Digest Journal of Nanomaterials and Biostructures最新文献_第7页

A comprehensive study on Ni-Doped cobalt ferrites for optical response and anti-bacterial activity 镍掺杂钴铁氧体的光学响应和抗菌活性的综合研究

IF 0.9 4区材料科学

Digest Journal of Nanomaterials and Biostructures Pub Date : 2023-07-01 DOI: 10.15251/djnb.2023.183.975

F. Ullah, I. Ahmad, S. Zaib, M. Abrar, M. Khalil, M. Ebdah, S. Ramay, M. Saleem

{"title":"A comprehensive study on Ni-Doped cobalt ferrites for optical response and anti-bacterial activity","authors":"F. Ullah, I. Ahmad, S. Zaib, M. Abrar, M. Khalil, M. Ebdah, S. Ramay, M. Saleem","doi":"10.15251/djnb.2023.183.975","DOIUrl":"https://doi.org/10.15251/djnb.2023.183.975","url":null,"abstract":"In the current study, Ni doped CoFe2O4 nanoparticles were fabricated using well-known hydrothermal method. The structural, morphological, optical, and antibacterial activity were analyzed through the latest analytical techniques. The Fd-cubic spinel crystal structure was observed with variations in crystallite sizes and lattice parameters of synthesized samples. The growth of spherical and uniform nanoparticles with the presence of expected elements are observed from field emission scanning electron microscopy and energy dispersive x-rays analysis, respectively. A broad absorption band was shown in UV-visible absorption spectroscopy in the wavelength range of 200-320 nm. A significant increase in the energy band gap was observed from 2.98 eV to 3.56 eV as the concentration of dopant increased from 2% to 6%. The antibacterial activities of the samples were investigated against Staph aureus, Pseudomonas aeruginosa and E. Coli through the well-known Agar well diffusion method. The pure and Ni-doped CoFe2O4 exhibits a maximum zone of inhibition (3-25 mm), proposing that these materials are efficient against bacterial resistance. Further, the enhancement in value of the inhibition zone by substitution of Ni at cobalt sites recommended that it is a potential candidate for biomedical applications and can be highly effective against the high resistance of different bacteria.","PeriodicalId":11233,"journal":{"name":"Digest Journal of Nanomaterials and Biostructures","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46552929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of the laser CO2 properties on the superconducting nanocomposite Bi2Sr2-xYxCa2Cu3-yNiyO10+d at high temperatures 高温下激光CO2性能对超导纳米复合材料Bi2Sr2-xYxCa2Cu3-yNiyO10+d的影响

IF 0.9 4区材料科学

Digest Journal of Nanomaterials and Biostructures Pub Date : 2023-07-01 DOI: 10.15251/djnb.2023.183.881

N. A. Ahmad, A. K. Ali, S. H. Mahdi

{"title":"Effect of the laser CO2 properties on the superconducting nanocomposite Bi2Sr2-xYxCa2Cu3-yNiyO10+d at high temperatures","authors":"N. A. Ahmad, A. K. Ali, S. H. Mahdi","doi":"10.15251/djnb.2023.183.881","DOIUrl":"https://doi.org/10.15251/djnb.2023.183.881","url":null,"abstract":"Researchers have been looking into ways to cut down on energy waste in transportation and manufacturing in response to the poor value of energy production as a basic tenet of renewable energy producing facilities. Heat loss due to the electrical resistance of materials is the primary source of energy waste in electrical systems. There are a plethora of studies aimed at lowering material resistance, and the best approach involves the use of superconductor's materials. The number of possible strategies for improving the superconductor's electrical and structural characteristics is overwhelming. Using XRD analysis, a scanning electron microscope, electron dispersive spectroscopy, and the fourprobe technique, the authors of this paper report on their findings regarding the effect electrical and structural characteristics for laser-irradiated materials of the Bi2Sr2- xYxCa2Cu3-yNiyO10+δ compound over a period of 60 seconds. X-ray diffraction studies demonstrated that the crystal structure of the material did not change before and after laser irradiation; both the unirradiated and laser-irradiated samples were found to have an orthorhombic crystal structure. Using the four-probe approach, we looked at how irradiation affected the critical temperature of the specimens we produced. According to the findings of the tests, all of the specimens changed after being subjected to the laser light, with the critical temperature rising by 139 K, 147 K, and 145 K, respectively","PeriodicalId":11233,"journal":{"name":"Digest Journal of Nanomaterials and Biostructures","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48608490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of mechanical, thermal and water absorption behaviour of MWCNT’s with AL2O3 reinforced polymer composite AL2O3增强聚合物复合材料对MWCNT的力学、热学和吸水性能的研究

IF 0.9 4区材料科学

Digest Journal of Nanomaterials and Biostructures Pub Date : 2023-07-01 DOI: 10.15251/djnb.2023.183.951

T. Varunkumar, M. Jayaraj, R. Sivakumar, N. Manikandan

引用次数: 0

Scandium and niobium incorporated lithium titanate as the anode for Li-ion batteries 掺入钪和铌的钛酸锂用作锂离子电池的阳极

IF 0.9 4区材料科学

Digest Journal of Nanomaterials and Biostructures Pub Date : 2023-07-01 DOI: 10.15251/djnb.2023.183.933

C. Kumar, B. Bhusan, A. K. Sinha, A. Jha, S. Sinha

引用次数: 0

Novel rare earth metal and aluminium codoped ZnO photocatalysts for degradation of rhodamine b dye 新型稀土金属与铝共掺杂ZnO光催化剂降解罗丹明b染料

IF 0.9 4区材料科学

Digest Journal of Nanomaterials and Biostructures Pub Date : 2023-07-01 DOI: 10.15251/djnb.2023.183.859

M. S. Viswaksenan, A. Simi, A. Panneerselvam

{"title":"Novel rare earth metal and aluminium codoped ZnO photocatalysts for degradation of rhodamine b dye","authors":"M. S. Viswaksenan, A. Simi, A. Panneerselvam","doi":"10.15251/djnb.2023.183.859","DOIUrl":"https://doi.org/10.15251/djnb.2023.183.859","url":null,"abstract":"In this study, samarium and aluminium codoped zinc oxide nanostructures were produced via a soft chemical route, and their structural, morphological, optical, and photocatalytic capabilities were investigated. X-ray diffraction (XRD) patterns and photoluminescence (PL) studies show that both undoped and Sm & Al codoped ZnO nanostructures have a hexagonal wurtzite crystal structure. The shape of the sample's hexagonal nanostructures, as seen in FESEM pictures, changes as the amount of Sm3+ doping increases. Sm3+ and Al2+ ions have been incorporated into ZnO, as seen by the EDX spectra. ZnO nanostructures were thoroughly studied to learn how Al2+ and Sm3+ doping affected their structure, shape, absorption, emission, and photocatalytic activity. The capacity to absorb visible light is enhanced by the incorporation of Sm3+ ions, which causes a red shift in the optical energy band gap from 2.5 to 3.2 eV. Based on the results of in-depth photocatalytic tests, it has been shown that Sm & Al codoped ZnO nanostructures exhibit the highest photodegradation efficiency for RhB dye for Sm0.04MAl0.04MZn0.92MO, i.e. 84%, when exposed to visible light. ZnO, when doped with a rare earth metal ion (Sm3+), displays enhanced photocatalytic efficiency and might have real-world uses. In this research, nanoscale photocatalysts, as manufactured, degrade RhB dye effectively as a photocatalyst","PeriodicalId":11233,"journal":{"name":"Digest Journal of Nanomaterials and Biostructures","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44040772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparative analysis of adsorption and release properties of β-phenylethanol on two kinds of activated carbon 两种活性炭对β-苯乙醇吸附和释放性能的比较分析

IF 0.9 4区材料科学

Digest Journal of Nanomaterials and Biostructures Pub Date : 2023-07-01 DOI: 10.15251/djnb.2023.183.961

J. S. Zhang, Z. Fang, L. Wang, Z. Chen, Y. Zhou, M. Liang, S. J. Huang

{"title":"Comparative analysis of adsorption and release properties of β-phenylethanol on two kinds of activated carbon","authors":"J. S. Zhang, Z. Fang, L. Wang, Z. Chen, Y. Zhou, M. Liang, S. J. Huang","doi":"10.15251/djnb.2023.183.961","DOIUrl":"https://doi.org/10.15251/djnb.2023.183.961","url":null,"abstract":"In order to understand the adsorption and release properties of β-phenylethanol on activated carbon produced from different carbon sources, coconut shell activated carbon (CAC) and petroleum coke activated carbon (PAC) were selected for the immobilization β-phenylethanol. The structure and morphology of CAC and PAC were characterized by SEM, BET and TGA analysis. And then the effect of carbon sources and pore structure on β-phenylethanol adsorption and release properties were investigated by kinetic model. The results showed that the microporosity ratios for CAC and PAC were 89.13% and 77.12%, respectively, and both types of activated carbon were dominated by micropore structure. The adsorption behavior of β-phenylethanol on the CAC and PAC was both controlled by the physical adsorption, and the equilibrium adsorption capacity of CAC (391.2 mg/g) was 45.50% of that of PAC (859.8mg/g). Quasi primary equation can be used to describe the adsorption of β-phenylethanol on both types of activated carbon, i.e., the external transport resistance plays a major role in the adsorption process. The results of thermogravimetric analysis showed that the thermal stability of β-phenylethanol was obviously improved after the immobilization into activated carbon, accompanied with a higher temperature intervals for the release process and a decreased release rate. And the thermal stability of CAC loaded with β-phenylethanol was higher than that of PAC. Furthermore, the sustained release of β-phenylethanol from CAC and PAC was more consistent with the Korsmeyer-Peppas model and was dominated by Fick diffusion. The release rates of β-phenylethanol were 27.34% and 57.57% for CAC and PAC, respectively, under 35 days of storage at room temperature. The higher micropore ratio and lower mean pore width of CAC were responsible for the good stability and sustained release properties of immobilized β-phenylethanol.","PeriodicalId":11233,"journal":{"name":"Digest Journal of Nanomaterials and Biostructures","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45647347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","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 Ag-modified ZnO/MWCNT nanoparticles and their application as a catalyst in the degradation of methylene blue Ag修饰ZnO/MWCNT纳米颗粒的合成及其在亚甲基蓝降解中的应用

IF 0.9 4区材料科学

Digest Journal of Nanomaterials and Biostructures Pub Date : 2023-07-01 DOI: 10.15251/djnb.2023.183.941

E. M. López Alejandro, E. Ramírez Morales, M. C. Arellano Cortaza, J. P. Morán Lázaro, G. Pérez Hernández, L. Rojas Blanco

引用次数: 0

Exfoliated carbon nitrides for corrosion prevention in radiators: Temperature-dependent corrosion analysis 散热器防腐用剥落氮化碳:温度依赖性腐蚀分析

IF 0.9 4区材料科学

Digest Journal of Nanomaterials and Biostructures Pub Date : 2023-07-01 DOI: 10.15251/djnb.2023.183.985

D. Vasudevan, A. Kumaravel, A. Murugesan, A. Mugil, B. Karthi, K. K. Kumar

{"title":"Exfoliated carbon nitrides for corrosion prevention in radiators: Temperature-dependent corrosion analysis","authors":"D. Vasudevan, A. Kumaravel, A. Murugesan, A. Mugil, B. Karthi, K. K. Kumar","doi":"10.15251/djnb.2023.183.985","DOIUrl":"https://doi.org/10.15251/djnb.2023.183.985","url":null,"abstract":"This article outlines the preparation and exfoliation of graphitic-carbon nitride (GCN) by thermal polymerization technique using urea proceeded by the hydrothermal approach for the application of corrosion resistance in radiators. The prepared sample was characterized by using various methods. X-ray powder diffraction (XRD) and Fourier-transform infrared spectroscopy (FT-IR) confirmed the purity of GCN, and Surface morphology results revealed the formation of spherical-shaped GCN. Herein, graphitic carbon nitride (GCN) was synthesized to enhance its corrosion-resistance performance on mild steel (MS) under a seawater atmosphere. The corrosion behaviour of the graphitic-carbon nitride (GCN) synthesized by the hydrothermal method was examined by conducting electrochemical corrosion tests in a 3.5% NaCl medium under three different temperatures. The excellent temperature dependant electro-catalytic activity of the prepared GCN was analysed. The hydrothermal exfoliation process highly enhances the structural, optical, and electrochemical properties like corrosion resistance and stability of the prepared GCN. This study demonstrates that hydrothermally exfoliated GCN exhibits low corrosion rates and high electrochemical corrosion resistance, which could be a potential candidate for corrosion inhibitors in radiators.","PeriodicalId":11233,"journal":{"name":"Digest Journal of Nanomaterials and Biostructures","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43365998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Al-ions effect on structural, optical, antibacterial, and photocatalytic activities of ZnO nanostructures 铝离子对ZnO纳米结构的结构、光学、抗菌和光催化活性的影响

IF 0.9 4区材料科学

Digest Journal of Nanomaterials and Biostructures Pub Date : 2023-07-01 DOI: 10.15251/djnb.2023.183.995

Z. Ullah, M. Qureshi, K. Sultana, F. Ullah, A. Khalid, N. Masood, F. Abdella, S. Elhag

引用次数: 0

Influence of Sr2+ substitution on structural, optical and catalytic properties of CoAl2O4 nanoparticles Sr2+取代对CoAl2O4纳米颗粒结构、光学和催化性能的影响

IF 0.9 4区材料科学

Digest Journal of Nanomaterials and Biostructures Pub Date : 2023-07-01 DOI: 10.15251/djnb.2023.183.915

G. Anitha, R. Jothiramalingam, M. Sukumar, A. Roniboss, S. Yuvaraj, G. Ramkumar, M. Sundararajan, S. Arokiyaraj

引用次数: 0