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Chinese Journal of Chemical Engineering 2024年第4期68卷 76-82页

作者： Shaoyun Wu Zhuang Ma Zichi Yang Suying Zhao Caijin Zhou huidong Zheng Fujian Engineering Research Center of Advanced Manufacturing Technology for Fine Chemicals College of Chemical EngineeringFuzhou UniversityFuzhou 350108China Qingyuan Innovation Laboratory Quanzhou362114China

Micromixing efficiency is an important parameter for evaluating the multiphase mass transfer performance and reaction efficiency of *** this work,the novel curved capillary reactor with different shapes was designed to generate Dean flow,which was used to enhance the liquid-liquid micromixing *** Villermaux-Dushman probe reaction was employed to characterize the micromixing performance in different curved capillary *** effects of experiment parameters such as liquid flow rate,inner diameter,tube length,and curve diameter on micromixing performance were systematically *** the optimal conditions,the minimum value of the segmentation factor XS was *** was worth noting that at the low Reynolds number(Re<30),the change of curved shape on the capillary microreactor can significantly improve the micromixing performance with XS reduced by 37.5%.Further,the correlations of segment index XS with dimensionless factor such as Reynolds number or Dean number were developed,which can be used to predict the liquid-liquid micromixing performance in capillary microreactors.

关键词： Microreactor Process intensification Micromixing performance Dean flow

Coupled Cu doping and Z-scheme heterojunction for synergistically enhanced tetracycline photodegradation

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Nano Research 2024年第7期17卷 5937-5948页

作者： huidong Shen Chunming Yang Song Hong Leiduan Hao Liang Xu Alex W.Robertson Zhenyu Sun Country State Key Laboratory of Organic-Inorganic Composites College of Chemical EngineeringBeijing University of Chemical TechnologyBeijing 100029China Shaanxi Key Laboratory of Chemical Reaction Engineering College of Chemistry and Chemical EngineeringYan’an UniversityYan’an 716000China Department of Physics University of WarwickCoventry CV 47ALUK

Semiconductor-based photocatalysis by utilizing solar energy for sustainable organic pollutant elimination has been a promising tactic to alleviate environmental ***,the development of robust and efficient photocatalysts to degrade organic pollutants still faces major challenges because of insufficient charge *** we design and fabricate a heterojunction consisting of copper,carbon-modified TiO_(2),and sulfur-doped g-C_(3)N_(4)nanosheets(i.e.,S-C_(3)N_(4)/Cu/C-TiO_(2)).The heterostructure affords a remarkable synergistic photocatalysis for tetracycline hydrochloride degradation,achieving an 82.6%removal efficiency within 30 min under visible light irradiation,about 15.4 and 7.3 times higher than that of S-C_(3)N_(4)and C-TiO_(2),*** superior performance is attributed to the synergy between Cu doping and the Z-scheme heterojunction,which not only enhances the interfacial electric field effect,facilitating charge separation,but also boosts the redox *** charge carrier transfer between Cu/C-TiO_(2)and S-C_(3)N_(4)follows a Z-scheme,as verified by trapping experiments,electron spin-resonance spectroscopy,and density functional theory ***,the tetracycline hydrochloride degradation pathways are enunciated by liquid chromatograph mass spectrometry *** work provides an effective approach for constructing high-performance photocatalysts that have potential in environmental remediation.

关键词： photocatalysis Cu doping Z-scheme heterojunction electrons and holes separation tetracycline degradation

Efficient wide-bandgap perovskite solar cells with open-circuit voltage deficit below 0.4 V via hole-selective interface engineering

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Science China Chemistry 2024年第6期67卷 2102-2110页

作者： Xiaoyu Ji Shuo Zhang Furong Yu huidong Zhang Liqing Zhan Yue Hu Wei-Hong Zhu Yongzhen Wu Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering Shanghai Key Laboratory of Functional Materials ChemistryFrontiers Science Center for Materiobiology and Dynamic ChemistryInstitute of Fine ChemicalsSchool of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai200237China School of Chemistry University of EdinburghKing’s BuildingsEdinburghEH93FJUK

Wide-bandgap mixed-halide perovskite solar cells(WBG-PSCs)are promising top cells for efficient tandem photovoltaics to achieve high power conversion efficiency(PCE)at low ***,the open-circuit voltage(V_(OC))of WBG-PSCs is still unsatisfactory as the V_(OC)-deficit is generally larger than 0.45 ***,we report a buried interface engineering strategy that substantially improves the V_(OC)of WBG-PSCs by inserting amphiphilic molecular hole-selective materials featuring with a cyanovinyl phosphonic acid(CPA)anchoring group between the perovskite and *** assembly and redistribution of CPA-based amphiphilic molecules at the perovskite-substrate buried interface not only promotes the growth of a low-defect crystalline perovskite thin film,but also suppresses the photo-induced halide phase *** energy level alignment between wide-bandgap perovskite and the hole-selective layer is further improved by modulating the substituents on the triphenylamine donor moiety(methoxyls for MPA-CPA,methyls for Me PA-CPA,and bare TPA-CPA).Using a 1.68 e V bandgap perovskite,the Me PA-CPA-based devices achieved an unprecedentedly high V_(OC)of 1.29 V and PCE of 22.3%under standard AM 1.5 *** V_(OC)-deficit(<0.40 V)is the lowest value reported for *** work not only provides an effective approach to decreasing the V_(OC)-deficit of WBG-PSCs,but also confirms the importance of energy level alignment at the charge-selective layers in PSCs.

关键词： cyanovinyl phosphonic acid energy level alignment hole-selective material open-circuit voltage wide-bandgap perovskite

Multi-Scale Mixed Attention Tea Shoot Instance Segmentation Model

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Phyton-International Journal of Experimental Botany 2024年第2期93卷 261-275页

作者： Dongmei Chen Peipei Cao Lijie Yan huidong Chen Jia Lin Xin Li Lin Yuan Kaihua Wu School of Automation Hangzhou Dianzi UniversityHangzhou310018China Tea Research Institute Chinese Academy of Agriculture SciencesHangzhou310018China School of Information Engineering Zhejiang University of Water Resources and Electric PowerHangzhou310018China

Tea leaf picking is a crucial stage in tea production that directly influences the quality and value of the *** tea-picking machines may compromise the quality of the tea ***-quality teas are often handpicked and need more delicate operations in intelligent picking *** with traditional image processing techniques,deep learning models have stronger feature extraction capabilities,and better generalization and are more suitable for practical tea shoot ***,current research mostly focuses on shoot detection and cannot directly accomplish end-to-end shoot segmentation *** propose a tea shoot instance segmentation model based on multi-scale mixed attention(Mask2FusionNet)using a dataset from the tea garden in *** further analyzed the characteristics of the tea shoot dataset,where the proportion of small to medium-sized targets is 89.9%.Our algorithm is compared with several mainstream object segmentation algorithms,and the results demonstrate that our model achieves an accuracy of 82%in recognizing the tea shoots,showing a better performance compared to other *** ablation experiments,we found that ResNet50,PointRend strategy,and the Feature Pyramid Network(FPN)architecture can improve performance by 1.6%,1.4%,and 2.4%,*** experiments demonstrated that our proposed multi-scale and point selection strategy optimizes the feature extraction capability for overlapping small *** results indicate that the proposed Mask2FusionNet model can perform the shoot segmentation in unstructured environments,realizing the individual distinction of tea shoots,and complete extraction of the shoot edge contours with a segmentation accuracy of 82.0%.The research results can provide algorithmic support for the segmentation and intelligent harvesting of premium tea shoots at different scales.

关键词： Tea shoots attention mechanism multi-scale feature extraction instance segmentation deep learning

Beyond Conventional Degradation:Catalytic Solutions for Polyolefin Upcycling

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CCS Chemistry 2024年第2期6卷 313-333页

作者： Lan Gan Zhongwen Dong Haofeng Xu huidong Lv Guixia Liu Fan Zhang Zheng Huang State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai 200032 School of Chemistry and Material Sciences Hangzhou Institute of Advanced StudyHangzhou 310024 National Engineering Laboratory of Eco-Friendly Polymeric Materials(Sichuan) College of ChemistrySichuan UniversityChengdu 610064

Polyolefins(POs,i.e.,polyethylenes,ethylene/α-olefin copolymers,and polypropylenes)are the most ubiquitous synthetic macromolecular materials in modern *** widespread use and low recovery rate after extensive usage have caused significant resource waste and environmental *** recycling of POs provides an efficient approach to unravelling the polymer chain to various ***,conventional chemical recycling methods,including pyrolysis,hydrocracking,and oxidation,require high-energy input(typically>500℃)and/or the use of environmentally unfriendly chemicals,leading to complex product *** this minireview,based on recent representative works,we summarize and highlight catalytic strategies addressing these issues in PO recycling from two perspectives:(1)employing advanced catalysts or technique designs to overcome the challenges in conventional chemical deconstruction approaches;and(2)developing novel tandem/cascade catalytic systems for highly selective PO upcycling under relatively mild *** hope that this minireview will help researchers better understand the state of the art of PO chemical recycling and inspire more innovative and efficient ideas for this fast-developing field.

关键词： catalytic strategies chemical recycling deconstruction polyolefins upcycling

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 Chongxiong 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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中国共产党早期人物革命精神及其价值启示

马克思主义理论学科研究 2024年第8期10卷 84-93页

作者：吕惠东华中师范大学马克思主义学院湖北省人文社科重点研究基地湖北党的建设研究中心湖北武汉430079

中国共产党人的英雄事迹,是中国共产党革命精神的最好注解。在中国共产党创建及大革命时期,涌现了大量优秀的共产党人,他们在矢志完成民族独立、人民解放历史使命中,在理想信念、奋斗意志、品格风范等方面展现出了崇高的革命精神风范,... 详细信息

中国共产党人的英雄事迹,是中国共产党革命精神的最好注解。在中国共产党创建及大革命时期,涌现了大量优秀的共产党人,他们在矢志完成民族独立、人民解放历史使命中,在理想信念、奋斗意志、品格风范等方面展现出了崇高的革命精神风范,构成了中国共产党早期人物革命精神的生动图谱。中国共产党早期人物革命精神是伟大建党精神的生动体现,彰显了中国共产党人精神谱系的精神品格,推动了党领导革命事业的发展。学习弘扬中国共产党早期人物革命精神,对于新时代破解百年大党独有难题,坚守党的初心和使命,不断铸牢新时代党的建设新的伟大工程的精神根基具有重要意义。

关键词：早期共产党人革命精神价值启示

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基于整合疗法的认知障碍防治产品设计

包装工程 2024年第2期45卷 171-179页

作者：周君段辉栋南华大学湖南衡阳421001

目的针对老年痴呆的防治问题,为弥补单方面药物治疗的局限性,从设计康护的角度出发,探索性地提出整合疗法轻度认知障碍防治产品的创新设计策略。方法首先,对整合疗法理论进行溯源分析与价值挖掘,思考整合疗法中设计介入的方式,探究整... 详细信息

目的针对老年痴呆的防治问题,为弥补单方面药物治疗的局限性,从设计康护的角度出发,探索性地提出整合疗法轻度认知障碍防治产品的创新设计策略。方法首先,对整合疗法理论进行溯源分析与价值挖掘,思考整合疗法中设计介入的方式,探究整合疗法认知行为训练产品设计策略及原则;其次,采用SPSS数据分析软件进行量表数据处理和分析,对患者记忆、定向力、语言等关键指标进行量化比对,形成患者状态评价与病症考量依据,结合非药物治疗干预和药物治疗,协调患者兴趣及产品交互体验难度之间的平衡,围绕“养植养智”进行轻度认知障碍预防及治疗产品设计实证;最后对患者进行实验测试,采用CDR、MMSE量表积分对比,进行产品干预效度评估。结论整合疗法理念的融入能够协调患者在认知康复训练过程中难度与兴趣之间的平衡,可有效改善认知训练产品设计的效度,使患者既不产生抵触,又可在体验种植乐趣中实现养智。此设计为认知障碍防治产品设计提供了一个新的切入点。

关键词：认知障碍整合疗法认知训练产品设计

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基于杠杆放大机构的光纤光栅中高频地震检波器

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光电子．激光 2024年第6期35卷 561-569页

作者：王璐李辉栋乔学光西安石油大学理学院陕西西安710065 西北大学物理学院陕西西安710127

为解决在中高频地震信号勘探检测中,检波器存在的高固有频率与低灵敏度的矛盾,提出了一种基于杠杆放大机构的光纤光栅中高频地震检波器。在惯性质量块的一端链接杠杆放大机构,光纤光栅以两点式封装法竖直固定在杠杆的放大端与基底之上... 详细信息

为解决在中高频地震信号勘探检测中,检波器存在的高固有频率与低灵敏度的矛盾,提出了一种基于杠杆放大机构的光纤光栅中高频地震检波器。在惯性质量块的一端链接杠杆放大机构,光纤光栅以两点式封装法竖直固定在杠杆的放大端与基底之上。杠杆放大机构可以在检波器的输出端产生机械放大,增加光纤光栅的轴向应变,增大对地层中微弱中高频信号的响应,从而提高检波器的灵敏度。同时检波器的机械结构使用一体化加工工艺,可提高机械结构的刚度与稳定性。实验测试表明,该检波器的固有频率为526 Hz,在20—260 Hz的频率范围内,灵敏度为119.1084 pm/g,同时具有良好的横向抗干扰性能。这为中高频段载震检波器的研究提供了一定的技术思路和方向。

关键词：地震检波器光纤布拉格光栅(FBG) 杠杆放大机构高频高灵敏

原子尺度钼系加氢脱硫催化剂的研究进展与展望

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化工学报 2024年第5期75卷 1735-1749页

作者：丁禹杨昌泽李军孙会东商辉中国石油大学(北京)化学工程与环境学院北京102249 中国石油规划总院北京100083

深入探讨了原子尺度钼系加氢脱硫催化剂在加氢脱硫反应中的研究进展。重点关注了MoS_(2)和Co(Ni)MoS微观结构对催化性能的影响,以及活性氢原子生成、硫化条件对催化剂结构和活性的影响。探讨了不同类型MoS_(2)和Co(Ni)MoS边缘结构与加... 详细信息

深入探讨了原子尺度钼系加氢脱硫催化剂在加氢脱硫反应中的研究进展。重点关注了MoS_(2)和Co(Ni)MoS微观结构对催化性能的影响,以及活性氢原子生成、硫化条件对催化剂结构和活性的影响。探讨了不同类型MoS_(2)和Co(Ni)MoS边缘结构与加氢脱硫性能的构效关系,强调了MoS_(2)边缘的硫-氢基团在反应中的关键作用。此外,详细讨论了噻吩分子在催化剂表面的吸附方式,加深了对噻吩的加氢脱硫机理的了解。最后,强调了载体Al_(2)O_(3)表面氢溢流效应的重要性,通过调控氧化铝载体表面的羟基基团与钼酸根的相互作用,提高了催化活性。总体而言,这些研究结果突显了微观结构在催化活性调控中的关键作用,为提高工业加氢脱硫反应速率提供了有力的支持。

关键词：加氢脱硫催化剂催化剂载体密度泛函理论二硫化钼