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Trunk‑Inspired SWCNT‑Based Wrinkled Films for Highly‑Stretchable Electromagnetic Interference Shielding and Wearable Thermotherapy

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Nano-Micro Letters 2024年第11期16卷 429-444页

作者： Xiaofeng gong Tianjiao Hu You Zhang Yanan Zeng Ye Zhang zhenhua Jiang Yinlong Tan Yanhong Zou Jing wang Jiayu Dai Zengyong Chu College of Science National University of Defense TechnologyChangsha 410073People’s Republic of China Beijing Interdisciplinary Research Center National University of Defense TechnologyChangsha 410073People’s Republic of China School of Physics and Electronics Hunan UniversityChangsha 410082People’s Republic of China

Nowadays,the increasing electromagnetic waves generated by wearable devices are becoming an emerging issue for human health,so stretchable electromagnetic interference(EMI)shielding materials are highly *** trunks are capable of grabbing fragile vegetation and tearing trees thanks not only to their muscles but also to their folded *** by the wrinkled skin of the elephant trunks,herein,we propose a winkled conductive film based on single-walled carbon nanotubes(SWCNTs)for multifunctional EMI *** conductive film has a sandwich structure,which was prepared by coating SWCNTs on both sides of the stretched elastic latex cylindrical *** shrinking-induced winkled conductive network could withstand up to 200%tensile ***,when the stretching direction is parallel to the polarization direction of the electric field,the total EMI shielding effectiveness could surprisingly increase from 38.4 to 52.7 dB at 200%tensile *** is mainly contributed by the increased connection of the *** addition,the film also has good Joule heating performance at several voltages,capable of releasing pains in injured *** unique property makes it possible for strain-adjustable multifunctional EMI shielding and wearable thermotherapy applications.

关键词： Electromagnetic interference shielding Single-walled carbon nanotubes Wrinkles Stretchable Thermotherapy

Mechanical robust and self-healing flexible perovskite solar cells with efficiency exceeding 23%

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Science China Chemistry 2024年第8期67卷 2670-2678页

作者： Yaohua wang Ruikun Cao Yuanyuan Meng Bin Han Ruijia Tian Xiaoyi Lu zhenhua Song Shuncheng Yang Congda Lu Chang Liu Ziyi ge College of Mechanical Engineering Zhejiang University of TechnologyHangzhou 310014China Zhejiang Provincial Engineering Research Center of Energy Optoelectronic Materials and Devices Ningbo Institute of Materials TechnologyEngineeringChinese Academy of SciencesNingbo 315201China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing 100049China

Flexible perovskite solar cells(f-PSCs) have experienced rapid advancements due to the light-weight, flexibility, and solution processability of the perovskite materials, which prompted the power conversion efficiency(PCE) to 24.08%. However, f-PSCs still face challenges in terms of mechanical and environmental stability. This is primarily due to their inherent brittleness, the presence of residual tensile strain, and the high density of defects along the boundaries of perovskite grains. To this end, we carefully developed a cross-linkable elastomers 3-[(3-acrylamidopropyl)dimethylammonium] propanoate(ADP) with electrostatic dynamic bond, which could be in-situ cross-linked and coordinate with [Pb I6]4-to regulate the crystallization process of perovskite. The cross-linked elastomers attached to the perovskite grain boundaries could release the remaining tensile strains and mechanical stresses, leading to enhanced stability and flexibility of the f-PSCs. More importantly, the electrostatic interaction between positive and negative groups of cross-linked elastomers and hydrogen bond formation between N–H and C=O accelerate the cross-linking of ADP, endowing the flexible perovskite films with self-healing ability under mild treating conditions(60 °C for 30 min). As a result, the device achieves a remarkable PCE of 23.53%(certified 23.16%). Additionally, the device exhibits impressive mechanical sustainability and durability, retaining over 90% of initial PCE even after undergoing8,000 bending cycles.

关键词： Mechanical robust and self-healing flexible perovskite solar cells with efficiency exceeding 23

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Fibroblast growth factor 21 inhibits ferroptosis following spinal cord injury by regulating heme oxygenase-1

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Neural Regeneration Research 2024年第7期19卷 1568-1574页

作者： Qi gu Weiping Sha Qun Huang Jin wang Yi Zhu Tianli Xu zhenhua Xu Qiancheng Zhu Jianfei ge Shoujin Tian Xiaolong Lin Department of Orthopaedic Surgery Zhangjiagang Hospital Affiliated to Soochow UniversitySuzhouJiangsu ProvinceChina Orthopedics Laboratory The First People’s Hospital of Zhangjiagang CitySuzhouJiangsu ProvinceChina Department of Anesthesiology Zhangjiagang Hospital Affiliated to Soochow UniversitySuzhouJiangsu ProvinceChina

Interfering with the ferroptosis pathway is a new strategy for the treatment of spinal cord *** growth factor 21 can inhibit ferro ptosis and promote neurofunctional recovery,while heme oxygenase-1 is a regulator of iron and reactive oxygen species *** relationship between heme oxygenase-1and ferroptosis remains controve *** this study,we used a spinal co rd injury rat model to show that the levels of fibroblast growth factor 21 in spinal co rd tissue decreased after spinal cord *** addition,there was a significant aggravation of ferroptosis and a rapid increase in heme oxygenase-1 expression after spinal cord *** r,heme oxygenase-1 aggravated fe rroptosis after spinal cord injury,while fibroblast growth factor 21 inhibited fe rroptosis by downregulating heme ***,the activation of fibroblast growth factor 21 may provide a potential treatment for spinal co rd *** findings could provide a new potential mechanistic explanation for fibroblast growth factor 21 in the treatment of spinal cord injury.

关键词： ferroptosis fibroblast growth factor 21 functional recovery heme oxygenase-1 lipid peroxidation neuron reactive oxygen species spinal cord injury

Cation effects in electrocatalytic reduction reactions:Recent advances

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Chinese Journal of Catalysis 2024年第8期63卷 16-32页

作者： Qinghui Ren Liang Xu Mengyu Lv Zhiyuan Zhang zhenhua Li Mingfei Shao Xue Duan State Key Laboratory of Chemical Resource Engineering College of ChemistryBeijing University of Chemical TechnologyBeijing 100029China College of Chemical Engineering Beijing University of Chemical TechnologyBeijing 100029China Quzhou Institute for Innovation in Resource Chemical Engineering Quzhou 324000ZhejiangChina

Electrocatalytic reduction reactions,powered by clean energy sources such as solar energy and wind,offer a sustainable method for converting inexpensive feedstocks(e.g.,CO_(2),N2/NOx,organics,and O_(2))into high-value-added chemicals or *** design and modification of electrocatalysts have been widely implemented to improve their performance in these ***,bottle-necks are encountered,making it challenging to further improve performance through catalyst development ***,cations in the electrolyte have emerged as critical factors for tuning both the activity and product selectivity of reduction *** review summarizes recent advances in understanding the role of cation effects in electrocatalytic reduction ***,we introduce the mechanisms underlying cation *** then provide a comprehensive overview of their application in electroreduction *** techniques and theoretical calcula-tion methods for studying cation effects are also ***,we address remaining challeng-es and future perspectives in this *** hope that this review offers fundamental insights and design guidance for utilizing cation effects,thereby advancing their development.

关键词： Electrocatalysis Reduction reaction Cation effect Mechanism Application

Vacancy healing for stable perovskite solar cells via bifunctional potassium tartrate

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Journal of Energy Chemistry 2024年第1期88卷 64-70,I0002页

作者： Jing Dou Yue Ma Xiuxiu Niu Wentao Zhou Xueyuan Wei Jie Dou zhenhua Cui Qizhen Song Tinglu Song Huanping Zhou Cheng Zhu Yang Bai Qi Chen Experimental Centre for Advanced Materials School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Beijing Key Laboratory for Theory and Technology of Advanced Battery Materials Key Laboratory of Polymer Chemistry and Physics of Ministry of EducationBIC-ESATSchool of Materials Science and EngineeringPeking UniversityBeijing 100871China

Perovskite solar cell has gained widespread attention as a promising technology for renewable ***, their commercial viability has been hampered by their long-term stability and potential Pb leakage. Herein, we demonstrate a bifunctional passivator of the potassium tartrate(PT) to address both challenges. PT minimizes the Pb leakage in perovskites and also heals cationic vacancy defects, resulting in improved device performance and stability. Benefiting from PT modification, the power conversion efficiency(PCE) is improved to 23.26% and the Pb leakage in unencapsulated films is significantly reduced to 9.79 ppm. Furthermore, the corresponding device exhibits no significant decay in PCE after tracking at the maximum power point(MPP) for 2000 h under illumination(LED source, 100 mW cm^(-2)).

关键词： Perovskite Potassium tartrate Lead leakage Long-term stability

Application of wastewater-based epidemiological monitoring of COVID-19 for disease surveillance in the city

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Frontiers of Environmental Science & Engineering 2024年第8期18卷 81-87页

作者： Heng Chen zhenhua Chen Liwen Hu Fengzhu Tang Dan Kuang Jiayi Han Yao wang Xiao Zhang Yue Cheng Jiantong Meng Rong Lu Lan Zhang Chengdu Workstation for Emerging Infectious Disease Control and Prevention Chinese Academy of Medical SciencesChengdu 610047China Chengdu Center for Disease Control and Prevention Chengdu 610047China National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases Beijing 100050China National Institute of Environmental Health Chinese Center for Disease Control and PreventionBeijing 100050China

wastewater-based surveillance serves as a supplementary approach to clinical surveillance of COVID-19 during the *** study aimed to track the prevalence of the disease and the viral genetic variability through wastewater-based surveillance in the post-epidemic *** January to December 2023,samples were collected from the influent lines of two wastewater treatment plants(WWTPs),concentrated using PEg8000,and subjected to detection of the target genes ORF 1ab and N of SARS-CoV-2 via reverse transcriptional quantitative PCR(RT-qPCR).For next-generation sequencing(NgS),high-quality samples from both wastewater and clinical patients were *** analysis were performed using R software to evaluate the correlation between the SARSCoV-2 RNA concentrations in wastewater and positive rate of reported cases,indicating a positive *** diversity patterns of SARS-CoV-2 in wastewater resembled those in the patient source based on Principal Coordinates Analysis(PCoA)with three clusters for different *** rise of RNA concentration in wastewater indicates the growth of cases and the emergence of new variants,serving as an early warning of potential viral mutations,disease outbreaks even possible ***,the genomic surveillance of wastewater could help identify new variants that may not be captured through population monitoring,especially when sample sizes are ***,surveillance of SARS-CoV-2 in municipal wastewater has emerged as a reliable,earlywarning monitoring system for COVID-19 in the post-epidemic era.

关键词： wastewater-based epidemiology Monitoring COVID-19 Post-epidemic era

Conservation and Renewal Strategies of Industrial Heritage Residential Areas from the Perspective of Heritage Protection : A Case Study of Residential Area of Wuchang Vehicle Factory

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Meteorological and Environmental Research 2024年第3期15卷 49-52,59页

作者： Qiaoying ZHANg zhenhua ZHU Wuhan Institute of Technology Wuhan 430205China

The residential area of Wuchang Vehicle Factory is taken as a case to explore the protection and renewal strategies of industrial heritage residential *** analyzing the current situation of the residential area,issues such as functional decline,memory loss,and weakened community vitality are *** design concepts are proposed:building renovation,historical space renovation,and the introduction of cultural and creative industries,aiming to improve the living environment,showcase historical value,cultivate cultural and creative industries,promote economic transformation,and community *** paper could provide reference for the protection and renewal of similar industrial heritage residential areas,and new ideas for the research and utilization of industrial *** comprehensively considering heritage protection,cultural inheritance,and community development,systematic suggestions are proposed.

关键词： Heritage protection Industrial heritage residential areas Conservation and renewal strategy

The earliest evidence for a microblade adaptation in the remote,high altitude regions of the Tibetan Plateau

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Science China Earth Sciences 2024年第5期67卷 1561-1573页

作者： Yingshuai JIN Xiaoling ZHANg Shejiang waNg Junyi gE Wei HE wa DA Yunyao TAN Ziyi YANg Christopher MORgAN Xing gAO Institute of Vertebrate Paleontology and Paleoanthropology Chinese Academy of SciencesBeijing 100044China University of the Chinese Academy of Sciences Beijing 100049China Cultural Relics Conservation Institute of the Xizang Autonomous Region Lhasa 850000China Nagqu Culture and Tourism Bureau Nagqu 852000China University of Nevada Reno 89557USA

Microblade assemblages are among the most common prehistoric archaeological materials found on the Tibetan Plateau(TP)and are thought to indicate large scale migration to and settlement of the *** microblade sites,however,have been systematically excavated,especially in the remotest,highest-elevation regions of the *** timing of the large-scale arrival,spread,and permanent settlement of people on the TP therefore remains *** this paper,we report on a recently excavated site,Locality 3 of the Nwya Devu Site(ND3),located at 4600 meters above sea level(masl),near the shore of Ngoin Lake,on the interior *** analyses reveal a fairly typical microblade technological orientation and two types of microblade cores:wedge-shaped and semi-conical,which are similar to those found throughout North *** Optically Stimulated Luminescence(OSL)dating and AMS^(14)C dating,the age of ND3 ranges from 11 to 10 *** date range indicates ND3 is the oldest microblade site yet recorded in the remote,high-elevation regions of the TP and thus provides important information about when and how hunter-gatherers using microblades began exploiting the higher altitudes of the *** together,studies at ND3 and throughout the TP suggest that a microblade adaptation is associated with the first prolonged human occupation of the plateau and that microblades played a significant role in mediating the risks and facilitating the mobility necessary to permanently inhabit the TP.

关键词： The interior of Tibetan Plateau Nwya Devu locality 3 Microblade Early Holocene High altitude adaption

Permeability and selectivity synergistically enhanced nanofluidic membrane for osmotic energy harvesting

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Carbon Energy 2024年第8期6卷 14-24页

作者： Jundong Zhong Tingting Xu Hongyan Qi Weibo Sun Shuang Zhao Zhe Zhao Yirong Sun Youliang Zhu Jianxin Mu Haibo Zhang Xuanbo Zhu zhenhua Jiang Lei Jiang National and Local Joint Engineering Laboratory for Synthetic Technology of High‐Performance Polymer Jilin UniversityChangchunJilinChina State Key Laboratory of Supramolecular Structure and Materials Jilin UniversityChangchunJilinChina Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education Jilin UniversityChangchunJilinChina CAS Key Laboratory of Bio‐inspired Materials and Interfacial Science Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijingChina

For the porous‐membrane‐based osmotic energy generator,the potential synergistic enhancement mechanism of various key parameters is still controversial,especially because optimizing the trade‐off between permeability and selectivity is still a ***,to construct a permeability and selectivity synergistically enhanced osmotic energy generator,the twodimensional porous membranes with tunable charge density are prepared by inserting sulfonated polyether sulfone into graphene *** of charge density and pore size on the ion transport are explored,and the ionic behaviors in the channel are calculated by numerical *** mechanism of ion transport in the process is studied in depth,and the fundamental principles of energy conversion are *** results demonstrate that charge density and pore size should be matched to construct the optimal ion *** collaborative enhancement strategy of permeability and selectivity has significantly improved the output power in osmotic energy generation;compared to the pure graphene oxide membrane,the composite membrane presents almost 20 times improvement.

关键词： blue energy generator charge tunable graphene oxide ion transport layered nanocomposites