Advances in Natural Sciences: Nanoscience and Nanotechnology最新文献_第10页

Detection of hydrogen peroxide vapor using flexible gas sensor based on SnO2 nanoparticles decorated with multi-walled carbon nanotubes 基于多壁碳纳米管修饰的SnO2纳米颗粒柔性气体传感器检测过氧化氢蒸汽

IF 2.1

Advances in Natural Sciences: Nanoscience and Nanotechnology Pub Date : 2023-04-26 DOI: 10.1088/2043-6262/accc7d

M. Aleksanyan, A. Sayunts, G. Shahkhatuni, Z. Simonyan, V. Aroutiounian, Emma Khachatryan

{"title":"Detection of hydrogen peroxide vapor using flexible gas sensor based on SnO2 nanoparticles decorated with multi-walled carbon nanotubes","authors":"M. Aleksanyan, A. Sayunts, G. Shahkhatuni, Z. Simonyan, V. Aroutiounian, Emma Khachatryan","doi":"10.1088/2043-6262/accc7d","DOIUrl":"https://doi.org/10.1088/2043-6262/accc7d","url":null,"abstract":"In this work, a high-sensitive flexible sensor based on the SnO2 nanoparticles decorated with the multi-walled carbon nanotubes (MWCNTs) was fabricated by a simple and cost-effective centrifugation method for hydrogen peroxide vapour (HPV) detection. Morphological, composition, structural, and HPV sensing studies of the film were thoroughly conducted. Scanning electron microscopy (SEM) revealed the presence of MWCNTs in the SnO2 material and energy dispersive x-ray (EDX) elementary analysis determined the actual concentration of carbon elements (24.47 wt%) in the SnO2:MWCNTs material with pronounced peaks of C, O, and Sn. Elemental mapping analysis showed the nearly homogeneous distribution of the elements while x-ray diffraction analysis (XRD) confirmed the diffraction peaks of tin oxide and carbon. The HPV sensing behaviour of the flexible SnO2:MWCNTs sensor was investigated in the temperature range of 25 °C–150 °C towards 1.5–56 ppm HPV under ultraviolet (UV) irradiation. The flexible sensor had a fairly high response (44) to 1.5 ppm of HPV concentration at room temperature (RT). The fabricated SnO2:MWCNTs based sensor was capable of detecting extremely low concentrations of HPV, thus being a potential candidate for use in real environments.","PeriodicalId":7359,"journal":{"name":"Advances in Natural Sciences: Nanoscience and Nanotechnology","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2023-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46014153","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

Adsorption kinetics, isotherm and thermodynamics studies for the removal of cationic dyes from environmental wastewater by reduced graphene oxide adsorbent synthesized via greener way 绿色合成还原性氧化石墨烯吸附剂对环境废水中阳离子染料的吸附动力学、等温线和热力学研究

IF 2.1

Advances in Natural Sciences: Nanoscience and Nanotechnology Pub Date : 2023-03-01 DOI: 10.1088/2043-6262/acc01d

Bapan Bairy, Piu Das, Kartik Tantubay, Moni Baskey (Sen)

{"title":"Adsorption kinetics, isotherm and thermodynamics studies for the removal of cationic dyes from environmental wastewater by reduced graphene oxide adsorbent synthesized via greener way","authors":"Bapan Bairy, Piu Das, Kartik Tantubay, Moni Baskey (Sen)","doi":"10.1088/2043-6262/acc01d","DOIUrl":"https://doi.org/10.1088/2043-6262/acc01d","url":null,"abstract":"Synthetic dyes emerging from wastewater effluents result in a hazardous environment to our society, hence removal of these dye molecules from the water bodies is necessary due to their toxic nature for living beings. In our study, a straightforward one pot synthetic process is conducted to synthesize reduced graphene oxide (RGO) using Averrhoa carambola fruit extract. To confirm the formation of RGO, different characterization techniques such as Fourier transform infrared spectroscopy (FTIR), UV–Vis spectroscopy and X-Ray Diffraction (XRD) are investigated. Transmission electron microscopy (TEM) and scanning electron microscopy (SEM) are used to understand the morphology of RGO. Adsorption kinetics for pseudo-first order and pseudo-second order has been carried out for both dyes. Freundlich and Langmuir adsorption isotherm models were confirmed to describe each of the adsorption ability responses with high correlation coefficients. Maximum adsorption capacities of methylene blue (MB) and crystal violet (CV) on RGO were 52.308 mg g−1 and 31.466 mg g−1 respectively. The adsorption ability of this adsorbent is monitored by recyclability in five subsequent cycles and it is observed that up to 5 cycles, there is no significant decrease in adsorption capability. The present study showed that RGO is highly efficient in removing MB and CV dyes from environmental water bodies. The thermodynamics study for the adsorption phenomena of MB and CV dyes on RGO sheet has been investigated.","PeriodicalId":7359,"journal":{"name":"Advances in Natural Sciences: Nanoscience and Nanotechnology","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44326540","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

Characterization of electrospun polyvinylidene fluoride-loaded iron sand-based Fe3O4 nanoparticles 电纺聚偏氟乙烯负载铁砂基Fe3O4纳米颗粒的表征

IF 2.1

Advances in Natural Sciences: Nanoscience and Nanotechnology Pub Date : 2023-03-01 DOI: 10.1088/2043-6262/acbc70

W. Putri, Zakiya Nibras Sausan, N. S. Asri, E. A. Setiadi, A. Hardiansyah

引用次数: 0

Facile pore size control and low-cost synthesis of mesoporous silica nanoparticles based on rice husk 基于稻壳的介孔二氧化硅纳米颗粒的简单孔径控制和低成本合成

IF 2.1

Advances in Natural Sciences: Nanoscience and Nanotechnology Pub Date : 2023-03-01 DOI: 10.1088/2043-6262/acc456

L. Rumiyanti, Catur Destiana, Ria Oktaviani, Syafriadi, R. Marjunus, Chotimah, E. Suharyadi

引用次数: 1

Fabrication of microfluidic paper-based channels by inkjet printing process for analytical applications 通过喷墨打印工艺制造用于分析应用的微流体纸基通道

IF 2.1

Advances in Natural Sciences: Nanoscience and Nanotechnology Pub Date : 2023-03-01 DOI: 10.1088/2043-6262/acc459

N. N. Le, Duc Trinh-Minh Dinh, Phuong Hong Lam, Anh Van Thi Le, M. Le, Minh Duc Pham, Dung My Thi Dang, C. M. Dang

{"title":"Fabrication of microfluidic paper-based channels by inkjet printing process for analytical applications","authors":"N. N. Le, Duc Trinh-Minh Dinh, Phuong Hong Lam, Anh Van Thi Le, M. Le, Minh Duc Pham, Dung My Thi Dang, C. M. Dang","doi":"10.1088/2043-6262/acc459","DOIUrl":"https://doi.org/10.1088/2043-6262/acc459","url":null,"abstract":"Microfluidic paper-based channels play an important role in microfluidic paper-based analytical devices (μPADs). There are some fabrication methods which could be utilised to fabricate microfluidic channels on paper substrate. Among these methods, inkjet printing process is considered as a promising fabrication method with many advantages such as low-cost, material saving, high precision, etc. The aim of this work is to apply inkjet printing technology to fabricate paper channels of μPADs. A new design of μPAD was proposed in this paper to demonstrate how to fabricate inkjet-printed hydrophobic lines to make paper-based biosensor. Biological target of our μPADs is human chOrionic gonadotropin (hCG). Colorimetric signals from μPADs were captured by digital camera and measured by ImageJ software, which showed that these μPADs can determine hCG in the range from 1,000 to 10,000 ng ml−1. These results showed that piezoelectric inkjet printing technology can fabricate 250 μm-width hydrophobic lines on paper substrate, helping in fabricating μPADs in next applications.","PeriodicalId":7359,"journal":{"name":"Advances in Natural Sciences: Nanoscience and Nanotechnology","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45283470","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

Structural, optical properties and photocatalytic activity of spin-coated CuO thin films 自旋涂覆CuO薄膜的结构、光学性质及光催化活性

IF 2.1

Advances in Natural Sciences: Nanoscience and Nanotechnology Pub Date : 2023-03-01 DOI: 10.1088/2043-6262/acc455

D. Komaraiah, R. Sayanna

引用次数: 1

Red-emitting and antibacterial carbon dots for cellular imaging and skin wound healing 发光和抗菌碳点用于细胞成像和皮肤伤口愈合

IF 2.1

Advances in Natural Sciences: Nanoscience and Nanotechnology Pub Date : 2023-03-01 DOI: 10.1088/2043-6262/acc453

S. Karami, M. Shamsipur, A. Barati, Reza Fartootzadeh, F. Molaabasi, M. Alipour, H. Radi

引用次数: 2

Enabling stable and high-rate of an olivine-type cathode LiFePO4 for Li-ion batteries by using graphene nanoribbons as conductive agent 以石墨烯纳米带为导电剂，制备出稳定、高倍率的锂离子电池用橄榄石型正极LiFePO4

IF 2.1

Advances in Natural Sciences: Nanoscience and Nanotechnology Pub Date : 2023-03-01 DOI: 10.1088/2043-6262/acc734

T. T. Nguyen, Nhu Quynh Nguyen, Duong Thai, Tu Doanh Tieu, V. Tran, M. Le

引用次数: 0

Structural, magnetic and antibacterial studies of gadolinium doped cobalt ferrite nanoparticles synthesized at low temperature 低温合成掺钆钴铁氧体纳米颗粒的结构、磁性和抗菌研究

IF 2.1

Advances in Natural Sciences: Nanoscience and Nanotechnology Pub Date : 2023-03-01 DOI: 10.1088/2043-6262/acc01c

R. Anitha Reddy, A. Venkateswara Rao, B. Rajesh Babu, K. R. Rama Rao, V. Raghavendra

{"title":"Structural, magnetic and antibacterial studies of gadolinium doped cobalt ferrite nanoparticles synthesized at low temperature","authors":"R. Anitha Reddy, A. Venkateswara Rao, B. Rajesh Babu, K. R. Rama Rao, V. Raghavendra","doi":"10.1088/2043-6262/acc01c","DOIUrl":"https://doi.org/10.1088/2043-6262/acc01c","url":null,"abstract":"In this work structural, magnetic and antimicrobial studies of gadolinium (Gd) doped cobalt ferrite nanopowder samples were synthesised through facile auto-combustion route using citric acid as combustion agent. The pristine nanopowders were sintered at 600 °C. X-ray diffraction (XRD), infrared spectroscopy (IR) measurements indicated the formation of a single spinel phase. The lattice constant gradually increased from 8.3801 Å to 8.3915 Å with increasing Gd concentration. The average crystallite size varied from 54 nm to 42.7 nm. The correlation between the cation distribution from XRD and the magnetic properties is discussed. The substitution of Gd ions significantly reduced the magnetisation from 60.6 to 36.6 emu g−1 and increased the coercivity. Antimicrobial activities of pure and Gd substituted cobalt ferrite are carried out against Gram-positive (Bacillus subtilis) and Gram-negative (Escherichia coli, Pseudomonas aeruginosa) and also against fungi strain (Aspergillus niger) pathogens, suggesting that Gd substitution significantly improves the activity of cobalt ferrite nanopowders.","PeriodicalId":7359,"journal":{"name":"Advances in Natural Sciences: Nanoscience and Nanotechnology","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46853784","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

A comparative photocatalytic degradation study of cationic and anionic dyes using ZnIn2S4 photocatalyst ZnIn2S4光催化剂对阳离子和阴离子染料的光催化降解比较研究

IF 2.1

Advances in Natural Sciences: Nanoscience and Nanotechnology Pub Date : 2023-03-01 DOI: 10.1088/2043-6262/acc732

M. Chand, Swapnil Barthwal, A. Rawat, M. Khanuja, S. Rawat

{"title":"A comparative photocatalytic degradation study of cationic and anionic dyes using ZnIn2S4 photocatalyst","authors":"M. Chand, Swapnil Barthwal, A. Rawat, M. Khanuja, S. Rawat","doi":"10.1088/2043-6262/acc732","DOIUrl":"https://doi.org/10.1088/2043-6262/acc732","url":null,"abstract":"Semiconductor mediated photocatalysis has emerged as a promising solution for dye degradation and environmental remediation. Zinc Indium Sulfide (ZnIn2S4, ZIS) is a benign, eco-friendly, visible-light-responsive photocatalyst, exhibiting excellent optoelectronic properties. In this work, we present a scalable, low temperature and template-free chemical aqueous solution method for the synthesis of ZIS. The obtained powder sample was used for a comparative dye degradation study of cationic (Malachite green) and anionic (Congo red) dye. The higher photocatalytic efficiency of ZIS is due to the higher BET surface area (55.042 m2 g−1) and low band gap (2.3 eV). Under Sunlight, almost 80 percent degradation occurs within 20 min of the experiment for both Malachite green (MG) and anionic Congo red (CR) dye, outperforming previously reported results. Scavenger studies were used to figure out the radicals involved in photocatalytic mechanics and to come up with viable photocatalytic degradation routes. The reusability and stability of ZIS were carried out up to the 5th cycles. Our result revealed that ZIS possesses high stability, reusability, and efficient potential to be an effective dye degradation photocatalyst.","PeriodicalId":7359,"journal":{"name":"Advances in Natural Sciences: Nanoscience and Nanotechnology","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47236268","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