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Jun Fan

Bio: Jun Fan is an academic researcher from Northwest University (China). The author has contributed to research in topics: Photocatalysis & Photocatalytic water splitting. The author has an hindex of 41, co-authored 219 publications receiving 5725 citations.


Papers
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TL;DR: The results indicate that exfoliating bulk g-C3N4 to g-N4 nanosheets greatly enlarges the specific surface area and shortens the diffusion distance for photogenerated charges, which could not only promote the photocatalytic performance but also benefit the sufficient interaction with Bi2MoO6.

295 citations

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TL;DR: In this paper, the formation of 2D heterojunction between the g-C 3 N 4 and MoS 2 nanosheets was shown to promote the charge transfer and enhanced separation efficiency of photoinduced electron-hole pairs.

262 citations

Journal ArticleDOI
Chunni Tang1, Enzhou Liu1, Jun Wan1, Xiaoyun Hu1, Jun Fan1 
TL;DR: In this paper, the Co3O4/Ag3PO4 heterostructured photocatalyst exhibited further improved efficiency in photodegrading methyl blue (MB) under visible light irradiation (>400nm) using an impregnation method.
Abstract: Novel Ag3PO4 tetrapods with exposed {1 1 1} facets were synthesized via a facile precipitation method, and then Co3O4 nanoparticles were decorated on the surface of Ag3PO4 tetrapods using an impregnation method On top of the superior photocatalytic performance of highly reactive {1 1 1} facets of Ag3PO4 tetrapods, the Co3O4/Ag3PO4 heterostructured photocatalyst exhibited further improved efficiency in photodegrading methyl blue (MB) under visible light irradiation (>400 nm) In addition, the Co3O4 content and calcination temperature had significant impacts on the photocatalytic activities of the samples The highest efficiency was observed on the 20 wt% Co3O4/Ag3PO4 heterojunction calcined at 673 K The improved photocatalytic performance could be mainly attributed to accelerated electron-hole separation by p–n junctions in Co3O4/Ag3PO4 heterojunction, and the enhanced structural stabilities may be due to the protection of insoluble Co3O4 and the effect of Ag0 on the surface of Ag3PO4 Moreover, h+ played the major role in the MB decolorization

226 citations

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TL;DR: In this paper, two-dimensional FeSe2/g-C3N4 interplane heterostructures were constructed via in-situ deposition of FeSe 2 nanosheets on the g-C 3N4 surface.
Abstract: Developing and designing a robust hydrogen generation photocatalyst for water splitting remains a huge challenge for realizing highly effective conversion of solar energy into chemical fuel. Herein, two-dimensional FeSe2/g-C3N4 inter-plane heterostructures (2D/2D FeSe2/CNNS) were rationally constructed via the in-situ deposition of FeSe2 nanosheets on the g-C3N4 surface. The resulting 15% FeSe2/CNNS 2D/2D composite exhibited an optimal H2 generation rate of 1655.6 μmol∙h−1 ∙g−1 in Na2S/Na2SO3 solution, being nearly 2.65, 1.73 and 1.19 times higher than that of pristine g-C3N4, FeSe2 and corresponding 0D/2D FeSe2/CNNS nanocrystals, respectively. Such remarkably improved photocatalytic performance could be ascribed to efficient charge carrier mobility, acceleration of H2O2 decomposition via a stepwise two-electron/two-step pathway, and the formed 2D heterojunction interfacial contact between g-C3N4 and FeSe2 nanosheets. This work can provide new insight for designing atomic-level structural and interfacial 2D nanojunctions to steer charge separation and transportation in the nanocomposite.

176 citations

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TL;DR: In this article, a novel RP-MoS2/rGO nanocomposite was successfully fabricated for the first time through a facile two-step hydrothermal method.
Abstract: A novel RP-MoS2/rGO nanocomposite as low-cost, environmental sustanable, stability and high-performance photocatalyst was successfully fabricated for the first time through a facile two-step hydrothermal method. Even without a noble-metal cocatalyst, the introduction of MoS2/rGO hybrid made RP exhibit excellent photocatalytic performance, including photoreduction of Cr (VI) and photooxidation of different organic pollutants, owing to the increased number of excited electrons/holes and enhanced separation efficiency of charge carriers. Importantly, the synergy of photocatalytic reduction and oxidation, as well as photocatalysis and adsorption played an important role in enhancing photocatalytic activity and reaching a high efficiency. Besides, the chemical structure of the RP-MoS2/rGO with P–S and P O bands ensure the stability of the nanocomposite materials. Overall, the photocatalytic elimination of the Cr (VI)-Organic molecule coexistence system in this work shows promising application to treatment the reality wastewater.

164 citations


Cited by
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28 Jul 2005
TL;DR: PfPMP1)与感染红细胞、树突状组胞以及胎盘的单个或多个受体作用,在黏附及免疫逃避中起关键的作�ly.
Abstract: 抗原变异可使得多种致病微生物易于逃避宿主免疫应答。表达在感染红细胞表面的恶性疟原虫红细胞表面蛋白1(PfPMP1)与感染红细胞、内皮细胞、树突状细胞以及胎盘的单个或多个受体作用,在黏附及免疫逃避中起关键的作用。每个单倍体基因组var基因家族编码约60种成员,通过启动转录不同的var基因变异体为抗原变异提供了分子基础。

18,940 citations

Journal ArticleDOI
TL;DR: It is anticipated that this review can stimulate a new research doorway to facilitate the next generation of g-C3N4-based photocatalysts with ameliorated performances by harnessing the outstanding structural, electronic, and optical properties for the development of a sustainable future without environmental detriment.
Abstract: As a fascinating conjugated polymer, graphitic carbon nitride (g-C3N4) has become a new research hotspot and drawn broad interdisciplinary attention as a metal-free and visible-light-responsive photocatalyst in the arena of solar energy conversion and environmental remediation. This is due to its appealing electronic band structure, high physicochemical stability, and “earth-abundant” nature. This critical review summarizes a panorama of the latest progress related to the design and construction of pristine g-C3N4 and g-C3N4-based nanocomposites, including (1) nanoarchitecture design of bare g-C3N4, such as hard and soft templating approaches, supramolecular preorganization assembly, exfoliation, and template-free synthesis routes, (2) functionalization of g-C3N4 at an atomic level (elemental doping) and molecular level (copolymerization), and (3) modification of g-C3N4 with well-matched energy levels of another semiconductor or a metal as a cocatalyst to form heterojunction nanostructures. The constructi...

5,054 citations

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2,877 citations

Journal ArticleDOI
TL;DR: In this paper, the potential of hot electrons in metallic structures and its potential as an alternative to conventional electron-hole separation in semiconductor devices are discussed along with challenges in terms of the materials, architectures and fabrication methods.
Abstract: Optical generation of hot electrons in metallic structures and its potential as an alternative to conventional electron–hole separation in semiconductor devices are reviewed. The possibilities for realizing high conversion efficiencies with low fabrication costs are discussed along with challenges in terms of the materials, architectures and fabrication methods

2,237 citations

Journal ArticleDOI
TL;DR: In this paper, the fundamental mechanism of heterogeneous photocatalysis, advantages, challenges and the design considerations of g-C3N4-based photocatalysts are summarized, including their crystal structural, surface phisicochemical, stability, optical, adsorption, electrochemical, photoelectrochemical and electronic properties.

2,132 citations