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Supramolecular precursor derived loofah sponge-like Fe_(2)O_(x)/C for effective synergistic reaction of Fenton and photocatalysis

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Nano Research 2022年第3期15卷 1949-1958页

作者： Chen Zhao shien guo Qi Li Jianan Liu Mang Zheng Xudong Xiao Baojiang Jiang Honggang Fu Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education of the People’s Republic of ChinaSchool of Chemistry and Materials ScienceHeilongjiang UniversityHarbin 150080China State Key Laboratory of Catalysis iChEMDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China Institute of Advanced Materials(IAM) College of Chemistry and Chemical EngineeringJiangxi Normal UniversityNanchang 330022China

Fenton or photocatalytic degradations of organic contaminants are recognized as promising approaches to address the increasing environmental pollution ***,we develop the effective synergistic catalysis reaction of Fenton and photocatalysis based on a loofah sponge-like Fe_(2)O_(x)/C nanocomposite,which exhibits excellent nitrobenzene photocatalytic degradation *** is noted that Fe2O3 nanoparticles with surface Fe^(2+) species were encapsulated with an ultrathin carbon layer(denoted as Fe_(2)O_(x)/C)via a supramolecular self-sacrificing template and following thermal treatment *** experimental results indicated that the thin layer carbon coating not only inhibited the Fe iron leaching from the Fe_(2)O_(x)but also prompted the separation and transferring of electrons–hole *** introduction of Fe_(2)O_(x)/C enables the Fenton reaction to induce a rapid Fe^(2+)/Fe^(3+)cycle,and meanwhile,together with the photocatalytic reaction to produce continuous active substances for the subsequent degradation catalytic reaction without successive H2O2,resulting in the inexpensive and the effective photocatalytic *** a result,100%nitrobenzene(100 mg/L)was degraded and 97%of the organic carbon was mineralized in 90 min using the Fe_(2)O_(x)/C(0.1 g/L)at a low H_(2)O_(2) dosage(0.50 mM),under air mass(AM)1.5 *** calculations confirmed that the Fe_(2)O_(x)/C-600 with thin carbon layer promoted the dissociation of H2O2 and the·OH *** synergistic catalysis of this work may provide new ideas for low-cost and more efficient treatment of pollutants.

关键词： Fe_(2)O_(x)/C Fenton photocatalysis synergistic reaction degradation of nitrobenzene

N-doped carbon supported Pd catalysts for N-formylation of amines with CO2/H2

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Science China Chemistry 2018年第6期61卷 725-731页

作者： Xiaoying Luo Hongye Zhang Zhengang Ke Cailing Wu shien guo Yunyan Wu Bo Yu Zhimin Liu Beijing National Laboratory for Molecular Sciences Key Laboratory of Colloid Interface and Thermodynamics CAS Research/Education Center for Excellence in Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China University of Chinese Academy of Sciences Beijing 100049 China

Using mesoporous N-doped carbons(NCs)derived from glucose and melamine as the supports,a series of Pd/NC catalysts were prepared,in which Pd nanoparticles with average size<2.0 nm were uniformly distributed on the *** was indicated that the resultant Pd/NC catalysts were effective for N-formylation of amines with CO_2and H_2in ethanol without any ***,the catalyst Pd/NC-800-6.9%containing quaternary N showed the best performance,affording a series of formylamides in good or even excellent *** investigation reveals that the interaction between the Pd nanoparticles and quaternary nitrogen in the NC support was responsible for the good performance of the catalyst.

关键词： Pd/NC C–N formation N-formylation CO2 H2

A Novel Route to Synthesize N,N-Dimethyl Arylmethylamines from Aryl Aldehydes, Hexamethylenetetramine and Hydrogen

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Chinese Journal of Chemistry 2020年第8期38卷 842-846页

作者： Zhengang Ke Bo Yu Yunyan Wu Yanfei Zhao Peng Yang shien guo Zhimin Liu Beijing National Laboratory for Molecular Sciences Key Laboratory of ColloidInterface and ThermodynamicsCAS Research/Education Centre for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China Physical Science Laboratory Huairou National Comprehensive Science CenterBeijing 101407China

Developing simple and green routes to access valuable chemicals is of ***,we present a green and novel route to synthesize N,N-dimethyl arylmethylamines(DAMAs)from hexamethylenetetramine(HMTA)and aryl aldehydes in the presence of hydrogen,and a series of DAMAs can be obtained in good *** approach opens the precedent for HMTA as N,N-dimethylamine source to synthesize chemicals with N,N-dimethylamine group,which has promising applications for N-containing chemicals synthesis.

关键词： synthesis. amines synthesize

Engineering of SnO_(2)/TiO_(2) heterojunction compact interface with efficient charge transfer pathway for photocatalytic hydrogen evolution

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Chinese Chemical Letters 2023年第1期34卷 483-486页

作者： Hongli Wang Jianan Liu Xudong Xiao Huiyuan Meng Jie Wu Chuanyu guo Mang Zheng Xiaolei Wang shien guo Baojiang Jiang Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education of the People’s Republic of ChinaSchool of Chemistry and Materials ScienceHeilongjiang UniversityHarbin 150000China School of Safety Engineering Heilongjiang University of Science and TechnologyHarbin 150022China Institute of Advanced Materials(IAM) College of Chemistry and Chemical EngineeringJiangxi Normal UniversityNanchang 330022China

Fabricating an efficient charge transfer pathway at the compact interface between two kinds of semiconductors is an important strategy for designing hydrogen production heterojunction *** this work,we prepared a compact,stable and oxygen vacancy-rich photocatalyst(SnO_(2)/TiO_(2) heterostructure)via a simple and reasonable in-situ synthesis ***,SnCl_(2)–2H_(2)O is hydrolyzed on the TiO_(2) *** the pyrolysis process,SnO_(2) nanoparticles(5 nm)were dispersed on the surface of ultrathin TiO_(2) nanosheets ***,the heterojunction system can offer abundant oxygen vacancies,which can act as active sites for catalytic ***,the interfacial contact of SnO_(2)/TiO_(2) grading semiconductor oxide is uniform and tight,which can promote the separation and migration of photogenerated *** shown in the experimental results,the hydrogen production rate of SnO_(2)/TiO_(2) is 16.7 mmol h^(-1)g^(-1)(4.4 times higher than that of TiO_(2)),which is owing to its good dynamical *** work demonstrates an efficient strategy of tight combining SnO_(2)/TiO_(2) with abundant oxygen vacancies to improve catalytic efficiency.

关键词： Photocatalysis SnO_(2)-TiO_(2)heterojunction Solvent thermal Charge transfer Hydrogen evolution

Synergetic enhancement of surface reactions and charge separation over holey C_(3)N_(4)/TiO_(2)2D heterojunctions

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Science Bulletin 2021年第3期66卷 275-283,M0004页

作者： Yuting Xiao shien guo guohui Tian Baojiang Jiang Zhiyu Ren Chungui Tian Wei Li Honggang Fu Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education of the People’s Republic of ChinaHeilongjiang UniversityHarbin 150080China College of Chemistry and Chemical Engineering Jiangxi Inorganic Membrane Materials Engineering Research CentreJiangxi Normal UniversityNanchang 330022China Department of Chemistry Laboratory of Advanced MaterialsFudan UniversityShanghai 200433China

Efficient charge separation and rapid interfacial reaction kinetics are crucial factors that determine the efficiency of photocatalytic hydrogen ***,a fascinating 2D heterojunction photocatalyst with superior photocatalytic hydrogen evolution performance–holey C_(3)N_(4)nanosheets nested with TiO_(2)nanocrystals(denoted as HCN/TiO_(2))–is designed and fabricated via an in situ exfoliation and conversion *** HCN/TiO_(2)is found to exhibit an ultrathin 2D heteroarchitecture with intimate interfacial contact,highly porous structures and ultrasmall TiO_(2)nanocrystals,leading to drastically improved charge carrier separation,maximized active sites and the promotion of mass transport for ***,the HCN/TiO_(2)delivers an impressive hydrogen production rate of 282.3 lmol h^(-1)per10 mg under AM 1.5 illumination and an apparent quantum efficiency of 13.4%at a wavelength of 420 nm due to the synergetic enhancement of surface reactions and charge *** present work provides a promising strategy for developing high-performance 2D heterojunctions for clean energy applications.

关键词： Carbon nitride TiO_(2) Heterojunction Holey 2D nanomaterials Photocatalytic hydrogen evolution

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谈太原华泰医院设计

山西建筑 2018年第33期44卷 14-15页

作者：郭世恩山西省建筑设计研究院山西太原030013

介绍了太原华泰医院设计的思想基础,结合实际工作经验,从设计定位、总体规划两方面,就太原华泰医院的设计进行了详细的阐述,希望为新时代妇产专科医院的设计提供参考借鉴。

关键词：月子中心妇产医院建筑设计

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谈中国与德国建筑设计阶段的不同

山西建筑 2018年第26期44卷 11-13页

作者：郭世恩山西省建筑设计研究院山西太原030013

结合在德国事务所的经历对德国的建筑设计进行了较为全面的阐述,并对中国的建筑设计进行了分析,对造成两个国家的建筑设计方面的不同进行了详细深入的分析,借此促进我国的建筑设计向世界近代建筑潮流看齐。

关键词：德国建筑中国建筑建筑设计

北山地区白云山花岗闪长岩岩石地球化学、年代学特征及其地质意义

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矿物岩石 2020年第3期40卷 53-66页

作者：赵泽南杨建坤魏民王占立郭士恩河北省区域地质调查院河北廊坊065000

花岗闪长岩位于白云山蛇绿岩带北侧,公婆泉岛弧带南部,由细粒花岗闪长岩和中粒花岗闪长岩组成。细粒花岗闪长岩和中粒花岗闪长岩均具有具高Si(63.46%~67.68%,65.5%~66.98%)、低Al(14.27%~15.52%,15.72%~16.42%)特征,为亚碱性系列岩石,... 详细信息

花岗闪长岩位于白云山蛇绿岩带北侧,公婆泉岛弧带南部,由细粒花岗闪长岩和中粒花岗闪长岩组成。细粒花岗闪长岩和中粒花岗闪长岩均具有具高Si(63.46%~67.68%,65.5%~66.98%)、低Al(14.27%~15.52%,15.72%~16.42%)特征,为亚碱性系列岩石,稀土含量较低(105.40~116.59×10^-6,114.21~132.69×10^-6),配分曲线具右倾特征,轻、重稀土分异程度略高(LREE/HREE为9.38~10.42,9.90~12.81),HREE分布较为平坦,岩石具Nb,Ta负异常,为I型花岗岩,具埃达克岩特征。岩石为底侵下地壳部分熔融成因,岩浆源区残留矿物主要为角闪石和石榴石。细粒花岗闪长岩锆石U-Pb谐和年龄为363.9±0.94Ma,加权平均值为363.8±1.8Ma,形成于晚泥盆世。中粒花岗闪长岩U-Pb谐和年龄为348.7±1.0Ma,加权平均值为348.5±2.0Ma,形成于早石炭世。细粒花岗闪长岩和中粒花岗闪长岩岩体形成于后碰撞构造环境。

关键词：花岗闪长岩地球化学年代学地质意义

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聚胺的合成及表征

广东化工 2018年第14期45卷 112-113页

作者：吴春丽郭诗恩广州安达净水材料有限公司广东广州510000

本实验以环氧氯丙烷和二甲胺为主要原料,加入交联剂乙二胺合成聚胺。研究了环氧氯丙烷与二甲胺的摩尔比、环氧氯丙烷与乙二胺的摩尔比、反应温度及反应时间对产物的影响。采用红外光谱对产物进行结构表征,并通过絮凝实验验证产物的混凝... 详细信息

本实验以环氧氯丙烷和二甲胺为主要原料,加入交联剂乙二胺合成聚胺。研究了环氧氯丙烷与二甲胺的摩尔比、环氧氯丙烷与乙二胺的摩尔比、反应温度及反应时间对产物的影响。采用红外光谱对产物进行结构表征,并通过絮凝实验验证产物的混凝性能。

关键词：聚胺表征絮凝混凝