Ti‐RP further confirm the successful growth of RP on Ti, as Ti‐RP exhibits the peaks of fibrous RP .…”

Section: Resultsmentioning

confidence: 99%

Light‐Activated Rapid Disinfection by Accelerated Charge Transfer in Red Phosphorus/ZnO Heterointerface

Liu²,

Liang

et al. 2019

Small Methods

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A red phosphorus (RP)/ZnO heterojunction thin film is developed to harvest solar or light emitting diode (LED) light for rapid, effective, ecofriendly, lower‐cost, and safe disinfection, which is convenient for universal and large‐scale deposition. The most stable geometrical structure of the RP/ZnO heterojunction, i.e., an RP (001) plane and a ZnO (002) plane, exhibits charge redistribution largely at the interface region. Therefore, the effective interfacial charge transfer and the improved separation efficiency of photogenerated electron–hole pairs can strongly boost reactive oxygen species (ROS)‐generation reactions to enhance photocatalytic bacterial inactivation. The excellent light‐activated point‐of use disinfection can be achieved even through LED light of phone. Additionally, the RP/ZnO heterojunction also possesses excellent solar light‐to‐heat conversion efficiency, leading to further lethality to bacteria through hyperthermia. Antibacterial efficacy of 99.96 ± 0.03% against Staphylococcus aureus at 5 min and 99.97 ± 0.02% against Escherichia coli at 4 min can be attributed to the synergetic antibacterial activity of solar photocatalysis and photothermal effect (more than 50 °C in 2 min). This platform provides a surface strategy for designing synergetic photocatalytic and photothermal materials to fully harvest solar energy for not only water disinfection but also antibacterial surfaces in medical facilities, touch screen devices, or seawater desalination.

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Section: Resultsmentioning

confidence: 99%

Light‐Activated Rapid Disinfection by Accelerated Charge Transfer in Red Phosphorus/ZnO Heterointerface

Liu²,

Liang

et al. 2019

Small Methods

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“…First‐principles density functional theory revealed that the effective masses of both electrons and holes in single‐layered Hittorf's phosphorus (HP) had a strong anisotropy along x and y directions . It was also experimentally demonstrated that single‐crystalline fibrous phosphorus grown along the long axis of fibers via chemical vapor deposition (CVD) exhibited higher photocatalytic degradation activity than amorphous RP nanoparticles . However, to date, there are rare experimental results about the effect of crystallographic orientation on the phosphorus‐based photocatalysts for water splitting, with the mechanisms of performance improvement remaining unclear.…”

Section: Introductionmentioning

confidence: 99%

A [001]‐Oriented Hittorf's Phosphorus Nanorods/Polymeric Carbon Nitride Heterostructure for Boosting Wide‐Spectrum‐Responsive Photocatalytic Hydrogen Evolution from Pure Water

Zhu

Yin

et al. 2019

Angewandte Chemie

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Red phosphorus is a promising photocatalyst with wide visible‐light absorption up to 700 nm, but the fast charge recombination limits its photocatalytic hydrogen evolution reaction (HER) activity. Now, [001]‐oriented Hittorf's phosphorus (HP) nanorods were successfully grown on polymeric carbon nitride (PCN) by a chemical vapor deposition strategy. Compared with the bare PCN and HP, the optimized PCN@HP hybrid exhibited a significantly enhanced photocatalytic activity, with HER rates reaching 33.2 and 17.5 μmol h−1 from pure water under simulated solar light and visible light irradiation, respectively. It was theoretically and experimentally indicated that the strong electronic coupling between PCN and [001]‐oriented HP nanorods gave rise to the enhanced visible light absorption and the greatly accelerated photoinduced electron–hole separation and transfer, which benefited the photocatalytic HER performance.

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“…Sodium bicarbonate (NaHCO 3 ) was supplied by Tianjin Fengchuan Chemical Co., Ltd. Commercial RP and cadmium perchlorate hexahydrate [Cd(ClO 4 ) 2 ⋅ 6 H 2 O] were acquired from Energy Chemical. Prior to use, commercial red phosphorus was first pretreated by a hydrothermal method at 200 °C for 12 h to remove oxides and impurities from its surface according to the reported method …”

Section: Methodsmentioning

confidence: 99%

Band‐Gap and Charge Transfer Engineering in Red Phosphorus‐Based Composites for Enhanced Visible‐Light‐Driven H₂ Evolution

Xuan

Quan

Shen

et al. 2020

Chemistry A European J

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It is known that the low lifetime of photogenerated carriers is the main drawback of elemental photocatalysts. Therefore, a facile and versatile one‐step strategy to simultaneously achieve the oxygen covalent functionalization of amorphous red phosphorus (RP) and in situ modification of CdCO3 is reported. This strategy endows RP with enhanced charge carrier separation ability and photocatalytic activity by coupling band‐gap engineering and heterojunction construction. The as‐prepared nCdCO3/SO‐RP (n=0.1, 0.25, 0.5, 1.0) composites exhibited excellent photocatalytic H2 evolution activity (up to 516.3 μmol g−1 h) from visible‐light‐driven water splitting (λ>400 nm), which is about 17.6 times higher than that of pristine RP. By experimental and theoretical investigations, the roles of surface oxygen covalent functionalization, that is, prolonging the lifetime of photogenerated carriers and inducing the negative shift of the conduction band potential, were studied in detail. Moreover, the charge transfer mechanism of these composites has also been proposed. In addition, these composites are stable and can be reused at least for three times without significant activity loss. This work may provide a good example of how to promote the activity of elemental photocatalysts by decorating their atomic structure.

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Crystalline phosphorus fibers: controllable synthesis and visible-light-driven photocatalytic activity

Cited by 91 publications

References 38 publications

Light‐Activated Rapid Disinfection by Accelerated Charge Transfer in Red Phosphorus/ZnO Heterointerface

Light‐Activated Rapid Disinfection by Accelerated Charge Transfer in Red Phosphorus/ZnO Heterointerface

A [001]‐Oriented Hittorf's Phosphorus Nanorods/Polymeric Carbon Nitride Heterostructure for Boosting Wide‐Spectrum‐Responsive Photocatalytic Hydrogen Evolution from Pure Water

Band‐Gap and Charge Transfer Engineering in Red Phosphorus‐Based Composites for Enhanced Visible‐Light‐Driven H₂ Evolution

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Crystalline phosphorus fibers: controllable synthesis and visible-light-driven photocatalytic activity

Cited by 91 publications

References 38 publications

Light‐Activated Rapid Disinfection by Accelerated Charge Transfer in Red Phosphorus/ZnO Heterointerface

Light‐Activated Rapid Disinfection by Accelerated Charge Transfer in Red Phosphorus/ZnO Heterointerface

A [001]‐Oriented Hittorf's Phosphorus Nanorods/Polymeric Carbon Nitride Heterostructure for Boosting Wide‐Spectrum‐Responsive Photocatalytic Hydrogen Evolution from Pure Water

Band‐Gap and Charge Transfer Engineering in Red Phosphorus‐Based Composites for Enhanced Visible‐Light‐Driven H2 Evolution

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Product

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Band‐Gap and Charge Transfer Engineering in Red Phosphorus‐Based Composites for Enhanced Visible‐Light‐Driven H₂ Evolution