Journal of Metastable and Nanocrystalline Materials最新文献_第4页

Production of Nanocomposite Tungsten Carbide Buttons by Mixing with Co and ZrO2 Nanopowders Co和ZrO2纳米粉混合制备纳米复合碳化钨钮扣

Journal of Metastable and Nanocrystalline Materials Pub Date : 2023-02-10 DOI: 10.4028/p-14zy4w

A. Al-Hazza

引用次数: 0

Preliminary Study of Modified Fluorescent Silica Nanoparticles for the Detection of IgY Antibody 改性荧光二氧化硅纳米颗粒检测IgY抗体的初步研究

Journal of Metastable and Nanocrystalline Materials Pub Date : 2023-02-10 DOI: 10.4028/p-axmy8o

Firda Apriyani, Darmawan Julyansyah, M. Angelina, A. Randy, R. Manurung, B. Yuliarto, S. N. A. Jenie

{"title":"Preliminary Study of Modified Fluorescent Silica Nanoparticles for the Detection of IgY Antibody","authors":"Firda Apriyani, Darmawan Julyansyah, M. Angelina, A. Randy, R. Manurung, B. Yuliarto, S. N. A. Jenie","doi":"10.4028/p-axmy8o","DOIUrl":"https://doi.org/10.4028/p-axmy8o","url":null,"abstract":"Biosensors must display high sensitivity and selectivity with fast response and be cost-effective. Silica nanoparticles are profoundly promising as versatile signal platforms opening up new possibilities for bioassays and dynamic units in biosensing systems. Fluorescent silica nanoparticles (FSNP) may be a key nanomaterial for labeling antibodies or antigens for biosensor application. Integration FSNP with functional molecules utilizing different surface modification techniques can bring out great improvements such as selective recognition, sensitive detection, and signal amplification because FSNP can bind with a large number of dye molecules within a silica matrix. The FSNP conjugated with anti-IgY can be applied for the detection of IgY antibody. FSNP was fabricated using the sol-gel method with hydrosilylation techniques for silica surface modification. N-H of amide groups from FSNP-anti-IgY ware observed in the FTIR spectra at 1648 cm-1 indicating that the conjugation was successful. The fluorescence intensity of FSNP-anti-IgY after detection of IgY was applied for immunodetection and measured using fluorescence spectroscopy. The intensity of FSNP-anti-IgY was 156.82, 368.31, and 648.00 a.u for the 0.05, 0.1, 0.5 µg/ml of the sample concentrations, respectively. The results showed that the modified FSNP-anti-IgY may be used for the fluorescence detection of antibodies.","PeriodicalId":177608,"journal":{"name":"Journal of Metastable and Nanocrystalline Materials","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128423754","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

Iron Oxide Nanoparticles Preparation by Using Homemade Hydrothermal Pyrolysis Technique with Different Reaction Times 不同反应时间的自制水热热解法制备氧化铁纳米颗粒

Journal of Metastable and Nanocrystalline Materials Pub Date : 2023-02-10 DOI: 10.4028/p-cbng1t

A. Taha, Mohammed Shalan Essa, B. T. Chiad

{"title":"Iron Oxide Nanoparticles Preparation by Using Homemade Hydrothermal Pyrolysis Technique with Different Reaction Times","authors":"A. Taha, Mohammed Shalan Essa, B. T. Chiad","doi":"10.4028/p-cbng1t","DOIUrl":"https://doi.org/10.4028/p-cbng1t","url":null,"abstract":"In this research, iron oxide nanoparticles were prepared by a new hydrothermal pyrolysis technique at different reaction times. X-ray diffractometer (XRD) characterization showed that the nanoparticles have high crystallinity with a combination of two crystal phases maghemite and magnetite, as the reaction time increase the ratio of magnetite phase to maghemite phase increased. The morphological properties of the samples showed an increase in the particle size from 58 to 108 nm due to the single domain–multidomain transition as showed by scanning electron microscope (SEM). Electron Dispersive X-ray (EDX) spectra showed only peaks of oxygen and iron that verified the formation of iron oxide nanoparticles. The Fourier transform infrared spectroscopy (FT-IR) showed that the absorption peaks at about 578 cm-1 and 630 cm-1 correspond to the stretching modes of the Fe-O in magnetite, as the reaction time increased the peak around 630 cm-1 decreased due to the magnetite phase only. Finally, all the results showed the formation of iron oxide nanoparticles by this new technique that merges spray pyrolysis and hydrothermal techniques with many advantages such as spraying successive parameters in a short time, high-speed, good homogeneity, and pure material with small particle size.","PeriodicalId":177608,"journal":{"name":"Journal of Metastable and Nanocrystalline Materials","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125557219","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

Synthesis of Ni-B/Hydroxyapatite by Electrochemical Method and Its Application as Catalyst on NaBH4 Hydrolysis 电化学法合成Ni-B/羟基磷灰石及其在NaBH4水解催化剂中的应用

Journal of Metastable and Nanocrystalline Materials Pub Date : 2021-06-15 DOI: 10.4028/www.scientific.net/JMNM.33.29

A. Nur, N. Nazriati, F. Fajaroh, A. Arthaningrum, I. Nurcahyani, D. L. Cipto, F. Kurniawan

{"title":"Synthesis of Ni-B/Hydroxyapatite by Electrochemical Method and Its Application as Catalyst on NaBH4 Hydrolysis","authors":"A. Nur, N. Nazriati, F. Fajaroh, A. Arthaningrum, I. Nurcahyani, D. L. Cipto, F. Kurniawan","doi":"10.4028/www.scientific.net/JMNM.33.29","DOIUrl":"https://doi.org/10.4028/www.scientific.net/JMNM.33.29","url":null,"abstract":"The result of burning hydrogen which is environmentally friendly makes hydrogen as a very attractive fuel. Hydrogen storage is interesting research material. One alternative to hydrogen storage is a metal-hydride as NaBH4. In this paper, the catalyst for hydrogen production from storage, namely The result of burning hydrogen, which is environmentally friendly, makes hydrogen a desirable fuel. Hydrogen storage is exciting research material. One alternative to hydrogen storage is a metal-hydride as NaBH4. In this paper, the catalyst for hydrogen production from storage, namely NaBH4, was synthesized by electrochemical. Ni-B catalyst with hydroxyapatite as catalyst support was prepared by electrochemical. Ni-B/HA catalyst was synthesized at various current densities (namely 67, 133, and 200 mA/cm2) and various electrolysis times (namely 30, 60, and 90 minutes). The resulting catalysts were analyzed by XRD and used as the catalyst for hydrogen production from the hydrolysis reaction of NaBH4. The fastest hydrogen production was obtained using a catalyst generated at 133 mA/cm2 and an electrolysis time of 60 minutes. The reaction rate equation for the hydrolysis of NaBH4 has a first-order reaction to the concentration of NaBH4. The resulting reaction rate constant ranged from 233.33 mL/g/min to 861.11 mL/g/min. The relationship between reaction temperature and reaction rate constant can be expressed by the equation k = 2.2x106exp (5534/T).","PeriodicalId":177608,"journal":{"name":"Journal of Metastable and Nanocrystalline Materials","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128243798","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

Synthesis of Metallic Zinc Nanoparticles by Reduction of Zinc Ions in Protonic Solvent 质子溶剂中锌离子还原法制备金属锌纳米粒子

Journal of Metastable and Nanocrystalline Materials Pub Date : 2021-06-15 DOI: 10.4028/www.scientific.net/JMNM.33.39

S. Noda, N. Yamauchi, K. Nakashima, Ken-ichi Watanabe, Hidekazu Koda, Hiroshi Kunigami, Hideki Kunigami, Yoshio Kobayashi

{"title":"Synthesis of Metallic Zinc Nanoparticles by Reduction of Zinc Ions in Protonic Solvent","authors":"S. Noda, N. Yamauchi, K. Nakashima, Ken-ichi Watanabe, Hidekazu Koda, Hiroshi Kunigami, Hideki Kunigami, Yoshio Kobayashi","doi":"10.4028/www.scientific.net/JMNM.33.39","DOIUrl":"https://doi.org/10.4028/www.scientific.net/JMNM.33.39","url":null,"abstract":"Simple and low environmental impact methods for producing chemically-stable nanoparticles of metallic zinc (Zn) are asked to be developed, because metallic Zn nanoparticles are easily oxidized in air, and organic solvents, which can be used for the fabrication of metallic Zn particles, give a great environmental impact. The present work focuses on the chemical reaction in protonic solvents containing aqueous solvents, of which the use will give a smaller environmental load, and proposes a method for producing metallic Zn nanoparticles by reduction of Zn ions in the protonic solvent. Two kinds of hydrophilic solvents were examined: water and ethylene glycol (EG). The use of water and EG as the solvents produced Zn oxide. Though the addition of aluminum salt to EG also produced Zn oxide, the crystallinity of Zn oxide was lower than that for with no addition of aluminum salt. In the case of the aluminum salt addition, nanoparticles with a size of 27. 5±13.3 nm were fabricated, and not only bonds of Zn-O-Zn and Zn-OH but also a bond of Zn-Zn were confirmed to be formed, which indicated the production of low crystallinity metallic Zn nanoparticles.","PeriodicalId":177608,"journal":{"name":"Journal of Metastable and Nanocrystalline Materials","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114308382","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

Functional Magnetite Nanoparticle: A Review on the Particles Lysis and Nucleic Acid Separation 功能磁铁矿纳米颗粒:颗粒裂解与核酸分离研究进展

Journal of Metastable and Nanocrystalline Materials Pub Date : 2021-06-15 DOI: 10.4028/www.scientific.net/JMNM.33.13

P. Nurlilasari, C. Panatarani, M. Miranti, S. Ekawardhani, F. Faizal, I. Joni

引用次数: 0

The Self-Adhesive Carbon Powder Based on Coconut Coir Fiber as Supercapacitor Application 椰椰纤维自粘碳粉作为超级电容器的应用

Journal of Metastable and Nanocrystalline Materials Pub Date : 2021-06-15 DOI: 10.4028/www.scientific.net/JMNM.33.1

E. Taer, Nazilah Nikmatun, Apriwandi, Agustino, R. Taslim, Ezri Hidayat

{"title":"The Self-Adhesive Carbon Powder Based on Coconut Coir Fiber as Supercapacitor Application","authors":"E. Taer, Nazilah Nikmatun, Apriwandi, Agustino, R. Taslim, Ezri Hidayat","doi":"10.4028/www.scientific.net/JMNM.33.1","DOIUrl":"https://doi.org/10.4028/www.scientific.net/JMNM.33.1","url":null,"abstract":"Activated carbon powder is a popular material used as an electrode material for large scale applications, especially supercapacitors because of its excellent physical and electrochemical properties. Self-adhesive carbon powder based on coconut coir was prepared via single-step pyrolysis and chemical activation with NaOH solution. A single-step pyrolysis was performed, including carbonization and physical activation in the N2/CO2 atmosphere. The physical temperature of 750 °C, 800 °C, 850 °C and 900 °C is the major focus to evaluate the behavior of self-adhesive activated carbon. The density and the microcrystalline characteristics of the electrodes are inﬂuenced by the physical activation temperature. The density feature was evaluated based on the approach of self-adhesive carbon reduction dimensions such as mass, diameter, and thickness. Microcrystalline behavior was performed by using X-ray diffraction method, and it has shown the good amorphous properties of the activated carbon. The self-adhesive activated carbon electrodes were characterized and evaluated in symmetrical supercapacitor cells. The electrochemical characterization of the carbon electrodes using cyclic voltammetry method found that the high specific capacitance of 96 F.g-1 in 1 M H2SO4 electrolyte at a low scan rate of 1 mV.s-1 with energy specific and power specific of 13.33 Wh.kg-1 and 48.03 W.kg-1, respectively.","PeriodicalId":177608,"journal":{"name":"Journal of Metastable and Nanocrystalline Materials","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126587732","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

Photocatalytic Activities of Cobalt-Doped ZnO Nanoparticles by Hydrothermal Method 水热法制备钴掺杂ZnO纳米颗粒的光催化活性

Journal of Metastable and Nanocrystalline Materials Pub Date : 2021-04-05 DOI: 10.4028/www.scientific.net/JMNM.32.33

S. Sathiya, J. Vijayapriya, K. Parasuraman, D. Anburaj, S. J. Gnanamuthu, G. Nedunchezian

引用次数: 1

Microstructural Investigation of Fluoroapatite Hydrothermally Converted from Hydroxyapatite Synthesized from Crocodile Eggshell 鳄鱼蛋壳合成羟基磷灰石水热转化氟磷灰石的微观结构研究

Journal of Metastable and Nanocrystalline Materials Pub Date : 2021-04-05 DOI: 10.4028/www.scientific.net/JMNM.32.21

R. Auniq, Weerapong Lerdrattranataywee, U. Boonyang

引用次数: 0

Phase Separation Effect in Gelation of 3DOM Bioactive Glass 3DOM生物活性玻璃凝胶化中的相分离效应

Journal of Metastable and Nanocrystalline Materials Pub Date : 2021-04-05 DOI: 10.4028/www.scientific.net/JMNM.32.15

R. Auniq, U. Boonyang

引用次数: 0