ANALYTICA CHIMICA ACTA
·
2020
·
IF 5.977
Yu Wang,Qin Lei,Wanxin Dong,Xinxin Mo,He Li
In this work, a multicolor visual immunoassay platform was developed. The photoelectric effects of Ag 2 S NPs@ZnO NTs made the color changes of PANI/PB, which enabled visual inspection of CEA. Under the visible light excitation, Ag 2 S NPs@ZnO NTs generates electron-holes. Where, photoelectrons will pass electrical circuit to PB and photoinduced holes will oxidize PANI, which making the PANI/PB composite changes from emerald green-blue-purple-black colors. When CEA was incubated, the migration rate of photogenerated carriers is slowed down owing to the steric hindrance , resulting in different color changes of PANI/PB. In addition, the average green channel of PANI/PB read by photoshop has a certain correlated linear relationship with the concentration of CEA. Meanwhile, we can observe the color transformation of PANI/PB with our own eyes. By integrating advantages of photoelectrochemistry and colorimetry , the linear range of CEA detection was 0.1–20 ng/mL, and the detection limit was 0.05 ng/mL (S/N = 3). More importantly, this multicolor sensing method is very convenient, simple and low-cost. The photocarriers-modulated colorimetric strategy also provides a novel idea for visual portable platform design in clinical diagnosis.
研究领域:
生物医学工程
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Chun-Yang Li,Tong Zhai,Wentao Gu,Huan Lv,Xue-Meng Ji,Man-Man Wang,Jing-Min Liu,Shuo Wang
Advanced glycosylation end products (AGEs) are becoming a prominent issue in the biomedical and food safety industries because of their strong relationship to human health. Here, a MIL@PANI@LDH photocatalyst was prepared by in-situ growth method, realizing thorough elimination of AGEs for the first time. The synthesized photocatalysts used MIL-101 holding remarkably specific surface area as the core and PANI with a large number of amino and imine groups as the linker to ensure excellent adsorption capacity. The lamellar LDH structure grown in the outermost layer, on the other hand, introduces a narrower band gap and stronger light absorption ability, capable of activating sodium persulfate (PS) and generating free radicals with powerfully oxidizing ability. They work in concert to achieve the effective degradation. Through the optimization of the reaction conditions, the best photochemical performance could be achieved with a Zn/Al molar ratio of 3:1, and the degradation rates of AGEs were greater than 99.8 % (within 150 min). Additionally, multiple radical synergistic and non-radical action pathways involved in the system were revealed. The precision-engineered catalysts also exhibited high stability, reusability, and desirable biosafety, offering an effective and sustainable solution to the problem of purifying hazardous substances in real application.
研究领域:
环境科学
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材料科学
·
生物医学
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2018
·
IF 5.116
Qian Wang,Liang Shao,Zhonglei Ma,Juanjuan Xu,Ying Li,Caiyun Wang
Metal-Organic Frameworks (MOFs) have attracted increasing attention in the field of energy storage owing to their high porosity, high specific surface area, high charge storage. However, the poor conductivity in most MOFs largely hinders their electrical properties. In this work, we developed an effective strategy to grow the conductive polyaniline (PANI) inside the pores of MIL-101 (labeled as PANI/MIL-101) to form a fixed interpenetrating network structure. The electron-rich imine group in PANI is chelated with the coordinatively unsaturated metal sites (CUS) in MIL-101 to form a relatively strong bonded complex and through other synergistic effects to enhance the conductivity and electrochemical properties. The resultant PANI/MIL-101 exhibited a superior high capacitance of 1197 F g −1 (i.e., 957.6C g −1 ) at 1 A g −1 in constant current charge and discharge test. The assembled flexible solid-state supercapacitor showed a favorable specific capacitance, power density and good cycling stability (a 81% capacitance retention rate over 10,000 cycles). It also demonstrates a good flexibility, as evidenced by a small capacitance loss of 10% after being subject to 1000 bending cycles at 180°. The PANI/MIL-101 nanocomposite showed great potential in energy storage device.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2019
·
IF 6.361
Xiaochao Yu,Yan Lin,Haiyang Liu,Chunping Yang,Yanrong Peng,Cheng Du,Shaohua Wu,Xiang Li,Yuanyuan Zhong
In this work, Ag 3 PO 4 /PANI/Cr:SrTiO 3 photocatalysts were designed to effectively eliminate organic pollutants including Rhodamine B and phenol from high salinity wastewater under visible light . The phase composition , optical properties , and morphology of powders were studied, and the effects of inorganic salts on removal performance of the as-prepared particles were also tested. Results showed that the photocatalytic activities of Ag 3 PO 4 /PANI/Cr:SrTiO 3 composites for Rhodamine B and phenol reached 100% within 10 min and 18 min, respectively. The reaction rate of pure Ag 3 PO 4 was 7 times less than that of the ternary composite with the adding of PANI and Cr:SrTiO 3 . The activity of Ag 3 PO 4 /PANI/Cr:SrTiO 3 remained at 92.25% after five cycles, so the photocatalytic and recyclable performance of ternary composite was greatly improved. In addition, when there was SO 4 2− with a content of ranging from 1% to 21%, the degradation activity of the ternary catalyst under visible light was not changed for Rhodamine B, which indicated that the ternary catalyst exhibited the excellent sulfate resistance ability. Results from ESR and radical trapping experiments showed that O 2 − and h + made an important contribution to visible-light photocatalytic activities .
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 Materials & Interfaces
·
2014
·
IF 5.9
Lingling Wang,Hui Huang,Songhua Xiao,Daoping Cai,Yuan Liu,Bin Liu,Dandan Wang,Chenxia Wang,Han Li,Yanrong Wang,Qiuhong Li,Taihong Wang
We report a room-temperature NH3 gas sensor with high response and great long-term stability, including CeO2 NPs conformally coated by cross-linked PANI hydrogel. Such core–shell nanocomposites were prepared by in situ polymerization with different weight ratios of CeO2 NPs and aniline. At room temperature, the nanohybrids showed enhanced response (6.5 to 50 ppm of NH3), which could be attributed to p–n junctions formed by the intimate contact between these two materials. Moreover, the stability was discussed in terms of phytic acid working as a gelator, which helped the PANI sheath accommodate itself and enhance the mechanical strength and chemical stability of the sensors by avoiding “swelling effect” in high relative humidity. The sensors maintained its sensing characteristic (response of ca. 6.5 to 50 ppm of NH3) in 15 days. Herein, the obtained results could help to accelerate the development of ammonia gas sensor.
研究领域:
材料科学
·
传感器技术
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Haoran Li,Yuekuan Sun,Ting Xian,Jinhun Bao,Wenjuan Liu,Xiaolong Lu
Three-dimensional (3D) nanostructures which have the ability to expand carrier diffusion channels and provide plenty of electrocatalytic active sites are extensively regarded as highly effective strategies for enhancing the sensing performance of electrocatalysts. Herein, a highly sensitive Cu 2 O/PANI-GO electrode was constructed simply via in-situ electrodeposition of the graphene oxide (GO) doped polyaniline PANI (PANI-GO) 3D porous network structure on a flexible stainless-steel (SS) foil substrate. Subsequently, Cu₂O nanoparticles were electrodeposited onto the unique 3D network architecture which provides abundant active sites for Cu 2 O deposition. Meanwhile, the introduction of conductive PANI and GO improves the conductivity of the sensing catalysts and enhances the electrocatalytic performance of Cu 2 O. The electrochemical behavior of glucose and ascorbic acid (AA) was investigated through cyclic voltammetry (CV). CV results have demonstrated that the formation of a 3D porous network structure provides a substantial number of electronic pathways, which facilitate direct electron transfer between biomolecules and electrocatalysts, thereby promoting the electrocatalytic oxidation of glucose and ascorbic acid (AA). According to chronoamperometry, such a 3D porous network structure electrode exhibits outstanding sensing performance for glucose and AA detection, including lower detection limit and higher sensitivity over a wide detection range compared with the reported similar Cu 2 O-based electrodes. The excellent anti-interference, stability, reproducibility, and bending stability are also obtained. Furthermore, the glucose concentration in diluted fetal bovine serum and AA concentration in diluted vitamin c beverages were quantitatively measured, and the results were satisfactory, indicating that the proposed flexible electrochemical sensing electrode provides considerable prospects for practical human health and food safety monitoring.
研究领域:
材料科学
·
生物医学工程
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
Reaction Kinetics Mechanisms and Catalysis
·
2023
·Vol. 136
·期 5
·2655-2665
·
IF 1.8
Wang Ziwei,Chen Ying,Liao Fang
In this study, MoS 2 /Cu 2 S/PANI with ‘wheat ear' structure was synthesized on nickel foam (NF) for electrocatalytic hydrogen production. The experimental results show that the catalyst exhibits excellent HER performance. At a current density of 10 mA cm −2 , it only has an overpotential of 98 mV. And it has good durability within 24 h. Compared with other materials, MoS 2 /Cu 2 S/PANI has better catalytic performance. There are three reasons for the enhancement of catalytic activity. On the one hand, polyaniline (PANI) has strong conductivity, which can improve the poor conductivity of MoS 2 . On the other hand, the nitrogen species derived from the PANI structural unit tend to bind metal ions such as Cu 2+ . Make the active material more evenly dispersed on the substrate. Cu 2+ further attracted negatively charged molybdate (MoO 4 2− ) to distribute uniformly on the surface of PANI. As a result, the synthesized molybdenum disulfide (MoS 2 ) is not stacked together, the specific surface area becomes larger, and the active sites increase. In addition, Cu 2 S, as a strong chemical bond between PANI and MoS 2 , should act as an electron transfer channel in the HER process. All of these make the composites exhibit excellent HER performance and thermal stability. Graphical abstract Synthesis mechanism of MoS 2 /Cu 2 S/PANI on nickel foam
研究领域:
材料科学
·
电化学
·
催化
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2024
·
IF 5.7
Bingwei Li,Kai Wang,Nanyin Zhao,Zhentao Fu,Mingtao Wang,Zhuoqiao Xie,Jun Li
The rapid development of the internet of things (IOT) has led to a great demand for low-cost and high-performance self-powered photodetectors with ease of preparation. However, current self-powered photodetectors remain restricted by the high preparation costs or poor performance in the broad-spectrum range. In this paper, we report an organic–inorganic heterostructure self-powered photodetector constructed by compositing polyaniline (PANI) with Bi2O2S nanosheets, which showcases great potential in the IOT system, benefiting from the synergy of low cost and high performance in the broad-spectrum range (350–760 nm). In detail, at 0 V, the photocurrent density reached the maximum of ∼2.9 μA cm−2, while the dark current density was only ∼16 nA cm−2. Thus, the developed self-powered photodetector gave the maximum responsivity of ∼29.5 mA W−1 at 350 nm under 0 V, which is comparable to that of commercial self-powered electronic products with superior performance. The prominent performance of the device is attributed to the formation of an S-type heterojunction, which could be confirmed by density functional theory (DFT) and photoluminescence (PL). In addition, the response time (0.1 s) and cycle stability (over 10 days) confirm the reliability of the equipment. Overall, the proposed device provides a promising route for developing a low-cost, high-performance, broad-spectrum self-powered photodetector.
研究领域:
材料科学
·
光电技术
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2020
·Vol. 44
·期 38
·16384-16389
·
IF 3.288
Ru-Yi Tang,Zhang Lei,Yi-Jin Weng,Xue-Min Xia,Xia Zhang
Surface Enhanced Raman Scattering (SERS), with good reproducibility and stability, is an analytical testing technique that uses metals or metal nanoparticles as detection substrates, and it can also be used to characterize the information from molecular vibration. In this paper, we first report a facile one-step approach that allows the fabrication of assembled Ag NPs induced by polyaniline (PANI). Ag@PANI nanocomposites have the dual functions of saccharide-oxidase-like and peroxidase-like activities. Therefore, they can be used as a tandem enzyme to produce hydrogen peroxide from saccharides and catalyze the oxidation of TMB. At the same time, they can be considered as a SERS substrate to obtain the characteristic peaks of TMBox. In addition, on the basis of SERS, the effects of the Ag+ concentration, temperature and pH on the activity of Ag@PANI nanocomposites as the tandem enzyme are further explored. Under the optimal conditions, the common saccharides (sucrose, fructose, glucose and lactose) were detected with linear correlation (R2) in different concentration ranges, and ultra-sensitive detection of various saccharides under label-free conditions was achieved.
研究领域:
生物化学
·
分析化学
·
纳米材料科学
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
IF 3.9
Hengxin Ren,Jinghang Li,Yanan Niu,Wu Zhang,Yuguang Lv,Ying Wang,Chaoyu Song
This study presents the synthesis and evaluation of a BiVO4/g-C3N4/PANI ternary heterojunction photocatalyst for the degradation of enrofloxacin (ENR) under visible light irradiation. The results demonstrate that the BiVO4/g-C3N4/PANI (10%) composite achieved a 91% removal efficiency of ENR within 120 min, following first-order kinetic behavior. Moreover, the photocatalyst exhibited stable degradation performance and maintained structural integrity after five consecutive cycles. The photocatalyst was characterized by XRD, SEM, TEM, FT-IR, XPS, and UV–vis DRS. The enhanced photocatalytic performance is attributed to the Z-scheme charge transfer mechanism facilitated by PANI, which enhances the separation of photogenerated carriers and reduces their recombination rate. Radical scavenging experiments and ESR spectroscopy confirmed that superoxide radicals (•O2–) and hydroxyl radicals (•OH) play dominant roles in the degradation process. Additionally, 15 degradation products of ENR were identified, and four major degradation pathways were proposed. The findings provide a theoretical basis for the application of this ternary heterojunction in environmental remediation and highlight its potential for efficient degradation of antibiotics.
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
MICROCHIMICA ACTA
·
2025
·Vol. 192
·期 9
·1-12
·
IF 5.3
Han Yiming,Hao Shuai,Liu Lihong,Li Bo,Mu Yannan,Yang Ming,Zhang Jie
The development of NH 3 sensors with efficient room temperature detection is crucial for Internet of Things-driven smart agriculture. Herein, PANI/SnO 2 hollow nanospheres composites were in situ synthesized on flexible interdigital electrodes (PET-IDE). Within the PANI/SnO 2 composites microstructure, the SnO 2 hollow spheres can provide effective support to the PANI film, minimize agglomeration, and enhance the functional performance of PANI. Furthermore, the extensive interface between the SnO 2 hollow spheres and the PANI film promotes the creation of p-n heterojunction, thereby significantly improving the NH 3 gas-sensing performance. The 4PS-based sensor (the PANI/SnO 2 composite obtained at 0.04 mol·L −1 APS/HCl solutions) exhibited a high response (9.63) toward 100 ppm NH 3 , along with excellent selectivity and stability. Correlations between microstructure and NH 3 gas-sensing behavior were systematically investigated, offering theoretical insights for sensor optimization. Graphical
研究领域:
材料科学
·
化学传感器
·
纳米技术
·
柔性电子学
·
环境监测
✓ 已验证
DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2019
·
IF 5.383
Jingwen Shen,Qiguan Wang,Kai Zhang,Sumin Wang,Lu Li,Shibo Dong,Shaoting Zhao,Jian Chen,Risheng Sun,Yan Wang,Zengyun Jian,Wenzhi Zhang
Based on carbon cloth, flexible solid-state supercapacitors from bimetal oxide arrays of NiCo 2 O 4 @NiMoO 4 deposited by conductive polymers of polyaniline (PANI) are prepared employing a two-step hydrothermal reaction , followed by high-temperature annealing and an in-situ polymerization process. The presence of NiMoO 4 nanoplates prepared on NiCo 2 O 4 nanowhires leads to the hierarchical flower-like nanostructures . In order to further enhance the conductivity and wettability, NiCo 2 O 4 @NiMoO 4 is coated by the three-dimensional networks of PANI nanorods by means of the in-situ polymerization of aniline, the obtained NiCo 2 O 4 @NiMoO 4 /PANI nanocomposites illustrate a specific hierarchical holothurian-like morphology, which facilitates the adsorption and penetration as well as the rapid transportation of electrolyte ions within the nanopores in the active electrode materials , resulting in excellent electrochemical performances. The specific areal capacitance of the flexible carbon cloth-based electrodes reaches 2.38 F cm −2 at current density 1.0 mA cm −2 , and the capacitance retention is 92.36% of the initial value after 5000 cycles, which finds applications in flexible and wearable devices.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）