发布求助
文献互助 智能选刊 最新文献

Noble and Precious Metals - Properties, Nanoscale Effects and Applications最新文献

筛选
英文 中文
Colorimetric Detection of Copper Ion Based on Click Chemistry 基于Click化学的铜离子比色检测
Noble and Precious Metals - Properties, Nanoscale Effects and Applications Pub Date : 2018-07-04 DOI: 10.5772/INTECHOPEN.76024
Lingwen Zeng, Z. Fang, Yunbo Wang
{"title":"Colorimetric Detection of Copper Ion Based on Click Chemistry","authors":"Lingwen Zeng, Z. Fang, Yunbo Wang","doi":"10.5772/INTECHOPEN.76024","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.76024","url":null,"abstract":"Two colorimetric assays, lateral flow biosensor (LFB) and hemin/G-Quadruplex DNAzyme-based colorimetric assay, were developed for the detection of copper ion based on click chemistry. Two single-strand DNA (ssDNA) with azide- and alkyne- modified at 3′ and 5′ separately can be linked by the Cu + -catalyzed click chemistry. For hemin/G-Quadruplex DNAzyme-based assay, the two ssDNA fragments linked by Cu + catalyzed click chemistry could form a complete G-rich sequence that severed as a horse- radish peroxidase. In the presence of hemin and K + , the colorless substrate tetramethyl benzidine (TMB) is catalyzed into a colored product by the G-rich sequence. The con- centration of Cu 2+ can then be quantitatively analyzed by measuring the color density. For the LFB assay, the two ligated ssDNA fragments could form a sandwich complex between an ssDNA fragment immobilized on gold nanoparticles and another ssDNA fragment on test zone of a biosensor, respectively. The biosensor enables visual detection of copper ion with excellent specificity. In comparison with conventional methods, the present assays are simpler to operate and more cost-effective to use, and so have great potential in point-of-care diagnosis and environmental monitoring.","PeriodicalId":201297,"journal":{"name":"Noble and Precious Metals - Properties, Nanoscale Effects and Applications","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128436802","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Band Structure, Morphology, Functionality, and Size- Dependent Properties of Metal Nanoparticles 金属纳米颗粒的能带结构、形态、功能和尺寸依赖性质
Noble and Precious Metals - Properties, Nanoscale Effects and Applications Pub Date : 2018-07-04 DOI: 10.5772/INTECHOPEN.72761
J. A. Adekoya, K. O. Ogunniran, T. Siyanbola, E. O. Dare, N. Revaprasadu
{"title":"Band Structure, Morphology, Functionality, and Size- Dependent Properties of Metal Nanoparticles","authors":"J. A. Adekoya, K. O. Ogunniran, T. Siyanbola, E. O. Dare, N. Revaprasadu","doi":"10.5772/INTECHOPEN.72761","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.72761","url":null,"abstract":"Metallic nanoparticles are gradually emerging as important materials because of their novel shape and size-dependent chemical and physical properties that differ drastically \u0000from their bulk counterparts. The main challenges in the field of nano-chemistry are the rational control and manipulation of synthesis to derive materials with one of their dimensions in nanometer regime, and upscale production of nanomaterials for device fabrication. This chapter reviews the fundamentals of the quantum properties of metals \u0000and quantum mechanical size effects with special focus on clusters of Pd, Pt, Au and Ag. Effects of reduction in size of metal nanoparticles to nanoscale on their various properties (structural, thermal, mechanical, chemical, electronic, magnetic and optical) are reviewed. The chapter concludes with a review of select medical applications of metal nanoparticles.","PeriodicalId":201297,"journal":{"name":"Noble and Precious Metals - Properties, Nanoscale Effects and Applications","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129600422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 21
Properties and Applications of Ruthenium 钌的性质及应用
Noble and Precious Metals - Properties, Nanoscale Effects and Applications Pub Date : 2018-07-04 DOI: 10.5772/INTECHOPEN.76393
A. Sahu, D. Dash, K. Mishra, S. Mishra, Rajni Yadav, P. Kashyap
{"title":"Properties and Applications of Ruthenium","authors":"A. Sahu, D. Dash, K. Mishra, S. Mishra, Rajni Yadav, P. Kashyap","doi":"10.5772/INTECHOPEN.76393","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.76393","url":null,"abstract":"Ruthenium (Ru) with atomic number of 44 is one of the platinum group metals, the others being Rh, Pd, Os, Ir and Pt. In earth ’ s crust, it is quite rare, found in parts per billion quantities, in ores containing some of the other platinum group metals. Ruthenium is silvery whitish, lustrous hard metal with a shiny surface. It has seven stable isotopes. Recently, coordination and organometallic chemistry of Ru has shown remarkable growth. In this chapter, we review the application of Ru in diverse fields along with its physical and chemical properties. In the applications part of Ru we have primarily focused on the biomedical applications. The biomedical applications are broadly divided into diagnostic and treatment aspects. Ru and their complexes are mainly used in determination of ferritin, calcitonin and cyclosporine and folate level in human body for diagnosis of diseases. Treatment aspects focuses on immunosuppressant, antimicrobial and anticancer activity. materials. In biomedical fields Ru is used for diagnosis and treatment purpose. For example, Ru is used for determination of calcitonin level in blood which is helpful in diagnosis and treatment of diseases related to thyroid and parathyroid glands. Also, Ru plays an important role in Elecys folate RBC assay in estimating folate deficiency in RBC. Ruthenium cyclosporin complex gives a stable compound which results in an inhibitory effect on T lymphocyte proliferation which shows its immune-suppressant action. Ruthenium complex has its effectiveness against wide range of parasitic diseases. Ruthenium shows the ability to bind to the DNA and inhibits its replication as well as protein synthesis. This property helps in the treatment of cancer. This chapter gives a brief account of the various properties of Ru which are exploited for applications in the medical field. It is likely that in the coming years, further research will lead to even more useful applications of this miraculous element.","PeriodicalId":201297,"journal":{"name":"Noble and Precious Metals - Properties, Nanoscale Effects and Applications","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131265044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
Introductory Chapter: Overview of the Properties and Applications of Noble and Precious Metals 导论章:贵金属和贵金属的性质和应用概述
Noble and Precious Metals - Properties, Nanoscale Effects and Applications Pub Date : 2018-07-04 DOI: 10.5772/INTECHOPEN.75503
M. Seehra, A. Bristow
{"title":"Introductory Chapter: Overview of the Properties and Applications of Noble and Precious Metals","authors":"M. Seehra, A. Bristow","doi":"10.5772/INTECHOPEN.75503","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.75503","url":null,"abstract":"The noble and precious metals correspond to a selection of the transition-metal group of the periodic table (see Figure 1), including copper (Cu), silver (Ag), gold (Au), platinum (Pt), palladium (Pd), iridium (Ir), osmium (Os), ruthenium (Ru), rhodium (Rh), and rhenium (Re). Pt also gives its name to a distinct subset of these elements, known as the platinum group, which include Ru, Rh, Pd, Os, Ir, and of course Pt. Additionally, Ru, Rh, Re, Os, and Ir are considered refractory metals—defined by melting points exceeding about 2000°C— along with several more abundant and commonly used transition metals, such as titanium (Ti), chromium (Cr), molybdenum (Mo), and tungsten (W). The noble and precious metals generally crystallize in the face-centered cubic (fcc) structure except for Ru, Re, and Os, which have the hexagonal close-packed (hcp) structure. The use of Cu, Ag, Au, and Pt in jewelry and coinage has been known throughout human history. The chapters presented in this book deal with other applications of some of these metals along with their fundamental properties.","PeriodicalId":201297,"journal":{"name":"Noble and Precious Metals - Properties, Nanoscale Effects and Applications","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115970633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Nano- and Micro-Patterning of Gold Nanoparticles on PEG- Based Hydrogels for Controlling Cell Adhesion 金纳米颗粒在聚乙二醇基水凝胶上的纳米和微观图案控制细胞粘附
Noble and Precious Metals - Properties, Nanoscale Effects and Applications Pub Date : 2018-07-04 DOI: 10.5772/INTECHOPEN.71548
Cigdem Yesildag, Zhenfang Zhang, F. Ren, Gonzalo de Vicente, M. Lensen
{"title":"Nano- and Micro-Patterning of Gold Nanoparticles on PEG- Based Hydrogels for Controlling Cell Adhesion","authors":"Cigdem Yesildag, Zhenfang Zhang, F. Ren, Gonzalo de Vicente, M. Lensen","doi":"10.5772/INTECHOPEN.71548","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.71548","url":null,"abstract":"Gold nanoparticles (Au NPs) have unique and tunable size- and shape-dependent optical and chemical properties and little toxicity. In this chapter, we describe results on Au NPs employed as cell-binding entities at biomaterials’ interfaces. Hereby, Au NPs with differ - ent sizes and shapes were nano- or micro-patterned on the surface of poly(ethylene gly -col) (PEG)-based hydrogels by using our recently developed patterning strategies based on soft lithography. These hybrid biomaterials can be applied in various biological or biomedical applications, such as for fundamental cell studies considering adhesion and migration, tissue engineering, drug delivery, or as biosensors by using surface plasmon resonance (SPR) or surface-enhanced Raman spectroscopy (SERS).","PeriodicalId":201297,"journal":{"name":"Noble and Precious Metals - Properties, Nanoscale Effects and Applications","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132412729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Origins of the High Reactivity of Au Nanostructures Deduced from the Structure and Properties of Model Surfaces 从模型表面的结构和性质推断出金纳米结构高反应性的原因
Noble and Precious Metals - Properties, Nanoscale Effects and Applications Pub Date : 2018-03-16 DOI: 10.5772/INTECHOPEN.74006
S. Hoppe, L. Moskaleva
{"title":"Origins of the High Reactivity of Au Nanostructures Deduced from the Structure and Properties of Model Surfaces","authors":"S. Hoppe, L. Moskaleva","doi":"10.5772/INTECHOPEN.74006","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.74006","url":null,"abstract":"In this chapter, experimental and theoretical studies on surface segregation in Ag-Au systems, including our own thermodynamic studies and molecular dynamics simulations of surface restructuring, on the basis of density functional theory are reviewed. The restructuring processes are triggered by adsorbed atomic O, which is supplied and consumed during catalysis. Experimental evidence points to the essential role of Ag impuri- ties in nanoporous gold for activating O 2 . At the same time, increasing Ag concentration may be detrimental for the selectivity of partial oxidation. Understanding the role of silver requires a knowledge on its chemical state and distribution in the material. Recent studies using electron microscopy and photoelectron spectroscopy shed new light on this issue revealing a non-uniform distribution of residual Ag and co-existence of different chemical forms of Ag. We conclude by presenting an outlook on electromechanical coupling at Ag- Au surfaces, which shows a way to systematically tune the catalytic activity of bimetallic surfaces.","PeriodicalId":201297,"journal":{"name":"Noble and Precious Metals - Properties, Nanoscale Effects and Applications","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124864394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Extraction of Platinum Group Metals 铂族金属的提取
Noble and Precious Metals - Properties, Nanoscale Effects and Applications Pub Date : 2018-02-21 DOI: 10.5772/INTECHOPEN.73214
B. M. Thethwayo
{"title":"Extraction of Platinum Group Metals","authors":"B. M. Thethwayo","doi":"10.5772/INTECHOPEN.73214","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.73214","url":null,"abstract":"About 80% of the worlds’ reserves for platinum group metals (PGMs) are in South Africa’s Bushveld Igneous Complex. Processing of PGM involves comminution, flotation, smelt ing, converting, base metals refinery and precious metals refinery. Due to increasing chrome content in the feed and the challenges associated with operating high chrome feed, alternative routes to smelting of PGM are being investigated. Some hydrometallurgi - cal routes have been proposed. However, none of the reported potential routes have yet been commercialised. less electricity consumption, less CO 2 emissions and no restriction on chrome content of feed. Other hydrometallurgical routes but commercialised","PeriodicalId":201297,"journal":{"name":"Noble and Precious Metals - Properties, Nanoscale Effects and Applications","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114221598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Copper Metal for Semiconductor Interconnects 半导体互连用铜金属
Noble and Precious Metals - Properties, Nanoscale Effects and Applications Pub Date : 2018-01-26 DOI: 10.5772/INTECHOPEN.72396
Yi-Lung Cheng, Chih-Yen Lee, Y. Huang
{"title":"Copper Metal for Semiconductor Interconnects","authors":"Yi-Lung Cheng, Chih-Yen Lee, Y. Huang","doi":"10.5772/INTECHOPEN.72396","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.72396","url":null,"abstract":"Resistance-capacitance (RC) delay produced by the interconnects limits the speed of the integrated circuits from 0.25 mm technology node. Copper (Cu) had been used to replace aluminum (Al) as an interconnecting conductor in order to reduce the resistance. In this chapter, the deposition method of Cu films and the interconnect fabrication with Cu metallization are introduced. The resulting integration and reliability challenges are addressed as well.","PeriodicalId":201297,"journal":{"name":"Noble and Precious Metals - Properties, Nanoscale Effects and Applications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129089366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 13
Silver Nanoparticles Fabricated Using Chemical Vapor Deposition and Atomic Layer Deposition Techniques: Properties, Applications and Perspectives: Review 化学气相沉积和原子层沉积制备纳米银:性能、应用与展望
Noble and Precious Metals - Properties, Nanoscale Effects and Applications Pub Date : 2017-12-20 DOI: 10.5772/INTECHOPEN.71571
P. Piszczek, A. Radtke
{"title":"Silver Nanoparticles Fabricated Using Chemical Vapor Deposition and Atomic Layer Deposition Techniques: Properties, Applications and Perspectives: Review","authors":"P. Piszczek, A. Radtke","doi":"10.5772/INTECHOPEN.71571","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.71571","url":null,"abstract":"Silver nanoparticles with unique physicochemical properties and high biocide activity attract great interest in the design and in the manufacture of the new generation materials intended for biomedical technologies. This review aims to provide assessment of the bioactivity and usefulness of Ag-based materials in biomedical technologies, which are produced with the use of chemical vapor deposition (CVD) and atomic layer deposition (ALD) methods. The use of CVD and ALD technologies in the fabrication of silver layers, nanoparticles, and nanocomposites are discussed in the first part of this chapter. The second half of this review deals with the topics associated with the release of silver ions from nanoparticles or nanolayers and discusses the antimicrobial activity, bio-integration properties and toxicity of these materials.","PeriodicalId":201297,"journal":{"name":"Noble and Precious Metals - Properties, Nanoscale Effects and Applications","volume":"186 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121590502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 24
Applications of Gold Nanoparticles in Cancer Imaging and Treatment 金纳米颗粒在癌症成像和治疗中的应用
Noble and Precious Metals - Properties, Nanoscale Effects and Applications Pub Date : 2017-12-20 DOI: 10.5772/INTECHOPEN.70901
Shouju Wang, Guangming Lu
{"title":"Applications of Gold Nanoparticles in Cancer Imaging and Treatment","authors":"Shouju Wang, Guangming Lu","doi":"10.5772/INTECHOPEN.70901","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.70901","url":null,"abstract":"Cancer is one of the leading causes of death worldwide. In the last two decades, the development of nanotechnology has facilitated our ability to design new nanoparticles for the diagnosis and treatment of cancer. In this chapter, we reviewed the applications of gold nanoparticles as contrast agents for cancer imaging, including optical imaging, photoacoustic imaging, and X-ray–based imaging. We also reviewed their applications as delivery carriers for small molecule drugs, therapeutic genes, vaccines, and adjuvants and as therapeutic agents by themselves in cancer treatment, including photothermal therapy, photodynamic therapy, and radiation therapy.","PeriodicalId":201297,"journal":{"name":"Noble and Precious Metals - Properties, Nanoscale Effects and Applications","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122165276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 20
下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信