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ch.nese Journal of chemical Engineering 2024年第7期71卷 110-121页

作者： Aishun Ma Hanlin Qian hongxia Liu Sili Ren Jiangxi Key Laboratory of Mining&Metallurgy Environmental Pollution Control Jiangxi University of Science and TechnologyGanzhou 341000China Jiangxi Provincial Key Laboratory of Low-Carbon Processing and Utilization of Strategic Metal Mineral Resources Jiangxi University of Science and TechnologyGanzhou 341000China

Visible-light-driven photocatalysis is a promising technology for the treatment of dye *** this work,a novel photocatalyst of K-doped g-C_(3)n_(4) loaded on magnetic attapulgite(ATP)(Kω-g-C_(3)n_(4)@ATP-Fe_(3)O_(4))with excellent visible light photocatalytic properties and stability were successfully prepared and *** removal efficiency of Kω-g-C_(3)n_(4)@ATP-Fe_(3)O_(4) for malachite green(MG)was studied,and the degradation mech.nism was analyzed and *** was found that the K_(5)-g-C_(3)n_(4)@ATP-Fe_(3)O_(4) photocatalyst possessed excellent degradation efficiency of over 98.0%for the MG dye wastewater under optimal ***,the K_(5)-g-C_(3)n_(4)@ATP-Fe_(3)O_(4) materials possessed good recyclability with a removal rate over 82%after 4 *** visible light condition,the K_(5)-g-C_(3)n_(4)@ATP-Fe_(3)O_(4) photocatalyst produce radicals of·OH and O_(2)^(-)to degrade the MG dyes,which was supported by electron paramagnetic resonance(EPR)and radical trapping *** addition,the LC-MS analysis interpreted the degradation pathways and intermediates of MG in the *** findings in this work indicate that the prepared photocatalytic material has excellent degradation efficiency for MG and can be applied in dye wastewater treatment.

关键词： Photocatalyst Malachite green K-doped g-C_(3)n_(4) Degradation

Reliability Analysis of Reinforcement Based on GM(1,1)-Markov Semi-immersion Test

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Journal of Wuhan University of Technology(Materials Science) 2024年第5期39卷 1177-1187页

作者： FU Yong QIAO hongxia HAKUZWEYEZU Theogene School of Civil Engineering Lanzhou University of TechnologyLanzhou 730050China Gansu Advanced Civil Engineering Materials Engineering Research Center Lanzhou 730050China State Key Laboratory of Geomech.nics and Geotechnical Enginering Institute of Rock and Soil MechanicsChinese Academy of SciencesWuhan 430071China Civil Engineering Department University of Chinese Academy of SciencesBeijing 100049China

To investigate the corrosion degradation law and service life of reinforced concrete in various salt solution environments,reinforced concrete specimens were semi-immersed in 3%na_(2)CO_(3)(n3-0-0),3%na_(2)CO_(3)+3%naCl(n3-Cl3-0)and 3%na_(2)CO_(3)+3%naCl+3%na_(2)SO_(4)(n3-Cl3-S3)salt *** electrochemical workstation was used for regular non-destructive testing,and the polarization curve and related electrochemical parameters were used as the macroscopic durability evaluation indicators,while microscopic analysis of steel bar corrosion products was performed in combination with SEM and *** addition,the corrosion current density degradation model of GM(1,1)was established and compared with the modified GM(1,1)-Markov degradation *** results showed that the prediction error of the GM(1,1)-Markov model was smaller and more accurate than that of GM(1,1).The reinforced concrete specimens in the n3-0-0,n3-Cl3-0 and n3-Cl3-S3 solutions reached the failure state in 3.08,1.67,and 2.30 years,respectively,as predicted by the GM(1,1)-Markov *** to ESM and EDS microscopic analysis of reinforcement,carbonate had no significant effect on reinforcement corrosion,chloride ions played a dominant role in reinforcement corrosion,and sulfate ion improved concrete's resistance to chloride ion *** on GM(1,1)-Markov model,the failure and damage of reinforced concrete in saline soil areas can be quantitatively evaluated in the whole life cycle,which provides a theoretical basis for the early maintenance or reinforcing of reinforced concrete.

关键词： salt solution semi-immersion corrosion current density GM(1,1)-Markov

Cooperation between single atom catalyst and support to promote nitrogen electroreduction to ammonia:A theoretical insight

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Journal of Energy chemistry 2024年第9期96卷 336-344页

作者： Wanying Guo Siyao Wang hongxia Wang Qinghai Cai Jingxiang Zhao College of chemistry and chemical Engineering Harbin Normal UniversityHarbin 150025HeilongjiangChina

The co-catalysis between single atom catalyst(SAC)and its support has recently emerged as a promising strategy to synergistically boost the catalytic activity of some complex electrochemical reactions,encompassing multiple intermediates and ***,we utilized defective BC_(3)monolayer-supported SACs as a prototype to investigate the cooperative effects of SACs and their support on the catalytic performance of the nitrogen reduction reaction(nRR)for ammonia(nH_(3))*** results showed that these SACs can be firmly stabilized on these defective BC_(3)supports with high stability against ***,co-activation of the inert n_(2)reactant was observed in certain embedded SACs and their neighboring B atoms on certain BC3 sheets due to the noticeable charge transfer and significant n–n bond *** high-throughput screening revealed that the Mo/DV_(CC)and W/DV_(CC)exhibit superior nRR catalytic performance,characterized by a low limiting potential of−0.33 and−0.43 V,respectively,which can be further increased under acid conditions based on the constant potential ***,varying nRR catalytic activities can be attributed to the differences in the valence state of active ***,further microkinetic modeling analysis displayed that the turnover frequency of n_(2)–to–nH_(3)conversion on Mo/DV_(CC)is as large as 1.20×10^(−3)s^(−1)site^(−1) at 700 K and 100 bar,thus guaranteeing its ultra-fast reaction *** results not only suggest promising advanced electrocatalysts for nRR but also offer an effective avenue to regulate the electrocatalytic performance via the co-catalytic metal–support interactions.

关键词： Co-catalysis Single atom catalyst nitrogen reduction DFT computations

From seawater to hydrogen via direct photocatalytic vapor splitting: A review on device design and system integration

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Frontiers in Energy 2024年第3期18卷 291-307页

作者： hongxia LI Khaja WAHAB AHMED Mohamed A.ABDELSALAM Michael FOWLER Xiao-Yu WU Technology Innovation Institute Masdar CityAbu Dhabi 9639United Arab Emirates Department of chemical Engineering University of WaterlooWaterlooON N2L 3G1Canada Department of Mech.nical and nuclear Engineering Khalifa University of Science and TechnologyAbu Dhabi 127788United Arab Emirates Department of Mech.nical and Mechatronics Engineering University of WaterlooWaterlooON N2L 3G1Canada

Solar-driven hydrogen production from seawater attracts great interest for its emerging role in decarbonizing global energy consumption. Given the complexity of natural seawater content, photocatalytic vapor splitting offers a low-cost and safe solution, but with a very low solar-to-hydrogen conversion efficiency. With a focus on cutting-edge photothermal–photocatalytic device design and system integration, the recent research advances on vapor splitting from seawater, as well as industrial implementations in the past decades were reviewed. In addition, the design strategies of the key processes were reviewed, including vapor temperature and pressure control during solar thermal vapor generation from seawater, capillary-fed vaporization with salt repellent, and direct photocatalytic vapor splitting for hydrogen production. Moreover, the existing laboratory-scale and industrial-scale systems, and the integration principles and remaining challenges in the future seawater-to-hydrogen technology were discussed.

关键词： seawater hydrogen photocatalytic vapor splitting solar-driven

Enhanced photocatalytic ammonia oxidation activity and nitrogen selectivity over Ag/AgCl/n-TiO_(2) photocatalyst

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Journal of Environmental Sciences 2024年第4期138卷 395-405页

作者： Jiaojiao Guan Daorong Li Jiahui Feng Peng Xu Zhaonian Li Siqi Ge hongxia ch.n Kunfeng Zhang College of Environmental Engineering Henan University of TechnologyZhengzhou 450001China CAS Key Laboratory of Standardization and Measurement for nanotechnology National Center for Nanoscience and TechnologyBeijing 100190China Department of chemistry Tsinghua UniversityBeijing 100084China

The removal of ammonia(nH_(3))emitted from agricultural and industrial activities is of great significance to protect human health and ecological *** nH_(3)oxidation to n2under mild conditions is a promising ***,developing visible light photocatalysts for nH_(3)oxidation is still in its ***,we fabricate n-TiO_(2)and Ag/AgCl/n-TiO_(2)photocatalysts by sol-gel and photodeposition methods,*** introduction of n not only endows TiO_(2)with visible light response(absorption edge at460 nm)but also results in the formation of heterophase junction(anatase and rutile).Thus,n-TiO_(2)shows 2.0 and 1.8 times higher than those over anatase TiO_(2)and commercial TiO_(2)for nH_(3)oxidation under full spectrum ***,surface modification of Ag can simultaneously enhance visible light absorption(generating localized surface plasmon resonance effect)and charge separation ***,the photocatalytic activity of Ag/AgCl/n-TiO_(2)is further ***,the presence of n and Ag also enhances the selectivity of n2product owing to the ch.nge of reaction *** work simultaneously regulates photocatalytic conversion efficiency and product selectivity,providing some guidance for developing highly efficient photocatalysts for nH_(3)elimination.

关键词： TiO_(2) Doping Surface modification Photocatalysis nH_(3)elimination

Volumetric and viscometric properties of aqueous 1,2-dimethylethylenediamine solution for carbon capture application

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Petroleum 2024年第2期10卷 326-337页

作者： Hossein Haghani Teerawat Sema Pipat na Ranong Thanthip Kiattinirachara Benjapon chalermsinsuwan hongxia Gao Zhiwu Liang Paitoon Tontiwachwuthikul Department of chemical Technology Faculty of ScienceChulalongkorn UniversityBangkok10330Thailand Center of Excellence on Petrochemical and Materials Technology Chulalongkorn UniversityBangkok10330Thailand Department of chemical Engineering Faculty of EngineeringMahidol UniversityNakhon Pathom73170Thailand Joint International Center for CO_(2)Capture and Storage(iCCS) Provincial Hunan Key Laboratory for Cost-effective Utilization of Fossil Fuel Aimed at Reducing CO_(2)EmissionsCollege of Chemistry and Chemical EngineeringHunan UniversityChangsha410082PR China Clean Energy Technologies Research Institute(CETRi) Faculty of Engineering and Applied ScienceUniversity of ReginaSKS4S0A2Canada

The present work investigates the volumetric and viscometric properties of an aqueous solution of 1,2-dimethylethylenediamine(DEEDA)over an entire concentration range and an absorber operating temperature range of 313.15K-333.15K at atmospheric *** investigated volumetric properties included the density,excess molar volume,partial molar volume,and the investigated viscometric properties included the viscosity,viscosity deviation,free energy for activation of viscous flow,excess free energy for activation of viscous flow,and excess entropy for activation of viscous *** results indicated that there are strong intermolecular interactions and suitable molecular packing in the binary DEEDA-water ***,the mixture was found to deviate from a real mixture according to the calculated excess *** DEEDA solvent's preliminary volumetric and viscometric properties revealed convincing potential as a novel amine for carbon ***,the Redlich-Kister-based correlations showed favorable correlative performance for excess molar volume,viscosity deviation,and excess entropy for activation of viscous flow.

关键词： Density Viscosity Excess property Amine Carbon capture

Observation of Arctic surface currents using data from a surface drifting buoy

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Acta Oceanologica Sinica 2024年第1期43卷 70-79页

作者： hongxia ch.n Lina Lin Long Fan Wangxiao Yang Yinke Dou Bingrui Li Yan He Bin Kong Guangyu Zuo na Liu First Institute of Oceanography Ministry of Natural ResourcesQingdao 266061China Laboratory for Regional Oceanography and numerical Modeling Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China Key Laboratory of Marine Science and numerical Modeling Ministry of Natural ResourcesQingdao 266061China naval Research Academy Tianjin 300061China College of Electrical and Power Engineering Taiyuan University of TechnologyTaiyuan 030024China Polar Research Institute of ch.na Shanghai 443005China

During the 10th ch.nese Arctic scientific expedition carried out in the summer of 2019,the surface current in the high-latitude areas of the Arctic Ocean was observed using a self-developed surface drifting buoy,which was initially deployed in the chukchi *** buoy traversed the chukchi Sea,chukchi Abyssal Plain,Mendeleev Ridge,Makarov Basin,and Canada Basin over a period of 632 *** returning to the Mendeleev Ridge,it continued to drift toward the ***,the track of the buoy reflected the characteristics of the transpolar drift and chukchi Slope Current,as well as the inertial flow,cross-ridge surface flow,and even the surface disorganized flow for some time *** results showed that:(1)the transpolar drift mainly occurs in the chukchi Abyssal Plain,Mendeleev Ridge,and western Canada Basin to the east of the ridge where sea ice concentration is high,and the average northward flow velocity in the region between 79.41°n and 86.32°n was 5.1 cm/s;(2)the average surface velocity of the chukchi Slope Current was 13.5 cm/s,and while this current moves westward along the continental slope,it also extends northwestward across the continental slope and flows to the deep sea;and(3)when sea ice concentration was less than 50%,the inertial flow was more significant(the maximum observed inertial flow was 26 cm/s,and the radius of the inertia circle was 3.6 km).

关键词： ch.nese national Arctic Research Expedition(ch.nARE) surface drifting buoy transpolar drift chukchi Slope Current inertial flow

Ischemia-reperfusion injury:molecular mech.nisms and therapeutic targets

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Signal Transduction and Targeted Therapy 2024年第2期9卷 558-596页

作者： Meng Zhang Qian Liu Hui Meng hongxia Duan Xin Liu Jian Wu Fei Gao Shijun Wang Rubin Tan Jinxiang Yuan The Collaborative Innovation Center Jining Medical UniversityJiningShandong 272067China Clinical Medical College Jining Medical UniversityJiningShandong 272067China Second Clinical Medical College Jining Medical UniversityJiningShandong 272067China Shanghai Institute of Cardiovascular Diseases Zhongshan Hospital and Institutes of Biomedical SciencesFudan UniversityShanghaiChina Institute of Zoology Chinese Academy of SciencesBeijingChina Department of Physiology Basic medical schoolXuzhou Medical UniversityXuzhou 221004China

Ischemia-reperfusion(I/R)injury paradoxically occurs during reperfusion following ischemia,exacerbating the initial tissue *** limited understanding of the intricate mech.nisms underlying I/R injury hinders the development of effective therapeutic *** Wnt signaling pathway exhibits extensive crosstalk with various other pathways,forming a network system of signaling pathways involved in I/R *** review article elucidates the underlying mech.nisms involved in Wnt signaling,as well as the complex interplay between Wnt and other pathways,including notch,phosphatidylinositol 3-kinase/protein kinase B,transforming growth factor-β,nuclear factor kappa,bone morphogenetic protein,n-methyl-D-aspartic acid receptor-Ca2+-Activin A,Hippo-Yes-associated protein,toll-like receptor 4/toll-interleukine-1 receptor domain-containing adapter-inducing interferon-β,and hepatocyte growth factor/mesenchymal-epithelial transition *** particular,we delve into their respective contributions to key pathological processes,including apoptosis,the inflammatory response,oxidative stress,extracellular matrix remodeling,angiogenesis,cell hypertrophy,fibrosis,ferroptosis,neurogenesis,and blood-brain barrier damage during I/R *** comprehensive analysis of the mech.nisms involved in Wnt signaling during I/R reveals that activation of the canonical Wnt pathway promotes organ recovery,while activation of the non-canonical Wnt pathways exacerbates ***,we explore novel therapeutic approaches based on these mech.nistic findings,incorporating evidence from animal experiments,current standards,and clinical *** objective of this review is to provide deeper insights into the roles of Wnt and its crosstalk signaling pathways in I/R-mediated processes and organ dysfunction,to facilitate the development of innovative therapeutic agents for I/R injury.

关键词： therapeutic reperfusion damage

Defect-induced synthesis of nanoscale hierarchically porous metal-organic frameworks with tunable porosity for enhanced volatile organic compound adsorption

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nano Materials Science 2024年第4期6卷 467-474页

作者： Kuan Liang Weibiao Guo Linmei Li Huidong Cai Haiqi Zhang Jingjing Li Feng Xu Jian Yan Daofei Lv hongxia Xi ch.ngxiong Duan Guangdong Provincial Key Laboratory of Intelligent Food Manufacturing Foshan University School of Materials Science and Hydrogen Engineering Foshan University School of chemistry and chemical Engineering South China University of Technology School of Environmental and chemical Engineering Foshan University

nanoscale hierarchically porous metal-organic frameworks （nH-MOFs） synergistically combine the advantages of nanoscale MOFs and hierarchically porous MOFs,resulting in remarkable characteristics such as increased specific surface area,greater porosity,and enhanced exposure of active ***,nanoscale hierarchically porous UIO-66 （UIO-66＿X） was synthesized using a defect-induced strategy that employed ethylene diamine tetraacetic acid （EDTA） as a *** introduced EDTA occupies the coordination sites of organic ligands,promoting the formation and growth of UIO-66 crystal nuclei and inducing defects during *** as-synthesized UIO-66＿X crystals exhibit a uniform distribution with an average size of approximately 100 *** addition,the total pore volume attains a remarkable value of 0.95 cm3g-1,with mesopores constituting 36.8%of the ***,the porosities of UIO-66＿X can be easily tuned by controlling the molar ratio of EDTA/Zr4+.In addition,the as-synthesized UIO-66＿X exhibits excellent adsorption capacities for n-hexane (344 mg g-1) and pxylene (218 mg g-1),which are 44.5%and 27.5%higher than those of conventional UIO-66,***,the adsorption behavior of n-hexane and p-xylene molecules in UIO-66＿X was investigated using density functional theory simulations.

关键词： nanoscale hierarchically porous MOFs Tunable porosities Enhanced VOC adsorption

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多尺度特征融合的铁轨异物入侵检测研究

西安交通大学学报 2024年第9期58卷 139-153页

作者：王楠侯涛牛宏侠兰州交通大学自动化与电气工程学院兰州730070

针对铁路轨道异物检测中不同尺度异物目标的检测易受复杂环境的影响,导致出现检测精度低及检测速度慢等问题,提出一种多尺度特征融合的铁轨异物检测(RMF-YOLO)算法。首先,设计并引入改进的卷积注意力模块(ICBAM),结合YOLOv7特征提取网络... 详细信息

针对铁路轨道异物检测中不同尺度异物目标的检测易受复杂环境的影响,导致出现检测精度低及检测速度慢等问题,提出一种多尺度特征融合的铁轨异物检测(RMF-YOLO)算法。首先,设计并引入改进的卷积注意力模块(ICBAM),结合YOLOv7特征提取网络,以增强复杂场景下的特征提取能力。其次,在所有高效层聚合网络模块中采用GhostConv替代普通卷积层,以降低计算复杂度,提高特征输出效率;设计一种改进的加权双向特征金字塔网络n-BiFPn结构,加强多尺度特征融合能力,平衡不同层级特征信息,提高多尺度检测能力。最后,为进一步提升检测精度,采用WIoU损失函数结合动态非单调聚集机制,有效应对低质量锚框产生的梯度,提高模型对不同尺度异物检测的整体性能。实验结果表明:在自制的铁轨异物数据集上,RMF-YOLO算法减少了原网络模型的参数量,有效提升了模型的检测精度与检测速度,改善了漏检与误检问题,平均精度提升了5.5%,检测速度提升了5.88%,计算量减少了12.25%,能满足铁轨入侵异物检测中对检测精度和实时性的需求。

关键词：铁轨异物检测特征融合多尺度 YOLOv7 损失函数