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Understanding Bridging Sites and Accelerating Quantum Efficiency for photocatalytic cO_(2) Reduction

nano-Micro Letters 2024年第1期16卷 68-84页

作者： Kangwang Wang Zhuofeng Hu peifeng Yu Alina M.Balu Kuan Li Longfu Li Lingyong Zeng chao Zhang Rafael Luque Kai Yan Huixia Luo School of Materials Science and Engineering State Key Laboratory of Optoelectronic Materials and TechnologiesGuangdong Provincial Key Laboratory of Magnetoelectric Physics and DevicesKey Lab of Polymer Composite and Functional MaterialsSun Yat-Sen UniversityNo.135Xingang Xi RoadGuangzhou 510275People’s Republic of China School of Environmental Science and Engineering Sun Yat-Sen UniversityNo.135Xingang Xi RoadGuangzhou 510275People’s Republic of China Departamento de Química Orgánica Universidad de CórdobaCampus Universitario de RabanalesEdificio Marie Curie(C3)14014 CórdobaSpain center for Refining and Advanced chemicals King Fahd University of Petroleum and Minerals31261 DhahranSaudi Arabia Universidad EcOTEc Km 13.5 SamborondónEC092302 SamborondónEcuador

We report a novel double-shelled nanoboxes photocatalyst architecture with tailored interfaces that accelerate quantum efficiency for photocatalytic cO_(2) reduction reaction(cO_(2)RR)via Mo–S bridging bonds sites in S_(v)–In_(2)S_(3)@2H–MoTe_(2).The X-ray absorption near-edge structure shows that the formation of S_(v)–In_(2)S_(3)@2H–MoTe_(2) adjusts the coordination environment via interface engineering and forms Mo–S polarized sites at the *** interfacial dynamics and catalytic behavior are clearly revealed by ultrafast femtosecond transient absorption,time-resolved,and in situ diffuse reflectance–Infrared Fourier transform spectroscopy.A tunable electronic structure through steric interaction of Mo–S bridging bonds induces a 1.7-fold enhancement in S_(v)–In_(2)S_(3)@2H–MoTe_(2)(5)photogenerated carrier concentration relative to pristine S_(v)–In_(2)S_(3).Benefiting from lower carrier transport activation energy,an internal quantum efficiency of 94.01%at 380 nm was used for photocatalytic cO_(2)*** study proposes a new strategy to design photocatalyst through bridging sites to adjust the selectivity of photocatalytic cO_(2)RR.

关键词： Quantum efficiency Electronic structure Steric interaction Bridging sites cO_(2)reduction

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A new Method for the cleavage of carbohydrate Benzylidene Acetal by ceric (IV) Ammonium nitrate in cH_3cn-H_2O (10: 1)

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chinese chemical Letters 1997年第10期8卷 841-842页

作者： Shou Fu LU Qin Qin OUYAnG Zhong Wu GUO Biao YU and Yong Zheng HUI(state key lab.ratory of bio-organ.c and natural products chemistry,Shanghai Institute of organ.c chemistry, Academia Sinica, Shanghai 200032) state key lab. bio-organ./nat. p.c. Shanghai Inst. of Organic Chemistry Academia Sinica Shanghai 200032 China

A new method for the cleavage of carbohydrate benzylidene acetal has been developed using ceric (YV) ammonium nitrate (cAn) [(nH4)2ce(nO3)6] in cH3cn-H2O (10/1, v/v).

关键词： cH A new Method for the cleavage of carbohydrate Benzylidene Acetal by ceric Ammonium nitrate in cH3cn-H2O cn IV

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cYcLOpEpTIDES FROM STELLARIA DELAVAYI

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chinese chemical Letters 1996年第2期7卷 149-152页

作者： Yu Rut ZHAO Jun ZHOU Xiang Kai WAnG Hou Ming WU Xiao Lin HUAnG (Department of Medicinal chemistry of natural products,School of pharmacy. West china University of Medical Sciences, chengdu 610041)(lab.ratory of phytochemistry, Kunming Institute of Botan state key lab. of Appl. organ. chem. University of Lanzhou Lanzhou 730000 China Dept. of Med. chem. of nat. products School of Pharmacy W. China Univ. of Medical Sciences Chengdu 610011 China state key lab. bio - organ./n.p.c. Shanghai Inst. of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 China

Further chemical study on Stellaria delavayi led to the isolation of two ether new cyclopeptides, namely stelladelin B and c. On the basis of spectroscopic analysis and chemical evidence, their structures were established as cyclo(Gly-Ile-pro(2)-pro(1)-Ala-Tyr-Asp-Leu) and cylo(Val-pro(3)-Tyr(2)-pro(2)-pro(1)-phe-Tyr(1)-Ser), respectively.

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Defect engineered electrocatalysts for c-n coupling reactions toward urea synthesis

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chinese chemical Letters 2024年第8期35卷 7-14页

作者： Shengkai Li Yuqin Zou chen chen Shuangyin Wang Zhao-Qing Liu Guangzhou key lab.ratory for clean Energy and Materials/key lab.ratory for Water Quality and conservation of the pearl River Delta Ministry of EducationGuangzhou UniversityGuangzhou 510006China state key lab.ratory of chemo/bio-Sensing and chemometrics College of Chemistry and Chemical EngineeringAdvanced Catalytic Engineering Research Center of the Ministry of EducationHunan UniversityChangsha 410082China

Urea is extensively used in agriculture and chemical industry,and it is produced on an industrial scale from cO_(2)and Haber-Bosch nH_(3)under relatively high temperature and high pressure conditions,which demands high energy input and generates masses of carbon *** conversion of cO_(2)and n sources(such as nO_(2)^(−),nO_(3)^(−),and n_(2))through electrocatalytic reactions under ambient conditions is a promising alternative to realize efficient urea *** note,the design of electrocatalyst is one of the key factors that can improve the efficiency and selectivity of c-n coupling *** engineer-ing is an intriguing strategy for regulating the electronic structure and charge density of electrocatalysts,which endows electrocatalysts with excellent physicochemical properties and optimized adsorption en-ergy of the reaction intermediates to reduce the kinetic *** this minireview,recent advances of defect engineered electrocatalysts in urea electrosynthesis from cO_(2)and various n reactants are firstly *** discussions of c-n coupling in these advances are presented,with the aim of directing future investigations on improving the urea ***,the prospects and challenges of de-fect engineered electrocatalysts for urea synthesis are *** overview is expected to provide in-depth understanding of structure-reactivity relationship and shed light on future electrocatalytic c-n coupling reactions.

关键词： Electrocatalysis Defective electrocatalyst co-reduction c-n coupling Urea synthesis

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crn supported by carbon nanosheets as efficient catalysts toward oxygen reduction reaction and Zn-air batteries

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Rare Metals 2024年第10期43卷 4973-4981页

作者： Ya-Ting Zhang Fan Zhang Zhe Lu Jun-Ming Luo Su-Yang Feng Qi Wang Hui chen Hao-Ming Wu Zheng-pei Miao Bin chi neng Yu cheng-Hang You Jing Li Xin-Long Tian School of chemistry and chemical Engineering School of Marine Science and EngineeringHainan Provincial Key Lab of Fine ChemistryHainan University state power Investment Group Hainan Electric Power Co.Ltd. key lab.ratory of Fuel cell Technology of Guangdong province Shenzhen Automotive Research Institute Beijing Institute of Technology state key lab.ratory of nuclear Resources and Environment East China University of Technology

Exploring non-precious efficient oxygen reduction reaction （ORR） catalysts is of great significance to fuel cells and Zn-air batteries （ZABs）.crn is a theoretically promising ORR catalyst,but its potential needs to be unlocked by proper supports that provide high conductivity and high exposure of active *** this work,we introduce a novel synthesis of carbon nanosheets-supported crn nanoparticles （crn/c） by annealing the mixture of crcl3,1,10-phenanthroline and melamine via a two-step *** prepared crn/c materials show good ORR activity and stability in acidic and alkaline *** optimal crn/c material has an ORR half-wave potential of 0.73 and 0.72 V （*** hydrogen electrode） in acidic and alkaline media,*** it retains 82% and 78% of ORR current density in acidic and alkaline media after durability tests,***,the optimal crn/c material-based self-breathing ZABs deliver a maximum power density of 168 mW·cm-2,which is one of the highest among transition metal nitrides-based ZABs It is found that the ORR activity of crn/c materials is highly related to the cr–n valence *** work highlights the good potential of crn as robust ORR catalyst and verifies its promising application in ZABs.

关键词： carbon nanosheets crn Fuel cells Oxygen reduction reaction Zn-air batteries

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A sophorose lipid from microbial conversion of oleyl alcohol

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chinese chemical Letters 1997年第5期8卷 417-418页

作者： Yi ping SHI Jiang Yun LI Zu Yi LI(state key lab.ratory of bio-organ.c and natural products chemistry. Shanghai institute of Oryanic chemistry:Academia Sinica. 354 Fenglin Lu. Shanghai 200032) state key lab. bio-organ./nat. p.c. Shanghai Inst. of Organic Chemistry Academia Sinica 354 Fenglin Lu Shanghai 200032 China

Using oleyl alcohol as carbon source for the cultivation of yeast Torulopsis sp.. a modified sophorose lipid was isolated as the major product. This product was characterized as the octadecyl derivative by H-1 nMR and FAB-MS. Hydrogenation gave an octadecyl ester: octadecyl 17-L-[(2'-o-beta-D-glucopyranosyl-beta-D-glucopyranosyl)oxy]octadecanoate 6',6'-diacetate.

关键词： HnMR

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Diverse nucleotide substitutions in rice base editing mediated by novel TadA variants

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plant communications 2024年第8期5卷 104-112页

作者： Man Yu Yongjie Kuang chenyang Wang Xuemei Wu Shaofang Li Dawei Zhang Wenxian Sun Xueping Zhou Bin Ren Huanbin Zhou state key lab.ratory for biology of plant Diseases and Insect pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193China Department of plant pathology China Agricultural UniversityBeijing 100193China Scientific Observing and Experimental Station of crop pests in Guilin Ministry of Agriculture and Rural AffairsGuilin 541399China Ministry of Education key lab.ratory for bio-Resource and Eco-Environment College of Life ScienceState Key Laboratory of Hydraulics and Mountain River EngineeringSichuan UniversityChengdu 610064China state key lab.ratory of Vegetable biobreeding National Engineering Research Center for VegetablesBeijing Vegetable Research CenterBeijing Academy of Agriculture and Forestry ScienceBeijing 100097China state key lab.ratory of Rice biology Institute of BiotechnologyZhejiang UniversityHangzhou 310058China key lab.ratory of Gene Editing Technologies(Hainan) Ministry of Agricultural and Rural AffairsSanya 572024China

cRISpR-mediated base editors have been widely used to correct defective alleles and create novel alleles by artificial evolution for the rapid genetic improvement of *** editing capabilities of base editors strictly rely on the performance of various nucleotide modification *** with the welldeveloped adenine base editors(ABEs),cytosine base editors(cBEs)and dual base editors suffer from unstable editing efficiency and patterns at different genomic loci in rice,significantly limiting their ***,we comprehensively examined the base editing activities of multiple evolved TadA8e variants in *** found that both TadA-cDd and TadA-E27R/n46L achieved more robust c-to-T editing than previously reported hyperactive hAID*D,and TadA-cDd outperformed TadA-E27R/n46L.A c-to-G base editor(cGBE)engineered with TadA-cDd and OsUnG performed highly efficient c-to-G editing in rice compared with that of *** addition,a dual base editor constructed with a single protein,TadDE,enabled simultaneous,highly efficient c-to-T and A-to-G editing in ***,our results demonstrate that TadA8e derivatives improve both cBEs and dual base editors in rice,providing a powerful way to induce diverse nucleotide substitutions for plant genome editing.

关键词： cRISpR TadA variants cytosine base editing dual base editor rice

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A Simple Urea Approach to n-Dopedα-Mo_(2)c with Enhanced Superconductivity

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chinese physics Letters 2024年第10期41卷 103-111页

作者： Longfu Li Lei Shi Lingyong Zeng Kuan Li peifeng Yu Kangwang Wang chao Zhang Rui chen Zaichen Xiang Yunwei Zhang Huixia Luo School of Materials Science and Engineering State Key Laboratory of Optoelectronic Materials and TechnologiesGuangdong Provincial Key Laboratory of Magnetoelectric Physics and DevicesKey Lab of Polymer Composite&Functional MaterialsSun Yat-Sen UniversityGuangzhou 510275China School of physics Guangdong Provincial Key Laboratory of Magnetoelectric Physics and DevicesSun Yat-Sen UniversityGuangzhou 510275China

chemical doping is a critical factor in the development of new superconductors or optimizing the superconducting transition temperature(T_(c))of the parent superconducting ***,a new simple urea approach is developed to synthesize the n-dopedα-Mo_(2)*** from the simple urea method,a broad superconducting dome is found in the Mo_(2)c1−xnx(0≤x≤0.49)compositions.X-ray diffraction results show that the structure of𝛼α-Mo_(2)c remains unchanged and there is a variation of lattice parameters with nitrogen ***,magnetic susceptibility,and heat capacity measurement results confirm that T_(c)was strongly increased from 2.68K(x=0)to 7.05K(x=0.49).First-principles calculations and our analysis indicate that increasing nitrogen doping leads to a rise in the density of states at the Fermi level and doping-induced phonon softening,which enhances electron–phonon *** results in an increase in𝑇T_(c)and a sharp rise in the upper critical *** findings provide a promising strategy for fabricating transition metal carbonitrides and provide a material platform for further study of the superconductivity of transition metal carbides.

关键词： softening doping critical

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phosphine/Benzocyclone-based neutral nickel catalysts for Ethylene polymerization and copolymerization with polar Monomers

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chinese Journal of polymer Science 2024年第2期42卷 202-212,I0007页

作者： Fei Wang Li pan Vladislav A.Tuskaev Svetlana ch.Gagieva Yue-Sheng Li Tianjin key lab.of composite&Functional Materials School of Material Science and EngineeringTianjin UniversityTianjin300072China Department of chemistry Lomonosov Moscow State UniversityRussian Federation InstitutionLeninskie Gory 1Moscow119991Russian Federation A n nesmeyanov Institute of organ.element compounds Russian Academy of SciencesVavilova st.28Moscow119991Russian Federation

The efficient copolymerization of olefin with polar monomers using nickel-based catalysts presents a longstanding challenge. In this contribution, three phosphine-benzocyclone ligands and corresponding neutral nickel catalysts(ni1: Ar = ph;ni2: Ar = 2-(c_(6)H_(5))c_(6)H_(4);ni3: Ar = 2-[2',6'-(Me O)_(2)-c_(6)H3]c_(6)H_(4)) were prepared and applied for the ethylene polymerization and copolymerization with polar monomers without any cocatalyst. The bulky substituent groups in complexes ni2 and ni3 contributed to high catalytic activities(up to 7.24×10^(6) and 9.04×10^(6)g·mol ni^(-1)·h^(-1), respectively), and produced high-molecular-weight polyethylene(Mw up to 545.7 k Da). complex ni3 exhibited high activities for ethylene polymerization at the level of 10^(6) g·mol ni^(-1)·h^(-1) across a wide range from 30 ℃ to 120 ℃, exhibiting excellent high temperature tolerance. These nickel complexes were also effectively employed in the copolymerization of ethylene with methyl acrylate, ethyl acrylate, butyl acrylate and lauryl acrylate, producing copolymers with high molecular weights(Mw up to 80.5 k Da) and high polar monomer incorporation(up to 8.2 mol%). Microstructure analyses revealed that the introduction of large sterically hindered substituents facilitated the incorporation of polar functional units into the polymer backbone. This study demonstrates the potential of these nickel-based catalysts for efficient copolymerization of olefin with polar monomers.

关键词： neutral nickel catalyst Ethylene polymerization copolymerization polar acrylate monomers

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Insight into structure evolution of carbon nitrides and its energy conversion as luminescence

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carbon Energy 2024年第2期6卷 37-60页

作者： Hao Zhang Jingwei Zhang Wenjie chen Minjia Tao Xianguang Meng Yuanjian Zhang Guifu Zuo Hebei provincial key lab.ratory of Inorgan.c nonmetallic Materials College of Materials Science and EngineeringNorth China University of Science and TechnologyTangshanHebeiChina college of clinical Medicine North China University of Science and TechnologyTangshanHebeiChina Hebei Iron and Steel lab.ratory TangshanHebeiChina Jiangsu Engineering lab.ratory of Smart carbon-Rich Materials and Device Jiangsu Province Hi-Tech Key Laboratory for Bio-Medical ResearchState Key Laboratory of BioelectronicsSchool of Chemistry and Chemical EngineeringMedical SchoolSoutheast UniversityNanjingJiangsuChina

A series of carbon nitride(cn)materials represented by graphitic carbon nitride(g-c_(3)n_(4))have been widely used in bioimaging,biosensing,and other fields in recent years due to their nontoxicity,low cost,and high luminescent quantum *** is more attractive is that the luminescent properties such as wavelength and intensity can be regulated by controlling the structure at the molecular ***,it is time to summarize the related research on cn structural evolution and make a prospect on future *** this review,we first summarize the research history and multiple structural evolution of ***,the progress of improving the luminescence performance of cn through structural evolution was ***,the relationship between cn structure evolution and energy conversion in the forms of photoluminescence,chemiluminescence,and electrochemiluminescence was ***,key challenges and opportunities such as nanoscale dispersion strategy,luminous efficiency improving methods,standardization evaluation,and macroscopic preparation of cn are highlighted.

关键词： carbon nitride chemiluminescence electrochemiluminescence energy conversion photoluminescence structural evolution

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