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| 1 | Reactivities of d^0 transition metal complexes toward oxygen:Synthetic and mechanistic studies显示文摘Transition metals such as Fe in porphyrin complexes are known to bind or react with O2,and such reactions are critical to many biological functions and catalytic oxidation using O2.The transition metals in these reactions often contain valence d electrons,and oxidation of metals is an important step.In recent years,reactions of O2 with d0 transition metal complexes such as Hf(NR2)4(R=alkyl) have been used to make metal oxide thin films as insulating gate materials in new microelectronic devices.This feature article discusses our recent studies of such reactions and the formation of TiO2 thin films.In contrast to the reactions of many dn complexes where metals are often oxidized,reactions of d0 complexes such as Hf(NMe2)4 and Ta(NMe2)4(SiR3) with O2 usually lead to the oxidation of ligands,forming,e.g.,-ONMe2 and -OSiR3 from-NMe2 and-SiR3 ligands,respectively.Mechanistic and theoretical studies of these reactions have revealed pathways in the formation of the metal oxide thin films as microelectronic materials. | CHEN ShuJian ZHANG XinHao LIN ZhenYang WU YunDong XUE ZiLing | 2009 | Science China Chemistry2009，52，11： | 2 |
| 2 | In operando-formed interface between silver and perovskite oxide for efficient electroreduction of carbon dioxide to carbon monoxide显示文摘Electrochemical carbon dioxide(CO_(2))reduction(ECR)is a promising technology to produce valuable fuels and feedstocks from CO_(2).Despite large efforts to develop ECR catalysts,the investigation of the catalytic performance and electrochemical behavior of complex metal oxides,especially perovskite oxides,is rarely reported.Here,the inorganic perovskite oxide Ag-doped(La_(0.8)Sr_(0.2))_(0.95)Ag_(0.05)MnO_(3-δ)(LSA0.05M)is reported as an efficient electrocatalyst for ECR to CO for the first time,which exhibits a Faradaic efficiency(FE)of 84.3%,a remarkable mass activity of 75Ag^(-1)(normalized to the mass of Ag),and stability of 130 h at a moderate overpotential of 0.79 V.The LSA0.05M catalyst experiences structure reconstruction during ECR,creating the in operando-formed interface between the perovskite and the evolved Ag phase.The evolved Ag is uniformly distributed with a small particle size on the perovskite surface.Theoretical calculations indicate the reconstruction of LSA0.05M during ECR and reveal that the perovskite-Ag interface provides adsorption sites for CO_(2) and accelerates the desorption of the*CO intermediate to enhance ECR.This study presents a novel high-performance perovskite catalyst for ECR andmay inspire the future design of electrocatalysts via the in operando formation of metal-metal oxide interfaces. | Xinhao Wu Yanan Guo Yuxing Gu Fenghua Xie Mengran Li Zhiwei Hu Hong-Ji Lin Chih-Wen Pao Yu-Cheng Huang Chung-Li Dong Vanessa KPeterson Ran Ran Wei Zhou Zongping Shao | 2023 | Carbon Energy2023，5，4： | 0 |
| 3 | Photocatalytic Stille Cross-coupling on Gold/g-C3N4 Nano-heterojunction显示文摘Heterogeneous catalysts have been developed for C-C coupling reactions,but stand low activity and always proceed under harsh conditions.Photocatalytic Stille cross-coupling reaction as a green catalytic method for C-C bond formation is of great interest for a wide range of scientists but still lacks stable and highly efficient catalysts.Herein,we have designed an Au nanoparticle-graphitic carbon nitride heterojunction as an outstanding photocatalyst for artificial photosynthesis in Stille cross-coupling reaction.The interface effect between metal and semi.conductor makes electron rectify and prevents the recombination of electron-hole pairs.Moreover,the efficiency of Au nanoparticle catalysts could be adjusted by gold contents.Thus the turnover frequency(TOF)value reached the highest level of 788 h l over the optimal heterojunction catalyst.Most importantly,the C-C bond formation reaction has been proved to be carried out well under visible light irradiation,indicating the low-cost organic synthesis pro cess.Further analysis confirmed the stability and general application of our heterogeneous Au nano-heterojunctior catalyst. | YU Qiuying LIN Xiu LI Xinhao CHEN Jiesheng | 2020 | Chemical Research in Chinese Universities2020，36，6： | 0 |
| 4 | Experimental study on ice monitoring method for 10 kV transmission line with tangent tower in alpine landform显示文摘Ice monitoring methods were applied for 110 kV and above transmission lines with tangent towers.However,the change in the vertical span is not considered,and a significant difference lies in the tower-conductor structure of 10 kV transmission lines.For this reason,a proposal is made about the ice monitoring method for the 10 kV transmission line with tangent tower in alpine landform,which includes the ice monitoring system based on pressure measurement and corresponding equivalent ice thickness calculating methods.Different methods calculate the vertical span under different height difference coefficients.A finite element simulation model and a simulated ice load experiment system are established based on real conductors and insulators.Experiments and simulations under four simulated terrains are conducted within 2.5–20 mm ice thickness range.The comparison is made between this method and the method without considering the change in vertical span.The results show that the two methods are consistent and the relative errors are lower than�4%in simulation and�10%in experiment when the height difference coefficient is 0.When it is not 0,the relative errors of this method fall between t0.38%and t6.78%in simulation and−6.40%to t6.60%in experiment,while the relative errors of the method without considering the change in vertical span ranges between−11.13%and−20.23%in simulation and−11.65%to−23.20%in experiment. | Lin Yang Zhiqiang Chen Yanpeng Hao Xinhao Lin Lei Yu Yue Li Zhiyong Yuan Licheng Li | 2024 | High Voltage2024，9，1： | 0 |
| 5 | A 3D attention U-Net network and its application in geological model parameterization显示文摘To solve the problems of convolutional neural network–principal component analysis(CNN-PCA)in fine description and generalization of complex reservoir geological features,a 3D attention U-Net network was proposed not using a trained C3D video motion analysis model to extract the style of a 3D model,and applied to complement the details of geologic model lost in the dimension reduction of PCA method in this study.The 3D attention U-Net network was applied to a complex river channel sandstone reservoir to test its effects.The results show that compared with CNN-PCA method,the 3D attention U-Net network could better complement the details of geological model lost in the PCA dimension reduction,better reflect the fluid flow features in the original geologic model,and improve history matching results. | LI Xiaobo LI Xin YAN Lin ZHOU Tenghua LI Shunming WANG Jiqiang LI Xinhao | 2023 | Petroleum Exploration and Development2023，50，1： | 0 |
| 6 | Remote ether groups-directed regioselective and chemoselective cycloaddition of azides and alkynes显示文摘Remote ether groups could be used as directing groups to prepare fully substituted 5-ether-1,2,3-triazoles with exclusive 1,5-regioselectivities and excellent chemoselectivities. Ether group could coordinate with iridium catalyst by lone-pair electron at a distance(up to four σ bonds) away from alkyne to control the regioselectivity by weak coordination effect. The cycloaddition reaction chemoselectively occurred at the propargyl ether moiety of diyne to give unique fully substituted 4-alkynyl-triazole. | Xuelun Duan Nan Zheng Ming Li Xinhao Sun Zhuye Lin Pan Qiu Wangze Song | 2021 | Chinese Chemical Letters2021，32，12： | 0 |
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