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Molecular confined synthesis of magnetic CoO_(x)/Co/C hybrid catalyst for photocatalytic water oxidation and CO_(2)reduction

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Chinese Chemical Letters 2023年第12期34卷 328-332页

作者： Rui li Chenchen Zhang Kejia You Bonan li Wei Bu Xiangyu Meng Baochun Ma yong Ding State Key Laboratory of Applied Organic Chemistry Key Laboratory of Advanced Catalysis of Gansu ProvinceCollege of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou730000China State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China Henan Provincial Key Laboratory of Nanocomposites and Applications Institute of Nanostructured Functional MaterialsHuanghe Science and Technology CollegeZhengzhou450006China

Photosynthesis[6CO_(2)+12H_(2)O→(CH_(2)O)+6O_(2)+6H_(2)O]in nature contains a light reaction process for oxygen evolution and a dark reaction process for carbon dioxide(CO_(2))reduction to carbohydrates,which is of great significance for the survival of living ***,for simulating photosynthesis,it is desirable to design and fabricate a bifunctional catalyst for promoting photocatalytic water oxidation and CO_(2)reduction ***,a molecular confined synthesis strategy is reasonably proposed and applied,that is the bifunctional CoO_(x)/Co/C-T(T=700,800 and 900℃)photocatalysts prepared by the pyrolysis of molecular Co-EDTA under N_(2) and air atmosphere in *** the prepared photocatalysts,the CoOx/Co/C-800 shows the best photocatalytic water oxidation activity with an oxygen yield of 51.2%.In addition,for CO_(2)reduction reaction,the CO evolution rate of 12.6μmol/h and selectivity of 75%can be achieved over this *** improved photocatalytic activities are attributed to the rapid electron transfer between the photosensitizer and the catalyst,which is strongly supported by the current densityvoltage G-V,steady-state and time-resolved photoluminescence spectra(PL).Overall,this work provides a reference for the preparation and optimization of photocatalysts with the capacity for water oxidation and CO_(2)reduction reactions.

关键词： CoO_(x)/Co/C Water oxidation CO_(2)reduction Photocatalyst Photosensitizer

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Metal nanoparticle-enhanced room temperature phosphorescence of diiodofluorescein on the filter paper substrate

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Chinese Chemical Letters 2010年第1期21卷 109-112页

作者： He, Mao Cai li, Yu Qi Zhu, Ya Xian Zhang, yong Xiamen Univ Environm Sci Res Ctr State Key Lab Marine Environm Sci Xiamen 361005 Peoples R China Xiamen Univ Dept Chem Coll Chem & Chem Engn Xiamen 361005 Peoples R China

Metal-enhanced room temperature phosphorescence of diiodofluorescein was first observed on filter paper *** phosphorescence intensity is 2.5-fold brighter from diiodofluorescein on silver nanoparticles-deposited filter paper as compared with an identical control sample without silver ***,enhanced absorption was also observed for the same *** findings suggest that both singlet and triplet states can couple to surface plasmons and enhance phosphorescence quantum yields at ...

关键词： Silver nanoparticle Enhancement Diiodofluorescein Room temperature phosphorescence

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Synthesis of novel quaternary ammonium surfactants containing adamantane

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Chinese Chemical Letters 2012年第6期23卷 653-656页

作者： Jian Wei Guo Xing zhong Hua Zhu li Juan Feng Ying De Cui Faculty of Chemical Engineering ＆ light Industry Guangdong University of Technology Guangzhou 510006 China

A series of novel quaternary ammonium surfactants containing adamantane were designed and synthesized from 1-adamanta- necarboxylic acid. The structures of target surfactants were confirmed by 1H NMR, elements analysis and FFIR. Surface properties of these surfactants were investigated. Due to the lipophilicity of adamantane, the critical micelle concentration （CMC） and C2o values of the synthesized quaternary ammonium surfactants are lower than that of conventional quaternary ammonium surfactants.

关键词： Adamantane Synthesis Quaternary ammonium surfactants 1-(Alkyldimethylammoniamethyl) adamantane bromide

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Optimal depth of in-situ pressure-preserved coring in coal seams considering roadway excavation and drilling disturbance

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Petroleum Science 2024年第5期21卷 3517-3534页

作者： Peng-Fei Cui De-Lei Shang Peng Chu Ju li Da-li Sun Tian-Yu Wang Ming-zhong Gao He-Ping Xie State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering Institute of Deep Earth Sciences and Green EnergyShenzhen UniversityShenzhen518060GuangdongChina Guangdong Provincial Key Laboratory of Deep Earth Sciences and Geothermal Energy Exploitation and Utilization Shenzhen Key Laboratory of Deep Underground Engineering Sciences and Green EnergyCollege of Civil and Transportation EngineeringShenzhen UniversityShenzhen518060GuangdongChina State Key Laboratory of Hydraulics and Mountain River Engineering Sichuan UniversityChengdu610065SichuanChina School of Mechanical Engineering Sichuan UniversityChengdu610065SichuanChina Jinshi Drilltech Co. Ltd.Tangshan063004HebeiChina

Using pressure-preserved coring technique to determine in-situ gas content provides a more precise assessment of gas resource reserves and safeguard of mining safety in coal seams. How coring technique and depth affect the determination of gas content is unclear due to borehole zoning rupture caused by roadway excavation and drilling disturbance. To this end, a proposed coupling model of stress distribution and gas migration was simulated and validated by FLAC^(3D) and COMSOL Multiphysics considering superposition effects of roadway excavation and drilling disturbance. The findings indicate that the roadway surrounding rock displays distinct zoning features including stress relief zone, stress concentration zone that is composed of plastic zone, elastic zone, and original stress zone;and the broken situations depending on the borehole peeping are consistent with the corresponding simulation *** this basis, this study proposes a set of drilling coring depth calculation and prediction model for the gas desorption affected area under engineering disturbance. Optimal depth of coring drilling is not only approach to the in-situ coal bulk, but also can get the balance of the drilling workload and cost controlling. According to the typical mine site geological conditions and the numerical simulation results in this study, if the roadway excavation time is ~1 year, it is recommended that the pressure-preserved coring depth should be greater than 17 m.

关键词： In-situ fidelity coring In-situ pressure preserved coring Gas content Drilling disturbance Coring depth Excavation damage zone

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Hyperglycemic Effects of a Periocular Dexamethasone Injection in Diabetic Patients after Vitreoretinal Surgery

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Biomedical and Environmental Sciences 2012年第3期25卷 311-316页

作者： ZHANG yong Peng PENG Xiao Yan li Zhi Hua CHEN Feng Hua Beijing Ophthalmology and Visual Science Laboratory Beo'ing Tongren Eye CenterBeijing Tongren HospitalCapital Medical UniversityBeijing 100730China

Objective To examine the hyperglycemic effects of periocular dexamethasone injection in type 2 diabetic patients after vitreoretinal surgery （VRS）. Methods This was a retrospective non-randomized controlled trial. Twenty consecutive hospitalized patients with type 2 diabetes and ocular inflammatory reaction after VRS were enrolled in this study. Ten patients received 2.5 mg dexamethasone and 10 patients received 5 mg dexamethasone. Fourteen consecutive type 2 diabetic patients without ocular inflammatory reaction after VRS were used as control group. We measured fasting blood glucose （FBG） and at 2 h after each meal （post prandial glucose, PBG; 09：00, 13：00, and 19：00 h） after periocular dexamethasone injection. Differences among three groups were determined by q tests. Results The PBG levels in both dexamethasone-treated groups started to increase within 5 h after injection （i.e., PBG at 13：00 h）, and were significantly increased at 29：00 h after injection （P〈0.05）. BG levels were almost 2-fold higher than at baseline and compared with the control group. The BG values declined gradually by 24 h to 48 h after injection. There were no differences in BG levels between the two dexamethasone-treated groups （P〉0.05）, except for PBG at 19：00 h on day 2 after injection （P〈0.05）. Conclusion Periocular dexamethasone injection can cause transient hyperglycemia in diabetic patients after VRS. BG monitoring should be performed following such injection.

关键词： Dexamethasone Periocular injection Vitreoretinal surgery Diabetes mellitus Blood glucose

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Isolation and Characterization of Proteins Interacting with Activin Type Ⅱ Receptors

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Chemical Research in Chinese Universities 2006年第2期22卷 217-220页

作者： liU Biao BAO yong-li WEI Zhuang WU Yin MENG Xiang-ying li Yu-xin YIN Wei-tian Department of Hand Surgery China-japan Union Hospital Jilin University Changchun 130031 P. R. China Institute of Genetics and Cytology Northeast Normal University Changchun 130024 P. R. China

Regulation of the number of aetivin receptors that are present in the cell membrane plays a key role in the modulation of cellular responses to activin. In order to find the regulators, a novel protein ARIPzip, interacting with activin type II receptors, was searched and identified by using yeast two-hybrid screening. ARIPzip is a splicing variant of ARIP2. This has been discussed previously. ARIPzip can specifically interact with ActR Ⅱ A, and is widely distributed in mouse tissues. Overexpression of ARIPzip can cause the activin-induced transcriptional activities to increase in a dose-dependent manner while the overexpression of ARIV2 can decrease these activities. These data suggest that the C-terminal rezions of ARIP2 and ARIPzip are involved in the regulation of activin signaling.

关键词： Activin Activin receptor Ⅱ A( ActR Ⅱ A) Activin receptor interaction protein(ARIP)

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Cloning and Expression Level Analysis of Two BnaANT Candidate Genes in Brassica napus

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Agricultural Sciences in China 2010年第4期9卷 488-496页

作者： CHEN Bo WANG Tai-xia WANG Han-zhong li Yun-chang YAN Xiao-hong WANG li-jun WEIWen-hui Institute of Oil Crops Chinese Academy of Agricultural Sciences/Key Laboratory for Biological Sciences of Oil Crops Ministry of Agriculture Wuhan 430062 P.R.China College of life Sciences Henan Normal University Xinxiang 453007 P.R.China

AINTEGUMENTA （ANT） gene has been proved to have a novel function on controlling the organ size and the seed weight in Arabidopsis thaliana, the research on its orthologous gene in Brassica napus will be of potential interest to elucidate the molecular mechanism of rapeseed development and increase the rapeseed output. A SMART cDNA library of the flower bud from B. napus cultivar zhongshuang 9 was constructed, and the full-length cDNAs of two homologous BnaANT candidate genes were cloned by PCR in B. napus, namely ***.a （GenBank accession no. DQ211969） and ***.b （accession no. DQ211970）. They shared 87.1 and 83.4% amino acid identity with ANT of A. thaliana, respectively. There is 87.4% amino acid identity between ***.a and ***.b. By quantitative real-time PCR, the obviously differential expression levels of the two BnaANT candidate genes were detected in the 28 DAF seeds of the big and small grains B. napus lines, the expression abundance of BnaANT in the 28 DAF seed of 9311 was over three times compared to that of 9260, which indicates that these two BnaANT genes are also likely related to the floral organ size and the seed weight in B. napus.

关键词： AINTEGUMENTA gene Brassica napus BnaANT gene yield-related gene quantitative real-time PCR

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Relay C(sp^(3))-H bond trifluoromethylthiolation and amidation by visible light photoredox catalysis

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Science China Chemistry 2024年第11期67卷 3844-3850页

作者： Junheng liu Suqi Yang Shunruo Yao Chengjian Zhu yong liu Weipeng li Jin Xie State Key Laboratory of Coordination Chemistry Jiangsu Key Laboratory of Advanced Organic MaterialsChemistry and Biomedicine Innovation Center(ChemBIC)School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China Green Catalysis Center College of ChemistryZhengzhou UniversityZhengzhou 450001China State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic ChemistryShanghai 200032China Nanjing Bready Advanced Materials Technology Co. Ltd.Nanjing 221100China State Key Laboratory of Natural Medicines China Pharmaceutical UniversityNanjing 211198China

Selective functionalization of C(sp^(3))–H bonds is a straightforward and practical method to construct complex molecule skeletons. In this field, direct transformation of unactivated C(sp^(3))–H bonds into C(sp^(3))–SCF_(3) architectures is still a great *** report a highly selective trifluoromethylthiolation of unactivated aliphatic C(sp^(3))–H bonds by combination of proton-coupled electron transfer(PCET) and hydrogen atom transfer(HAT) strategy. A wide range of structurally diverse alkyl trifluoromethyl sulfides are obtained. Furthermore, the use of two different photocatalysts can realize an unprecedented trifluoromethylthiolation and amidation cascade of different C(sp^(3))–H bonds. It can afford a good access to bifunctionalized molecules in synthetically useful yields.

关键词： photoredox catalysis C–H activation trifluoromethylthiolation amidation PCET

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Measuring Stress Distributions of Orthotropic Composite Material in Plane Stress State by the Lock-in Infrared Thermography Technique

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Chinese Physics Letters 2011年第6期28卷 179-182页

作者： li Xu-Dong WANG Wei-Bo li yong-Sheng WU Dong-liu China Aero-Polytechnology Establishment Beijing 100028 China Ship Scientific Research Center Wuxi 214082

Feasibility of measuring stress distributions of orthotropic composite materials and structures in plane stress state by the lock-in infrared thermography technique is analyzed and stress distributions of a lap joint structure made of a kind of glass reinforced plastic composite lamination plates under tensile loadings are obtained by the lock-in infrared thermography *** and credibility of using this technique to measure stress distributions of orthotropic composite materials and structures in plane stress state are proved by comparing the results with the data given by the digital speckle correlation method.

关键词： technique method orthotropic

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Multi-block electret-based mechanical antenna model for low frequency communication

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International Journal of Modeling, Simulation, and Scientific Computing 2019年第5期10卷 143-155页

作者： Bowen liang yong Cui Xiao Song liangya li Chen Wang School of Automation Science and Electrical Engineering Beihang University BeijingP.R.China

In an LF/VLF transmission system,the performance of the antenna is of great importance to the entire ***,the electret-based mechanical LF/VLF antenna uses mechanical movement to accelerate electret charges to produce LF/VLF electromagnetic waves,and the frequency of these electromagnetic waves is limited by the rotation speed of the actuating *** on research that addressed the relationship between antenna structure and electromagnetic wave frequency,this paper—in order to increase the frequency of electromagnetic waves—alters the charge distribution mode of the mechanical antenna while keeping the motor’s rotational speed constant to realize an increase of transmission signal *** effectiveness of this method was verified by model simulation.

关键词： Electret LF/VLF antenna model magnetic field computing

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