Sol-Gel Method - Design and Synthesis of New Materials with Interesting Physical, Chemical and Biological Properties最新文献

Synthesis of Conductive Sol-Gel ZnO Films and Development of ZnO Printed Electronics 导电溶胶-凝胶ZnO薄膜的合成及ZnO印刷电子的发展

Sol-Gel Method - Design and Synthesis of New Materials with Interesting Physical, Chemical and Biological Properties Pub Date : 2019-02-13 DOI: 10.5772/INTECHOPEN.82041

D. Winarski, F. Selim

引用次数: 3

Dependence of pH Variation on the Structural, Morphological, and Magnetic Properties of Sol-Gel Synthesized Strontium Ferrite Nanoparticles pH变化对溶胶-凝胶合成铁酸锶纳米颗粒结构、形态和磁性能的影响

Sol-Gel Method - Design and Synthesis of New Materials with Interesting Physical, Chemical and Biological Properties Pub Date : 2019-02-13 DOI: 10.5772/INTECHOPEN.80667

Muhammad Syazwan Mustaffa, R. Azis, SakinahSulaiman

{"title":"Dependence of pH Variation on the Structural, Morphological, and Magnetic Properties of Sol-Gel Synthesized Strontium Ferrite Nanoparticles","authors":"Muhammad Syazwan Mustaffa, R. Azis, SakinahSulaiman","doi":"10.5772/INTECHOPEN.80667","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.80667","url":null,"abstract":"In this research work, an attempt of regulating the pH as a sol-gel modification parameter during preparation of SrFe 12 O 19 nanoparticles sintered at a low sintering temperature of 900 (cid:1) C has been presented. The relationship of varying pH (pH 1 – 14) on structural microstructures and magnetic behaviors of SrFe 12 O 19 nanoparticles was characterized by X-ray diffraction (XRD), field emission scanning microscope (FESEM), thermogravimetric analysis (TGA), Fourier-transform infrared (FTIR), and vibrating-sample magnetometer (VSM). The single-phase SrFe 2 O 19 with optimum magnetic properties can be obtained at pH 1 with a sintering temperature of 900 (cid:1) C. As pH values increase, the presence of impurity Fe 2 O 3 was observed. TGA data-varying pH shows that the total weight loss of most samples was at 30.44% which corresponds to the decomposition process. The IR spectra showed three main absorption bands in the range of 400 – 600 cm (cid:3) 1 corresponding to strontium hexaferrite. SEM micrographs exhibit a circular crystal type of strontium ferrite with an average crystal size in the range of 53 – 133 nm. A higher saturation magnetization M s , remanent magnetization M r , and hysteresis H c were recorded to have a large loop of 55.094 emu/g, 33.995 emu/g, and 5357.6 Oe, respectively, at pH 11, which make the synthesized materials useful for high-density recording media and permanent magnets.","PeriodicalId":21910,"journal":{"name":"Sol-Gel Method - Design and Synthesis of New Materials with Interesting Physical, Chemical and Biological Properties","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82643962","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

Introductory Chapter: A Brief Semblance of the Sol-Gel Method in Research 导论章:研究中溶胶-凝胶法的概况

Sol-Gel Method - Design and Synthesis of New Materials with Interesting Physical, Chemical and Biological Properties Pub Date : 2018-12-12 DOI: 10.5772/INTECHOPEN.82487

G. Aguilar

引用次数: 14

Sol-Gel Process and Engineering Nanostructure 溶胶-凝胶工艺与工程纳米结构

Sol-Gel Method - Design and Synthesis of New Materials with Interesting Physical, Chemical and Biological Properties Pub Date : 2018-12-07 DOI: 10.5772/INTECHOPEN.79857

H. Aminirastabi, H. Xue, D. Peng, G. Ji

引用次数: 0

Sol-Gel Films: Corrosion Protection Coating for Aluminium Alloy 溶胶-凝胶膜:铝合金防腐涂层

Sol-Gel Method - Design and Synthesis of New Materials with Interesting Physical, Chemical and Biological Properties Pub Date : 2018-11-05 DOI: 10.5772/INTECHOPEN.79712

E. Gonzalez, N. Vejar, R. Solís, L. Muñoz, M. Encinas, M. Páez

{"title":"Sol-Gel Films: Corrosion Protection Coating for Aluminium Alloy","authors":"E. Gonzalez, N. Vejar, R. Solís, L. Muñoz, M. Encinas, M. Páez","doi":"10.5772/INTECHOPEN.79712","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.79712","url":null,"abstract":"Aluminum alloys used in aeronautical industry are susceptible to corrosion. The solu- tion to this problem is base chromate materials, which have been heavily regulated and restricted. The development of alternatives begins in the 1970s and the 2000s, where some potential methodologies were established. The sol-gel process is one of these methods, in which thin oxide layers are deposited on the metal substrate. An important aspect is the fact of possible combinations among types of oxides and the incorporation of an organic compound to improve the performance of the films; moreover, this allows the addition of inhibitors and nanomaterials, making this method an interesting and versatile way to obtain a coating. In this chapter, we will describe the importance of the use of coating synthesized via sol-gel in the corrosion protection of metal surfaces. The advantages and disadvantages of using modified sol-gel polymer films and hybrid system coatings will also be discussed, as well as the methodologies for the chemical characterization and the feasibility of evaluating the mechanical properties of the coatings.","PeriodicalId":21910,"journal":{"name":"Sol-Gel Method - Design and Synthesis of New Materials with Interesting Physical, Chemical and Biological Properties","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80617007","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: 5

The Effect of Annealing, Doping on the Properties and Functionality of Zinc Oxide Thin Film; Review 退火、掺杂对氧化锌薄膜性能和功能的影响审查

Sol-Gel Method - Design and Synthesis of New Materials with Interesting Physical, Chemical and Biological Properties Pub Date : 2018-11-05 DOI: 10.5772/INTECHOPEN.79018

E. Ugwu

{"title":"The Effect of Annealing, Doping on the Properties and Functionality of Zinc Oxide Thin Film; Review","authors":"E. Ugwu","doi":"10.5772/INTECHOPEN.79018","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.79018","url":null,"abstract":"The review of the effect of annealing and doping zinc oxide thin films on both the struc - tural and optical properties has been carried out for different growth techniques such as sol–gel growth technique. The structural and optical properties were carried out using thin films were characterized SEM, XRD while TE and TM guided mode spectra, UV– VIS–NIR (HR4000Ocean Optics) and UV–Visible spectrometry were used accordingly respectively. From the results, it was clearly observed the both the morphological and the crystal characteristics structural characteristic, although increase in the percent of doping element affected it as the diffraction peak was shifts slightly to a lower angle side with report that crystal structure of the film deteriorate at a higher doping concentration of doping element as it decreases the c-lattice. There was also adjustment on the band gap of the material when it was annealed at various temperatures and also when the dop - ing concentration was varied. The film exhibited lower absorbance, high transmittance depend on the regions of electromagnetic wave spectra.","PeriodicalId":21910,"journal":{"name":"Sol-Gel Method - Design and Synthesis of New Materials with Interesting Physical, Chemical and Biological Properties","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87146158","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