Chemosensors
·
2024
·Vol. 12
·期 11
·222
·
IF 3.7
Jinhao Wang,Lijuan Chen,Fan Chen,Xinyang Lu,Xuanye Li,Yu Bao,Wei Wang,Dongxue Han,Li Niu
With the continuous advancement of contemporary medical technology, an increasing number of individuals are inclined towards self-monitoring their physiological health information, specifically focusing on monitoring blood glucose levels. However, as an emerging flexible sensing technique, continuous and non-invasive monitoring of glucose in sweat offers a promising alternative to conventional invasive blood tests for measuring blood glucose levels, reducing the risk of infection associated with blood testing. In this study, we fabricated a flexible and wearable electrochemical enzyme sensor based on a two-dimensional Ti3C2TxMXene nanosheets and coral-like polyaniline (PANI) binary nanocomposite (denoted as Ti3C2Tx/PANI) for continuous, non-invasive, real-time monitoring of sweat glucose. The exceptional conductivity of Ti3C2TxMXene nanosheets, in conjunction with the mutual doping effect facilitated by coral-like PANI, significantly enhances electrical conductivity and specific surface areas of Ti3C2Tx/PANI. Consequently, the fabricated sensor exhibits remarkable sensitivity (25.16 μA·mM−1·cm−2), a low detection limit of glucose (26 μM), and an extensive detection range (0.05 mM ~ 1.0 mM) in sweat. Due to the dense coral-like structure of Ti3C2Tx/PANI binary nanocomposite, a larger effective area is obtained to offer more active sites for enzyme immobilization and enhancing enzymatic catalytic activity. Moreover, the sensor demonstrates exceptional mechanical performance, enabling a 60° bend in practical applications, thus satisfying the rigorous demands of human sweat detection applications. The results obtained from continuous 60 min in vitro monitoring of sweat glucose levels demonstrate a robust correlation with the data of blood glucose levels collected by a commercial glucose meter. Furthermore, the fabricated Ti3C2Tx/PANI/GOx sensor demonstrated agreement with HPLC findings regarding the actual concentration of added glucose. This study presents an efficient and practical approach for the development of a highly reliable MXene glucose biosensor, enabling stable and long-term monitoring of glucose levels in human sweat.
研究领域:
生物医学工程
·
材料科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2020
·
IF 3.573
Like Ouyang,Yuan Wang,Ping Zhang,Xinlong Wang,Shaojun Yuan
Arsenite contamination in groundwater seriously impairs human health due to its high mobility and toxicity. Herein, a novel heterostructured MWCNTs@PANI@TiO2 nanocomposite was synthesized via a one-pot polymerization process for the adsorption and photocatalytic oxidation of As(III) from aqueous solution. In the dark, the as-synthesized nanocomposite had a high adsorption capacity of As(III) at about 0.29 mmol·g–1 with an initial As(III) concentration of 0.067–0.801 mmol·L–1 at 298.15 K and exhibited a stable adsorption capacity in a wide pH range of 2–9. The adsorption kinetics of As(III) on MWCNTs@PANI@TiO2 was in accordance with the PSO model and was mainly controlled by chemical adsorption. Under visible light irradiation, the adsorption amount of As(III) on MWCNTs@PANI@TiO2 was substantially enhanced by about 57%, and the photocatalytic conversion of As(III) to As(V) was found to be caused by the photogenerated holes and superoxide free radical (•O2–). The hypothesized adsorption mechanisms of As(III) and As(V) ions on the nanocomposite were possibly ascribed to surface complexation and hydrogen-bonded interactions. The heterostructured MWCNTs@PANI@TiO2 nanocomposite offers a promising candidate for highly efficient removal of As(III) ions from arsenite-polluted groundwater.
研究领域:
环境科学
·
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Hanlu Zeng,Yunlan Xu,Dengjie Zhong,Yuqin Yang,Qingmei Qiao
Photocatalytic fuel cell (PFC) provides a new method to degrade organic pollutants and recover their energy simultaneously. In this work, a novel flower-like hierarchical photoanode (PANI/Bi 2 Sn 2 O 7 /BiOBr/Ti) was synthesized by solvothermal method and assembled with Cu cathode to form a PFC for rhodamine B (RhB) degradation and simultaneous power generation. The crystal structure, chemical composition, and morphology of the photoanode was characterized by a variety of analysis techniques. The photocatalytic activity of the ternary hierarchical composite photoanode was superior to that of single and binary composite photoanodes. Its maximum photocurrent density, maximum power density, degradation rate and FF were 0.241 mA·cm −2 , 21.52μW·cm −2 , 92.97 % (90 min) and 0.18, respectively. In addition, it still maintains high photocatalytic activity after five consecutive uses. Based on the analysis results of transient photocurrent (i-t), EIS, DRS spectrum, M-S curve and free radical capture experiments, the improvement of photocatalytic performance of PANI/Bi 2 Sn 2 O 7 /BiOBr/Ti photoanode is attributed to the formation of dual Z-scheme heterojunction between PANI and BiOBr and between Bi 2 Sn 2 O 7 and BiOBr, which realizes the rapid separation and transfer of electron-hole pairs, and retains the strong oxidation of holes in VB of BiOBr and the strong reduction of electrons in LUMO of PANI and CB of Bi 2 Sn 2 O 7 . This study provides a new research idea for the design and construction of high efficiency photoanode in PFC system.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2021
·Vol. 9
·期 36
·20635-20644
·
IF 12.732
Jinyong Tian,Nanjian Cui,Peining Chen,Kunkun Guo,Xuli Chen
At present, the energy storage performances of fiber supercapacitors are significantly limited by the insufficient charge transfer and defective loading of active materials. Here, to modify the rate capability and cycling stability of flexible fiber supercapacitors, a composite fiber with a hierarchical core-sheath structure is designed by first growing N-CNTs on a highly aligned CNT fiber and then depositing PANI on the N-CNTs. The primary core, highly aligned CNT fiber, ensures free-standing flexibility and the rapid transfer of electrons. The porous primary sheath and secondary core, N-CNTs, can form a framework so as to improve the loading mass and uniformity of the secondary sheath, PANI with high specific capacitance, and enhance the interaction between PANI and the N-CNTs. Moreover, the porous N-CNT structure can simultaneously greatly facilitate the transfer of electrons and ions. The synergistic effects of the CNT fiber, N-CNTs and PANI endow this hierarchical core-sheath structured PANI/N-CNT@CNT fiber with high specific capacitance, excellent rate capability and cycling stability. The specific capacitance reaches 323.8 F g−1 at a current density of 1 A g−1 and 221.3 F g−1 can be retained at a high current density of 50 A g−1. The assembled supercapacitor can maintain 92.1% of the original capacitance after 10 000 charge–discharge cycles at 20 A g−1. Beyond excellent energy storage properties, it also exhibits excellent wearability and flexibility. The capacitance can be maintained at 95.5% after repeated bending processes for up to 10 000 cycles. This work provides a new strategy to develop fiber electrodes for high-performance wearable devices.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 34
·期 17
·1-20
·
IF 2.8
Qi Zhijia,Zhang Shengsheng,Huang Jiaju,Li Juan,Jiang Junjiong,Fan Ping,Yang Jintao
Flexible PVDF-based piezoelectric nanogenerators (PENGs) are promising mechanical energy harvesters for powering wearable devices and portable electronics. In this work, a new hybrid nanocomposite was prepared by coating polyaniline on the surface of halloysite nanotube (HNT@PANI) and PENGs were fabricated by using electrospun nanocomposite fiber mats comprising HNT@PANI and poly(vinylidene fluoride) (PVDF). The rough surface of PANI outer layer and its electronegative properties favors a large interface and a strong interfacial interaction with PVDF matrix, which efficiently improves the β-phase crystal content and the crystallinity of PVDF simultaneously, resulting in an enhanced output performance in the fibrous nanocomposite PENGs. When the nanocomposite fiber mats are composed of 1 wt% HNT@PANI nanoparticles, the open-circuit voltage of the PENG is up to 30 V, which is six times higher than that of pure PVDF, and it can also light up 17 red LEDs. Furthermore, the open-circuit voltage was found unchanged after being subjected to continuous tapping for 5 weeks in the durability test. In addition, the PENG can charge a capacitor to 4.4 V within 60 s. This flexible self-powered PENG with good durability and high outputs has the potential to be used as a self-charging power source and applied in the field of wearable flexible electronic devices.
研究领域:
材料科学
·
能源技术
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Yashi Qing,Yanxiang Li,Lixia Cao,Yujie Yang,Li Han,Panchan Dansawad,Haigang Gao,Wangliang Li
17β-estradiol (E2) in natural water has caused serious environmental problems because of its extremely high estrogenic activity. Herein, a novel β-CD@PANI/BiOBr (C-PANI/BiOBr) step scheme (S-scheme) heterojunction photocatalyst was successfully prepared via facile chemical precipitation method. The encapsulation of β-cyclodextrin (β-CD) around polyaniline (PANI) contributed to better transfer of photogenerated carries by the stabilization of radical cation and excellent adsorption capability driven by hydrophobic interaction, hydrogen bonding and π-π stacking. The C-PANI/BiOBr heterojunction photocatalysts realized excellent light absorption in full spectrum. The N derived from C-PANI could coordinate with Bi metal ions, which favored forming BiOBr with (1 1 0) facet exposure, thus promoting the photogenerated electron-hole separation. The optimal 20% C-PANI/BiOBr achieved rapid degradation of contaminants (100% removal of E2 in 40 min and RhB in 9 min) under visible light irradiation. Furthermore, three main degradation pathways of E2 photodegradation were proposed by high performance liquid chromatography-mass spectrometer (HPLC-MS) results, and the toxicity of E2 and intermediates were evaluated by ECOSAR program. The active species capture experiment indicated that h + and •O 2 – played the dominated roles in the photodegradation process and S-scheme mechanism of C-PANI/BiOBr with enhanced photocatalytic performance was also revealed. This study provided an insight in fabricating efficient photocatalysts for environmental remediation.
研究领域:
环境科学
·
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
Surfaces and Interfaces
·
2025
·
IF 6.3
Dawei Shi,Xin Zhang,Chunhui Chen,Huifang Peng,Zhi Liu
Solar interfacial evaporation has emerged as a promising technology for addressing the global water crisis challenge. Within this field, fabric-based evaporators have garnered considerable research attention due to their scalability and cost-effective manufacturability. Strikingly, cellulose-based materials have become particularly attractive for evaporator design owing to their hydrophilicity and biodegradability, making them ideal candidates. In this study, we developed a high performance solar evaporator through a facile fabrication process by integrating polydopamine (PDA) and polyaniline (PANI) with a cellulose nonwoven fabric substrate. The synergistic interaction between these components endows the evaporator with exceptional photothermal conversion capabilities, demonstrating a remarkable average optical absorption efficiency of 92.44 %. The device achieves surface temperatures of 105.1°C at dry state and 65.9°C at wet state under 3 kW m⁻². It achieves a high evaporation rate of 1.488 kg m⁻² h⁻¹ and an energy conversion efficiency of 94.09 % under 1 kW m⁻². Field testing demonstrated practical freshwater production of 6.28 kg m⁻² over an 8-hour operational period. Furthermore, the material's inherent superior hydrophilicity effectively inhibits salt accumulation, ensuring stable long-term performance. This cellulose-based photothermal evaporation system represents a significant advancement in sustainable desalination technology for large-scale seawater desalination and wastewater reclamation.
研究领域:
可再生能源
·
材料科学
·
环境工程
·
纳米技术
·
化学工程
·
可持续技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2020
·
IF 9.038
Haihua Xu,Sidi Zhu,Mingzhu Xia,Fengyun Wang
The efficient removal of Diclofenac sodium (DCF), a nonsteroidal anti-inflammatory drug, has attracted more and more attention. In this work, ternary core-shell CS@PANI@LDH composite was synthesized via the in-situ growth of Mg/Al layered double hydroxide plates onto polyaniline-wrapped carbon sphere and applied for DCF removal. Various influence factors like concentration, pH, time, temperature, and background electrolytes were systematically investigated. The maximum adsorption capacity was 618.16 mg/g. Besides, after 5 regeneration cycles, CS@PANI@LDH still retained high adsorption capacity. The adsorption mechanism was investigated by Fourier transformed infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS) characterization analyses. Simultaneously, the Multiwfn program combined the Chimera program was applied to calculate and visualize the localized orbit locator (LOL) of π electrons in DCF − molecule, which explored the π electronic structure and conjugation characteristics of DCF − molecule. Moreover, the Independent Gradient Model (IGM) analysis based on pro-molecular density revealed the interaction sites and interaction strength between DCF and LDH. The adsorption mechanism could be explained through electrostatic interaction and hydrogen bonding between LDH and DCF, π-π interaction between DCF and PANI. It was the synergistic effects of different interactions that improved the adsorption of DCF by CS@PANI@LDH composite.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Energy Materials
·
2021
·
IF 6.024
Fangyou Meng,Yuan Yu,Dongfeng Sun,Songmin Lin,Xudong Zhang,Ting Xi,Chaoming Xu,Huican OuYang,Wenhui Chu,Lin Shang,Qingmei Su,Bingshe Xu
In this work, a kind of three-dimensional (3D) needle branch-like array nanostructured PANI/CoNiP hybrid electrode self-supported on nickle foam (NF) is explored. This 3D needle branch-like array nanostructured PANI/CoNiP–NF electrode can not only expose more activity sites but also effectively capture protons from hydrated ions to form protonated amino groups due to abundant lone pair electrons in the nitrogen of PANI. The as-synthesized nanostructured PANI/CoNiP–NF electrocatalyst exhibits outstanding catalytic activity, achieving 10 mA cm–2 current density at a lower overpotential of 61 mV. Density functional theory calculation shows that the Gibbs free energy of hydrogen adsorption (ΔGH*) of PANI/CoNiP is lower than that of CoNiP, further proving theoretically that polyaniline (PANI) can accelerate the hydrogen evolution reaction kinetic process and improve the catalytic activity, which is consistent with the experimental results. Especially, the Ni site of PANI/CoNiP has the lowest Gibbs free energy of hydrogen adsorption (ΔGH*) of −0.059 eV, close to 0, providing a basis for designing and preparing materials, that is, to expose the crystal planes with more Ni active sites as much as possible, thus improving the catalytic performance of the PANI/CoNiP materials.
研究领域:
电化学
·
材料科学
·
催化
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2021
·
IF 4.539
Can Cui,Xiaohuan Sun,Chuanqiang Zhou,Yingwei Liu,Huixin Xiong,Yanan Li,Jie Han
Pomegranate-like MnO 2 @polyaniline (PANI) sub-microspheres have been designed and successfully synthesized as a novel and highly effective sorbent material to remove heavy metal ions from water. Herein, pomegranate-like SiO 2 @PANI spheres were firstly fabricated by performing the oxidation polymerization of aniline in silica colloidal solution, followed by the removal of SiO 2 and in situ redox reaction between KMnO 4 and PANI . Compared with the mono-component PANI and MnO 2 materials, the obtained pomegranate-like MnO 2 @PANI sub-microspheres exhibited superior adsorption ability towards Pb(II) ions due to the synergistic effect. Influencing factors, including pH, Pb(II) ions concentration, adsorbents content and other ions on the Pb(II) ion sorption onto the MnO 2 @PANI hybrid were systematically studied. The sorption isotherm, kinetics and thermodynamic properties of the hybrids for Pb(II) ions adsorption were reflected by different models. Moreover, the adsorption ability of pomegranate-like MnO 2 @PANI sub-microspheres towards other heavy metal ions was also explored. This work would provide new insight on the design of hierarchical inorganic/organic nanosorbent.
研究领域:
环境科学
·
材料科学
·
化学
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Yueyue Ma,Yadong He,Chenlong Hao,Xiang Li,Ling Li,Youwei Zhao,Yucang Zhang,Wenming Zhang
With the continuous development of self-powered sensing systems, achieving efficient energy self-supply and high-performance signal acquisition simultaneously has emerged as a main trend for next-generation sensors. However, developing functional materials for such sensing systems is still facing crucial challenges. Herein, a multifunctional MnO 2 @PANI (MP) composite material was designed to realize a synchronized “integration” strategy. Specifically, the MP serves as a cathode in photo-assisted zinc-ion batteries (PA-ZIBs), enabling solar energy conversion and storage. The p-n heterojunction formed between MnO 2 and PANI promotes effective separation of photogenerated electron-hole pairs and enhances Zn 2+ kinetics. Therefore, the PA-ZIBs deliver a high self-charging voltage of 1.08 V and 33 % enhancement in specific capacity (reaching 249.5 mAh g −1 at 0.1 A g −1 ) under illumination. Meanwhile, it also functions as the active layer of a flexible strain sensor, achieving efficient mechanical signal detection. The core–shell structure and composite component improve both structural stability and conductivity. As a result, the sensor exhibits high sensitivity, a fast response time of 0.4 s, and excellent durability over 2000 cycles. Furthermore, proof-of-concept demonstrations validate the device’s capability to simultaneously harvest solar energy and detect physiological signals. This work offers a new solution for designing self-powered sensing systems and intelligent healthcare applications by merging energy-autonomous operation with multifunctional sensing capabilities.
研究领域:
材料科学
·
能源技术
·
传感器技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
TALANTA
·
2020
·
IF 5.339
Dandan Song,Jing Zheng,Nosang V. Myung,Jingli Xu,Min Zhang
A sandwich-type electrochemical immunosensor was developed for the detection of CEA where hollow magnetic silica coated nickel/carbon (Ni/ [email protected] 2 ) nanocomposites was used as an immobilized carrier and gold nanoparticle-coated PANI microsphere ( [email protected] @Au) as electrochemical transducer. Magnetic assembly of Ni/ [email protected] 2 nanocomposites allow easy separation and assembly which eliminates the further modification process. In addition, the prepared [email protected] @Au possess good biocompatibility, and electrical conductivity. The fabricated immunosensor show excellent sensing performance including a wide dynamic range from 0.006 to 12.00 ng mL −1 and low detection limit at 1.56 pg mL −1 . Moreover, this sensor shows superior selectivity with excellent reliability and reproducibility which might lead into easier implementation in clinical setting.
研究领域:
生物化学
·
分析化学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）