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Cu clusters immobilized on Cd-defective cadmium sulfide nano-rods towards photocatalytic CO_(2)reduction

Journal of Materials Science & Technology 2022年第23期118卷 54-63页

作者： Lei Cheng Baihai Li hui yin Jiajie Fan Quanjun Xiang State Key Laboratory of Electronic Thin Film and Integrated Devices School of Electronic Science and EngineeringUniversity of Electronic Science and Technology of ChinaChengdu 610054China Yangtze Delta Region Institute(Huzhou) University of Electronic Science and Technology of ChinaHuzhou 313001China School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 610054China College of Resources and Environment Huazhong Agricultural UniversityWuhan 430070China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450002China

Single-site metal atoms or clusters(SMCs)present high potential to enable the exploration of energetics and kinetics in heterogeneous photocatalysis owing to their unique properties.Here,we report the first work for highly no ligands-protected atomic-level Cu clusters by mediating them in Cd vacancies at the edge of Cd S nanorods(Cu CR SCC)towards photocatalytic CO_(2)conversion.X-ray absorption spectrometric analysis and photoelectric dynamic characterizations demonstrate that the well-defined Cu clusters across the Cd vacancies induce a synergistic effect on CO_(2)reduction through the interfacial conjunction,accelerating charge carrier mobility and facilitating atom utilization.In situ diffuse reflectance infrared Fourier transform spectroscopy,low-coverage calculated isosteric heat,and theoretical studies unveil that the direct cluster/substrate conjunction provides a driving force for interfacial electronic modification and dynamic cooperation.Besides,Cu acts as the active site in the process of CO_(2)photoreduction,which enhances the adsorption and activation of CO_(2).Consequently,this leads to outstanding CO_(2)-to-CO conversion with a turnover number of more than 90 without the addition of any sacrificial agent.Particularly,the Cu clusters-mediated Cd S nanorods are able to serve as carrier provider,allowing the photogenerated electrons transfer from Cd S to Cu clusters.These electrons received from Cd S can further enhance the charge carrier separation and thus achieve high photostability during longtime light irradiation.

关键词： Single-site Cu Cd-vacancies Interfacial conjunction CdS nano-rods Photocatalytic CO_(2) reduction

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Anion-induced differential assembly and structural transformation of supramolecular coordination cages

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Chinese Chemical Letters 2024年第3期35卷 268-272页

作者： Shao-Ping Zheng Yao-Wei Xu Pei-Yang Su Chen-hui Liu yin-hui Huang Yu-Lin Lu Zhang-Wen Wei Zhiwei Jiao Hai-Sen Xu Cheng-Yong Su MOE Laboratory of Bioinorganic and Synthetic Chemistry Lehn Institute of Functional MaterialsSchool of ChemistrySun Yat-sen UniversityGuangzhou 510006China Institute of Environmental Research at Greater Bay Area Guangzhou UniversityGuangzhou 510006China State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai 200032China

The intimate host-anion interactions will regulate thermodynamics and kinetics in the self-assembly of cationic cages mimicking biological counterparts.Herein,we report construction and transformation of three Pd(Ⅱ)-based metal-organic cages(MOCs)depending on different anions.Stoichiometric conversions of the lantern-shaped MOC-34 into either octahedral MOC-35 or tricapped trigonal prism MOC-36 are induced by BF_(4)^(–)or NO_(3)^(–),respectively.MOC-36 is kinetically favored and can undergo quantitative conversion to the thermodynamically preferred MOC-35 upon heating,accelerated by excess BF_(4)^(–)to motivate dissociative dynamics of Pd-vertices and lower activation barrier of cage transformation.The guest encapsulation behaviors of MOC-35 and MOC-36 have also been tested.These results manifest a significance of host-anion dynamics beyond complementary anion template,shedding light on the understanding of intricate anion recognition in nature.

关键词： Supramolecular coordination cage Dynamic host-anion interactions Structural transformation Anion receptor Guest inclusion

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Deformation,structure and potential hazard of a landslide based on InSAR in Banbar county,Xizang(Tibet)

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China Geology 2024年第2期7卷 203-221页

作者： Guan-hua Zhao Heng-xing Lan hui-yong yin Lang-ping Li Alexander Strom Wei-feng Sun Chao-yang Tian College of Earth Science and Engineering Shandong University of Science and TechnologyQingdao 266590China State Key Laboratory of Resources and Environmental Information System Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China School of Geological Engineering and Geomatics Chang’an UniversityXi’an 710054China Key Laboratory of Ecological Geology and Disaster Prevention Ministry of Natural ResourcesXi’an 710054China University of Chinese Academy of Sciences Beijing 100049China JSC“Hydroproject Institute” Moscow 125993Russia

The Tibetan Plateau is characterized by complex geological conditions and a relatively fragile ecological environment.In recent years,there has been continuous development and increased human activity in the Tibetan Plateau region,leading to a rising risk of landslides.The landslide in Banbar County,Xizang(Tibet),have been perturbed by ongoing disturbances from human engineering activities,making it susceptible to instability and displaying distinct features.In this study,small baseline subset synthetic aperture radar interferometry(SBAS-InSAR)technology is used to obtain the Line of Sight(LOS)deformation velocity field in the study area,and then the slope-orientation deformation field of the landslide is obtained according to the spatial geometric relationship between the satellite’s LOS direction and the landslide.Subsequently,the landslide thickness is inverted by applying the mass conservation criterion.The results show that the movement area of the landslide is about 6.57×10^(4)m^(2),and the landslide volume is about 1.45×10^(6)m^(3).The maximum estimated thickness and average thickness of the landslide are 39 m and 22 m,respectively.The thickness estimation results align with the findings from on-site investigation,indicating the applicability of this method to large-scale earth slides.The deformation rate of the landslide exhibits a notable correlation with temperature variations,with rainfall playing a supportive role in the deformation process and displaying a certain lag.Human activities exert the most substantial influence on the spatial heterogeneity of landslide deformation,leading to the direct impact of several prominent deformation areas due to human interventions.Simultaneously,utilizing the long short-term memory(LSTM)model to predict landslide displacement,and the forecast results demonstrate the effectiveness of the LSTM model in predicting landslides that are in a continuous development and movement phase.The landslide is still active,and based on the spatial heterogeneity of landslide deform

关键词： Landslide InSAR Human activity Deformation Structure LSTM model Engineering construction Thickness Neural network Machine learning Prediction and prevention Tibetan Plateau Geological hazards survey engineering

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Effects of cobalt doping on the reactivity of hausmannite for As(Ⅲ)oxidation and As(Ⅴ)adsorption

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Journal of Environmental Sciences 2022年第12期34卷 217-226页

作者： Shuang Zhang hui Li Zhongkuan Wu Jeffrey EPost Bruno Lanson Yurong Liu Biyun Hu Mingxia Wang Limei Zhang Mei Hong Fan Liu hui yin Key Laboratory of Arable Land Conservation(Middle and Lower Reaches of Yangtse River) Ministry of Agriculture and Rural affairsCollege of Resources and EnvironmentHuazhong Agricultural UniversityWuhan 430070China State Environmental Protection Key Laboratory of Soil Health and Green Remediation Ministry of Ecology and EnvironmentHuazhong Agricultural UniversityWuhan 430070China Department of Crop and Soil Sciences North Carolina State UniversityRaleighNorth Carolina 27695USA College of Environment Zhejiang University of TechnologyHangzhou 310014China Department of Mineral Sciences NHB 119Smithsonian InstitutionWashington DC 20013-7012USA UniversitéGrenoble Alpes Grenoble F-38000France CNRS IRDUniversity of Savoy Mont BlancFrance ISTerre UniversitéGustave EiffelFrance The Forestry Prospect Design Institute Of Hubei Province Wuhan 430070China College of Grassland Resources and EnvironmentInner Mongolia Agricultural UniversityHohhot 010018China

Hausmannite is a common low valence Mn oxide mineral,with a distorted spinel structure,in surficial sediments.Although natural Mn oxides often contain various impurities of transitional metals(TMs),few studies have addressed the effect and related mechanism of TM doping on the reactivity of hausmannite with metal pollutants.Here,the reactivity of cobalt(Co)doped hausmannite with aqueous As(Ⅲ)and As(Ⅴ)was studied.Co doping decreased the point of zero charge of hausmannite and its adsorption capacity for As(Ⅴ).Despite a reduction of the initial As(Ⅲ)oxidation rate,Co-doped hausmannite could effectively oxidize As(Ⅲ)to As(Ⅴ),followed by the adsorption and fixation of a large amount of As(Ⅴ)on the mineral surface.Arsenic K-edge EXAFS analysis of the samples after As(Ⅴ)adsorption and As(Ⅲ)oxidation revealed that only As(Ⅴ)was adsorbed on the mineral surface,with an average As-Mn distance of 3.25–3.30 A,indicating the formation of bidentate binuclear complexes.These results provide new insights into the interaction mechanism between TMs and low valence Mn oxides and their effect on the geochemical behaviors of metal pollutants.

关键词： Mn oxide Hausmannite Transition-metal Cobalt Arsenate adsorption Arsenite oxidation

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Parameters Identification for Extended Debye Model of XLPE Cables Based on Sparsity-Promoting Dynamic Mode Decomposition Method

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Energy Engineering 2023年第10期120卷 2433-2448页

作者： Weijun Wang Min Chen hui yin Yuan Li Guiyang Power Supply Bureau Guizhou Power Grid Co.Ltd.Guiyang550004China College of Electrical Engineering Sichuan UniversityChengdu610065China

To identify the parameters of the extended Debye model of XLPE cables,and therefore evaluate the insulation performance of the samples,the sparsity-promoting dynamicmode decomposition(SPDMD)methodwas introduced,aswell the basics and processes of its applicationwere explained.The amplitude vector based on polarization current was first calculated.Based on the non-zero elements of the vector,the number of branches and parameters including the coefficients and time constants of each branch of the extended Debye model were derived.Further research on parameter identification of XLPE cables at different aging stages based on the SPDMD method was carried out to verify the practicability of the method.Compared with the traditional differential method,the simulation and experiment indicated that the SPDMD method can effectively avoid problems such as the relaxation peak being unobvious,and possessing more accuracy during the parameter identification.And due to the polarization current being less affected by the measurement noise than the depolarization current,the SPDMD identification results based on the polarization current spectral line proved to be better at reflecting the response characteristics of the dielectric.In addition,the time domain polarization current test results can be converted into the frequency domain,and then used to obtain the dielectric loss factor spectrum of the insulation.The integral of the dielectric loss factor on a frequency domain can effectively evaluate the insulation condition of the XLPE cable.

关键词： Cable insulation dielectric response sparsity-promoting dynamic mode decomposition parameter identification

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Development and Validation of Diagnostic Criteria for Elderly Atopic Dermatitis

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International Journal of Dermatology And Venereology 2024年第1期07卷 1-5页

作者： Wang Shang-Shang Li Zheng Gu Chao-ying yin hui-Bin Wu Yue-Meng Yao Xu Li Wei Chinese Academy of Medical Sciences and Peking Union Medical College Nanjing Jiangsu 210042 Department of Dermatology Shanghai Institute of Dermatology Huashan Hospital Fudan University Shanghai 200040 China Department of Allergy and Rheumatology Jiangsu Key Laboratory of Molecular Biology for Skin Diseases and STIs Hospital for Skin Diseases (Institute of Dermatology)

Objective: Elderly atopic dermatitis (AD) is a newly identified subtype of AD. Whether specific diagnostic criteria are needed for elderly AD has been debated. This study aimed to propose diagnostic criteria for elderly AD and evaluate the sensitivity.Methods: A hospital-based study was conducted. We screened the clinical features of 1,312 patients with AD of different ages in 1 cohort and proposed a set of diagnostic criteria for elderly AD. The criteria were then validated in another cohort of 223 patients clinically diagnosed with elderly AD by dermatologists specialized in AD to examine the diagnostic sensitivity compared with other criteria by chi-square test.Results: Based on the patients’ clinical features, a set of diagnostic criteria for elderly AD were proposed. The new diagnostic criteria showed significantly higher sensitivity than the classical diagnostic criteria (P < 0.001), especially for mild and moderate AD (P < 0.001). Of all 223 patients with elderly AD, 93.3% fulfilled our criteria, while only 43.5%, 65.5%, and 52.0% fulfilled the Hanifin and Rajka criteria, the Japanese Dermatology Academy criteria, and the United Kingdom Working Party criteria, respectively.Conclusion: The newly proposed criteria for elderly AD yielded high diagnostic sensitivity, particularly for mild and moderate AD.

关键词： atopic dermatitis elderly diagnostic criteria sensitivity clinical features atypical

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A pH-responsive biomimetic drug delivery nanosystem for targeted chemo-photothermal therapy of tumors

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Nano Research 2022年第5期15卷 4274-4284页

作者： Yanmin Ju Zhiyi Wang Zeeshan Ali Hongchen Zhang Yazhou Wang Nuo Xu hui yin Fugeng Sheng Yanglong Hou Beijing Key Laboratory for Magnetoelectric Materials and Devices(BKL-MMD) Beijing Innovation Centre for Engineering Science and Advanced Technology(BIC-ESAT)School of Materials Science and EngineeringPeking UniversityBeijing 100871China College of Pharmacy China Pharmaceutical UniversityNanjing 211198China Synthetic and Functional Biomolecules Center Department of Chemical BiologyCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China Fifth Medical Center of Chinese PLA General Hospital Beijing 100071China

Smart drug delivery nanosystem is significant for tumor treatments due to its possibility of temporally,spatially,and dose-controlled release.However,the therapeutic efficacy of drug delivery nanosystem is often compromised in cancer treatment as the enrichment of therapeutic agents in the reticuloendothelial system.Herein,doxorubicin(DOX)loaded biomimetic drug delivery nanosystem with macrophage cell membrane(MCM)camouflaged,MnFe_(2)O_(4)-DOX-MCM nanocube(NC),is developed for cancer treatment with tumor targeting,pH-stimuli drug release,and chemo-photothermal therapeutic effects.The nanosystem shows the capability of immune escape and enhanced cellular uptake of cancer cells due to the MCM decoration.Acid-labile bond between the MnFe2O4 NCs and DOX remains stable at physiological condition and release drugs immediately in response to the endo-/lysosome pH stimuli.Meanwhile,the photothermal effect of the nanosystem destroys tumor tissue,which further promotes chemotherapeutic efficacy.In vivo results demonstrate the tumor homing ability and produce a notable synergistic therapeutic effect of the NCs.Thus,biomimetic pH-responsive drug delivery nanosystem,MnFe_(2)O_(4)-DOX-MCM NCs,is an effective nanoplatform,which might be potential application for cancer synergistic treatment.

关键词： drug delivery macrophage cell membrane pH stimuli synergistic therapy

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Structure and properties of Co-doped cryptomelane and its enhanced removal of Pb^(2+) and Cr^(3+) from wastewater

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Journal of Environmental Sciences 2015年第8期27卷 77-85页

作者： hui Li Fan Liu Mengqiang Zhu Xionghan Feng Jing Zhang hui yin Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtse River) Ministry of AgricultureCollege of Resources and Environment Huazhong Agricultural University Department of Ecosystem Science and Management University of Wyoming Beijing Synchrotron Radiation Facility Institute of High Energy Physics Chinese Academy of Sciences

Cryptomelane is a reactive Mn oxide and has been used in removal of heavy metal from wastewaters. Co-doped cryptomelane was synthesized by refluxing at ambient pressure and characterized by powder X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy and extended X-ray absorption fine structure spectroscopy, and its performances for removal of Pb^2＋ and Cr^3＋ from aqueous solutions were investigated. Co doping has a negligible effect on the structure and morphology of cryptomelane but increases the specific surface area and Mn average oxidation state. Mn and Co K-edge extended X-ray absorption fine structure spectroscopy（EXAFS） analysis shows that Co barely affects the atomic coordination environments of Mn, and distances of edge- and corner-sharing Co–Me（Me_Co, Mn） pairs are shorter than those of the corresponding Mn–Me pairs, implying the replacement of framework Mn（III） by Co（III）. These Co-doped cryptomelanes can quickly oxidize Cr3＋to be HCr O4-and remove 45%–66% of the total Cr in the reaction systems by adsorption and fixation, and they have enhanced Pb2＋adsorption capacities. Thus these materials are promising adsorbents for heavy metal remediation. The results demonstrate the design and modification of environmental friendly Mn oxide materials and can help us understand the interaction mechanisms of transition metals with Mn oxides.

关键词： Cryptomelane Co doping EXAFS Pb2＋adsorption Cr^3＋oxidation

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胸腔内迷走神经阻滞对肺叶切除术患者术后恶心呕吐的影响

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临床麻醉学杂志 2024年第4期40卷 384-388页

作者：尹慧胡有力南京医科大学第一附属医院麻醉与围术期医学科 210029

目的通过观察胸腔内迷走神经阻滞对肺叶切除术患者术后恶心呕吐(PONV)的影响,验证胃肠-迷走神经-脑轴在肺叶切除术PONV中起到重要的作用。方法选择择期行胸腔镜下右侧肺叶切除术的女性患者180例,年龄30~75岁,BMI 18~30 kg/m^(2),ASA... 详细信息

目的通过观察胸腔内迷走神经阻滞对肺叶切除术患者术后恶心呕吐(PONV)的影响,验证胃肠-迷走神经-脑轴在肺叶切除术PONV中起到重要的作用。方法选择择期行胸腔镜下右侧肺叶切除术的女性患者180例,年龄30~75岁,BMI 18~30 kg/m^(2),ASAⅠ—Ⅲ级。采用随机数字表法将患者分为两组:胸腔内迷走神经阻滞组(VB组)和对照组(C组),每组90例。术中由外科医师在胸腔镜下对VB组使用0.75%罗哌卡因2.5 ml行气管下段右侧迷走神经阻滞,C组不行胸腔内迷走神经阻滞。记录肺叶切除术后24 h内PONV发生情况。记录术后24 h内首次肛门排气和排便情况、补救性止吐药应用情况、术后24 h数字疼痛评分量表(NRS)评分、意识模糊评估法-中文修订版(CAM-CR)评分。记录术后24 h内咳嗽、低血压等不良反应发生情况。结果两组患者年龄、BMI、ASA分级、晕动症、PONV病史、高血压和糖尿病发生率差异无统计学意义。两组无一例吸烟、哮喘病史。与C组比较,术后24 h内VB组PONV发生率明显降低[24(27%) vs 39 (43%),(P<0.05)]。两组术后24 h内首次肛门排气和排便情况、补救性止吐药应用情况、术后24 h NRS评分、CAM-CR评分差异无统计学意义。两组术后24 h内无一例咳嗽、低血压等不良反应。结论肺叶切除术中胸腔内迷走神经阻滞能够有效减少PONV的发生,提示迷走传入神经在介导PONV的发生中起到重要的作用。

关键词：肺叶切除术术后恶心呕吐迷走神经神经阻滞胃肠-迷走神经-脑轴

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冲击荷载下节段拼装梁的响应与破坏特征研究

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中国公路学报 2024年第5期37卷 188-200页

作者：王银辉石宝斌陈闯罗征浙江大学建筑工程学院浙江杭州310000 浙大宁波理工学院土木建筑工程学院浙江宁波315100

由于节段拼装梁在接缝处混凝土和钢筋均不连续,导致其剪切破坏机制更加突出,冲击荷载作用会进一步加剧其破坏向更具局部特征的剪切破坏演变。为了解冲击荷载下节段拼装梁的响应与破坏特征,开展了试验梁落锤冲击试验,并结合LS-DYNA数值... 详细信息

由于节段拼装梁在接缝处混凝土和钢筋均不连续,导致其剪切破坏机制更加突出,冲击荷载作用会进一步加剧其破坏向更具局部特征的剪切破坏演变。为了解冲击荷载下节段拼装梁的响应与破坏特征,开展了试验梁落锤冲击试验,并结合LS-DYNA数值模拟分析,得到冲击荷载作用下梁的裂缝发展、破坏过程、形态等破坏特征,获得梁体变形、支座反力、内力分布等动力响应,揭示了节段长度、冲击能量、冲击作用位置等因素对节段拼装梁的动力响应与破坏特征的影响规律。结果表明:冲击荷载作用下节段拼装梁的局部剪切破坏特征突出,损伤和破坏位置集中于冲击作用点所在节段及接缝,典型破坏形式有斜截面破坏和接缝截面直剪破坏2种,冲击作用点与接缝的相对位置对破坏形式影响显著;混凝土和预应力筋的变形是冲击能量耗散的主要原因,普通钢筋耗能贡献可以忽略;梁体变形在接缝位置呈折线状,位移响应时间比整体梁更长,残余变形小;冲击作用点附近截面剪力峰值达到冲击力峰值的40%左右,较大剪力是导致节段拼装梁在局部形成斜截面破坏和直剪破坏的主要原因。

关键词：桥梁工程冲击破坏特征落锤冲击试验节段预制拼装梁数值模拟

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