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| 1 | Hetero-phase MoC-Mo_(2)C nanoparticles for enhanced photocatalytic H_(2)-production activity of TiO_(2)显示文摘Hexagonal molybdenum carbide(Mo_(2)C)as an effective non-noble cocatalyst is intensively researched in the photocatalytic H_(2)-evolution field owing to its Pt-like H^(+)-adsorption ability and good conductivity.However,hexagonal Mo_(2)C-modified photocatalysts possess a limited H_(2)-evolution rate because of the weak H-desorption ability.Tofurther improve the activity,cubic MoC was introduced into Mo_(2)C toform the carbon-modified MoC-Mo_(2)C nanoparticles(MoC-Mo_(2)C@C)by a calcination method.The resultant MoC-Mo_(2)C@C(ca.5 nm)was eventually coupled with Ti0_(2)to acquire high-efficiency Ti0_(2)/MoC-Mo_(2)C@C by electrostatic self-assembly.The highest H_(2)-generation rate of Ti0_(2)/MoC-Mo_(2)C@C reached of 918μmol·h^(-1)·g^(-1)which was 91.8,2.7,and 1.5 times than that of the Ti0_(2),TiO_(2)/MoC@C,and Ti0_(2)/Mo_(2)C@C,respectively.The enhanced rate of Ti0_(2)attributes to the carbon layer as cocatalyst to transmit electrons and the hetero-phase MoC-Mo_(2)C as H_(2)-generation active sites to boost H_(2)-evolution reaction.This research offers a novel insight to design photocatalytic materials for energy applications. | Jinfeng Liu Ping Wang Jiajie Fan Huogen Yu Jiaguo Yu | 2021 | Nano Research2021，14，4： | 6 |
| 2 | Carbon-coated cubic-phase molybdenum carbide nanoparticle for enhanced photocatalytic H2-evolution performance of TiO_(2)显示文摘Conventional hexagonal dimolybdenum carbide(Mo2 C) as a good cocatalyst has been widely applied for the enhanced photocatalytic hydrogen production of various photocatalysts. Compared with the hexagonal Mo2 C, however, the investigation about cubic molybdenum carbide(Mo C) is still very limited in photocatalytic field. In this study, carbon-coated cubic molybdenum carbide(MoC@C) nanoparticle was synthesized and used as an effective cocatalyst to improve the H2-evolution efficiency of Ti O2. The cubic MoC@C can be obtained by adjusting the mass ratio of C3 N3(NH2)3 to(NH4)6 Mo7 O(24)(2:1) and controlling the calcination temperature to 800 °C. When the above cubic MoC@C nanoparticles were evenly loaded on the Ti O2 via a sonication-assisted deposition, a homogeneous composite of TiO2/MoC@C was formed due to the strong coupling interface between TiO2 and cubic MoC nanoparticles. More importantly, the highest H2-production rate of Ti O-12/MoC@C reached 504 μmol hg^(-1)(AQE=1.43%), which was 50 times as high as that of the pure TiO2. The enhanced performance of TiO2/MoC@C can be attributed to the synergistic effect of carbon layer as an electron mediator and the cubic MoC as interfacial H2-evolution active sites. This work provides a feasible guideline to develop high-efficiency Mo-based cocatalysts for potential applications in the H2-evolution field. | jinfeng Liu Ping Wang jiajie Fan Huogen Yu | 2020 | Journal of Energy Chemistry2020，29，12： | 4 |
| 3 | Highly efficient S_(2-)-adsorbed MoSx-modified TiO_(2) photocatalysts:A general grafting strategy and boosted interfacial charge transfer显示文摘Exploiting efficient and low-cost cocatalyst with a facile grafting strategy is of critical importance for significantly boosting the photocatalytic H2-evolution activity.In this study,S2^--adsorbed MoSx nanoparticle as a superior H2-evolutoin cocatalyst was successfully grafted on the TiO2 surface to greatly boost its photocatalytic activity via one-step lactic acid-induced synthesis strategy.Herein,the lactic acid can induce the homogeneous production of amorphous MoSx(a-MoSx)nanoparticles from MoS42-precursor,while the symbiotic S2^-ions can be easily and availably self-adsorbed on the a-Mo Sxsurface,resulting in the formation of S2^--adsorbed a-Mo Sxnanoparticles with a small size of 0.5-3 nm.Photocatalytic results manifested that the S2^--adsorbed Mo Sxnanoparticles could dramatically facilitate the H2-generation rate of TiO2 photocatalysts(3452μmol h^-1 g^-1,AQE=16.5%).In situ irradiated XPS in conjunction with transient-state PL and photoelectrochemical tests reveal that the improved H_(2)-generation activity can be ascribed to the synergistic effect of boosted interfacial charge transfer from TiO_(2) to S^(2-)adsorbed Mo Sx and the superior H_(2)-evolution reaction on self-adsorbed S_(2-)ions.In addition,the S^(2-)-adsorbed Mo Sx nanoparticles can also act as the general H_(2)-generation cocatalyst to obviously promote the activity of other typical host photocatalysts such as g-C_(3) N_(4) and Cd S.This work provides an innovative approach to develop high-efficiency Mo Sx-based cocatalyst with boosted interfacial charge transfer toward highly efficient photocatalytic materials. | Duoduo Gao Ranran Yuan Jiajie Fan Xuekun Hong Huogen Yu | 2020 | Journal of Materials Science & Technology2020，56，21： | 3 |
| 4 | Joint optimal sensing time and power allocation for multi-channel cognitive radio networks considering sensing-channel selection显示文摘In this paper,we consider a multi-channel cognitive radio network(CRN)where each secondary user(SU)can only choose to sense a subset of channels.We formulate a joint optimization problem of sensingchannel selection,sensing time and power allocation under the constraints of average transmit power budget and average interference power budget,which maximizes the CRN’s total throughput.We propose a greedy algorithm to solve the joint optimization problem,which has much less computational complexity.Moreover,it is shown that the search space of the greedy algorithm can be further pruned.Finally,numerical results demonstrate that the greedy algorithm has comparable performance to the exhaustive search algorithm. | YU HuoGen TANG WanBin LI ShaoQian | 2014 | Science China(Information Sciences)2014，57，4： | 2 |
| 5 | A One-Pot Approach to Hierarchically Nanoporous Titania Hollow Micrespheres with High Photocatalytic Activity显示文摘 | Yu Jiaguo Liu Wen Yu Huogen | 2008 | Crystal Growth & Design2008，8，3： | 1 |
| 6 | Template-free Hydrothermal Synthesis of CuO/Cu2O Composite Hollow Microspheres显示文摘 | Yu Huogen Yu Jiaguo Liu Shengwei | 2007 | Chemistry of Materials2007，19，： | 1 |
| 7 | Enhanced pho-toinduced super-hydrophilicity of the sol-gel derived TiO2thin films by Fe-doping显示文摘 | Yu Jiaguo Zhou Minghua Yu Huogen | 2006 | Mater Chem Phys2006，95，： | 1 |
| 8 | The Effect of Calci- nation Temperature on the Surface Microstmcture and Photo- catalytic Activity of TiO: ]lain Films Prepared by Liquid Phase Deposition显示文摘 | Yu Jiaguo Yu Huogen Cheng Bei | 2003 | J Phys Chem2003，107，13： | 1 |
| 9 | Preparation and photocatalytic activity of mesoporous anatase TiO2 nanofibers by a hydrothermal method显示文摘 | Yu Huogen Cheng Bei | 2006 | Journal of Photochemistry and Photobiology A:Chemistry2006，182，2： | 1 |
| 10 | An analytical perfor- mance model considering access strategy of an opportunistic spectrum sharing system 显示文摘 | Tang Wanbin Yu Huogen Han Yanfeng | 2012 | Concurrency and Computation: Practice and Experience2012，24，11： | 1 |
| 11 | Effects of calcinationtemperature on the microstructures and photocatalytic activity of titanate nanotubes显示文摘 | YU Jiaguo YU Huogen CHENG Bei | 2006 | Journal of Molecular Catalysis A:Chemical2006，249，： | 1 |
| 12 | Enhanced photoinduced super-hydrophilicity of the sol-gel-derived TiO2 thin films by Fe-doping 显示文摘 | Yu Jiaguo Zhou Minghua Yu Huogen | 2006 | Materials Chemistry and Physics2006，95，2： | 1 |
| 13 | Preparation and photocatalytic activity of Fe-doped mesoporous titanium dioxide nanocrystalline photocatalysts显示文摘 | Minghua Zhou Jiaguo Yu Bei Cheng Huogen Yu | 2005 | Materials Chemistry and Physics2005，，1： | 1 |
| 14 | Spontaneous formation of a tungsten trioxide sphere-in-shell superstructure by chemically induced self-transformation 显示文摘 | Yu Jiaguo Yu Huogen Guo Hongtao | 2008 | Small2008，4，1： | 1 |
| 15 | A one-pot approach to hierarchically nanoporous titania hollow microspheres with high photocatalytic activity 显示文摘 | YU Jiaguo LIU Wen YU Huogen | 2008 | Cryst Growth Des2008，8，3： | 1 |
| 16 | Effects of substrates on the composition and microstructure of TiO2 thin films prepared by the LPD method显示文摘 | Yu Huogen Yu Jiaguo Cheng Bei | 2005 | Key Engineering Materials2005，，1： | 1 |
| 17 | Preparation, characterization and photocatalytic activity of in slm Fe-doped TiO2 thin films显示文摘 | Yu Jiaguo Yu Huogen Ao C H | 2006 | Thin Solid Films2006，，496： | 1 |
| 18 | The effect of calcination temperature on the surface microstructure and photocatalytic activity of TiO2 thin films prepared by liquid phase deposition显示文摘 | Yu Jiaguo Yu Huogen Cheng Bei | 2003 | Journal of Physical Chemistry B2003，107，13： | 1 |
| 19 | Preparation and photocatalytic activity of mesoporous anatase TiO2 nanofi- bers by a hydrothermal method显示文摘 | Yu Jiaguo Yu Huogen Cheng Bei | 2006 | J Photochem Photobiol A: Chem2006，182，2： | 1 |
| 20 | Effects of calcination temperature on the microstructures and photocatalytic activity of titanate nanotubes显示文摘 | Jiaguo Yu Huogen Yu Bei Cheng C. Trapalis | 2006 | Journal of Molecular Catalysis A Chemical2006，，1： | 1 |
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