JOURNAL OF HAZARDOUS MATERIALS
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2020
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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.
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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 .
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BIOSENSORS & BIOELECTRONICS
·
2016
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IF 7.476
Hanbing Rao,Min Chen,Hongwei Ge,Zhiwei Lu,Xin Liu,Ping Zou,Xianxiang Wang,Hua He,Xianyin Zeng,Yanying Wang
A novel molecularly imprinted electrochemical sensor for the rapid detection of melamine was reported in this paper. Glassy carbon electrode (GCE) was modified by Au and polyaniline composites (Au@PANI) deposited on the surface of GCE and were used to increase the electrode sensitivity and to amplify the sensor signal. Melamine template molecule was further assembled onto Au@PANI by the formation of hydrogen bonds , can implement the selective detection of melamine . This simple but efficient electrochemistry analysis platform presents a low detection limit of 1.39×10 −6 µmol L −1 for detection of melamine, which is remarkably lower than the currently used methods and the previous reports. So, this method may open a new way for the determination of melamine which enables low cost, effective and sensitive determination. This shows the sensor can be potentially utilized for the detection of melamine in food, which allows the sensitive and selective determination of melamine from milk and feed.
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JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2024
·
IF 8
Zeyi Wang,Luyao Zhang,Rong Su,Lu Yang,Feng Xiao,Lichuan Chen,Ping He,Dingming Yang,Yali Zeng,Yun Zhou,Ying Wan,Bin Tang
The abuse and uncontrolled discharge of antibiotics present a severe threat to environment and human health, necessitating the development of efficient and sustainable treatment technology. In this work, we employ a facile one-step electrodeposition method to prepare polyaniline/graphite oxide (PANI/GO) and samarium (Sm) co-modified Ti/PbO 2 (Ti/PbO 2 -PANI/GO-Sm) electrode for the degradation of amoxicillin (AMX). Compared with traditional Ti/PbO 2 electrode, Ti/PbO 2 -PANI/GO-Sm electrode exhibits more excellent oxygen evolution potential (2.63 V) and longer service life (56 h). In degradation experiment, under optimized conditions (50 mg L −1 AMX, 20 mA cm −2 , pH 3, 0.050 M Na 2 SO 4 , 25 °C), Ti/PbO 2 -PANI/GO-Sm electrode achieves remarkable removal efficiencies of 88.76% for AMX and 79.92% for chemical oxygen demand at 90 min. In addition, trapping experiment confirms that ·OH plays a major role in the degradation process. Based on theoretical calculation and liquid chromatography-mass spectrometer results, the heterocyclic portion of AMX molecule is more susceptible to ·OH attacks. Thus, this novel electrode offers a sustainable and efficient solution to address environmental challenges posed by antibiotic-contaminated wastewater.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Lulu Yuan,Ziyu Lin,Xue Li,Zhiwei Zhao,Liyuan Chen,Qiang Ren,Siwen Ding,Jinhui Pang,Zhenhua Jiang
Polymer-MOF composite membranes have attracted the attention of researchers in the field of organic solvent nanofiltration by fully utilizing the synergistic advantages of the processability of polymers and the molecular sieving properties of metal-organic frameworks (MOFs). However, the performance of such composite membranes in organic solvents is greatly reduced by insufficient interfacial interactions at the polymer-MOF interface. In this study, an in situ co -construction strategy of polyaniline (PANI) and MOF was employed to create a stabilized interface on the polymer matrix while converting the poly(ether ether ketone) precursor substrate (PEEKt) into solvent-resistant PEEK to fabricate high-performance nanofiltration membranes for organic solvents (PEEK-PANI@MIL-101). This composite membrane exhibits a rejection rate exceeding 97 % for Rose Bengal (RB) in ethanol solution, coupled with an ultrahigh ethanol permeance of 266 L m −2 h −1 bar −1 . The integrated dual in situ growth strategy significantly enhances the interfacial adhesion of the composite membrane. Furthermore, the membrane demonstrates outstanding thermal resistance and acid stability, ensuring robust performance under harsh operating conditions.
研究领域:
材料科学
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膜分离技术
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高分子化学
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纳米材料
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环境工程
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化学工程
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JOURNAL OF ALLOYS AND COMPOUNDS
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2023
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IF 6.2
Yanzhi Cai,Tingting Liu,Laifei Cheng,Siyu Guo,Haiming Yu,Yuhan Wang,Dengpeng Chen,Zhongyi Hu,Jianing Liu,Wenxu Wei,Junqiang Ma
Polycarbosilane nanofiber-ferroferric oxide (PCS nf -Fe 3 O 4 ) films were assembled on both sides of carbon nanotube-polyaniline buckypaper (CNT-PANI BP) by electrospinning to obtain PCS nf -Fe 3 O 4 /CNT-PANI BP/PCS nf -Fe 3 O 4 sandwich porous composites, with a diameter of 110–120 mm and a thickness of 150–200 µm. The Fe 3 O 4 nanoparticles adhered on the PCS nanofibers formed a bamboo-like or plum-like structure. The PANI nanoparticles were uniformly embedded in the CNT network. Both PCS nf -Fe 3 O 4 film skin layers were well bonded to the CNT-PANI BP core layer, with two main forms of the interlayer interface of rattan-like and root-like entanglement. The sandwich composite film (SCF) with 15.1 wt% Fe 3 O 4 in the skin layers had a density of 0.97 g/cm 3 , a porosity of 61% and a total pore area of 30.1 m 2 /g, with a multimodal pore size distribution. The SCFs were superflexible, being tightly wound around a 4 mm diameter glass rod and repeated 100 times without damage. The absorption performance of the SCF was significantly improved by introducing Fe 3 O 4 nanoparticles into its skin layers. The SCF with 11.8 wt% Fe 3 O 4 in its skin layers achieved optimal dielectric and magnetic loss matching, with minimum reflection loss of − 43.54 dB and maximum effective absorption bandwidth of 6.97 GHz.
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NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 47
·期 9
·4277-4287
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IF 3.3
Jiaxin Mou,Yunlan Xu,Dengjie Zhong,Haixing Chang,Jun Li,Chunzi Xu,Hui Wang,Hongyu Shen
To expand the optical absorption range and charge transfer efficiency of photoanode, the ZnIn2S4/PANI/TiO2/Ti photoanode was developed using a coating method and applied in a photocatalytic fuel cell (PFC) system for the removal of organic pollutants and chemical energy recovery. The prepared photoanode obtained a maximum photocurrent density of 4.19 mA cm−2 (1.2 V vs. SCE). The rhodamine B (RhB) removal efficiency, maximum power density (Pmax) and short-circuit current density (Jsc) of PFC constructed with the ZnIn2S4/PANI/TiO2/Ti composite photoanode and Cu cathode were 93.80% (1 h), 18.83 μW cm−2 and 0.26 mA cm−2, respectively. The improved photocatalytic activity of PFC was due to the outstanding photoelectric properties of the ZnIn2S4/PANI hybrid material, in which PANI, as a photosensitizer, promoted the absorption of visible light by the photoanode. The photoexcited electrons of ZnIn2S4 and PANI tend to be directly transferred to the CB of TiO2, while holes accumulate in the VB of PANI to participate in the oxidation reaction. The synergistic effect accelerates the separation of photogenerated electron–hole pairs and improves the photoelectric conversion efficiency of PFC.
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JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2020
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IF 6.155
Xin Wang,Jiaqian Zhu,Xiang Yu,Xionghui Fu,Yi Zhu,Yuanming Zhang
A novel three-dimension separable and recyclable rGH-PANI/BiOI photocatalyst with the synergism of adsorption-enrichment and photocatalytic-degradation was successfully prepared via a facile three-step hydrothermal method . The three-dimension reduced graphene oxide hydrogel (rGH) in with flower-like BiOI photocatalyst uniformly distributed not only possesses excellent adsorption and electron transport properties, but also is easy to be separated from water for recycling. In addition, polyphenylamine (PANI) provides superior hole transport ability due to its delocalized π-π conjugate structure. The cooperation of rGH and PANI greatly enhances the separation efficiency of photogenerated carriers, and finally improves the photocatalytic degradation behaviors. The removal rates of Rhodamine B (RhB) by rGH-PANI/BiOI-70 % composite under visible light respectively reach 100 % and 50.13 % in static and dynamic systems, which are 12.85 and 3.58 times of BiOI, respectively. The removal rate does not show decrease after 5 recycles indicating the excellent separable and recyclable property of rGH-PANI/BiOI photocatalyst. The work provides an essential reference for designing and constructing hydrogel-based ternary composite photocatalysts with excellent synergism of adsorption and photocatalysis , which shows great potential in the treatment of water pollution.
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JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Yongning Ma,Panpan Li,Peihan Wu,Mingyuan Guo,Yuhao Yang,Xiaolong Li
In photocatalytic anticorrosion perspective, the migration rate of excited electrons from surface layers to substrate steels restricted the performance of g-C 3 N 4 due to the high resistance between interface of g-C 3 N 4 layers and adhesive layers. Herein, an S-scheme g-C 3 N 4 /polyaniline (PANI) heterojunction with face-to-face structure was established by a secondary calcining method. The as-prepared heterojunctions were applied to protect Q235 carbon steel, and the results showed that the anticorrosion performance of S-scheme g-C 3 N 4 /PANI heterojunction is much higher than that of g-C 3 N 4 and PANI coating layers according to salt spray test. Photocurrent intensity indicated that the optimum amounts of g-C 3 N 4 and PANI were 0.06 and 0.09 mL/cm 2 , which are benefit for the transport of excited electrons due to the optimum thickness of coating layers. Furthermore, the S-scheme g-C 3 N 4 /PANI heterojunction can promote the separation rate of charge carriers and suppress the recombination rate at the same time, which are inferred from photocurrent intensity, electrochemical impedance spectra, super-depth-of-field microscope, and photoluminescence investigation. In the last, the enhanced anticorrosion performance of S-scheme g-C 3 N 4 /PANI heterojunction with face-to-face structure was deduced according to mentioned characterization.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Kongsen Hu,Jiyuan Feng,Qing Hai,Wenbo Jiang,Zhiwei Lyu,Nan Lv
Traditional pressure sensors with localization functions are often performed through arrays of numerous sensors and dot-matrix electrodes. However, their application is limited because of the restrictions of miniaturization and flexibility as well as expensive multi-step preparations. Here we present a simple one-step method to establish the conductive-piezoelectric nanoresistance networks by preparing electrospun polyaniline/polyacrylonitrile (PANI/PAN) nanofibers (NFs). The nanoresistance networks constituted of PANI nanoscale conductive paths and PAN piezoelectric elements can be used as a new substitute material for sensors arrays and dot-matrix electrodes of traditional sensors for pressure sensing and localization based on the Wheatstone bridge principle. The performance of conductive-piezoelectric PANI/PAN integrated electrospun nanofibrous membrane (IENFM) for force sensing and positioning is appropriately explored and assessed. The IENFM shows high linear sensitivity of 1.71 V N −1 and low detectable pressure limit (0.1 N). Moreover, the maximum output voltage can be traced back to the position where pressure is exerted on the PANI/PAN IENFM by detecting output voltages distribution. Thus, our work opens a new sight for the application of the integrated sensing material for pressure localization.
研究领域:
材料科学
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电子工程
·
传感器技术
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Materials Today Chemistry
·
2024
·
IF 6.7
Yuanjun Liu,Xinyu Jiao
With the advancement of technology and the improvement of living standards, multifunctional composite materials are increasingly attracting attention. Conductive polymer polyaniline (PANI), a key component in the fabrication of intelligent composite materials, is widely used in various fields because of its unique properties. When FeCl 3 was used as the oxidant, the PANI-based composite material demonstrated a significant increase in maximum saturation temperature from 34.10 °C to 47.43 °C, under a voltage range of 6–12 V. It also exhibited a sensitivity of 1.0960 kPa −1 (greater than 1 kPa −1 ) at a low pressure of 0.5 kPa, and its response/recovery time is 200 ms for both. Its maximum capillary rise height reached 7.7 cm. Additionally, the PANI-based composite material achieved a UPF value 40+, effectively blocking over 97.5 % of ultraviolet rays. It also absorbed over 90 % of electromagnetic waves within the 0–18 GHz frequency range. The wear resistance has also been significantly improved compared to pure cotton fabrics, with the friction times reaching 1370 before damage when FeCl 3 is used as the oxidant for this composite material. The PANI-based composite material developed in this study functions of intelligent heating, motion detection, moisture absorption, and UV protection functions. It holds the potential to develop efficient heating and sensing devices, offering a solution for the design of the next generation of multifunctional flexible composite materials.
研究领域:
材料科学
·
复合材料工程
·
智能设备开发
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RSC Advances
·
2019
·Vol. 9
·期 6
·2997-3003
·
IF 3.049
Shuaihui Li,Yashen Ma,Yongkang Liu,Gu Xin,Minghua Wang,Zhihong Zhang,Zhongyi Liu
A three dimensional (3D) nanostructured composite based on the self-assembly of MoS2 nanospheres and polyaniline (PANI) loaded on reduced graphene oxide (denoted by 3D MoS2-PANI/rGO) was prepared via a feasible one-pot hydrothermal process. The 3D MoS2-PANI/rGO nanocomposite not only exhibits good functionality and bioaffinity but also displays high electrochemical catalytic activity. As such, the developed 3D MoS2-PANI/rGO nanocomposite can be employed as the sensing platform for simultaneously detecting small biomolecules, i.e., ascorbic acid (AA), dopamine (DA), and uric acid (UA). The peak currents obtained from the differential pulse voltammetry (DPV) measurements depended linearly on the concentrations in the wide range from 50 μM to 8.0 mM, 5.0 to 500 μM, and 1.0 to 500 μM, giving low detection limits of 22.20, 0.70, and 0.36 μM for AA, DA, and UA, respectively. Furthermore, the 3D MoS2-PANI/rGO-based electrochemical sensor also exhibited high selectivity, good reproducibility and stability toward small molecule detection. The present sensing strategy based on 3D MoS2-PANI/rGO suggests a good reliability in the trace determination of electroactive biomolecules.
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