CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Weifang Bu,Yajing Yan,Ping Liu,Ting Wang,Shaoqing Wang,Yang Yue,Nannan Zhu,Xuanyu Zhu,Luyi Yang,Dedan Mou,Xue Yu
Lead-free halide perovskites have shown promising application for indirect X-ray detection as fascinating scintillator. The fabrication of pixelated scintillator films leveraging directional confinement allows high-resolution imaging, yet process complexity and the potential crystal structure damage pose challenges that compromises the corresponding scintillator performance. In this work, a facile in-situ strategy for growing scintillation perovskite of Cs 5 Cu 3 Cl 6 I 2 within anodic aluminum oxide (AAO) membrane is developed as scintillator Cs 5 Cu 3 Cl 6 I 2 @AAO film. The as-fabricated pixelated scintillator array with an enhanced light directional confinement for high-resolution X-ray imaging is demonstrated. The corresponding film achieves a spatial resolution of approximately 20 lp mm −1 and a detection limit of 0.152 Gy·s −1 . Moreover, the Cs 5 Cu 3 Cl 6 I 2 @AAO film performs excellent stability under long-term X-ray irradiation, making it a reliable option for cost-effective pixelated indirect X-ray imaging.
研究领域:
材料科学
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医学影像
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Materials Science & Engineering C-Materials for Biological Applications
·
2017
·
IF 4.164
Cunfeng Song,Meijie Wang,Xin Liu,He Wang,Xiaoling Chen,Lizong Dai
Surface-initiated reversible addition-fragmentation chain transfer (RAFT) polymerization has been utilized to fabricate high-capacity strong anion-exchange (AEX) membrane for the separation of protein. By means of RAFT polymerization, quaternized poly(3-(methacrylamidomethyl)-pyridine) brushes formed 3-dimensional nanolayers on the surface of porous anodic aluminum oxide (AAO)-silica composite membrane. The surface properties of the membranes were analyzed by SEM, water contact angle, ATR-FTIR, XPS and TGA. To investigate the adsorption performance, the new AEX membranes were applied to recover a model protein, ovalbumin (OVA). High adsorption capacities of 95.8 mg/g membranes (static) and 65.3 mg/g membranes (dynamic) were obtained at ambient temperature. In the further studies, up to 90% of the adsorbed OVA was efficiently eluted by using phosphate buffer-1 M NaCl as elution medium. The successful separation of OVA with high purity from a mixture protein solution was also achieved by using the AEX membranes. The present study demonstrated that under mild reaction condition, RAFT polymerization can be used to fabricate ion-exchange membrane which has many remarkable features, such as high capacity and selectivity, easy elution and so on.
研究领域:
材料科学
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生物化学
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DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2019
·Vol. 44
·期 1
·64-71
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IF 3.069
Xiande Yang,Xudong Yang,Tinglan Wang,Boyou Wang,Qiao Chen,Yongqian Wang,Deliang Liu
Nanomaterials have been widely used in the fields of photocatalysis, sensors, and solar cells due to their excellent properties. However, nanomaterials are mainly prepared under nonlimited conditions. With the development of biomimetic nanochannels, their gating properties and chemical stability have come to the fore. Inspired by the potential applications of biomimetic nanochannels, it is significant to synthesize nanomaterials inside biomimetic nanochannels under limited conditions for facilitating newer applications. Therefore, we used an anodic aluminum oxide (AAO) template with different pore diameters as the limited condition to synthesize CdS structures via different synthesis methods. We successfully synthesized CdS nanoparticles and flower-like CdS structures in AAO nanochannels by the electrochemical-assisted method or solution impregnation method. Field-emission scanning electron microscope (FESEM) results revealed that the CdS nanoparticles would agglomerate together to form irregular bulks with an increase in the applied voltage; flower-like CdS structures would block the AAO nanochannels for longer reaction times and higher concentrations. Energy-dispersive spectrometer (EDS) and X-ray diffraction (XRD) results revealed that these structures self-assembled into AAO nanochannels were, in fact, CdS. In conclusion, these methods can provide important guidelines for nanomaterial synthesis in AAO nanochannels.
研究领域:
纳米技术
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材料科学
·
化学
·
电化学
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产品关联
DOI
高影响因子
Sensors & Diagnostics
·
2023
·Vol. 2
·期 5
·1292-1301
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IF 0
Yu Lu,Ruihua Fei,Jiahe Zhang,Geng Zhu,Xiufang Mo,Yu Wan,Yan Huang,Qingjiang Sun,Dianhuai Meng,Xiangwei Zhao
The clinical symptoms of coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), are similar to those of influenza A infection. Therefore, accurate diagnosis of SARS-CoV-2 and influenza A in the early infection stage is essential for appropriate clinical treatment. In this work, a vertical flow assay (VFA) device based on Au@Ag@Au core–shell SERS nanotags and anodic aluminum oxide (AAO) was proposed to diagnose and distinguish between SARS-CoV-2 and influenza A at the same time. Antibodies paired with SARS-CoV-2 and influenza A were immobilized simultaneously on the AAO. In the presence of SARS-CoV-2 or influenza A antigens, sandwich immune-complexes were formed on the AAO and the corresponding SERS signals of nanotags could be detected. The whole detection process took only about 15 minutes, taking comparable or even shorter time than reported POCT antigen assays. The detection limit reached 0.47 pg ml−1 for SARS-CoV-2 nucleocapsid protein (NP) and 0.62 pg ml−1 for influenza A antigen. The clinical feasibility of the proposed VFA device was validated by testing clinical throat swab samples (3 SARS-CoV-2 positive samples and 17 negative samples). Real sample analysis indicated a well-distinguished positive/negative sample group. Conceptually, this VFA device is a potential POCT diagnosis tool for determining if a suspected patient is infected with SARS-CoV-2 or influenza A.
研究领域:
医学诊断
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分析化学
·
纳米技术
·
公共卫生
✓ 已验证
DOI
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2021
·
IF 4.291
Mengyang Lu,Qi Zhang,Zhicheng Zhang,Xueqi Wang,Bing Yan,Yongqian Wang
There are a variety of biological ion channels in organisms, which change under the influence of the environment and regulate the material transport at both ends of the biofilm. Inspired by this, a large number of studies on biomimetic nanochannels have been carried out. The lack of selective specificity and detection sensitivity are considered as main drawbacks in biomimetic nanochannels, and the combination of nanomaterials and biomimetic nanochannels is one of solutions. In this research, a confined self-assembly system composed of anodic aluminum oxide (AAO) templates and ZnS nanoparticles was fabricated by a negative pressure filtration method. Besides, L- Cysteine ( L- Cys) and D- Cysteine ( D- Cys) were modified into the confined self-assembly system by ultraviolet irradiation to enhance the sensitivity for biological molecules response. The confined self-assembly system showed specific selection of L- Cys and high sensitivity to biological molecules response. This work not only synthesized ZnS nanoparticles in biomimetic nanochannels controllably but also provided a new way of studying how to utilize nanomaterials to improve the response sensitivity of biomolecules in biomimetic nanochannels.
研究领域:
纳米技术
·
仿生学
·
材料科学
·
生物传感
✓ 已验证
DOI
高影响因子
FOOD CHEMISTRY
·
2019
·
IF 5.399
Bingyong Lin,Palanisamy Kannan,Bin Qiu,Zhenyu Lin,Longhua Guo
Simple, rapid, convenient, and economical surface enhanced Raman scattering (SERS) substrate is developed for on-site evaluation of Aflatoxin B 1 (AFB 1 ) in food matrix using handheld Raman Spectrometer. Self-assembly of gold nanobipyramids (Au NBPs) into the nanoholes of anodic aluminum oxide (AAO) template/pattern using ‘drop-dry’ approach provides a reliable pathway for the rapid fabrication of highly active and uniform SERS substrate. It shows enhanced and reproducible SERS signals towards the probe molecule, 4-aminothiophenol (4-ATP) with a relative standard deviation (RSD) of less than 10% and an average enhancement factor (EF) of 1 × 10 8 . For practical application, the proposed method is demonstrated for the detection of aflatoxin B 1 (AFB 1 ) in peanut extracts. The results show that the AFB 1 in peanut extracts can be identified within 1 min, with a limit of detection of 0.5 μg/L. Compared with conventional ELISA based AFB 1 analysis, our method is much more efficient (1 min versus >30 min).
研究领域:
分析化学
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食品安全
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纳米技术
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光谱学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2022
·
IF 9.221
Dan Wang,Guanchen Xu,Xingshuang Zhang,Hongyu Gong,Li Jiang,Guanliang Sun,Yu Li,Guoran Liu,Yong Li,Shikuan Yang,Xiu Liang
A novel approach is developed to fabricate an ultra-thin layered flexible wearable Surface-Enhanced Raman Scattering (SERS) substrate named silk fibroin-anodic aluminum oxide-Au nanoparticles (SF-AAO-Au), which consists of biocompatible SF film as flexible support, ultrathin cavity AAO as template, and plasmonic Au NPs. The SF-AAO-Au sensor exhibits excellent SERS mechanical flexibility, homogeneity and sensitivity for its effective enhancement ability and highly ordered 3D periodic porous particle-in-cavity (PIC) arrays structure. The humidity-driven interface structure of biocompatible SF film provides good skin adhesion under various fitness tests and excellent mechanical flexibility as a wearable SERS sensor on natural skin (deformation within 5%). The flexible SF-AAO-Au can be developed as quantitative sweat glucose sensor in the concentration range of 10 − 7 to 10 − 3 M with a limit of detection (LOD) of 1.68 × 10 − 7 M and qualitative human sweat glucose detection ability. This SF-AAO-Au substrate can be further designed as lab-on-glove SERS sensing platform for ultrasensitive (LOD ~5.7 ppt) quantitative on-site detection of agricultural residues in a wide range. The effective dual-functional SERS wearable sensor realized for the first time paves a new way to develop smart wearable and non-destructive devices in environmental safety, forensic identification and point-of-care testing (POCT) diagnosis of physiological disease.
研究领域:
材料科学
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纳米技术
·
可穿戴技术
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分析化学
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生物医学工程
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2024
·
IF 4.3
Jun Dong,Chenlu Li,Yan Wang,Yimeng Fan,Qingyan Han,Wei Gao,Yongkai Wang,Kaili Ren,Jianxia Qi,Enjie He
In the study of surface-enhanced Raman scattering (SERS) processes, a simple and fast approach is needed to ensure the large-scale preparation of SERS substrates. This article uses anodic aluminum oxide (AAO) as a template to assemble gold nanoparticles (Au NPs) into an ordered array. By changing the pore size of AAO and silanizing the pores, the number and density of Au NPs entering the pores through liquid–liquid two-phase self-assembly (LLSA) can be effectively regulated. Using Rh6G (Rhodamine 6G) and CV (Crystal Violet) molecules as probe molecules, substrate sensitivity was evaluated with an enhancement factor of up to 6.34 × 10 7 . In addition, the uniformity of the substrate is good, with a relative standard deviation (RSD) of 9.94%, and the logarithmic concentration and the Raman signal presented significant linear correlations R 2 was 0.997 and 0.985, respectively. The detection limit of the substrate for APM (aspartame) as a solvent is as low as 0.0078 g/L. Finally, the substrate was subjected to high sensitivity testing on two types of beverages containing APM sold, proving the practicality of the substrate. It is expected to achieve simple and rapid detection in food additive trace detection in the future.
研究领域:
材料科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Frontiers in Materials
·
2019
·
IF 2.689
Yan Gu,Faqiang Zhang,Zhifu Liu,Yongxiang Li,Guanyu Chen,Bo Wang
Transition metal alloys are good candidate electrodes for non-enzymatic glucose sensors due to their low cost and high performance. In this work, we reported the controllable electrodeposition of CoNiCu alloy nanotubes electrodes using anodic aluminum oxide (AAO) as template. Uniform CoNiCu alloy arrays of nanotubes about 2 μm in length and 280 nm in diameter were obtained by optimizing the electrodeposition parameters. Scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS) measurements indicated that the as-prepared alloy nanotubes arrays are composed of 64.7 wt% Co-19.4 wt% Ni-15.9 wt% Cu. Non-enzymatic glucose sensing measurements indicated that the CoNiCu nanotubes arrays possessed a low detection limit of 0.5 μM, a high sensitivity of 791 μA mM−1 cm−2 from 50 to 1,551 μM and 322 μA mM−1 cm−2 from 1,551 to 4,050 μM. Besides, they showed high reliability with the capacity of anti-jamming. Tafel plots showed that alloying brought higher exchange current density and faster reaction speed. The high performance should be due to the synergistic effect of Co, Ni, and Cu metal elements and high surface area of nanotubes arrays.
研究领域:
材料科学
·
分析化学
✓ 已验证
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2026
·
IF 4.6
Jun Dong,Yimeng Fan,Ziqing Fang,Guanwei Feng,Qingyan Han,Chengyun Zhang,Rong Chen,Jinchao Miao,Jianxia Qi,Wei Gao
Surface-enhanced Raman scattering (SERS) has emerged as a powerful tool for food safety analysis. We present a three-dimensional particle-in-cavity substrate that utilizes plasmonic cavity resonances for highly sensitive detection. Fabricated by a convenient transfer of AuNPs onto an anodic aluminum oxide (AAO) template, this design facilitates scalable production. The synergistic cavity-particle interplay yields a 4.24-fold SERS enhancement over a conventional flat Si substrate. The substrate demonstrated high sensitivity with a Rh6G enhancement factor of 1.77 × 10(Raman and Krishnan, 1928 [ 9 ] ) , excellent uniformity showcasing relative standard deviations of 9.17% for Rh6G and 8.54% for crystal violet, and strong log-concentration linearity with correlation coefficients reaching 0.988 for Rh6G and 0.989 for Crystal Violet. It maintained 60% of its initial signal intensity after 30 days of storage and achieved an aspartame detection limit as low as 0.0078 g/L, demonstrating its excellent detection capability.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2023
·Vol. 12
·期 5
·2760-2770
·
IF 11.9
Binchao Shi,Yue Wang,Ertai Liu,Shilin Mei,Chang-Jiang Yao
The fast capacity decay and limited cycling life are the two main issues that hinder the practical applications of lithium–sulfur batteries. They are mainly caused by the shuttle effect of polysulfide species and the growth of big lithium dendrites occurring separately on the cathode and anode sides. To simultaneously tackle these problems, we explore a multifunctional interlayer integrating the aligned nanochannel structure of an anodic aluminum oxide (AAO) membrane with porous 1T MoS2 nanotubes (namely MoS2@AAO). Benefiting from the high electronic conductivity, sulfiphilic and lithiophilic properties of 1T MoS2, and the positive surface plus low tortuosity of the straight channels of AAO, the designed interlayer not only guarantees rapid ion/electron transfer and efficacious suppression of the polysulfide shuttle, but also achieves uniform and stable lithium deposition during cycling. Consequently, the MoS2@AAO interlayer exhibits a high capacity retention of 99.6% at 0.2C after 500 cycles and 90.6% at 1.0C after 1000 cycles. The prototype cathode with a sulfur loading of 5 mg cm−2 was also investigated, which exhibited over 96% retention of the initial discharge capacity at 0.1C after 50 cycles. This work provides a new solution for simultaneously stabilizing both the lithium anode and sulfur cathode via an integrating approach.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Plasmonics
·
2023
·
IF 3
Dong Jun,Li Chenlu,Wang Yan,Cao Yi,Fan Yimeng,Han Qingyan,Gao Wei,Wang Yongkai,Qi Jianxia
Surface-enhanced Raman scattering (SERS) is widely employed because it offers quick, microscopic, and traceless detection. This study used high-voltage and low-voltage ultrasonic oscillation to embed gold-silver nanoparticles (Au-Ag NPs) into the pores of chemically modified ultrathin anodic alumina (AAO) films, resulting in a highly sensitive three-dimensional SERS substrate. We improved the substrate’s stability and Raman activity by adjusting the particle alloy ratio. For the substrate in this alloy ratio, the Raman signal of probe molecules (Rh6G) adsorbed on the substrate surface is enhanced. the enhancement factor (EF) was as high as 1.40 × 10 7 , the relative standard deviation (RSD) of 10.6%, and the concentration of Rh6G shows a linear relationship with Raman intensity, with a linear correlation coefficient of 0.961. In addition, we evaluated the substrate’s detection effect on thiram molecules. It has been proven that this structure has good practicality and high sensitivity as a Raman enhanced substrate.
研究领域:
纳米技术
·
材料科学
·
分析化学
·
表面科学
✓ 已验证
产品关联
DOI
高影响因子
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