共查询到19条相似文献,搜索用时 93 毫秒
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石墨烯、氧化石墨烯和还原氧化石墨烯纳米片可以很容易地与各种类型的无机纳米颗粒(包括金属、金属氧化物、半导体纳米颗粒、量子点、有机聚合物和生物分子)结合,以创建各种各样的基于石墨烯的纳米复合材料,增强生物传感器应用的灵敏度。本文综述了石墨烯/纳米金复合材料作为新兴的电化学生物传感器,用于检测葡萄糖、胆固醇、多巴胺(DA)、抗坏血酸(AA)、尿酸(UA)和农药生物分子,具有更高的灵敏度、选择性和较低的检测极限。最后,展望了石墨烯生物传感技术的发展前景。 相似文献
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近年来,金属纳米颗粒的制备研究引起了人们的广泛兴趣.与相应的块体材料相比,金属纳米颗粒具有独特的化学和物理性质,可应用于电学、催化、磁性材料、光催化、生物染色剂、药物输送等许多领域.其中,传感器是纳米颗粒最有前途的应用领域之一.传感器的微型化是传感器发展的主要研究方向, 相似文献
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对生物分子功能化纳米酶的研究背景、意义以及模拟酶的概念和应用进行概述,详细介绍了生物分子功能化纳米酶的设计和制备方法,分析了模拟酶的催化机理、反应动力学、催化效率和稳定性等性质,讨论了生物分子功能化纳米酶在生物传感器、医药和环境监测等领域的应用,讨论了纳米酶在生物体内的分布、代谢途径及其形态和结构表征技术,探讨了生物分子功能化纳米酶的发展趋势。通过对生物分子功能化纳米酶的全面介绍,有助于深入了解和探究该领域的研究进展和应用前景。 相似文献
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Gra?yna A. P?aza Joanna Chojniak Ibrahim M. Banat 《International journal of molecular sciences》2014,15(8):13720-13737
Developing a reliable experimental protocol for the synthesis of nanomaterials is one of the challenging topics in current nanotechnology particularly in the context of the recent drive to promote green technologies in their synthesis. The increasing need to develop clean, nontoxic and environmentally safe production processes for nanoparticles to reduce environmental impact, minimize waste and increase energy efficiency has become essential in this field. Consequently, recent studies on the use of microorganisms in the synthesis of selected nanoparticles are gaining increased interest as they represent an exciting area of research with considerable development potential. Microorganisms are known to be capable of synthesizing inorganic molecules that are deposited either intra- or extracellularly. This review presents a brief overview of current research on the use of biosurfactants in the biosynthesis of selected metallic nanoparticles and their potential importance. 相似文献
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Topical delivery of silver nanoparticles promotes wound healing 总被引:4,自引:0,他引:4
Wound healing is a complex process and has been the subject of intense research for a long time. The recent emergence of nanotechnology has provided a new therapeutic modality in silver nanoparticles for use in burn wounds. Nonetheless, the beneficial effects of silver nanoparticles on wound healing remain unknown. We investigated the wound-healing properties of silver nanoparticles in an animal model and found that rapid healing and improved cosmetic appearance occur in a dose-dependent manner. Furthermore, through quantitative PCR, immunohistochemistry, and proteomic studies, we showed that silver nanoparticles exert positive effects through their antimicrobial properties, reduction in wound inflammation, and modulation of fibrogenic cytokines. These results have given insight into the actions of silver and have provided a novel therapeutic direction for wound treatment in clinical practice. 相似文献
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Nanotechnology has arisen as a key player in the field of nanomedicine. Although the use of engineered nanoparticles is rapidly increasing, safety assessment is also important for the beneficial use of new nanomaterials. Considering that the experimental assessment of new nanomaterials is costly and laborious, in silico approaches hold promise. Several major challenges in nanotechnology indicate a need for nanoinformatics. New database initiatives such as ISA-TAB-Nano, caNanoLab, and Nanomaterial Registry will help in data sharing and developing data standards, and, as the amount of nanomaterials data grows, will provide a way to develop methods and tools specific to the nanolevel. In this review, we describe emerging databases and tools that should aid in the progress of nanotechnology research. 相似文献
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纳米科技的发展对卤化银技术进步的影响 总被引:2,自引:0,他引:2
刘春艳 《感光科学与光化学》2002,20(3):204-218
纳米科技和纳米材料在过去的十几年得到了迅速的发展,并将继续发展并渗透到各个领域,给世界和人类生活带来不可估量的影响。“纳米技术”真的是一个新的概念?事实上,某些材料的制备和使用早已经涉及了这个长度范围,卤化银照相技术就是“老”的纳米技术之一,在早期,从事卤化银照相的人们凭经验和有限的能力控制材料的某些结构在纳米级范畴,随着纳米科学的发展,纳米技术在卤化银照相领域的使用走过了从无意识到有目的的过程,促进了照相科学的发展。本论文将结合卤化银技术在21世纪的发展趋势,从三个方面(在纳米级研究卤化银照相,卤化银微晶上的纳米结构,纳米卤化银微粒)探讨纳米科学对卤化银技术进步的影响。 相似文献
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Harshada Kotrange Agnieszka Najda Aarti Bains Robert Gruszecki Prince Chawla Mansuri M. Tosif 《International journal of molecular sciences》2021,22(17)
In addition to the benefits, increasing the constant need for antibiotics has resulted in the development of antibiotic bacterial resistance over time. Antibiotic tolerance mainly evolves in these bacteria through efflux pumps and biofilms. Leading to its modern and profitable uses, emerging nanotechnology is a significant field of research that is considered as the most important scientific breakthrough in recent years. Metal nanoparticles as nanocarriers are currently attracting a lot of interest from scientists, because of their wide range of applications and higher compatibility with bioactive components. As a consequence of their ability to inhibit the growth of bacteria, nanoparticles have been shown to have significant antibacterial, antifungal, antiviral, and antiparasitic efficacy in the battle against antibiotic resistance in microorganisms. As a result, this study covers bacterial tolerance to antibiotics, the antibacterial properties of various metal nanoparticles, their mechanisms, and the use of various metal and metal oxide nanoparticles as novel antibiotic carriers for direct antibiotic delivery. 相似文献
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Wided Najahi-Missaoui Robert D. Arnold Brian S. Cummings 《International journal of molecular sciences》2021,22(1)
The field of nanotechnology has grown over the last two decades and made the transition from the benchtop to applied technologies. Nanoscale-sized particles, or nanoparticles, have emerged as promising tools with broad applications in drug delivery, diagnostics, cosmetics and several other biological and non-biological areas. These advances lead to questions about nanoparticle safety. Despite considerable efforts to understand the toxicity and safety of these nanoparticles, many of these questions are not yet fully answered. Nevertheless, these efforts have identified several approaches to minimize and prevent nanoparticle toxicity to promote safer nanotechnology. This review summarizes our current knowledge on nanoparticles, their toxic effects, their interactions with mammalian cells and finally current approaches to minimizing their toxicity. 相似文献