ENVIRONMENTAL RESEARCH
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2021
·
IF 6.498
Xueqian Yan,Jin Qian,Xiangjun Pei,Lihong Zhou,Rui Ma,Mingkuan Zhang,Yufei Du,Linqin Bai
In this study, a magnetic NiFe 2 O 4 /MWCNTs/BiOI composite were fabricated and applied for enhanced and sustainable photocatalytic degradation of doxycycline (DOX) under UV light irradiation. The as-synthesized material was characterized by a series of techniques and its photocatalytic property was assessed via a couple of batch tests. With the pH at 3.0 and NiFe 2 O 4 /MWCNTs/BiOI loading of 1.5 g L −1 , the DOX degradation (at 45 mg L −1 ) efficiency could achieve 92.18% with the reaction rate constant k of 0.0072 min −1 . The high mineralization of DOX suggests the strong oxidation of both the parent pollutant and the intermediary products in the ternary catalyst system. DRS spectra indicated that compared with BiOI , the introduction of NiFe 2 O 4 and MWCNTs reduces the band gap energy of the NiFe 2 O 4 /MWCNTs/BiOI. The quenching test illustrates that h + , OH and O 2 − all functioned in the developed photocatalytic system, where O 2 − and h + play the dominant roles in DOX degradation. The more efficient electron-h + separation and more oxidizing species induced by UV light resulted in the significant improvement of DOX abatement in the developed coupling system compared with that on either BiOI or NiFe 2 O 4 /MWCNTs. The magnetic property of NiFe 2 O 4 /MWCNTs/BiOI enables its easy separation of the solid catalyst from the reaction solution and the sustainable application in the photocatalysis . Based on the intermediates of DOX decomposition identified by UPLC-MS, the possible degradation routes were proposed accordingly.
研究领域:
环境化学
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材料科学
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光催化
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水污染治理
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纳米复合材料
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药物降解
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DOI
高影响因子
OPTICS AND LASER TECHNOLOGY
·
2026
·
IF 5.2
Like Li,Shunye Huang,Yi Li,Xiaoman Chen,Qiwei Li,Hui Tang,Xuqiang Wu,Yong Zhao
Due to its narrow treatment window, the vancomycin concentration in the patient’s body needs to be monitored regularly to guide dose optimization and ensure safety and efficacy. Here, we developed a fiber-optic surface plasmon resonance (SPR) vancomycin sensor based on gold nanoparticles (AuNPs)/multiwalled carbon nanotubes (MWCNTs)/DNA aptamer synergistic modification. AuNPs can effectively enhance the local electromagnetic field and plasmon resonance effects, while MWCNTs have a strong electronic conductivity and a high specific surface area. The synergistic effect of the two can achieve dual amplification of the SPR signal, thereby improving the sensitivity. Vancomycin aptamer can specifically capture vancomycin molecules and induce spatial conformational changes, thereby increasing the effective refractive index. Experimental results confirmed that within 30 μM–400 μM, the sensitivity of vancomycin detection is as high as 0.0527 nm/μM, and the detection limit is 18.11 μM. Moreover, the vancomycin sensor exhibits excellent stability and specificity. The vancomycin sensor is low-cost, easy to use, and has the potential to be applied for rapid and accurate determination of vancomycin in clinical settings.
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高影响因子
IEEE SENSORS JOURNAL
·
2020
·Vol. 20
·期 23
·14118-14125
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IF 3.073
Yanlin Zhang,Xin Guo,Wei Wang,Li Chen,Li Liu,Hao Liu,Yin He
Strain sensors based on silver nanowires (AgNWs) have attracted much attention due to their wide application of electronic skin, smart textiles, and health monitoring. In this work, we report a flexible strain sensor based on an Ecoflex flexible substrate. AgNWs and Multi-walled carbon nanotubes (MWCNTs) doped as a conductive material. The excellent ductility and elongation at break in Ecoflex, as well as excellent heat resistance and impact resistance, can increase the test range and increase the sensing range of the sensor. AgNWs-based sensors enhance the sensitivity of the sensor to 118.19 while improving linearity and stability and reducing hysteresis. In addition, strain sensors can be utilized to monitor body movements such as finger flexion, leg movements, and so on. In this work, smart gloves are used to monitor finger movements using flexible strain sensors, which show its great potential for wearable electronics applications.
研究领域:
材料科学
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生物医学工程
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高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2019
·
IF 6.282
Xun Fan,Guangcheng Zhang,Jiantong Li,Zhengyang Shang,Hongming Zhang,Qiang Gao,Jianbin Qin,Xuetao Shi
The functional multi-walled carbon nanotubes (fMWCNTs) and liquid carboxy-terminated butadiene-acrylonitrile copolymer (CTBN) were incorporated into epoxy (EP) resin to fabricate thermosetting composites, which were foamed using supercritical carbon dioxide (SCCO 2 ). The foamability, electrical conductivity and electromagnetic interference (EMI) shielding effectiveness (SE) of foams were discussed. Owing to the heterogeneous nucleation caused by carbon nanotube, the average cell size of ∼400nm and cell density of ∼10 12 cells/cm −3 were obtained, resulting in the excellent foamability of EP-CTBN-fMWCNTs systems. The biaxial stretching during cell growing facilitates fMWCNTs to align, forming 2D conductive networks, and resulting in the improvement of electrical property. The composite foam with fMWCNTs content of 5.0 wt% possesses EMI SE of 22.90 dB and specific EMI SE of 37.54 dB/(g cm 3 ), which attributes to its high electrical conductivity of 0.43 S/m and cellular morphologies that made electromagnetic microwaves multi-reflect from one cell to another and then be attenuated by conductive filler.
研究领域:
材料科学
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复合材料
·
电磁学
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DOI
高影响因子
SENSORS
·
2026
·Vol. 26
·期 5
·1724
·
IF 4
Jun Zheng,Wenting Xu,Wen Ding,Yalong Li,Binyou Xie,Jinhui Xu,Kang Li,Liang Chen,Yan Fan,Songwei Zeng
The flexible foam piezoresistive sensor demonstrates significant potential for wearable strain-sensing applications due to its substantial deformation capacity, excellent flexibility, and cost effectiveness. However, conventional flexible foam piezoresistive sensors often struggle to simultaneously achieve high sensitivity, a wide pressure detection range, fast response and long-term stability. This paper employed a glucose-based sugar-templating method to fabricate a fine-pore (50 μm) foam structure complemented by a dual-filler strategy to enhance overall performance. A robust porous conductive network was constructed by embedding zinc oxide (ZnO) and multi-walled carbon nanotubes (MWCNTs) into a polydimethylsiloxane (PDMS) matrix. The resulting sensor exhibits outstanding piezoresistive properties, featuring a wide linear detection range (0–80% strain) and a high sensitivity of 9.02 kPa−1within the 0–10 kPa pressure range. It demonstrates rapid response/recovery times of 50/70 ms and maintains stable output performance even after 5000 compression cycles at 300 kPa. The sensor also exhibits negligible environmental interference and excellent long-term stability. When attached to finger joints, feet soles, or the throat, the sensor enables functions such as finger bending recognition, race-walking violation discrimination, gait analysis, and vocal fold vibration recognition, thereby demonstrating its considerable potential for application in human–computer interaction and human motion detection.
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DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2026
·
IF 10.4
Jiachen Zhao,Huilin Hu,Chao Wang,Yingting Li,Xueyu Jiang,Ming Zhang,Fangkai Han,Ning Yang,Xiaodan Liu,Jiahua Wang,Yingli Wang,Shuo Duan,Huang Dai,Fuwei Pi
Capsaicin, the primary bioactive compound responsible for the pungency in chilli peppers, poses potential health risks at excessive levels. This study introduced a novel approach for capsaicin detection in food products using a reduced graphene oxide and multi-walled carbon nanotubes (rGO/MWCNTs)-based conductive ink integrated electrodes (IDE) produced via inkjet printing. A hybrid ink was synthesized by dispersing rGO and MWCNTs in polyethylene glycol 400, with the mass ratio of 1:2 to facilitate electron transfer. The rGO/MWCNTs-printed IDE sensor provided a dynamic range of 0.1 μM to 100 μM and a detection limit as low as 0.035 μM. The sensor exhibited good repeatability and selectivity, and maintained 97.5% of its initial response over 28 days. Practical applicability was validated in red, green, millet chilli pepper extracts and hotpot seasoning, yielding recoveries of 92.71–108.48%. The printed rGO/MWCNTs IDE platform enables sensitive capsaicin analysis and is suitable for food quality control
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2018
·Vol. 29
·期 24
·20978-20983
·
IF 2.324
Wen Zheng,Yang Jiahao,Ding Huizhen,Zhang Wule,Wu Di,Xu Junmin,Shi Zhifeng,Xu Tingting,Tian Yongtao,Li Xinjian
In this paper, a new method was proposed to improve the sensitivity of capacitive-type pressure sensors by using the high dielectric constant materials as dielectric layer of sensors. The porous multi-wall carbon nanotubes (MWCNTs)/Ecoflex elastomer composites with high dielectric constant were prepared to serve as dielectric layers of capacitive-type pressure sensors. The MWCNTs/Ecoflex elastomer composite sensors show ultra-high sensitivity of 2.306 kPa −1 , wide dynamic range and low hysteresis. The as-prepared sensors can monitor the response to pressure below 2.6 Pa. Moreover, they have exhibited excellent performances in promising practical applications as wearable devices in detecting pulses of carotid artery and heartbeats. This strategy proposed here presents a promising way to obtain high performance pressure sensors for applications in E-skin, robotics, wearable medical aids and real-time tactile sensing systems.
研究领域:
柔性电子学
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传感器与传感技术
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可穿戴设备
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电子皮肤（E-skin）
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材料科学
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高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2022
·Vol. 169
·期 12
·127515
·
IF 4.386
Wenrui Zhao,Beibei Wang,Xueping Ji,Kai Kang,Bing Wang,Lin Wang,Jujie Ren
Herein, a novel electrochemiluminescence (ECL) sensor was developed using a dual signal amplification mechanism based on a typical HKUST-1 metal-organic framework, [Cu3(BTC)2(H2O)3, BTC=1,3,5-benzene tricarboxylate], CdS quantum dots (QDs) and multi-walled carbon nanotubes (MWCNTs) for ultrasensitive determination of catechol. HKUST-1 not only has a dispersion effect to carry more CdS QDs for enhancing stability, but also acts as effective catalyzer to accelerate the transformation of persulfate ion (S2O82−) for generating more sulfate radical anions (SO4•−), therefore amplifying the signal of the ECL sensor. Meanwhile, the introduction of MWCNTs to the ECL process could promote the electron transfer rate and accelerate the kinetics of the electro-catalytic reaction attributing to its stronger conductivity, achieving dual-amplifying effect, which could obviously increase the sensitivity of the ECL sensor. The proposed sensor displayed a wide linear range of 1 × 10−7 − 1 × 10−3 M and a low detection limit of 3.8 × 10−8 M with excellent stability, high repeatability and outstanding anti-interference ability under the optimal conditions. Impressively, the sensor possessed commendable feedback when detecting catechol in real samples. Therefore, this research provided a new strategy combining the advantages of MOFs, QDs and MWCNTs materials for phenolic pollutants detection.
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高影响因子
ELECTROANALYSIS
·
2022
·Vol. 34
·期 10
·1555-1563
·
IF 3.077
Ruirui Dong,Yanhui Zhang,Jiali Huang,Marhaba Habibul,Guixin Li
A novel electrochemiluminescence biosensor was presented for the assay of hepatitis B virus (HBV) DNA. Coralloid poly(aniline-luminol)-MWCNTs was prepared on an electrode surface, which was followed by the attachment of capture DNA via amide bond formation. The HBV-DNA and ferrocene labelled DNA hybridized with capture DNA to form a sandwich structure on electrode surface. Ferrocene can effectively increase the signal output of the ECL sensor due to the catalysis of ferrocene on electrochemiluminescence of luminol. The biosensor rendered a linear dependence over the range from 1.0×10 −16 to 1.0×10 −7 M with a low detection limit of 2.4×10 −17 M.
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高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2021
·
IF 4.464
Haoye Wang,Yun Yang,Yihan Ren,Duangui Chen,Jianhong Wei,Lu Wang,Aijuan Xie,Shiping Luo
Zirconia supported on multi-walled carbon nanotubes (ZrO 2 /MWCNTs) as carriers was synthesized with hydrothermal method, and then ternary Pt-ZrO 2 /MWCNTs hybrid was prepared by electrodeposition with aims to enhance electron and proton conductivity, specific surface as well as active site, and also oxidize the adsorbed CO on Pt surface and synergistically improve electrocatalytic activity and stability for the oxidation of methanol. The synthetic conditions of Pt-ZrO 2 /MWCNTs, such as mass ratio of ZrO 2 /MWCNTs, deposition cycle of Pt, were screened, respectively. The catalytic performance of Pt-ZrO 2 /MWCNTs hybrid for methanol oxidation was investigated by cyclic voltammetry, electrochemical impedance spectroscopy, and chronoamperogram test. The results showed that Pt-ZrO 2 /MWCNTs hybrid exhibited significantly lower charge transfer resistance and better toxicity resistance compared with the commercial Pt/C(20 wt%)-SA. Meanwhile, the ECSA (42.25 m 2 /g) of Pt-ZrO 2 /MWCNTs hybrid is higher than that of other related materials. Therefore, the as-prepared Pt-ZrO 2 /MWCNTs hybrid is a promising electro-catalyst for the application of direct methanol fuel cell.
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高影响因子
MATERIALS LETTERS
·
2021
·
IF 3.423
Feifei Wang,Youhong Tan,Haiyi Peng,Fancheng Meng,Xiaogang Yao
In this paper, a flexible capacitive pressure sensor with porous barium titanate (BaTiO 3 )/multi-walled carbon nanotubes (MwCNTs)/polydimethylsiloxane (PDMS) composite layer as the dielectric layer was fabricated. The sensitivity, stability, response time and human compatibility of the sensor were fully studied. The results showed that a controllable porous microstructure dielectric layer was built successfully where hybrid BaTiO 3 and MwCNTs fillers with giant permittivity distributed homogeneously. The BaTiO 3 /MwCNTs/PDMS flexible capacitive pressure sensor possessed high sensitivity (~1.24 kPa −1 ) and good stability in the low pressure range (0 ~ 0.8 kPa). Moreover, a low detection limit (~7 Pa) and a fast response time (~200 ms) were obtained. Human compatibility test revealed that our flexible sensor could catch the response of human body swiftly so that it exhibited a bright application prospect in wearable electronics.
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高影响因子
MICROCHEMICAL JOURNAL
·
2021
·
IF 4.821
Ling Jia,Yue Mao,Siqi Zhang,Hong Li,Ming Qian,Dongbo Liu,Bin Qi
An electrochemical switch sensor toward ephedrine hydrochloride (EPh) determination was developed based on complex reactions and molecular imprinting (MIP) technique. The MIP was formed on a glassy carbon electrode (GCE) modified with Nafion-multi-walled carbon nanotube (Nafion-MWCNTs/GCE). The analytical performances of this sensor were evaluated using several electrochemical methods by measuring the response of EPh elution and re-adsorption in MIP. The working concentration range of this sensor was 1.8 × 10 −7 mol/L ~ 7.5 × 10 −5 mol/L with a detection limit of 7.2 × 10 −8 mol/L (S/N = 3). The sensor also displayed a fast response time of less than 180 s and good anti-interference ability towards several co-existing substances. The determination of EPh in spiked Saliva samples also receives satisfying results which suggest potential applications of the present sensor.
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高影响因子
危险品化学品经营许可证（带存储）