In the paper, the author analyzes the dependence of economic growth upon energy with the method of GRA （gray related analysis）. Through studying statistical figures, the author finds out the problems in energy struc...In the paper, the author analyzes the dependence of economic growth upon energy with the method of GRA （gray related analysis）. Through studying statistical figures, the author finds out the problems in energy structure. Finally, putting forward some advice to optimize energy structure.展开更多
The accumulation of electrons on the surface of photocatalysts has an important impact on their energy bands and photocatalytic hydrogen evolution(PHE)process.However,how to accumulate electrons on the surface of cata...The accumulation of electrons on the surface of photocatalysts has an important impact on their energy bands and photocatalytic hydrogen evolution(PHE)process.However,how to accumulate electrons on the surface of catalysts to form electron islands remains a challenge.Herein,a super simple and green organic molecule adsorption strategy is used to construct a surface electric field on the surface of commercial TiO_(2)to optimize its energy band structure and ultimately improve the photocatalytic hydrogen evolution performance.Specifically,the green,environment-friendly polyethylene glycol(PEG)is adsorbed on the TiO_(2)surface by a simple mechanical grinding method.The experimental results show that the photocatalytic hydrogen evolution performance of TiO_(2)can be increased by 5 times after the adsorption of polyethylene glycol.The results from the experiment and theory calculations indicated that the hydroxyl group in polyethylene glycol can provide more electrons for the TiO_(2)surface.These accumulated electrons can not only cause the conduction band of TiO_(2)to bend upward,thus improving its reduction ability,but also form a local electric field on the TiO_(2)surface.The formed local electric field will cause the photogenerated electrons to be more concentrated,thus again improving the conduction band position and reduction ability of TiO_(2).In addition,the hydroxyl group in polyethylene glycol can also improve the hydrophilicity of TiO_(2)and promote the contact between TiO_(2)and water molecules,which are all conducive to improving photocatalytic hydrogen evolution.This work provides a new idea and ultra-simple strategy for the improvement of photocatalytic hydrogen production performance.展开更多
The GBA’s Outline Development Plan targets new energy development as an essential requirement going forward.OPTIMIZING the energy structure of the Guangdong-Hong Kong-Macao Greater Bay Area(GBA)and building a clean,l...The GBA’s Outline Development Plan targets new energy development as an essential requirement going forward.OPTIMIZING the energy structure of the Guangdong-Hong Kong-Macao Greater Bay Area(GBA)and building a clean,low-carbon,safe,and efficient energy supply system is a priority set in the GBA’s Outline Development Plan.展开更多
文摘In the paper, the author analyzes the dependence of economic growth upon energy with the method of GRA （gray related analysis）. Through studying statistical figures, the author finds out the problems in energy structure. Finally, putting forward some advice to optimize energy structure.
基金financially supported by the Shanghai Cooperation Organization Science and Technology Partnership Program and International Science and Technology Cooperation Program(No.2022E01059)the Natural Science Foundation of Xinjiang Autonomous Region(No.2021D01C092)+2 种基金the Opening Foundation of Key Laboratory of Xinjiang Uygur Autonomous Region(No.2020D04001)the Xinjiang Tianchi Doctoral Project(No.TCBS202018)the Xinjiang University Doctoral Research Foundation(No.BS200250).
文摘The accumulation of electrons on the surface of photocatalysts has an important impact on their energy bands and photocatalytic hydrogen evolution(PHE)process.However,how to accumulate electrons on the surface of catalysts to form electron islands remains a challenge.Herein,a super simple and green organic molecule adsorption strategy is used to construct a surface electric field on the surface of commercial TiO_(2)to optimize its energy band structure and ultimately improve the photocatalytic hydrogen evolution performance.Specifically,the green,environment-friendly polyethylene glycol(PEG)is adsorbed on the TiO_(2)surface by a simple mechanical grinding method.The experimental results show that the photocatalytic hydrogen evolution performance of TiO_(2)can be increased by 5 times after the adsorption of polyethylene glycol.The results from the experiment and theory calculations indicated that the hydroxyl group in polyethylene glycol can provide more electrons for the TiO_(2)surface.These accumulated electrons can not only cause the conduction band of TiO_(2)to bend upward,thus improving its reduction ability,but also form a local electric field on the TiO_(2)surface.The formed local electric field will cause the photogenerated electrons to be more concentrated,thus again improving the conduction band position and reduction ability of TiO_(2).In addition,the hydroxyl group in polyethylene glycol can also improve the hydrophilicity of TiO_(2)and promote the contact between TiO_(2)and water molecules,which are all conducive to improving photocatalytic hydrogen evolution.This work provides a new idea and ultra-simple strategy for the improvement of photocatalytic hydrogen production performance.
文摘The GBA’s Outline Development Plan targets new energy development as an essential requirement going forward.OPTIMIZING the energy structure of the Guangdong-Hong Kong-Macao Greater Bay Area(GBA)and building a clean,low-carbon,safe,and efficient energy supply system is a priority set in the GBA’s Outline Development Plan.
