INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Jingxuan Zhao,Hongxu Liu,Yuanhang Zhao,Yuchao Qi,Ruijia Wang,Ziwei Lv,Yang Yu,Shulin Sun,Yiming Wang,Aihua Xie
Currently, the most effective way to improve the anti-fouling performance of water treatment separation membrane is to enhance the hydrophilicity of the membrane surface, but it can still cause contamination, leading to the occurrence of flux reduction. The construction of a strong hydration layer to resist wastewater contamination is still a challenging task. In this study, a defect-free hydration layer barrier was achieved by grafting chitosan polysaccharide derivatives (CS-SDAEM) on the membrane, which achieved in effective fouling prevention and low flux decline rate. A layer of tannic acid-coated carbon nanotubes (TA@CNTs) has been uniformly deposited on the commercial PVDF membrane so that the surface was rich in -COOH groups, providing sufficient reaction sites. These reactive groups facilitate the grafting of amphiphilic polymers onto the membrane. This modification strategy achieved in enhancing the antifouling performance. The modified membrane achieved low contamination rate with DR of 16.9 % for wastewater filtration, and the flux recovery rate was above 95 % with PWF of 1100 (L·m −2 ·h −1 ). The membrane had excellent anti-fouling performance, which provided a new route for the future development of water treatment membrane.
研究领域:
环境科学
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材料科学
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水处理技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2025
·
IF 7.8
Donghai Wu,Chenchen Yi,Guanghua Lu,Chao Zhou,Jun Hou
Pharmaceuticals and personal care products (PPCPs) pose potential risks to aquatic ecosystems and human health. This work developed an ozonation-assisted electrochemical filtration (OAEF) system using a Ti 3 C 2 T x /CNTs composite membrane electrode and systematically investigated its efficiency, mechanisms, and practicality for PPCPs removal. The results suggest that the excellent adsorption and hydrophilic properties of Ti 3 C 2 T x , combined with its formation of an optimized membrane structure when mixed with CNTs, significantly enhanced the pollutant adsorption capacity and water permeation flux of fabricated electrode. Ozone incorporation in the electrochemical filtration process facilitated pollutant abatement, achieving approximately 99 % degradation and 42 % mineralization of fluoxetine (FLX), a representative PPCP. Moreover, the OAEF system demonstrated broad pH suitability and good stability, effectively detoxifying FLX-contaminated wastewater. The analysis of oxidants and electrode component evolution in the OAEF system, combined with density functional theory (DFT) calculations, revealed that enhanced mass transfer and electron transport promoted electro-peroxone initiation and reactive oxygen species (ROS) generation, thereby improving pollutant elimination and regenerating the adsorption capacity of electrode. Further analysis of 34 PPCPs treatment using quantitative structure-activity relationship (QSAR) models indicated that adsorption on the Ti 3 C 2 T x /CNTs was primarily influenced by pollutant solubility, C O bond content, dipole moment, and molecular weight, while degradation was significantly impacted by aromatic ring content, highest occupied molecular orbital (HOMO) energy, lowest unoccupied molecular orbital (LUMO) energy, and solubility. Additionally, the Ti 3 C 2 T x /CNTs membrane electrode exhibited satisfied fouling mitigation during the treatment of real surface water, suggesting that the OAEF process is feasible for practical applications.
研究领域:
环境科学
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水处理技术
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2020
·
IF 7.183
Caini Liu,Wenyi Wang,Liuyong Zhu,Fangyan Cui,Chengcheng Xie,Xingyu Chen,Ning Li
A structurally controlled polyethersulfone (PES) membrane, as the substrate of the thin film composite nanofiltration (NF) membranes, was designed and fabricated with aligned carbon nanotubes (ACNTs) by a direct current electric field. The morphology and properties of the NF membranes were simultaneously affected by the PES substrate with especial macrovoids and ACNTs, increasing the permeability from 6.4 to 29.7 L/m 2 h bar. It was confirmed by FT-IR and XPS that the poly(piperazine amide) selective layer of the modified NF membrane has an increased content of –COOH for enhanced hydrophilicity. The zeta potential proves that the surface of the NF membrane modified by electric field has weaker negative charge than that of unmodified membrane in the range of pH = 5–9. Under the combined action of the Donnan effect and size exclusion, the rejection of MgCl 2 increased while maintaining the dianion rejection above 95%. Particularly, the NF membrane modified with ACNTs exhibited better chlorine resistance and antifouling ability, thus improving the stability and perdurability of membranes. Our work utilizes the characteristics of ACNTs to explore its potential in NF membranes.
研究领域:
材料科学
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化学工程
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2020
·
IF 16.683
Yiwen Huang,Guijuan Wei,Jia He,Cuihua An,Min Hu,Miao Shu,Junfa Zhu,Shuang Yao,Wei Xi,Rui Si,Zhi-Ming Zhang,Changhua An
The exploration of highly-efficient oxygen evolution reaction (OER) electrocatalyst with well-defined structure to understand specific structure-performance relationship is crucial to meet the requirement of water-splitting. Herein, we firstly used atomically dispersed IrCl x to uniformly decorate ultrathin Co(OH) 2 nanosheets to dramatically improve electrocatalytic activity. The synthesized IrCl x -Co(OH) 2 nanosheets/carbon nanotubes (CNTs) exhibits an overpotential of 230 mV to reach 10 mA/cm 2 , which was much enhanced compared to that of pristine Co(OH) 2 /CNTs (308 mV) and commercial benchmark IrO 2 (309 mV). X-ray absorption fine structure and density functional theory simulations demonstrate strong interfacial interaction between IrCl x and Co(OH) 2 nanosheets via the Cl-Ir-O and Ir-Cl-Co bond can efficiently boost its electronic conductivity. The accelerated charge transfer promotes the formation of more positively charged O atoms around cobalt centers, which is beneficial for the deprotonation on IrCl x -Co(OH) 2 and makes the catalyst facilitate OER.
研究领域:
电化学
·
材料科学
·
催化
✓ 已验证
产品关联
DOI
高影响因子
Advanced Composites and Hybrid Materials
·
2024
·Vol. 8
·期 1
·1-14
·
IF 23.2
Zhang Minyue,Liu Si,Liu Shun,Jia Gaoen,Zhan Pengfei,Liu Chuntai,Shen Changyu,Liu Hu
In recent years, as wearable electronics continue to advance toward flexible, lightweight, and versatile designs, flexible pressure sensors with wide response ranges and high sensitivity have shown tremendous research value and application potential. In this study, we fabricated TPU-based flexible pressure sensors with a multistage gradient porous structure using layer-by-layer freezing and solvent templating techniques. Due to the layered differences in Young’s modulus from varying porosities, these sensors exhibit high pressure sensitivity ( S , S MAX = 34.08 MPa −1 ) and can accurately distinguish stresses across a wide range (0–1.2 MPa). Additionally, they demonstrate rapid response and recovery times (140 ms), durability over 3000 compression cycles, and the ability to detect both subtle movements (facial expressions and swallowing) and larger actions (joint bends, walking, and running). Furthermore, we developed a smart glove using these gradient-structured pressure sensors combined with a K-nearest neighbor (KNN) algorithm, enabling accurate identification of various fruit types. Notably, the TPU sensors also exhibit excellent thermal insulation and Joule heating properties, making them effective for human thermal management even in extreme temperatures.
研究领域:
材料科学
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电子工程
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人工智能
✓ 已验证
DOI
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
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2022
·
IF 7.305
Kunyu Sun,Hongzhi Cui,Ruiqi Xu,Li Wang,Menghan Li,Zeyu Yang,Minggang Zhao,Na Wei
Solar steam generation technology is considered as a facile and effective way to produce clean water from undrinkable water resources. Herein, a composite material with a novel 3D structure has been proposed for steam generation. By developing porous NiAl, which exhibiting high strength and corrosion resistance , and carbon nanotubes (CNTs), fabricated via self-propagating reaction (SHS) and chemical vapor deposition (CVD) methods, respectively, the composite materials of NiAl/CNTs and 3D structures have been created. The results shows that the 3D composite materials of NiAl/CNTs possess high porosity (≥72.8%), open-pore structure can provide abundant passage for water transportation and steam escape. In particular, the combination of the extraordinary light absorption properties of CNTs and the multiple scattering of light in the 3D porous NiAl pores grants the materials with an excellent broad-band light absorption rate (94.4%) and high evaporation rate (2.41 kg m −2 h −1 ) under 1 sunlight irradiation. Furthermore, the NiAl/CNTs composite materials with 3D structure shows good purification effect on heavy metal ion , such as Cr 3+ , Cd 2+ , Cu 2+ , Pb 2+ , and Zn 2+ and organic pollutants of RhB , as well as have excellent stability in simulated seawater and sewage. The findings provide guidance for the design of new high-performance materials that perfectly combine traditional 3D porous materials and CNTs for seawater desalination and sewage treatment .
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Junjie Hao,Ning Li,Jingkai Lin,Chaorui Xue,Qing Chang,Xiangqian Fan,Huinian Zhang,Caihong Hao,Huayang Zhang,Shengliang Hu
Photocatalytic hydrogen production holds promise for solar energy conversion but is limited by inefficient charge separation and sluggish interfacial kinetics. Here, we construct a Pt@carbon nanotubes (CNTs)/ZnIn 2 S 4 (ZIS) heterostructure, where Pt-decorated CNTs intertwine and embed within ZIS microspheres. The CNTs not only guide ZIS nucleation but also serve as conductive channels and spatial confinement scaffolds, forming a well-integrated architecture for efficient carrier transport. This heterostructure operates via a thermo-electronic channel engineering strategy, integrating dual photothermal activation (arising from CNTs lattice vibrations and Pt plasmonic effects) with Schottky junction modulation. The resulting localized heating, in concert with the built-in electric field, synergistically enhances charge separation, facilitates hot electron generation, and accelerates interfacial reaction kinetics. The hierarchical architecture enables a three-dimensional hot-carrier migration pathway, efficiently directing electrons from the interior of ZIS to Pt active sites through CNTs. Consequently, the heterostructure achieves a hydrogen evolution rate of 51.4 mmol g −1 h −1 , 103 times higher than pristine ZIS. This work thus presents a multifunctional design paradigm that integrates efficient light harvesting, interfacial charge regulation, and thermal enhancement, providing a viable route toward highly efficient solar-driven hydrogen production.
研究领域:
材料科学
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纳米技术
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能量转换
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催化
·
物理化学
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS A-PHYSICAL
·
2022
·
IF 4.291
Minghui Xie,Shuangxin Li,Xiaoming Qi,Zhangyi Chi,Luting Shen,Zahidul Islam,Yubing Dong
Wearable electronic gadgets have always been in great demand for multifunctional flexible strain sensors. However, developing a flexible strain sensor with excellent characteristics such as high sensitivity, wide sensing range, and excellent durability continues to be a significant challenge. On the one hand, the two-performance metrics of high sensitivity and wide sensing range are mutually exclusive, because the former requires significant structural changes under small strains, whereas the latter necessitates the preservation of morphological integrity under large deformations . On the other hand, the usage of flexible strain sensors is invariably accompanied by the destruction of the conductive network, rendering the device unusable for an extended period of time. Here, based on the unique strain related microcrack structure of the Ti 3 C 2 T x (MXene)/carbon nanotubes (CNTs) synergistic interaction and the shape memory property of ethylene vinyl acetate polymer (EVA), a MXene/CNTs/EVA fiber strain sensor was innovatively designed and prepared by swelling ultrasonic method. The results showed that the sensor combines a large strain sensing range (190%), high sensitivity (82.5), ultra-fast response speed (178.9 ms), and excellent durability and stability (> 10,000 cycles). What is even more exciting is that if the strain sensor is failure, it can be repaired by heating for 2 min or infrared irradiation for 5.4 s, and the mechanical and electrical properties of the repaired sensor can be restored to 92% and 94% of the original. In addition, this strain sensor can accurately monitor subtle and large movements of the human body (including elbow and finger bending, speaking, and mouth opening/closing), even if the damaged MXene/CNTs/EVA fiber strain sensor has been repaired. The self-repairing MXene/CNTs/EVA composites fiber-based shape memory matrix has excellent potential as a wearable strain sensor.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Mian Gao,Zhitao Shen,Gentian Yue,Chen Dong,Jihuai Wu,Yueyue Gao,Furui Tan
Developing a synthesis method for large-scale preparation of efficient and economical non noble metal counter electrode (CE) electrocatalytic materials with good catalytic ability and stability is an ideal choice for the commercialization of dye-sensitized solar cells (DSSCs). In this paper, a novel micro-nanostructured composite of CE was prepared by fixing the In 4 SnS 8 and MoS 2 on carbon nanotubes (CNTs) and using a one-step hydrothermal strategy. The devices based on the In 4 SnS 8 @MoS 2 @CNTs composite CE performs high power conversion efficiency of 8.72%, far more than that of the device with the control ones (7.57%). The In 4 SnS 8 @MoS 2 composite were homogeneously distributed on the CNTs surface to form a new In 4 SnS 8 @MoS 2 @CNTs composite network heterojunction . This distinctive porous structure can provide greater contact area and electronic transmission channel to ensure fast charge transport of electrolyte. The prefect electrochemical properties of the In 4 SnS 8 @MoS 2 @CNTs CE for the I − /I 3 − electrolyte also have been demonstrated by a series of electrochemical tests. As a result, it can be considered that the In 4 SnS 8 @MoS 2 @CNTs will replace the Pt CE and has broad application prospects in DSSCs.
研究领域:
材料科学
·
能源科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2017
·
IF 3.133
Lei Hu,Ruohan Lu,Lingfei Tang,Ran Xia,Chunfu Lin,Zhibin Luo,Yongjun Chen,Jianbao Li
As a recently developed anode material for lithium-ion batteries, Ti 2 Nb 10 O 29 shows high theoretical/practical capacities and safety, but suffers from a poor rate capability due to its insulator nature and insufficient Li + -ion diffusion coefficient . To tackle this issue, a strategy combining nanosizing, Cr 3+ –Nb 5+ co-doping and carbon nanotube (CNT) compositing is employed. A novel TiCr 0.5 Nb 10.5 O 29 /CNTs nanocomposite with 9.1 wt% CNTs is fabricated by a direct hydrolysis process followed by calcination in N 2 . The Cr 3+ –Nb 5+ co-doping significantly improves the electronic conductivity and Li + -ion diffusion coefficient of Ti 2 Nb 10 O 29 by three orders and one order of magnitude, respectively. The CNT compositing not only enhances the electrical conduction among the TiCr 0.5 Nb 10.5 O 29 particles but also hinders the particle growth in the hydrolysis process, leading to the small particle sizes. Due to the synergistic effect of these advantages, the TiCr 0.5 Nb 10.5 O 29 /CNTs nanocomposite exhibits a high rate capability with a high capacity of 206 mAh g −1 at 20 C, surpassing those of Ti 2 Nb 10 O 29 (145 mAh g −1 ) and TiCr 0.5 Nb 10.5 O 29 nanoparticles (187 mAh g −1 ). Additionally, TiCr 0.5 Nb 10.5 O 29 /CNTs delivers a high reversible capacity (297 mAh g −1 at 0.1 C) and cyclic stability (95.0% capacity retention after 100 cycles at 10 C). This good electrochemical performance reveals that TiCr 0.5 Nb 10.5 O 29 /CNTs can be an advanced anode material for high-performance Li + -ion storage.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Jingxuan Zhao,Hongxu Liu,Yuchao Qi,Ruijia Wang,Ziwei Lv,Yang Yu,Shulin Sun
With the rapid development of industry, the problem of water pollution has become increasingly serious. Though there are many separation materials available to solve this problem, how to separate multiple wastewater at the same time remains a challenge. Hydrogel coating is suitable for use in the field of oil–water separation, and chitosan (CS) is effective in removing anionic dyes. Therefore, the preparation of separation membranes with hydrogel coating containing CS and dopamine (DA) can effectively separate oil–water emulsion and anionic dye wastewater. In this paper, DA@CNTs/CS hydrogel coating was prepared by sequentially coating Cu 2+ , DA@CNTs, Cu 2+ and CS on the surface of polyvinylidene fluoride (PVDF) membrane by deposition of self-assembly, which enhanced the hydrophilicity of the membrane and made it highly underwater oleophobic and antifouling. The alkali treated PVDF membrane contained a large amount of –OH, Cu 2+ , which formed coordination bonds with –OH, CS, and DA and the hydrogel coating could be stably loaded on the membrane. In addition, the introduction of rigid CNTs effectively improved the performance of the modified membrane under extreme conditions such as high pH and high salt concentration. PVDF-DA@CNTs/CS membrane had an ideal pure water flux (PWF) of 1470 (L·m −2 ·h −1 ) and the separation efficiency of 99.7 % for anionic dye and 99.4 % for oil–water emulsion. The contaminant on the membrane surface can be quickly removed by washing with DI water. The overall performance of the membrane is also maintained at a very high level of long-term filtration of wastewater. In summary, this study provides a new approach to complex wastewater treatment technology.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Yang Yu,Ying Xue,Jingxuan Zhao,Ke Ning,Shulin Sun
The global water pollution problem is increasingly severe, and the wastewater separation technology has received high attention. Polyvinylidene fluoride (PVDF) fiber membranes have a great potential in wastewater treatment. However, its large pore size and high porosity lead to low retention rate and high contamination, which make it impossible to reuse. In this study, it was assumed that the modified nanoparticles CNTs-COOH@TA were prepared by modifying CNTs with tannic acid (TA) through π-π conjugation, and were used as the support layer of the PVDF matrix by electrostatic spinning. The chitosan hydrogel was tightly bound to the PVDF-CNTs-COOH@TA nanofiber support through hydrogen bonding and electrostatic interaction to confer the strong hydrophilicity on the surface of the composite fiber membranes, and the composite PVDF-CNTs-COOH@TA-CS membranes should have excellent performance in PVDF water treatment. The PVDF-CNTs-COOH@TA-CS composite fiber membrane should have high hydrophilicity, high retention rate and reusability. Compared to other separation membranes, the composite membranes achieved effective separation of the oil-in-water emulsion and the dye wastewater while maintaining the rapid permeation of the aqueous phase. The pure water flux of the optimum CS3 composite membrane was 1907.8 Lm -2 h -1 bar -1 , which could completely separate oil-in-water emulsion and retain more than 90% of dyes. In addition, the flux recovery rate (FRR) of the CS3 composite membrane was still more than 86.8% after five cycles, and which had a good antifouling ability. The maximum tensile strength of CS3 increased by 279.7% over PVDF fiber membrane. This innovative approach based on synergistic modification of natural materials provides new ideas for the development of efficient and environmentally friendly wastewater treatment technologies.
研究领域:
环境科学
·
材料科学
·
污水处理技术
✓ 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）