DESALINATION
·
2022
·
IF 11.211
Hao Yu,Yi He,Hongjie Li,Zhong Li,Baiyu Ren,Guanyu Chen,Xinyi Hu,Tao Tang,Yinfen Cheng,Jian Zhen Ou
Graphene oxide membranes (GOMs) have great potentials in the high-performance desalination of salty wastewater. However, the low-selectivity and fouling issues are the main obstacles to practical implementation. Although compositing with TiO 2 nanoparticles alleviates such problems by regulating membrane structures and photodegrading surface organic filter cakes, the performance is still limited by the intrinsic aggregation feature and narrow UV response range. Here, we functionalize TiO 2 nanoparticles with polypyrrole (PPy) to improve their dispersibility and visible-light-driven photodegradation properties. The as-formed core-shell heterostructures (PPy@TiO 2 ) with a large dose are intercalated into GOM, resulting in a large water flux (436.93 Lm −2 h −1 bar −1 ) and selective positive dye/negative dye separation with a maximum salt permeation of 97%. Upon the reduction of the dosage, more than 99% of dyes are separated regardless of molecule weights and surface charge polarity although the average water flux is reduced to 5.83 Lm −2 h −1 bar −1 and the salt rejection rate is increased up to 24%. In addition, the composite membrane with low-dosed PPy@TiO 2 photodegrades MB completely within 2 h, while its water permeability and dye rejection performance are maintained after a 5 h filtration process . Our work provides a facile method to develop multi-functional 2D composite membranes with controllable and stable dye desalination performances.
✓ 已验证
产品关联
DOI
高影响因子
Advanced Materials Technologies
·
2021
·Vol. 7
·期 3
·2100675
·
IF 7.848
Kun Yang,Haonan Cheng,Bo Wang,Yongsong Tan,Ting Ye,Yongqiang Yang,Chaoxia Wang
Flexible, stretchable, and wearable fabric strain sensors can easily detect human motions and monitor human health, but their utility is limited by poor stability and sensing performance. The stability and sensing performances of the fabric strain sensors are invariably determined by the fabric and conductive materials. Here, a Ti 3 C 2 T x /polypyrrole (PPy) nylon strain sensor is fabricated using a facile one-step polymerization of pyrrole (Py) monomers in the presence of Ti 3 C 2 T x suspension at 0 ° C. The Ti 3 C 2 T x nanosheets/PPy nanospheres heterostructure adhered to the nylon substrate inhibits mutual agglomeration and stacking, which provides more electron transfer pathways. The nylon substrate and two conductive materials endow the sensor with excellent stretchability (50%), low resistance (80 Ω cm −1 ), fast response (40 ms), and recovery (70 ms), a wide sensing range (0–50%), and long-term sensing function (2000 cycles). With these virtues, the prepared Ti 3 C 2 T x /PPy nylon sensor can monitor human activities effectively, including joint bending (finger, elbow, and knee) and subtle motions (carotid pulse, slight pressing, and speaking vibrations). The flexible and highly conductive Ti 3 C 2 T x /PPy strain sensor exhibits a promising sensing performance against the external strain, allowing it to be used in health-care monitoring.
✓ 已验证
产品关联
DOI
高影响因子
SENSORS
·
2019
·Vol. 19
·期 3
·640
·
IF 3.031
Meng Li,Jing Wu,Haiping Su,Yan Tu,Yazhuo Shang,Yifan He,Honglai Liu
In this work, three different aqueous solutions containing imidazole-based ILs with different alkyl chain lengths ([Cnmim]Br,n= 2, 6, 12) were adopted as the medium for the synthesis of ionic liquid-polypyrrole (IL-PPy) composites. Herein, the ILs undertook the roles of the pyrrole solvent, the media for emulsion polymerization of PPy and PPy dopants, respectively. The electrochemical performances of the three IL-PPy composites on a glassy carbon electrode (GCE) were investigated by electrochemical experiments, which indicated that [C12mim]Br-PPy (C12-PPy) composites displayed better electrochemical performance due to their larger surface area and firmer immobilization on the GCE. Further, C12-PPy/GCE were decorated with Au microparticles by electrodeposition that can not only increase the conductivity, but also immobilize sufficient biomolecules on the electrode. Then, the obtained C12-PPy-Au/GCE with outstanding electrochemical performance was employed as a horseradish peroxidase (HRP) immobilization platform to fabricate a novel C12-PPy-Au-HRP/GCE biosensor for H2O2detection. The results showed that the prepared C12-PPy-Au-HRP/GCE biosensor exhibited high sensitivity, fast response, and a wide detection range as well as low detection limit towards H2O2. This work not only provides an outstanding biomolecule immobilization matrix for the fabrication of highly sensitive biosensors, but also advances the understanding of the roles of ILs in improving the electrochemical performance of biosensors.Keywords:ionic liquids (ILs);polypyrrole (PPy);gold particles;horseradish peroxidase (HRP);enzyme immobilization;hydrogen peroxide sensor
研究领域:
材料科学
·
电化学
·
生物传感器
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Today Nano
·
2025
·
IF 8.2
Yinchun Fang,Xianglu Zhao,Xuchen Tao
Photonic crystals (PCs) structural color coatings have been widely studied due to their advantages of environmental friendliness, resistance to fading and high color saturation. However, they still have problems such as single function and being easily affected by the external environment. In this research, fluorescent SiO 2 @polypyrrole@carbon quantum dots (SiO 2 @PPy@CQDs) microspheres were synthesized by incorporating CQDs into SiO 2 @PPy microspheres, which were self-assembled on the white cotton fabrics to form an amorphous photonic structure (APS). These APS exhibited angle-independent structural colors under natural light and blue fluorescence under UV light. The structural colored cotton fabrics obtained superhydrophobicity with a water contact angle (WCA) greater than 150° and self-cleaning function after treatment with polydimethylsiloxane (PDMS). The anti-counterfeiting structural colored fabrics with single response to UV light and dual responses to water/UV light based on SiO 2 @PPy@CQDs, SiO 2 @PPy and SiO 2 microspheres were prepared by using multi-layer alternating atomization deposition and PDMS hydrophobic treatment processes. This study provides a novel approach for developing multifunctional structural color coatings with self-cleaning and anti-counterfeiting based on fluorescent organic/inorganic hybrid microspheres.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Mingyin Qiu,Ying Men,Zhe Lin,Lipiao Bao,Ziyu Qin,Xing Lu
The growing demand for multifunctional sensors in wearable systems has prompted the need for materials that simultaneously support gas sensing and mechanical strain detection. However, current flexible sensing materials still suffer from issues such as response hysteresis, poor humidity resistance, and lack of antibacterial properties. Herein, we developed a ternary flexible composite by integrating defect-engineered ZIF-8, conductive polypyrrole (PPY), and bacterial cellulose (BC), which was further encapsulated with polydimethylsiloxane (PDMS) to form the Def-ZIF-8/PPY/BC@PDMS composite. The results demonstrated that with 2–3 layers of PDMS, the sensor achieved a fast and stable NO 2 response (9.3% at 10 ppm), with reliable recovery. Under 80% relative humidity, PDMS reduced humidity-induced signals from 34% to 10.3%, confirming markedly improved moisture resistance. The incorporation of a PDMS layer enabled enhanced stress sensing, reducing the response/recovery times to 0.4/0.3 s from 0.9/0.8 s in the uncoated structure. The sensor demonstrated high fidelity in recognizing complex biomechanical signals such as swallowing, walking, and finger articulation. Furthermore, antibacterial testing confirmed 42.18% and 64.69% inhibition against Escherichia coli and Staphylococcus aureus , respectively. This multifunctional composite simultaneously optimizes gas sensing, mechanical flexibility, humidity resistance, and antibacterial efficacy, paving the way for advanced materials in fully integrated wearable sensing technologies.
研究领域:
材料科学
·
传感器与传感技术
·
可穿戴电子
·
气体传感
·
柔性电子学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Ru Song,Ningshuang Zhang,Peng Wang,Hao Ding,Jie Wang,Shiyou Li
Interfacial water evaporation has emerged as one of the environmentally friendly technologies for seawater desalination and wastewater treatment. However, salt deposition issuesignificantly threaten the long-term stability of the evaporation system. Herein, we prepared a low-density nickel sponge (NSP) with porous network structure via a hydrothermal route. After polypyrrole (PPy) coating and hydrophilic modification, the NSP can be fabricated into a Janus evaporator (PPy-NSP). Benefiting from the PPy coating and rough skeleton, the light absorption of PPy-NSP evaporator is enhanced by up to 97.5%. Combined with the wide-spectrum solar absorption of PPy and porous network architectures, the Janus evaporators feature an outstanding evaporation rate of 1.71 kg m −2 h −1 under one sun irradiation. Moreover, the asymmetric wettability of the PPy-NSP evaporator effectively prevents salt deposition, which shows excellent salt resistance performance even in 15% wt% NaCl brine. Further testing reveals that the evaporator also exhibits excellent purification effects on dye solutions and heavy metal ions wastewater. The PPy-NSP evaporator also possesses magnetic properties, self-floating, and environmental friendliness, which may hold great potential applications in desalination, sewage treatment, and electromagnetic shielding.
研究领域:
材料科学
·
环境科学
·
能源工程
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
·
2019
·Vol. 43
·期 8
·3284-3294
·
IF 3.343
Xiaoyang Wan,Xuefeng Wei,Juan Miao,Ruichang Zhang,Jun Zhang,Qingshan Jason Niu
Summary A wide compositional range of Pd-Ni/Cd on polypyrrole (PPy)-modified Ti plates (Pd-Ni/Cd/PPy/Ti) was fabricated via electrochemical deposition. The hydrogen absorption properties of the prepared Pd-Ni/Cd/PPy/Ti electrodes were evaluated using cyclic voltammetry and chronoamperometry in acidic media. The optimal Pd 36 -Ni 7 /Cd 57 /PPy/Ti electrode achieved a hydrogen storage capacity of 331.3 mC cm −2 mg −1 and an H/Pd ratio of 0.77. The enhancement of the hydrogen storage was attributed to a synergistic effect between the Pd-Ni/Cd catalysts. The surface morphology, crystallinity, and chemical composition of the Pd-Ni/Cd/PPy/Ti electrode were characterized using scanning electron microscope (SEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS), respectively. Hydrogen spillover occurred on the trimetallic catalysts, and secondary hydrogen spillover occurred on the PPy/Ti support. The enhanced hydrogen sorption capacity was due to both the synergistic effect of the trimetallic catalysts and the assistance of PPy, making Pd-Ni/Cd/PPy/Ti a promising hydrogen storage material.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2022
·Vol. 33
·期 29
·23196-23211
·
IF 2.779
Xing Honglong,Chen Wenxiong,Liu Chuang,Ji Xiaoli,Yang Ping
In this study, flower sphere alumina was synthesized autonomously by hydrothermal and annealing processes. The in situ polymerization of polypyrrole on the surface of alumina at low temperatures based on the principle of component synergy has enabled the construction of a core–shell structure for Al 2 O 3 @ppy materials, resulting in excellent electromagnetic wave absorption properties. The effect of the addition of alumina and the morphology of the materials on the microwave absorption properties of Al 2 O 3 @ppy composites was also discussed. Various methods are used for the characterization of the material. The Al 2 O 3 @ppy composites were effective in matching thicknesses of 2.5 mm with a minimum reflection loss (RL) of − 65.8 dB at a frequency of 11.52 GHz and a maximum effective absorption bandwidth (EAB) of 5.6 GHz at a matched thickness of 2.0 mm. The results show that Al 2 O 3 @ppy composites can provide a reference for EMW absorber material research.
研究领域:
材料科学
·
电磁学
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2021
·
IF 8.128
Weibo Huang,Zhouyu Tong,Yuxin Bi,Mingliang Ma,Zijian Liao,Guanglei Wu,Yong Ma,Siyu Guo,Xiaoyu Jiang,Xueping Liu
Herein, coralloid core-shell structure NiS/Ni 3 S 4 @PPy@MoS 2 nanowires were elaborately designed and successfully synthesized through a three-step route to obtain exceptional microwave absorption (MA) properties. Ni nanowires were first fabricated, and then used as the substrate to be coated with a layer of PPy . Ni chalcogenides were obtained by using Ni nanowire as sacrificial templates while growing MoS 2 nanorods by hydrothermal method . Both the one-dimensional (1D) core-shell structure and the coralloid surface generated by MoS 2 nanorods were beneficial for the attenuation of microwaves. After investigating the electromagnetic properties of different loading content absorbers (30 wt.%, 40 wt.% and 50 wt.%), it is found that the 50 wt.% loading absorber has the optimal MA performance. The minimum reflection loss (RL min ) value can reach −51.29 dB at 10.1 GHz with a thickness of 2.29 mm, and the corresponding effective absorption bandwidth (EAB, RL < −10 dB) can be up to 3.24 GHz. This research provides a reference for exploiting novel high-efficient 1D absorbers in the field of MA.
研究领域:
材料科学
·
电磁学
✓ 已验证
DOI
高影响因子
NANO
·
2026
·
IF 1.3
Congcong Bai,Hongying Hou,Wenting Mao,Runjie Wu
Poor conductivity of UiO-66 severely limited the electrochemical performances in the supercapacitors, which were alleviated and improved by combining with polypyrrole (PPy) with high conductivity and pseudocapacitive properties. Herein, a series of UiO-66@x%PPy ( x = 5 , 1 0 , 2 0 , 3 0 ) composites were prepared by solvothermal reaction followed by in-situ polymerization of pyrrole(PPy); furthermore, the influence of PPy’s loading on the structural properties was also systematically investigated. Desirably, the obtained composites maintained the “rigid-flexible” core-shell octahedral structure. Furthermore, the UiO-66@20%PPy composite exhibited the highest electrochemical performances with the specific capacitance of 204.1 F/g in a three-electrode system and 118.18 F/g in a two-electrode system at 1 A/g. Furthermore, the asymmetric two-electrode supercapacitor exhibited a high capacitance retention of 88.25% after 2000 cycles at 2 A/g. The synergistic effect between the continuous three-dimensional (3D) conductive network of PPy phase and the double-layer capacitance of porous UiO-66 framework may be responsible for the desirable results. Seemingly, an effective interfacial strategy was indeed beneficial for developing a high-performance UiO-66-based supercapacitor.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 13.2
Xiaoyan He,Xin Tian,Shuo Ma,Yuanyuan Lu,Jing Li,Yanling Liang,Zhiqiang Wang,Zhepin Tan,Xiaoquan Lu
Microbial fuel cells (MFCs) function as organic pollutant treatment systems with the unique advantage of recovering energy from waste. However, their energy recovery efficiency is often constrained when degrading toxic organic compounds. This study constructed a MFC system incorporating a TiO 2 -PPy/CF photoanode. TiO 2 with a nanoflower structure was fabricated, the loading of PPy particles on the partial surface of TiO 2 nanoflowers not only remarkably improved the MFC's power generation performance but also extended the photoresponse range of TiO 2 and efficiently suppressed the recombination of photogenerated electron-hole pairs.This electrode integrates biocatalytic and photocatalytic functions within a single structure, enabling both efficient electricity generation and phenol removal from wastewater. Under a specific solar light intensity, it achieved an impressive degradation efficiency of 77.30 % for 40 mg/L phenol within 5 h—6.1 times higher than that of the pure bacterial system (12.67 %)—thus highlighting its superior photocatalytic degradation capacity. Ultimately, with the assistance of biodegradation, the overall degradation efficiency reached 89.95 %, and the maximum power density achieved 5070 mW/m 3 . Furthermore, in contrast to the CF anode (4.32 %), the TiO 2 -PPy/CF photoanode for the first time achieved a significant increase in the abundance of Elusimicrobiota to 40.70 %, corresponding to a relative enhancement rate of ~842 % and demonstrating robust biofilm enrichment potential. Moreover, the underlying mechanism was elucidated: electron transfer is enhanced via multiple internal and external synergistic pathways, including pili and cytochromes. This work not only developed a high-performance integrated photoanode but also, critically, established a new paradigm for performance breakthroughs through the targeted modulation of functional microbial communities via electrode engineering.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Jiaqi Chen,Jianzhang Gao,Yu Liu,Chao Peng,Tianyu Li,Yun Xue,Yongde Yan,Xiangbiao Yin,Yanghai Zheng,Shengrong Guo
A binder-free, self-supporting electrode was prepared via two-step electrodeposition. • Electrosorption capacity of PPy/Cu-Co-MHM@GF electrode reached 711.2 mg/g at pH 2. • PPy coating provides amino/imino groups and protects active sites from corrosion. • The synergistic effect among multiple active sites ensures excellent uranium removal. Electrochemical technology has attracted much attention for the removal of uranium(VI). However, it still faces the contradiction of balancing electrode stability and removal capacity under acidic conditions. In this work, a conductive polymer protection strategy was proposed to construct a novel in-situ polypyrrole (PPy) encapsulated Cu 0 /CuO-Co x O y multiphase hybrid material (MHM) on graphite felt (GF). The binder-free, self-supporting composite electrode denoted as PPy/Cu-Co-MHM@GF was fabricated via a facile electrodeposition method. This electrode achieved highly efficient uranium removal under acidic conditions. At pH = 2.0, as high as 98.2% of uranium could be effectively removed by PPy/Cu-Co-MHM@GF, and the electrosorption capacity could reach 711.2 mg/g. Moreover, the PPy/Cu-Co-MHM@GF electrode had excellent selective removal ability for uranium, and the K d value reached 43,173.01 mL/g. The experimental and characterization results indicated that the outstanding electrosorption capacity of PPy/Cu-Co-MHM@GF was not only due to the formation of electrical double layer, but also originated from the synergistic effect of various types of active sites (Co(OH) 2 , CoO, CuO and PPy). PPy acted as a physical barrier to reduce H + corrosion and provided abundant amino/imino groups to enhance UO 2 2+ coordination, ultimately realizing the synergistic removal of uranium. This study has opened up new horizons for the treatment of acidic radioactive wastewater. Download: Download high-res image (216KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）