Nano Futures最新文献_第4页

First report on onsite temperature based recovery of quenched chemiluminescence signal from graphenized μPADs: validation by catechins radical scavenging 石墨化μ pad猝灭化学发光信号的现场温度回收:儿茶素自由基清除验证

IF 2.1 4区材料科学

Nano Futures Pub Date : 2022-10-25 DOI: 10.1088/2399-1984/ac9d78

Pavar Sai Kumar, Paul A. Advincula, S. Goel

{"title":"First report on onsite temperature based recovery of quenched chemiluminescence signal from graphenized μPADs: validation by catechins radical scavenging","authors":"Pavar Sai Kumar, Paul A. Advincula, S. Goel","doi":"10.1088/2399-1984/ac9d78","DOIUrl":"https://doi.org/10.1088/2399-1984/ac9d78","url":null,"abstract":"Graphene-based materials are excellent acceptors of the CRET phenomenon. Due to the presence of π -conjugated planar structure, these materials were reported to quench the chemiluminescence (CL) signal. Based on this fact, herein, for the first time, the recovery of quenched CL signal from different graphene-based materials is successfully obtained through the catalytic activity of onsite temperature. The maximum recovery of a quenched signal at an optimum temperature of 70 ∘C was 1440% from the 10 mg ml−1 reduced graphene oxide paper analytical devices. The recovery of flash graphene and laser induced graphene materials were found to be 895% and 521%, respectively, for the same conditions via the generation of π -conjugated carbon radicals. Catechin, an antioxidant, was analyzed from 0.1 nM to 500 nM to interpret the generation of carbon radicals from graphenized materials. The proposed smartphone-enabled onsite heating recovery model was validated with the lower limit of 94 pM (27.3 pg ml−1) of catechin concentration without advanced photodiodes or instrumentation. The validation was performed in real samples of green tea (1 and 2). This method of CL recovery can be a future model for indicating the purity of graphene-based materials without using advanced instrumentations.","PeriodicalId":54222,"journal":{"name":"Nano Futures","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2022-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47654687","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: 2

NiCo2O4@V2O5 nanobelts as electrode materials for efficient electrochemical charge storage NiCo2O4@V2O5纳米带作为高效电化学电荷存储的电极材料

IF 2.1 4区材料科学

Nano Futures Pub Date : 2022-10-24 DOI: 10.1088/2399-1984/ac9d12

D. K. Mohapatra, M. Sahoo, S. Praharaj, D. Rout

引用次数: 0

The effect of Na doping on layered LiNi1/3Co1/3Mn1/3O2 single-crystal structure as a cathode for lithium-ion batteries 钠掺杂对锂离子电池正极层状LiNi1/3Co1/3Mn1/3O2单晶结构的影响

IF 2.1 4区材料科学

Nano Futures Pub Date : 2022-10-19 DOI: 10.1088/2399-1984/ac9bb0

Dongsheng Yu, Jili Li, Zhiyu Min, Chunjuan Tang, Peiguo Meng, Baotai Chen

{"title":"The effect of Na doping on layered LiNi1/3Co1/3Mn1/3O2 single-crystal structure as a cathode for lithium-ion batteries","authors":"Dongsheng Yu, Jili Li, Zhiyu Min, Chunjuan Tang, Peiguo Meng, Baotai Chen","doi":"10.1088/2399-1984/ac9bb0","DOIUrl":"https://doi.org/10.1088/2399-1984/ac9bb0","url":null,"abstract":"A cathode with single-crystal structure for Li-ion batteries is shown to provide stable cycle performance because of its integrated crystal structure and smaller internal stress. Here, Na+ ions with larger radius are doped into LiNi1/3Co1/3Mn1/3O2 (LNCMO) single-crystal nanoparticles through a simple sol–gel method to further improve the rate capability. Different amounts of Na doping are considered to illustrate the cooperative effect of single-crystal structure and Na doping. The results indicate that a Li0.9Na0.1Ni1/3Co1/3Mn1/3O2 cathode has a discharge capacity of 193.7 mAh g–1 at 0.2 C, much higher than the 174.8 mAh g–1 of its undoped counterpart. After 50 cycles, the capacity retention is enhanced from 71.3% for undoped LNCMO to 89.2% for Li0.9Na0.1Ni1/3Co1/3Mn1/3O2. At the same time, Li0.9Na0.1Ni1/3Co1/3Mn1/3O2 delivers a discharge capacity of 137.9 mAh g–1 at 10 C, about twice the capacity of LNCMO. Na ions doped into the lattice can magnify the distances between lithium layers and act as pins for more stable structure and faster kinetics of Li+-ion diffusion.","PeriodicalId":54222,"journal":{"name":"Nano Futures","volume":"6 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2022-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41664021","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: 3

Facile copper ferrite/carbon quantum dot magnetic nanocomposite as an effective nanocatalyst for reduction of para-nitroaniline and ortho-nitroaniline 易变铜铁氧体/碳量子点磁性纳米复合材料作为对硝基苯胺和对硝基苯胺还原的有效纳米催化剂

IF 2.1 4区材料科学

Nano Futures Pub Date : 2022-10-13 DOI: 10.1088/2399-1984/ac9a19

Samin Naghash-Hamed, N. Arsalani, Seyed Borhan Mousavi

{"title":"Facile copper ferrite/carbon quantum dot magnetic nanocomposite as an effective nanocatalyst for reduction of para-nitroaniline and ortho-nitroaniline","authors":"Samin Naghash-Hamed, N. Arsalani, Seyed Borhan Mousavi","doi":"10.1088/2399-1984/ac9a19","DOIUrl":"https://doi.org/10.1088/2399-1984/ac9a19","url":null,"abstract":"Para-nitroaniline (PNA) and ortho-nitroaniline (ONA) are highly toxic contaminants in aqueous solution and must be treated. In the current investigation, novel magnetic nanocomposites containing copper ferrite (CuFe2O4) and gelatin-derived carbon quantum dots (CQDs) were successfully synthesized. The prepared nanocatalyst was characterized by scanning electron microscopy, x-ray diffraction, transmission electron microscopy, Brunauer–Emmet–Teller (BET), Fourier transform infrared and ultraviolet–visible techniques. The mesoporous structure of the CuFe2O4/CQD nanocomposite was shown using the BET/Barrett–Joyner–Halenda technique. The catalytic performance of the nanocatalyst during the reduction of PNA and ONA was assessed in an aqueous medium at 25 °C. The complete reduction of PNA and ONA using the CuFe2O2/CQDs nanocomposite occurred in 13 s and 35 s, respectively. The pseudo-second-order rate constant (K app) was obtained as 2.89 × 10−1 s−1 and 9.3 × 10−2 s−1 for reducing PNA and ONA, respectively. Moreover, the magnetic nanocatalyst was easily separated from the reaction solution and recycled for up to six consecutive cycles without significant loss of catalytic activity.","PeriodicalId":54222,"journal":{"name":"Nano Futures","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2022-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43238137","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: 31

Metal halide perovskite nanocrystals for x-ray scintillators 用于x射线闪烁体的金属卤化物钙钛矿纳米晶体

IF 2.1 4区材料科学

Nano Futures Pub Date : 2022-09-27 DOI: 10.1088/2399-1984/ac9568

Handong Jin, Shihe Yang, M. Iqbal, Yu-Jia Zeng

引用次数: 3

Opportunities and challenges for antimicrobial nanostructured materials in the management of skin infections 抗菌纳米结构材料在皮肤感染管理中的机遇和挑战

IF 2.1 4区材料科学

Nano Futures Pub Date : 2022-09-19 DOI: 10.1088/2399-1984/ac92f1

M. Arruebo

引用次数: 0

Layer-structured NiFe nanosheets on CoNi nanowires for enhanced oxygen evolution reaction 在CoNi纳米线上层状结构的NiFe纳米片增强析氧反应

IF 2.1 4区材料科学

Nano Futures Pub Date : 2022-09-07 DOI: 10.1088/2399-1984/ac9022

Yichuan Guo, Zizhen Gong, Hang Yu, Guihua Liu, Zisheng Zhang, Changcheng Wu, Jingde Li

引用次数: 0

Lithography-free fabrication and optical characterizations of nanotextured nickel dewetting thin film for broadband absorbers 用于宽带吸收体的纳米结构镍脱湿薄膜的无光刻制备及其光学特性

IF 2.1 4区材料科学

Nano Futures Pub Date : 2022-08-30 DOI: 10.1088/2399-1984/ac8dce

Rongpeng Fang, Zhenshan Yu, Yu‐Sheng Lin

{"title":"Lithography-free fabrication and optical characterizations of nanotextured nickel dewetting thin film for broadband absorbers","authors":"Rongpeng Fang, Zhenshan Yu, Yu‐Sheng Lin","doi":"10.1088/2399-1984/ac8dce","DOIUrl":"https://doi.org/10.1088/2399-1984/ac8dce","url":null,"abstract":"Plasmonic structures based on metamaterials are widely studied and have been extensively researched in various applications. However, the fabrication of regular nanostructures always requires expensive equipment and a strict working environment, lacking the ability for large-scale fabrication. In this study, we propose and demonstrate simple nanotextured nickel (Ni) dewetting thin films on silicon (Si) and quartz substrates by using different thermal annealing temperatures. They achieve a broadband absorption range with near zero reflectivity due to the standing-wave resonances of surface plasmon polariton, and the resonance is relative to the material of the substrate. The topographies of the nanotextured Ni dewetting thin films vary with thermal annealing temperatures at different dewetting stages. The corresponding reflection and absorption resonant wavelengths of the devices are redshifted by increasing the thermal annealing temperatures. The main absorption resonances are at wavelengths of 610 nm, 580 nm, 625 nm, and 660 nm on the Si substrate. While the reflectivity of the sample around the visible range is lower than 40%, it is suitable for broadband absorption for green and yellow spectra. Moreover, the resonant wavelengths are blueshifted by increasing the incident angles. The demonstrated devices are also sensitive to the ambient media. The reflection resonant wavelengths are redshifted by increasing the environmental refraction indexes. The corresponding reflected colors are changed from green to yellow . These devices exhibit a highest sensitivity of 500 nm RIU−1 and can be used for color sensors. This proposed approach has large-scale fabrication capacity and provides promising applications for broadband absorbers, reflective displays, environmental sensors, and other optoelectronic fields.","PeriodicalId":54222,"journal":{"name":"Nano Futures","volume":" ","pages":""},"PeriodicalIF":2.1,"publicationDate":"2022-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48328655","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: 8

Application status of zeolitic imidazolate framework in gas sensors 沸石咪唑酯骨架在气体传感器中的应用现状

IF 2.1 4区材料科学

Nano Futures Pub Date : 2022-07-27 DOI: 10.1088/2399-1984/ac84b5

Bo-Ting Huang, Yanqiong Li, Wen Zeng

引用次数: 2

A short review on transition metal chalcogenides/carbon nanocomposites for energy storage 过渡金属硫族化合物/碳纳米复合储能材料综述

IF 2.1 4区材料科学

Nano Futures Pub Date : 2022-07-26 DOI: 10.1088/2399-1984/ac8460

Parisa Salarizadeh, Mohadese Rastgoo-Deylami, M. Askari, Khadijeh Hooshyari

引用次数: 2