Hongjian Yan

ORCID: 0000-0002-5583-2555
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About
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Research Areas
  • Advanced Photocatalysis Techniques
  • Covalent Organic Framework Applications
  • Gas Sensing Nanomaterials and Sensors
  • Perovskite Materials and Applications
  • Copper-based nanomaterials and applications
  • Metal-Organic Frameworks: Synthesis and Applications
  • TiO2 Photocatalysis and Solar Cells
  • Phase Change Materials Research
  • Advanced Nanomaterials in Catalysis
  • Ferroelectric and Piezoelectric Materials
  • MXene and MAX Phase Materials
  • Electrocatalysts for Energy Conversion
  • Mercury impact and mitigation studies
  • Transition Metal Oxide Nanomaterials
  • Quantum Dots Synthesis And Properties
  • Chalcogenide Semiconductor Thin Films
  • Caching and Content Delivery
  • Solar Thermal and Photovoltaic Systems
  • Toxic Organic Pollutants Impact
  • Graphene research and applications
  • Solar-Powered Water Purification Methods
  • Industrial Gas Emission Control
  • Ga2O3 and related materials
  • Advancements in Battery Materials
  • 2D Materials and Applications

Sichuan University
2015-2024

Chengdu University
2014-2021

Southwest University of Science and Technology
2019-2021

Chinese Academy of Sciences
2003-2013

Dalian Institute of Chemical Physics
2005-2013

Dalian National Laboratory for Clean Energy
2012-2013

Ewha Womans University
2013

Beijing Polytechnic
2003

Institute of Geochemistry
2003

Beijing University of Technology
2003

This communication presents our recent results that the activity of photocatalytic H2 production can be significantly enhanced when a small amount MoS2 is loaded on CdS as cocatalyst. The MoS2/CdS catalysts show high rate evolution from re-forming lactic acid under visible light irradiation. increased by up to 36 times with only 0.2 wt % MoS2, and even higher than those photocatalysts different noble metals, such Pt, Ru, Rh, Pd, Au. junction formed between excellent activation property are...

10.1021/ja8007825 article EN Journal of the American Chemical Society 2008-05-13

10.1016/j.apcatb.2020.119174 article EN Applied Catalysis B Environment and Energy 2020-05-28

Photocatalytic H2 production on MoS2/CdS photocatalysts in the presence of different sacrificial reagents under visible light (λ > 420 nm) has been investigated. The transformation process Mo species loaded CdS, together with junctions formed between MoS2 and was clearly demonstrated X-ray photoelectron spectroscopy transmission electron microscopy. evolution optimized for catalysts. 0.2 wt % catalyst calcined at 573 K achieves highest overall activity evolution, demonstrates even higher...

10.1021/jp904350e article EN The Journal of Physical Chemistry C 2010-01-11

WS2/CdS photocatalysts with different amounts of WS2 cocatalyst are prepared by loading on CdS an impregnation–sulfidation approach. The transformation process the tungsten species loaded together junctions formed between and clearly demonstrated X-ray photoelectron spectroscopy transmission electron microscopy. Photocatalytic H2 production catalysts under visible light (λ > 420 nm) shows that plays a crucial role in production. Under optimum conditions, rate evolution can be increased up to...

10.1021/jp2006777 article EN The Journal of Physical Chemistry C 2011-05-26

g-C3N4 with worm-like pore and narrow size distribution was synthesized by using Pluronic P123 as soft-template. The porous not only possesses high BET surface area but also redshifts its absorbance edge up to 800 nm, shows photocatalytic activity even when the irradiation light λ > 700 nm.

10.1039/c2cc00001f article EN Chemical Communications 2012-01-01

Polymer composites of carbon nitride (g-C3N4) and poly(3-hexylthiophene) (P3HT) resulted in enhanced H2 production from water-containing Na2S Na2SO3 as electron donors, showing a evolution rate 300 times the yield achieved using g-C3N4.

10.1039/c1cc10250h article EN Chemical Communications 2011-01-01

Modifying g-C3N4 with covalent organic frameworks (COFs) through imine linkage results in a dramatically enhanced visible-light-driven photocatalytic hydrogen evolution, which reached 10.1 mmol g-1 h-1 when 2 wt% Pt and triethanolamine were used as co-catalyst sacrificial agent, respectively, corresponding to an apparent quantum efficiency (AQE) of 20.7% at 425 nm.

10.1039/c9cc02144b article EN Chemical Communications 2019-01-01

The poor stability and low catalytic activity of NH2-UiO-66 in basic solutions require the reactions to be conducted acidic solutions, which seriously hinders its potential photocatalytic application. Herein, we report that coated with two-dimensional covalent organic frameworks (COFs) via imine bond connection presents not only high but also adaptability solution environment. NH2-UiO-66/COF hybrid material was fabricated through Schiff base reaction...

10.1021/acsami.1c06008 article EN ACS Applied Materials & Interfaces 2021-06-18

Graphitic carbon nitride nanosheet (CNS) represents an attractive candidate for solar fuel production. However, the abundant defects in CNS lead to serious charge recombination and limit photocatalytic performance. Herein, synthesis of a CNS-covalent organic framework (CNS-COF) composite is presented first time. with significantly reduced obtained by rationally tuning thermal exfoliation conditions bulk nitride. Subsequent modification trace COF through chemical imine bonding can not only...

10.1002/smll.202001100 article EN Small 2020-04-22

Metal–organic frameworks (MOFs) and covalent organic (COFs) are widely used in photocatalysis for their high surface area, rich pore structures, multiple active sites. Although photogenerated carriers generated by MOFs or COFs migrate through respective centers under visible light, the charge recombination exists COFs. Therefore, researchers have constructed bonds between as migration channels to effectively mitigate recombination. As is well-known, an MOF-COF a signifcant semiconductor...

10.1021/acs.cgd.1c01071 article EN Crystal Growth & Design 2021-12-03

The tightly coupled heterostructure g-C<sub>3</sub>N<sub>4</sub>/Au/poly(3-hexylthiophene) (P3HT)/Pt was successfully prepared by a self-assembling method.

10.1039/c4ta04636f article EN Journal of Materials Chemistry A 2014-11-04
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