A novel strategy to prepare 2D g-C3N4 nanosheets and their photoelectrochemical properties

Miao, Hui; Zhang, Guowei; Hu, Xiaoyun; Mu, Jianglong; Han, Tongxin; Fan, Jun; Zhu, Changjun; Song, Libin; Bai, Jintao; Hou, Xun

doi:10.1016/j.jallcom.2016.08.184

Cited by 67 publications

(33 citation statements)

References 23 publications

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“…They show that the samples by plasma are almost transparent. Hence, bulk g-C 3 N 4 is also successfully exfoliated into thin g-C 3 N 4 nanosheets by DBD plasma treatment [50,51,52], which is in agreement with previous results.…”

Section: Resultssupporting

confidence: 90%

A Novel Route to Manufacture 2D Layer MoS2 and g-C3N4 by Atmospheric Plasma with Enhanced Visible-Light-Driven Photocatalysis

et al. 2019

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An atmospheric plasma treatment strategy was developed to prepare two-dimensional (2D) molybdenum disulfide (MoS2) and graphitic carbon nitride (g-C3N4) nanosheets from (NH4)2MoS4 and bulk g-C3N4, respectively. The moderate temperature of plasma is beneficial for exfoliating bulk materials to thinner nanosheets. The thicknesses of as-prepared MoS2 and g-C3N4 nanosheets are 2–3 nm and 1.2 nm, respectively. They exhibited excellent photocatalytic activity on account of the nanosheet structure, larger surface area, more flexible photophysical properties, and longer charge carrier average lifetime. Under visible light irradiation, the hydrogen production rates of MoS2 and g-C3N4 by plasma were 3.3 and 1.5 times higher than the corresponding bulk materials, respectively. And g-C3N4 by plasma exhibited 2.5 and 1.3 times degradation rates on bulk that for methyl orange and rhodamine B, respectively. The mechanism of plasma preparation was proposed on account of microstructure characterization and online mass spectroscopy, which indicated that gas etching, gas expansion, and the repulsive force of electron play the key roles in the plasma exfoliation. Plasma as an environmentally benign approach provides a general platform for fabricating ultrathin nanosheet materials with prospective applications as photocatalysts for pollutant degradation and water splitting.

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Section: Resultssupporting

confidence: 90%

A Novel Route to Manufacture 2D Layer MoS2 and g-C3N4 by Atmospheric Plasma with Enhanced Visible-Light-Driven Photocatalysis

et al. 2019

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“…Chemie increased PEC performance from 70 to 150 mAcm À2 . [85] In this study,the CN layer acted as an efficient hole extraction layer rather than as an absorber.Carbon-based nanostructures such as reduced graphene oxide (rGO), [75,120,121] carbon nanotubes (CNT), [66,122,123] and others [97] can also serve as electron conduction paths.…”

Section: Methodsmentioning

confidence: 99%

Carbon Nitride Materials for Water Splitting Photoelectrochemical Cells

et al. 2019

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Graphitic carbon nitride materials (CNs) have emerged as suitable photo- and heterogeneous- catalysts for various reactions thanks to their tunable band gap, suitable energy-band position, high stability under harsh chemical conditions, and low cost. However, the utilization of CN in photoelectrochemical (PEC) and photoelectronic devices is still at an early stage owing to the difficulties in depositing high-quality and homogenous CN layer on substrates, its wide band gap, poor charge-separation efficiency and low electronic conductivity. In this minireview, we discuss the synthetic pathways for the preparation of various structures of CN on substrates, and their underlying photophysical properties and current photoelectrochemical performance. The main challenges for CN incorporation into PEC cell are described, together with possible routes to overcome the standing limitations toward the integration of CN materials in PEC and other photoelectronic devices.

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“…In recent years, 2D nanostructures have received strong research interest because of their unique morphologies. Thus, they can be used in many fields, such as gas sensors [ 86 ], lithium-ion batteries [ 87 ], supercapacitors [ 88 ], photoelectrochemistry [ 89 ], and photocatalysts [ 90 ]. Recently there have been a certain number of publications about 2D semiconductor oxides in gas sensors [ 91 , 92 , 93 , 94 ].…”

Section: Different Morphologies Of Nanomaterials For Gas-sensing Pmentioning

confidence: 99%

The Morphologies of the Semiconductor Oxides and Their Gas-Sensing Properties

Lin

et al. 2017

Sensors

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Semiconductor oxide chemoresistive gas sensors are widely used for detecting deleterious gases due to low cost, simple preparation, rapid response and high sensitivity. The performance of gas sensor is greatly affected by the morphology of the semiconductor oxide. There are many semiconductor oxide morphologies, including zero-dimensional, one-dimensional, two-dimensional and three-dimensional ones. The semiconductor oxides with different morphologies significantly enhance the gas-sensing performance. Among the various morphologies, hollow nanostructures and core-shell nanostructures are always the focus of research in the field of gas sensors due to their distinctive structural characteristics and superior performance. Herein the morphologies of semiconductor oxides and their gas-sensing properties are reviewed. This review also proposes a potential strategy for the enhancement of gas-sensing performance in the future.

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A novel strategy to prepare 2D g-C3N4 nanosheets and their photoelectrochemical properties

Cited by 67 publications

References 23 publications

A Novel Route to Manufacture 2D Layer MoS2 and g-C3N4 by Atmospheric Plasma with Enhanced Visible-Light-Driven Photocatalysis

A Novel Route to Manufacture 2D Layer MoS2 and g-C3N4 by Atmospheric Plasma with Enhanced Visible-Light-Driven Photocatalysis

Carbon Nitride Materials for Water Splitting Photoelectrochemical Cells

The Morphologies of the Semiconductor Oxides and Their Gas-Sensing Properties

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