检索结果-南通市图书馆

国家检察官学院学报 2018年第1期26卷 171-176页

作者： hu jinguang

Selective superoxide radical generation for glucose photoreforming into arabinose

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2022年第11期31卷 324-331,I0009页

作者： Jiu Wang Heng Zhao Peng Liu Nael Yasri Na Zhong Md Golam Kibria jinguang hu Department of Chemical and Petroleum Engineering University of CalgaryCalgaryAlberta T2N 1N4Canada School of Materials Science and Engineering Kunming University of Science and TechnologyKunming 650093YunnanChina

Biomass photorefinery to produce fuels and valuable chemicals is a promising approach to alleviating the energy crisis and achieving carbon ***,precisely modulating the photocatalytic conversion of biomass into value-added chemicals is still *** we demonstrate a feasible strategy to selectively produce arabinose via oriented glucose oxidation to gluconic acid,followed by the decarboxylation process for C1-C2 bond *** realize this process,gold nanoparticles(Au NPs)modified carbon nitride(AuCN)is rationally designed to regulate the electron transfer behavior of pristine carbon nitride from a two-electron pathway to a single-electron *** allows selective production of superoxide(·O_(2)^(-))from oxygen reduction reaction which triggers glucose oxidation into gluconic *** addition,the arabinose production is synergistically promoted by the improved charge separation efficiency and extended visible-light absorption via localized surface plasmon resonance(LSPR)of Au *** work demonstrates an example of a mechanism-guided catalyst design to improve biofuels/chemicals production from biomass photorefinery.

关键词： Biomass photorefinery Selective glucose photoreforming Carbon nitride LSPR Oxygen reduction reaction(ORR)

Carbon quantum dots modified TiO_(2) composites for hydrogen production and selective glucose photoreforming

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2022年第1期31卷 201-208,I0006页

作者： Heng Zhao Xinti Yu Chao-Fan Li Wenbei Yu Aiguo Wang Zhi-Yi hu Steve Larter Yu Li Md Golam Kibria jinguang hu Department of Chemical and Petroleum Engineering University of Calgary2500 University DriveNWCalgaryAlberta T2N 1N4Canada State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070HubeiChina Nanostructure Research Centre Wuhan University of Technology.Wuhan 430070Hubei.China Department of Geosciences University of Calgary2500 University DriveNWCalgaryAlberta T2N 1N4Canada

Lignocellulosic biomass photoreforming is a promising and alternative strategy for both sustainable H_(2) production and biomass valorization with infinite solar ***,harsh reaction conditions(high alkalinity or toxic organic solvents),with low biomass conversion and selectivity are often reported in *** this work,we report glucose photoreforming for coproduction of H_(2) and arabinose with improved selectivity under neutral condition using carbon quantum dots(CQDs)modified TiO_(2) *** show that the conventional CQDs fabricated by a facile one-step hydrothermal process could be endowed with novel color changing property,due to the particle aggregation under the regulation of incident *** as-fabricated CQDs/TiO_(2) composites with certain colored CQDs could greatly improve glucose to arabinose conversion selectivity(-75%)together with efficient hydrogen evolution(up to 2.43 mmolh^(-1)g^(-1))in *** arabinose is produced via the direct C1-C2 α-scissions mechanism with reactive oxygen species of·O_(2)^(-) and·OH,as evidenced by ^(13)C labeled glucose and the electron spin-resonance(ESR)studies,*** work not only sheds new lights on CQDs assisted photobiorefinery for biomass valorization and H_(2) coproduction,but also opens the door for rationale design of different colored CQDs and their potential applications for solar energy utilization in the noble-metal-free system.

关键词： CQDs Size regulation Hydrogen production Glucose photoreforming Arabinose

Advanced oxidation via the synergy of C-defective/C-O band modified ultrathin porous g-C_(3)N_(4)and PMS for efficient photothermal degradation of bisphenol pollutants and lignin derivatives

在线全文

学校读者我要写书评

暂无评论

Green Energy & Environment 2024年第7期9卷 1159-1170页

作者： Liquan Jing Meng Xie Yuanguo Xu Chun Tong Xia Du Heng Zhao Na Zhong huaming Li jinguang hu School of Chemistry and Chemical Engineering Jiangsu UniversityZhenjiang212013China Department of Chemical and Petroleum Engineering University of Calgary2500 University DriveNWCalgaryAlbertaT2N1N4Canada School of Pharmacy Jiangsu UniversityZhenjiang212013China School of Material Science&Chemical Engineering Harbin University of Science and TechnologyHarbin150080China Institute for Energy Research Jiangsu UniversityZhenjiang212013China

This work uses thermal polymerization of urea nitrate,oxyacetic acid and urea as the raw material to prepare ultra-thin porous carbon nitride with carbon defects and C-O band(OA-UN-CN).Density functional theory(DFT)calculations showed OA-UN-CN had narrower band gap,faster electron transport and a new internal construction electric ***,the prepared OA-UN-CN significantly enhanced photocatalytic activation of peroxymonosulfate(PMS)due to enhanced light absorption performance and faster electron *** the result,the OA-UN-CN/PMS could entirely degrade bisphenol A(BPA)within 30 min,where the photodegradation rate was 81.8 and 7.9 times higher than that of g-C_(3)N_(4)and OA-UN-CN,***,the OA-UN-CN/PMS could likewise degrade other bisphenol pollutants and sodium lignosulfonate *** suggested possible photocatalytic degradation pathways accordingly and explored the toxicity of its degradation *** work provides a new idea on the development of advanced photocatalytic oxidation processes for the treatment of bisphenol pollutants and lignin derivatives,via a metal-free photothermal-catalyst.

关键词： Photothermal-catalytic G-C_(3)N_(4) Peroxymonosulfate Bisphenol Sodium lignosulfonate

CONSTITUTIONAL CONVENTIONS IN CHINA

在线全文

学校读者我要写书评

暂无评论

Frontiers of Law in China-Selected Publications from Chinese Universities 2014年第1期9卷 96-107页

作者： hu jinguang Professor at Renmin University of China Law School Ph. D.

Chinese scholars have carried out studies on constitutional conventions from three perspectives. The first perspective is to study in general terrr~, that is, to touch upon this theme while studying the principles and basic theories of the Constitution. The second perspective is to study while researching comparative constitutions, especially the British Constitution. The third perspective is connected with studies on constitutional resources in China. Until now there is no monograph dedicated to this theme; it is mostly seen in academic papers, textbooks and works on basic theories. Traditional studies tend to be confined to e：,~emplifying constitutional conventions and approaching this theme from a mainly static perspective that emphasizes their form of expression of an unwritten Constitution and the complementary parts of a written Constitution. Relatively, studies on the manifestations, normative characteristics, origins and evolutionary rules, as well as those on the legal and social functions of constitutional conventions are weaker. This causes a lack of explanatory power with regard to all kinds of emerging constitutional conventions in the constitutional practice of different states. In recent years this picture has changed to some extent. Chinese scholars have begun to concentrate on the origins and evolutionary rules of constitutional conventions, trying to understand accurately its legal non＇nativity and political modesty, in order to get the essence of constitutional conventions. Main areas of study in this respect will be discussed below.

关键词：

Dual-functional marigold-like Zn_(x)Cd_(1-x)S homojunction for selective glucose photoreforming with remarkable H_(2)coproduction

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2023年第4期79卷 158-167页

作者： Fuyan Kang Cai Shi Yeling Zhu Malin Eqi Junming Shi Min Teng Zhanhua huang Chuanling Si Feng Jiang jinguang hu Key Laboratory of Bio-based Material Science and Technology Ministry of EducationMaterial Science and Engineering CollegeNortheast Forestry UniversityHarbin 150040HeilongjiangChina Tianjin Key Laboratory of Pulp and Paper College of Light Industry and EngineeringTianjin University of Science and TechnologyTianjin 300457China Sustainable Functional Biomaterials Lab Department of Wood ScienceUniversity of British Columbia2424 Main MallVancouver V6T 1Z4Canada Department of Chemical and Petroleum Engineering University of Calgary2500 University DriveNWCalgaryAlberta T2N 1N4Canada

The global commitment to pivoting to sustainable energy and products calls for technology development to utilize solar energy for hydrogen(H_(2))and value-added chemicals production by biomass ***,a novel dual-functional marigold-like Zn_(x)Cd_(1-x)S homojunction has been the production of lactic acid with high-yield and H_(2)with high-efficiency by selective glucose *** optimized Zn_(0.3)Cd_(0.7)S exhibits outstanding H_(2)generation(13.64 mmol h^(-1)g^(-1)),glucose conversion(96.40%),and lactic acid yield(76.80%),over 272.80 and 19.21 times higher than that of bare ZnS(0.05 mmol h^(-1)g^(-1))and CdS(0.71 mmol h^(-1)g^(-1))in H_(2)generation,*** marigold-like morphology provides abundant active sites and sufficient substrates accessibility for the photocatalyst,while the specific role of the homojunction formed by hexagonal wurtzite(WZ)and cubic zinc blende(ZB)in photoreforming biomass has been demonstrated by density functional theory(DFT)*** is converted to lactic acid on the WZ surface of Zn_(0.3)Cd_(0.7)S via the photoactive species·O_(2)^(-),while the H_(2)is evolved from protons(H^(+))in H_(2)O on the ZB surface of Zn_(0.3)Cd_(0.7)*** work paves a promising road for the production of sustainable energy and products by integrating photocatalysis and biorefine.

关键词： Zn_(x)Cd_(1-x)S homojunction Selective glucose photoreforming Biomass valorization Sustainable H_(2) Photoreforming mechanism

水热亚硫酸预处理菊芋秸秆的高浓底物酶水解试验

在线全文

学校读者我要写书评

暂无评论

农业机械学报 2014年第3期45卷 168-173页

作者：沈飞王卿李阳李秀金 hu jinguang 四川农业大学资源环境学院成都611130 北京化工大学化学工程学院北京100029 不列颠哥伦比亚大学林学院温哥华V6T124

为了有效改善菊芋秸秆用于乙醇转化过程中的酶水解糖化性能，对经水热H2SO3预处理的秸秆进行高浓底物酶水解试验，研究了适合的预处理条件及其底物质量分数提高潜力以及酶使用量缩减潜力。结果显示：在180℃条件下，添加2．0％的H2SO3... 详细信息

为了有效改善菊芋秸秆用于乙醇转化过程中的酶水解糖化性能，对经水热H2SO3预处理的秸秆进行高浓底物酶水解试验，研究了适合的预处理条件及其底物质量分数提高潜力以及酶使用量缩减潜力。结果显示：在180℃条件下，添加2．0％的H2SO3进行水热预处理后的菊芋秸秆，其组分中的半纤维素可被完全去除。并且在底物质量分数为2．0％、纤维素酶和纤维二糖酶使用量分别为20FPU／g和40CBU／g条件下，获得90．0％的最大酶水解率。在此条件下预处理后的菊芋秸秆，酶水解的底物质量分数可提高的潜力为12％。在此底物质量分数下进行酶水解，纤维素酶使用量可缩减为15FPU／g，纤维二糖酶使用量可缩减至20CBU／g。在此酶使用量条件下，虽然纤维素酶和纤维二糖酶分别减少了25％和50％，酶水解率仍可达88．3％。相比最大水解率，仅降低1．8％。

关键词：菊芋茎秆 H2SO3催化水热预处理高浓底物酶水解

Super-anti-freezing,tough and adhesive titanium carbide and L-ornithine-enhanced hydrogels

在线全文

学校读者我要写书评

暂无评论

Journal of Bioresources and Bioproducts 2023年第2期8卷 136-145页

作者： Zhangkang Li Jamie LeBlanc Hitendra Kumar Hongguang Zhang Weijun Yang Xiao He Qingye Lu Jeffrey Van humbeck Keekyoung Kim jinguang hu Department of Biomedical Engineering University of CalgaryCalgaryUniversity Drive NWCalgaryAB T2N 1N4Canada Department of Chemistry University of CalgaryUniversity Drive NWCalgary T2N 1N4AlbertaCanada Department of Mechanical and Manufacturing Engineering University of CalgaryUniversity Drive NWCalgary T2N 1N4AlbertaCanada Pathology and Laboratory Medicine Cumming School of EngineeringUniversity of CalgaryHospital Drive NWT2N 4N1AlbertaCanada Department of Chemical and Petroleum Engineering University of CalgaryUniversity Drive NWCalgary T2N 1N4AlbertaCanada Key Laboratory of Synthetic and Biological Colloids Ministry of EducationSchool of Chemical and Material EngineeringJiangnan UniversityWuxiJiangsu214122China

Hydrogels are highly porous three-dimensional crosslinked polymer networks consisting of hy-drophilic polymers,employed most practically in medicine and industry,often as *** hydrogels suffer limitations in their mechanical properties,such as tensile and com-pression,and freeze at sub-zero temperatures,which compromise their ability as useful *** this study,the incorporation of L-ornithine-based zwitterionic monomer(OZM),titanium carbide(MXene),and glycerol within polyacrylamide hydrogels was used to prepare a novel polyacrylamide/polyL-ornithine-based zwitterion/MXene(PAM/Porn/MXene)hydrogel to im-prove the mechanical,adhesion,and anti-freezing properties of pure polyacrylamide *** study also analyzed the mechanical strength(tensile and compression),adhesion,and anti-freezing properties of a novel PAM/Porn/MXene hydrogel at 1%,4%,and 10%MXene concen-trations to establish to what extent the conductive MXene material enhanced these properties and concluded that the tensile and compressive properties improved linearly with the increase in the concentrations of MXene,adhesion decreased with the increased MXene concentrations,and syn-ergistic interaction between MXene and OZM significantly improved the anti-freezing properties up to-80°C.

关键词： Super-anti-freezing Tough Adhesive L-ornithine MXene

Will biomass be used for bioenergy or transportation biofuels? What drivers will influence biomass allocation

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Agricultural Science and Engineering 2017年第4期4卷 473-481页

作者： jinguang hu William James CADHAM Susan van DYK Jack N.SADDLER Department of Wood Science Faculty of Forestry The University of British Columbia

Potential competition for biomass for current and future bioenergy/biofuel uses in Brazil, Denmark,Sweden and the USA were compared. In each of these countries, bioenergy and biofuels are already important in their energy mix. However, there is limited competition for biomass between bioenergy(heat/power/residential/industrial) and transportation biofuel applications. This situation is likely to continue until advanced biofuel technology becomes much more commercially established. In each of these countries, biomass is predominantly used to produce bioenergy, even in those regions where biofuels are significant component of their transportation sector(Brazil,Sweden and USA). The vast majority of biofuel production continues to be based on sugar, starch and oil rich feedstocks, while bioenergyis produced almost exclusively from forest biomass with agricultural biomass having a small, but increasing, secondary role. Current and proposed commercial scale biomass-to-ethanol facilities almost exclusively use agriculture derived residues(corn stover/wheat straw/sugarcane bagasse). Competition for biomass feedstocks for bioenergy/biofuel applications, is most likely to occur for agricultural biomass with coproduct lignin and other residues used to concomitantly produce heat and electricity on site at biofuel production facilities.

关键词： bioenergy biofuel biomass renewable energy policy

浓H3PO4联合H2O2预处理能源植物地肤的性能研究

在线全文

学校读者我要写书评

暂无评论

太阳能学报 2020年第7期41卷 9-16页

作者：郑循雯彭天娇邱婧雯沈飞 jinguang hu 四川农业大学环境学院成都611130 四川农业大学生态环境研究所成都611130 Department of Wood Science University of British ColumbiaVancouver V6T 1Z4BCCanada

采用H3PO4联合H2O2(简称PHP)预处理地肤,基于木质素、半纤维素去除率、纤维素回收率、酶水解率等,研究温度、时间、H3PO4与H2O2浓度配比对预处理效果的影响。结果表明:提升预处理温度、时间和H3PO4浓度配比对半纤维素和木质素去除率有... 详细信息

采用H3PO4联合H2O2(简称PHP)预处理地肤,基于木质素、半纤维素去除率、纤维素回收率、酶水解率等,研究温度、时间、H3PO4与H2O2浓度配比对预处理效果的影响。结果表明:提升预处理温度、时间和H3PO4浓度配比对半纤维素和木质素去除率有明显的促进作用,半纤维素和木质素去除率最大可达100.0%和90.7%,但也会加剧纤维素的损失。过高的H3PO4浓度配比(≥70%)不利于半纤维素和木质素去除。除10℃外,其他条件下,酶水解率差异不显著(>90%),但过高强度会导致一定程度的水解速率下降。

关键词：生物质解构脱木质素酶水解脱半纤维素能源植物