检索结果-南通市图书馆

Multifunctional Reduced Graphene Oxide Hydrogel as Drug Carrier for Localized and Synergic Photothermal/Photodynamics/Chemo Therapy

维普期刊数据库评论

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 & Technology 2016年第8期32卷 753-762页

作者： Guanru Chang Shikuo Li fangzhi huang Xiuzhen Zhang Yuhua Shen Anjian Xie School of Chemistry and Chemical Engineering Collaborative Innovation Center of Modern Bio-Manufacture Anhui University Hefei 230601 China School of Chemistry and Chemical Engineering Huangshan University Huangshan 245041 China

To combine localized drug release with multimodal therapy for malignant tumor, a composite hydrogel as an integrative drug delivery system was facilely prepared. The system contains spinach extract （SE）, reduced graphene oxide （rGO） and gold nanocages （AuNCs）. SE conduces to the formation of hydrogel, and also serves as a green material for improving the biocompatibility of hydrogel, and a natural pho- tosensitizer for killing tumor cells under laser radiation （fi60 nm）. AuNts show obvious photothermy and can enhance the generation of cytotoxic singlet oxygen （102）. The composite hydrogel shell on tumor cells exhibits several competitive advantages including enhanced antitumor effect by retaining the high con- centration of drugs around cancer cell, excellent PDT/FFr compatibility as well as high loading and controllable release of fluorouracil （5-FU） for synergetic multimodal treatment. The survival rate of HeLa cells incubated with 5-FU loaded hydrogel under NIR radiation for 10 min sharply decreases to 1.2%, in- dicating remarkably improved antitumor effects. These results demonstrate that the hydrogel is an excellent delivery carrier for localizable, NIR-responsive and combined PTT/PDT/Chemo synergetic antitumor.

关键词： Multimodal synergic therapy Au nanocages Spinach extract Natural photosensitizer Localized antitumor

Enhanced interfacial polarization of defective porous carbon confined CoP nanoparticles forming Mott-Schottky heterojunction for efficient electromagnetic wave absorption

在线全文

学校读者我要写书评

暂无评论

Nano Research 2023年第3期16卷 4160-4169页

作者： Baojun Wang fangzhi huang Hao Wu Zijie Xu Shipeng Wang Qinghua Han Fenghua Liu Shikuo Li Hui Zhang School of Materials Science and Engineering Anhui UniversityHefei 230601China School of Chemistry and Chemical Engineering Anhui UniversityHefei 230601China Ningbo Institute of Materials Technology and Engineering Chinese Academy of ScienceNingbo 315201China Key Laboratory of Structure and Functional Regulation of Hybrid Materials(Anhui University) Ministry of EducationHefei 230601China

Integrating heterogeneous interface through nanostructure design and interfacial modification is essential to realize strengthened interfacial polarization relaxation in electromagnetic wave ***,an in-depth comprehension of the interfacial polarization behavior at hetero-junction/interface is highly desired but remains a great ***,a Mott-Schottky heterojunction consisting of honeycomb-like porous N-doped carbon confined CoP nanoparticles(CoP@HNC)is designed to elevate the interfacial polarization ***,corresponding electron migration and redistribution between the heterointerface of defective carbon and CoP nanoparticles are *** significant difference in the work function on both sides of heterogeneous interface boosts the interfacial polarization in high frequency ***,the relevant spectroscopic characterizations demonstrate that electron spontaneously migrates from CoP to N-doped carbon at the heterointerface,thereby contributing to the accumulation of electron on defective carbon side and the distribution of hole on CoP ***,benefitting from the synergistic effects of three-dimensional porous conductive carbon skeleton,foreign N heteroatoms,special CoP nanoparticles,and the resultant CoP/N-doped carbon Mott-Schottky heterojunction,the CoP@HNC exhibits remarkable electromagnetic wave absorption performances with minimum reflection loss up to−60.8 dB and the maximum effective absorption bandwidth of 4.96 GHz,which is superior to most of recently reported transition metal phosphides microwave absorbing *** present work opens a new avenue for designing heterogeneous interface to realize strengthened microwave absorption capability and also reveals the in-depth influence of interface structure on electromagnetic wave absorption.

关键词： honeycomb-like structure Mott-Schottky heterojunction interfacial polarization electron transfer microwave absorption

Promoting the microwave absorption performance of hierarchical CF@NiO/Ni composites via phase and morphology evolution

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2023年第3期30卷 494-503页

作者： Shipeng Wang Ziyan Liu Qiangchun Liu Baojun Wang Wei Wei Hao Wu Zijie Xu Shikuo Li fangzhi huang Hui Zhang School of Materials Science and Engineering Anhui UniversityHefei 230601China Key Laboratory of Structure and Functional Regulation of Hybrid Materials Ministry of EducationAnhui UniversityHefei 230601China School of Chemistry and Chemical Engineering Anhui UniversityHefei 230601China School of Physics and Electronic Information Huaibei Normal UniversityHuaibei 235000Chin

Lightweight and efficient carbon-based microwave absorbents are significant in addressing the increasing severity of electromagnetic *** this study,hierarchical NiO/Ni nanosheets with a tuneable phase and morphology supported on a carbon fiber substrate(CF@NiO/Ni)were fabricated using a hydrothermal approach and post-annealing *** the annealing temperature increases,more metallic Ni is formed,and an apparent porosity appears on the sheet *** from the advantages of a three-dimensional(3D)conducting network,hierarchical porous structure,reinforced dipole/interface polarization,multiple scattering,and good impedance matching,the CF@NiO/Ni-500 composite exhibits an excellent microwave absorption performance even at a filling rate of only 3wt%.Specifically,its minimal reflection loss is-43.92 dB,and the qualified bandwidth is up to 5.64 *** addition,the low radar cross-section area of the CF@NiO/Ni composite coating confirms its strong ability to suppress electromagnetic wave *** expect that this work could contribute to a deeper understanding of the phase and morphology evolution in enhancing microwave absorption.

关键词： carbon fiber nickel nickel oxide interfacial polarization microwave absorption

Engineering the heterogeneous interfaces of inverse opals to boost charge transfer for efficient solar water splitting

在线全文

学校读者我要写书评

暂无评论

Science China Materials 2022年第1期65卷 124-130页

作者： Miaomiao Zhang Pianpian Liu Hao Tan Hui Zhang fangzhi huang Kun Zhang Shikuo Li Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials Key Laboratory of Structure and Functional Regulation of Hybrid Materials(Anhui University)Ministry of EducationSchool of Chemistry and Chemical EngineeringInstitute of Physical Science and Information TechnologyAnhui UniversityHefei 230601China National Synchrotron Radiation Laboratory University of Science and Technology of ChinaHefei 230029China Bengbu Institute of Product Quality Supervision and Inspection Research Bengbu 233040China

Herein,we report a three-dimensional porous TiO_(2)/Fe_(2)TiO_(5)/Fe_(2)O_(3)(TFF)inverse opal through in situ thermal solid reactions for photoelectrochemical water *** Fe_(2)TiO_(5) interfacial layer within TFF acting as a bridge to tightly connect to TiO_(2) and Fe_(2)O_(3) reduces the interfacial charge transfer resistance,and suppresses the bulk carrier *** optimized TFF displays a remarkable photocurrent density of 0.54mAcm^(-2) at 1.23V *** hydrogen electrode(RHE),which is 25 times higher than that of TiO_(2)/Fe_(2)O_(3)(TF)inverse opal(0.02mAcm^(-2) at 1.23V ***).The charge transfer rate in TFF inverse opal is 2-8 times higher than that of TF in the potential range of 0.7-1.5V *** effects of the Fe_(2)TiO_(5) interfacial layer are further revealed by X-ray absorption spectroscopy and intensity-modulated photocurrent *** work offers an interfacial engineering protocol to improve charge separation and transfer for efficient solar water splitting.

关键词： interfacial engineering heterojunction transfer resistance inverse opal solar water splitting

金纳米棒调控组装结构SERS基底用于构筑毒品检测模块

在线全文

学校读者我要写书评

暂无评论

光散射学报 2018年第1期30卷 17-23页

作者：陈诚解启文黄方志杨良保安徽大学化学化工学院合肥230039 中国科学院合肥智能机械研究所合肥230031 安徽省公安厅物证鉴定中心合肥230061

本文介绍了一种基于金纳米棒自组装结构的SERS基底构筑方法。通过工艺参数可调控的溶剂蒸发诱导组装机制,可以减少或去除溶胶成膜基底中出现的咖啡环效应,得到致密均一的薄膜型SERS基底。该基底用于毒品SERS检测具有较高的灵敏性和较好... 详细信息

本文介绍了一种基于金纳米棒自组装结构的SERS基底构筑方法。通过工艺参数可调控的溶剂蒸发诱导组装机制,可以减少或去除溶胶成膜基底中出现的咖啡环效应,得到致密均一的薄膜型SERS基底。该基底用于毒品SERS检测具有较高的灵敏性和较好的重现性,将其与便携式拉曼光谱仪和含毒品尿液的快速前处理方法相结合,可以用于涉毒人员尿液中毒品的检测分析,因此有望应用于涉毒现场的快速检测。

关键词：表面增强拉曼光谱金纳米棒自组装基底毒品检测

Hg-MOFs纳米材料的制备及其光催化制氢性能研究

在线全文

学校读者我要写书评

暂无评论

安庆师范大学学报（自然科学版） 2019年第2期25卷 95-98页

作者：金蓓蓓崔慧慧汪琳王华强黄锟黄方志安徽大学化学化工学院

以乙酸汞(C4H6HgO4)为汞源,以异烟酸(C6H5NO2)、2,2,-联苯二羧酸(C14H10O4)和对苯二甲酸(C8H6O4)为配体,通过溶剂热法合成了金属-有机骨架(Hg-MOFs)纳米材料,考察了光催化制氢性能。XRD、SEM、FT-IR测试结果显示合成得到了八面体结构的H... 详细信息

以乙酸汞(C4H6HgO4)为汞源,以异烟酸(C6H5NO2)、2,2,-联苯二羧酸(C14H10O4)和对苯二甲酸(C8H6O4)为配体,通过溶剂热法合成了金属-有机骨架(Hg-MOFs)纳米材料,考察了光催化制氢性能。XRD、SEM、FT-IR测试结果显示合成得到了八面体结构的Hg-INA金属-有机骨架材料、花束状的Hg-BDA金属-有机骨架材料和Hg-DB金属-有机骨架微球。3种Hg-MOFs都具有一定的光催化制氢性能,其中,Hg-INA的光催化制氢性能最佳,达到了30μmol/(g·h),具有一定的理论与应用价值。

关键词：金属-有机骨架 Hg-MOFs 光催化光解水制氢

化学变脸之神奇的超浸润——推荐一个化学科普实验

在线全文

学校读者我要写书评

暂无评论

大学化学 2020年第11期35卷 202-208页

作者：黄方志张丽娜李士阔吴涛汪琳安徽大学化学化工学院合肥230601

自然界中有一类神奇的超浸润,如荷叶上水珠和水黾轻功“水上漂”等,这是材料表面特异的微纳超级结构和活性物质所致。效法自然,合成了两种超浸润界面剂和一种开关型的Cu(OH)2@ZIF-8纳米网膜。从自然植物–日常应用–科技发展,由浅入深,... 详细信息

自然界中有一类神奇的超浸润,如荷叶上水珠和水黾轻功“水上漂”等,这是材料表面特异的微纳超级结构和活性物质所致。效法自然,合成了两种超浸润界面剂和一种开关型的Cu(OH)2@ZIF-8纳米网膜。从自然植物–日常应用–科技发展,由浅入深,全方位地科普了神奇而又不乏科学趣味的自然现象(化学变脸),以激发青少年对于自然、科学的兴趣。

关键词：超浸润微纳结构开关型网膜荷叶

在线全文

学校读者我要写书评

暂无评论

研究性教学在材料科学综合实验中的实践

实验科学与技术 2015年第4期13卷 105-106,128页

作者：李士阔黄方志沈玉华谢安建安徽大学化学化工学院专业实验教学中心合肥230601

研究性教学是科研与教学的有机融合,是将科学的研究方法,前沿的科研动态及新颖的研究成果引入教学内容,是培养学生创新思维和创新能力的重要途径。通过将教师的科学研究与专业实验教学相结合,不断优化更新材料科学综合实验内容,改革传... 详细信息

研究性教学是科研与教学的有机融合,是将科学的研究方法,前沿的科研动态及新颖的研究成果引入教学内容,是培养学生创新思维和创新能力的重要途径。通过将教师的科学研究与专业实验教学相结合,不断优化更新材料科学综合实验内容,改革传统教学方法,形成专业办学特色。以学生为主体,以兴趣为驱动,以问题为导向,激发学生探究实验发生机制的好奇心,发挥学生自主学习的积极性与创造性,开展协同探究,为培养高素质专业创新人才打下坚实基础。

关键词：研究性教学综合实验创新能力实践

Weldability, microstructure and mechanical properties of laser-welded selective laser melted 304 stainless steel joints

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2019年第9期35卷 1817-1824页

作者： Jingjing Yang Yun Wang fangzhi Li Wenpu huang Guanyi Jing Zemin Wang Xiaoyan Zeng Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China Xi'an Space Engine Factory Xi'an710100China

Laser welding is a promising process for joining small components produced by selective laser melting (SLM) to fabricate the large-scale and complex-shaped parts. In the work, the morphology, microstructure, microhardness, tensile properties and corrosion resistance of the laser welded stress-relieved SLMed 304 stainless steel joints are investigated, as the different sections of stress-relieved SLMed 304 stainless steel are joined. Results show that the SLMed 304 stainless steel plates have a good laser weldability. The microstructure of laser-welded joints consists of the cellular dendrites in austenite matrix within columnar grains, exhibiting a coarser dendrite structure, lower microhardness (~220HV) and tensile properties (tensile strength of ~750 MPa, and area reduction of ~27.6%), but superior corrosion resistance to those of SLMed plates. The dendrite arm spacing of the joints varies from ~3.7μm in center zone, to ~5.0 (xm in fusion zone, to ~2.5 in epitaxial zone. The SLMed anisotropy shows a negligible effect on the microstructure and performance of the laser-welded joints. The laser welding along the building directions of the SLMed base plates can induce a slightly finer dendritic structure and higher tensile properties.

关键词： Selective laser melting Laser welding 304 stainless steel Anisotropy