检索结果-南通市图书馆

Conductive hydrogels incorporating carbon nanoparticles:A review of synthesis,performance and applications

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Particuology 2023年第12期83卷 212-231页

作者： Shipeng Zhang Bo Zhao Ding Zhang Mengdan Yang Xinguang Huang Lei Han Kun Chen Xinjian Li Rui Pang Yuanyuan Shang Anyuan Cao Key Laboratory of Material Physics Ministry of EducationSchool of Physics and MicroelectronicsZhengzhou UniversityZhengzhou450052China School of Materials Science and Engineering Peking UniversityBeijing100871China

As one of the most rapidly expanding materials,hydrogels have gained increasing attention in a variety of fields due to their biocompatibility,degradability and hydrophilic properties,as well as their remarkable adhesion and stretchability to adapt to different *** combined with carbon-based materials possess enhanced properties and new functionalities,in particular,conductive hydrogels have become a new area of research in the field of materials *** review aims to provide a comprehensive overview and up-to-date examination of recent developments in the synthesis,properties and applications of conductive hydrogels incorporating several typical carbon nanoparticles such as carbon nanotubes,graphene,carbon dots and carbon *** summarize key techniques and mechanisms for synthesizing various composite hydrogels with exceptional properties,and represented applications such as wearable sensors,temperature sensors,supercapacitors and human-computer interaction reported *** mechanical,electrical and sensing properties of carbon nanoparticles conductive hydrogels are thoroughly analyzed to disclose the role of carbon nanoparticles in these hydrogels and key factors in the ***,future development of conductive hydrogels based on carbon nanoparticles is discussed including the challenges and possible solutions in terms of microstructure optimization,mechanical and other properties,and promising applications in wearable electronics and multifunctional materials.

关键词： Conductive hydrogels carbon nanoparticles Synthesis Performance and applications

Multicolor Luminescent carbon nanoparticles： Synthesis, Supramolecular Assembly with Porphyrin, Intrinsic Peroxidase-Like Catalytic Activity and Applications

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2011年第9期4卷 908-920页

作者： Xiaohui Wang Konggang Qu Bailu Xu Jinsong Ren Xiaogang Qu Division of Biological Inorganic Chemistry State Key Laboratory of Rare Earth Resource Utilization Laboratory of Chemical Biology Changchun Institute Of Applied Chemistry Chinese Academy of Sciences Changchun Jilin 130022 China Graduate School of the Chinese Academy of Sciences Changchun Jilin 130022 China

Luminescent carbon nanoparticles （CNPs） are newcomers to the world of nanomaterials and have shown great impact in health and environmental applications as well as being promising building blocks for future nanodevices because of their fascinating photoluminescence and potential to serve as nontoxic replacements for traditional heavy-metals-based quantum dots. Herein, fluorescent CNPs have been prepared from candle soot by re fluxing with HNO3 and subsequently separated by a single centrifugation. The CNPs can be represented by the empirical formula C1Ho.677Oo.586No.o15Nao.069, and have a size of 20-100 nm, height of 3.0 nm, lifetime of 7.31 ns ＋ 0.06 ns and quantum yield of -1.7%. Further studies demonstrate that：（1）the as-prepared CNPs exhibit excellent stability in biological media and their luminescence intensity does not change with ionic strength or pH in the physiological and pathological range of pH 4.5-8.8; （2） CNPs can act as electron donors and transporters and porphyrin can assemble onto CNPs through electrostatic and ^-stacking interactions to form porphyrin-CNPs supramolecular composites; （3）CNPs have strong intrinsic peroxidase-like activity. Based on this intrinsic peroxidase activity, a simple, cheap, and highly selective and sensitive colorimetric and quantitative assay has been developed for the detection of glucose levels. This assay has been used to analyze real samples, such as diluted blood and fruit juice.

关键词： carbon nanoparticles luminescence supramolecular assembly peroxidase biosensing

Surface chemistry of carbon nanoparticles functionally select their uptake in various stages of cancer cells

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2017年第10期10卷 3269-3284页

作者： Indrajit Srivastava Santosh K. Misra Fatemeh Ostadhossein Enrique Daza Jasleena Singh Dipanjan Pan Department of Bioengineering University of Illinois Urbana-Champaign Urbana Illinois 61801 USA Biomedical Research Center Carle Foundation Hospital Urbana Illinois 61801 USA Department of Materials Science and Beckman Institute University of illinois Urbana-Champaign Urbana Illinois 61801 USA

Relationship of the surface physicochemical characteristics of nanoparticles with their interactions with biological entities may provide critical information for nanomedicinal application. Here, we report the systematic synthesis of sub-50 nm carbon nanoparticles （CNP） presenting neutral, anionic, and cationic surface functionalities. A subset of CNPs with -10, 20, and 40 nm hydrodynamic sizes were synthesized with neutral surface headgroups. For the first time, the cellular internalization of these CNPs was systematically quantified in various stages of breast cancer cells （early, late, and metastatic）, thereby providing a parametric assessment of charge and size effects. Distinct activities were observed when these systems interacted with cancer cells in various stages. Our results indicated that metastatic breast cancer could be targeted by a nanosystem presenting anionic phosphate groups. On the contrary, for patients in late stage of cancer, drugs could be delivered with sulfonate functionalized carbon nano- particles, which have higher probability of intracellular transport. This study will facilitate the better understanding of nanoparticle-biological entity interaction, and the integration of this knowledge with pathophysiology would promote the engineering of nanomedicine with superior likelihoods of crossing the endocytic ＂barrier＂ for drug delivery inside cancerous cells.

关键词： personalized medicine endocytosis surface charge size carbon nanoparticles

Stainless steel cloth modified by carbon nanoparticles of Chinese ink as scalable and high-performance anode in microbial fuel cell

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2021年第8期32卷 2499-2502页

作者： Haoliang Wu Hao Tan Luye Chen Bin Yang Yang Hou Lecheng Lei Zhongjian Li College of Chemical and Biological Engineering Key Laboratory of Biomass Chemical Engineering of Ministry of EducationZhejiang UniversityHangzhou 310027China Institute of Zhejiang University-Quzhou Quzhou 32400China

Microbial fuel cells(MFCs) have various potential ***,anode is a main bottleneck that limits electricity production performance of ***,we developed a novel anode based on a stainless steel cloth(SC) modified with carbon nanoparticles of Chinese ink(Cl) using polypyrrole(PPy)as a building block(PPy/Cl/SC).After modification,PPy/Cl/SC showed a 30% shorten in start-up time(36.4 ± 3.3 h vs.52.3± 1.8 h),33% increase in the maximum current(12.4 ± 1.4 mA vs.9.3± 0.95 mA),and2.3 times higher in the maximum power density of MFC(61.9 mW/m^(2) vs.27.3 mW/m^(2)),compared to Ppy/*** results revealed that carbon nanoparticles were able to cover SC uniformly,owing to excellent dispersibility of carbon nanoparticles in *** attachment of carbon nanoparticles formed a fluffy layer on SC increased the electrochemically-active surface area by 1.9 times to 44.5 cm^(2).This enhanced electron transfer between the electrode and ***,embedding carbon nanoparticles into the PPy layer significantly improved biocompatibility as well as changed functional group contents,which were bene ficial to bacteria adhesion on *** adva ntage of high mechanical strength and good conductivity,a large-size PPy/Cl/SC was successfully prepared(50×60 cm^(2))demonstrating a promising potential in practical *** simple fabrication strategy offers a new idea of developing low cost and scalable electrode materials for high-performance energy harvesting in MFCs.

关键词： Chinese ink Microbial fuel cell Stainless steel Polypyrrole carbon nanoparticles

Lymph Node Mapping with carbon nanoparticles and the Risk Factors of Lymph Node Metastasis in Gastric Cancer

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Journal of Huazhong University of Science and Technology(Medical Sciences) 2016年第6期36卷 865-870页

作者： Hui WANG Man-man CHEN Guang-sheng ZHU Mao-guang MA Han-song DU Yue-ping LONG Department of Gastrointestinal Surgery Department of Radiology Union Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430022 China

The study aimed to examine the applicability of carbon nanoparticles as a tracer for lymph node mapping and the related factors of lymph node and No.8p subgroup metastasis in patients with gastric *** data of 50 patients with gastric cancer,who had not received treatment preoperatively and underwent gastrectomy in Department of Gastrointestinal Surgery,Wuhan Union Hospital,between October 2014 and August 2015,were retrospectively *** patients were found to have no distant metastasis ***-five out of 50 patients were subjected to lymphatic mapping technique using carbon nanoparticles as the tracer,and the rest 15 cases did not experience the lymphatic mapping and served as *** sensitivity,specificity,false positive rate and false negative rate were calculated according to the number of lymph nodes,and the staining and metastasis condition of lymph *** diagnostic value of carbon nanoparticles on metastatic lymph nodes was *** relationship between the metastasis of lymph nodes or subgroup No.8p lymph nodes and clinicopathologic features was analyzed by χ^2-test or Fisher＇s exact *** patients underwent D2 surgery（lymph node dissection including all the group 1 and group 2 nodes） plus the dissection of the subgroup No.8p lymph *** was found that the average number of harvested lymph nodes in lymphatic mapping technique group（45.7±14.5） was greater than that in control group（39.2±11.7）,but the difference was not significantly different（P=0.138〉0.05）.The success rate,the accuracy,sensitivity,specificity and false negative rate was 97%,57%,28%,62% and 72% *** metastasis of lymph nodes was correlated to the depth of cancer invasion（T stage）（P=0.004〈0.05）,and the metastasis of No.8p lymph nodes was correlated to the extent of lymph node involvement（N stage）（P=0.007〈0.05）.Six cases had lymph node metastasis in subgroup No.8p,and their TNM stages and clinical stages were as follows：T1N2M0 ⅡA

关键词： stomach neoplasms lymph node metastasis carbon nanoparticles lymph node mapping No.8p lymph nodes

Ultrastructure and mechanical perturbation of pulmonary surfactants by inhaled carbon nanoparticles: a computer simulation study

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Ultrastructure and mechanical perturbation of pulmonary surf...

Synthesis and characterization of nanocarbon from waste batteries via an eco-friendly method

中国化学会-生物物理化学专业委员会第四届全国生物物理化学会议

作者：岳同涛黄方徐燕中国石油大学(华东)生物工程与技术中心

carbon nanoparticles(CNPs), such as graphene nanosheets(GNs), carbon nanotubes(CNTs) and carbon nanospheres(CNSs), have displayed extraordinary mechanical, electrical and thermal properties. They accordingly have potential applications in diverse fields from energy conservation to disease therapy. In parallel, there is a general biosafety concern for human exposure of CNPs. Since human lung is easily accessible for CNPs, the increasing exposure of CNPs is putting human lungs at high risk. During respiration, inhaled CNPs are first captured by the pulmonary surfactant(PS) and disrupt its ultrastructure and mechanical property. With the aid of computer simulation techniques, we have investigated the interaction between PS and CNPs. For GNs, their pulmonary adsorption was found to rigidify the PS and thus inhibit its mechanical function. The internalization is generally accomplished via PS shape transformation and GN self-rotation. For CNTs, five different interaction pathways were identified by varying the aspect ratio. They are vertical insertion, horizontal translocation, lipid extraction, vesicle encapsulation and endocytic internalization. Each pathway displays unique behavior for PS perturbation. For CNSs, their aggregation in PS was found to be size dependent and mediated by lipid extractions. Future studies will be carried out by combining simulations and in vitro experiments to thoroughly understand the inhalation toxicity of more general nanoparticles. We hope that our studies can provide guidelines for developing effective strategies against the adverse effects of inhaled CNPs.

关键词： carbon nanoparticles inhalation toxicity pulmonary surfactant computer simulation

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Waste Disposal and Sustainable Energy 2024年第2期6卷 197-208页

作者： Maraim Kh.Uoda Hussein Q.Hussein Rana R.Jalil Chemical Engineering Department College of EngineeringUniversity of BaghdadBaghdadIraq Thi.Qar Oil Company NassriyaIraq Petroleum Research and Development Center BaghdadIraq

The widespread use of disposable batteries to power common electronic devices is a major source of *** are growing environmental and health concerns due to the expansion of e-waste around the ***,developing a reli-able system for recycling old batteries has reached the top of the recycling priority *** current study presents a novel approach to synthesis carbon nanoparticles(CNPs)from spent batteries via an eco-friendly method that offers economical,environment-friendly,and nontoxic approaches in comparison to conventional chemical *** synthesized nano-particles were characterized by field emission scanning electron microscopy(FE-SEM),energy-dispersive X-ray(EDX),powder X-ray diffractometry(XRD),UV-VIS absorption analysis(UV),Fourier transform infrared spectroscopy(FT-IR),Atomic force microscope(AFM),and thermo-gravimetric analysis(TGA).The average diameter of the synthesized particles was 40.16 nm,and the particles tended to be aspherical in *** analysis also predicted the presence of pure carbon,with some contamination arrived at 15%(in weight).This is a novel study in which nanocarbons were synthesized in a brine(7600x10-6)from a target(CNPs>75 nm),which paves the way for future use of CNPs derived from spent batteries and helps the environment by decreasing the amount of electronic waste dumped in landfills.

关键词： Novel Zn-C battery carbon nanoparticles Characterization Eco-friendly methods

Application of flame-formed carbon nanoparticle films for ethanol sensing Author links open overlay panel

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Particuology 2024年第8期91卷 202-210页

作者： Pegah Darvehi Luca Basta Mario Commodo Patrizia Minutolo Andrea D'Anna Istituto di Scienze e Tecnologie per l’Energia e la MobilitàSostenibili Consiglio Nazionale delle RicercheP.le Tecchio 8080125NapoliItaly Dipartimento di Ingegneria Chimica dei Materiali e della Produzione IndustrialeUniversitàdegli Studi di Napoli Federico IIP.le Tecchio 8080125NapoliItaly

carbon nanoparticles(CNPs)have received considerable attention due to their exceptional qualities and *** unique physical and chemical characteristics make them extremely intriguing as materials for numerous high-potential applications,such as electronics and gas *** study focused on producing carbon-based nanomaterial devices by deposition of flame-formed carbon nanoparticles on a suitable substrate and investigating their gas-sensing *** were produced in a fuel-rich laminar premixed ethylene/air flame and the collected CNP film was morphologically and electrically *** electrical conductivity of the film was investigated as a function of ethanol concentration and amount of deposited ***,CNP films exhibited high sensitivity to ambient ethanol gas concentrations,and rapid recovery times at room temperature,and showed a sensitivity increasing with the amount of deposited material and the surface *** findings demonstrate the high potential of combustion-generated CNPs as building materials for low-cost and portable ethanol sensors.

关键词： Flame synthesis carbon nanoparticles Soot Nanostructured thin film Optical and electrical characterization Atomic force microscopy Sensors

Toxicological and Life-Cycle Perspectives on Waste-Derived nanoparticles

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Materials Science and Chemical Engineering 2024年第8期12卷 43-68页

作者： Irshad Ahmad Md Fahimul Hassan Weqar Ahmad Siddiqui Department of Applied Science & Humanities Faculty of Engineering & Technology Jamia Millia Islamia University New Delhi India Department of Chemistry C.M. Science College Lalit Narayan Mithila University Darbhanga India

Many nanoparticles have been created over the last few decades using a variety of techniques and used to develop environmental technology, including water treatment, the detection of persistent contaminants, and soil and water remediation. The studies of alternative inputs for nanoparticle production as well as the use of green synthesis techniques are driven by the field of materials science and engineering’s growing interest in increasing the sustainability of the processes involved in their production. In this paper, we begin by providing an overview of the fundamental principles of producing nanoparticles from different sources, such as plastic, electronic, metal, and industrial waste. We elaborate on key facts of waste identification as a workable input for the treatment and recovery of metal and carbon-based nanoparticles. We next go over several controlling factors that play a role in creating nanoparticles, pointing out probable conclusions as we go. Then, we show some instances of waste-derived nanoparticles used in a proof-of-concept experiment of technology for applications in water quality and safety. Before scaling up production and implementing waste-derived nanoparticles, there are several present problems from the toxicological and life-cycle perspectives that must be taken into account.

关键词： Industrial Waste Plastic Trash Metal Waste carbon nanoparticles Nanoparticle-Enabled Technologies Electronic-Waste