Journal of Chemistry
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2023
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IF 3
Hao Fu,Aotian Gu,Peng Wang,Chunhui Gong,Zhiying Li,Kai Chen,Yi Yang
The exploration of transforming various metals as metal sources into metal organic frameworks (MOFs) has attracted considerable attention in recent years. This study used triethylamine and 5,6-dimethylbenzimidazole (DMBIM) to modify the iron-doped cobalt zeolite imidazole framework on carbon fiber structure. The results showed that the ZIF(Fe/Co)1.25@CNF exhibited high CEF removal efficiency that over 97% of ceftiofur sodium (CEF) was removed within 10 min, which was significantly higher than that of the common ZIF-67 materials. Compared with other ZIF-67 composites, ZIF(Fe/Co)x@CNF has a larger specific surface area, resulting in a larger contact area and more active sites during the reaction. After the introduction of DMBIM, the ZIF(Fe/Co)1.25@CNF not only easily separated from the solution but also enhanced the hydrophobicity, which provided higher catalytic stability and catalytic performance. In addition, the effects of different catalyst ratios, pollutant concentrations, solution pH, and different radicals (•OH, SO4•−, 1O2) on the activation of peroxymonosulfate (PMS) were investigated. The mechanism of degradation was elucidated by electron paramagnetic resonance experiments. This study provides a new perspective for the preparation of high-performance MOF catalysts with excellent catalytic performance and may facilitate the application of MOF materials in more practical situations.
研究领域:
环境科学
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材料科学
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药物化学
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产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
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2022
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IF 10.723
Yang Wang,Liweng Ma,Feng Xu,Rongkai Ren,Jianzhi Wang,Chen Hou
The novel photocatalytic advanced oxidation catalyst, ZIF-67@MXene-TA-CNF (ZIF-67@MTC) aerogels , was prepared via introducing tannic acid-coated cellulose nanofibril (TA-CNF), two-dimensional layered MXene, and ZIF-67 into a composite aerogel network. Specially, TA assisted the crosslinking of CNF through hydrogen bonds to construct the flexible aerogel skeleton, accompanied by assembly of MXene and ZIF-67. MXene not only provided sufficient attachment sites for the anchoring of ZIF-67, but also can be used as a repository for electron transfer to facilitate the separation of photogenerated electrons and holes. In the peroxymonosulfate (PMS)/aerogels/visible light system, the SO 4 - , OH and 1 O 2 were generated, and 1 O 2 was the main reactive species. As a result, 99.9 % of Tetrabromobisphenol A (TBBPA) can be degraded and the total organic carbon (TOC) removal efficiency reached 81.8 % within 40 min in this system. The results might provide a new concept for the design of biomass aerogels for applications in organic pollutant removal.
研究领域:
环境科学
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材料科学
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化学工程
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纳米技术
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产品关联
DOI
PubMed
高影响因子
Sustainable Energy & Fuels
·
2021
·Vol. 6
·期 2
·440-448
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IF 6.367
Xin Liang,Lulu Wang,Yang Wang,Yongchao Liu,Yi Sun,Hongfa Xiang
The functional design of separators has been proved to be one of the most efficient methods to improve the electrochemical performance of lithium–sulfur batteries. In this work, a multifunctional separator with gradual changes to four aspects was constructed by integrating a PVDF-HFP/h-BN membrane with a Co-doped carbon nanofiber. The architecture has four gradations, which offers multifold advantages. First, in terms of density, there is a transition from loose to dense, which results in a higher electrolyte uptake rate, reduces the amount of free electrolyte and further suppresses the shuttle effect. Additionally, in terms of composition, a transition from inorganic to organic is designed, which allows the inorganic and organic components to bind closely and reduces the interfacial resistance. Meanwhile, there is a transition from high electronic conductivity to insulation. The change in electronic conductivity leads to effective conversion of the polysulfide. Finally, in terms of ionic conductivity, there is a transition from low to high, which gives the separator better ability to conduct lithium ions. As a consequence, a battery with the as-constructed multifunctional separator performs with good capacity stability, which demonstrates a new concept for high-performance lithium–sulfur battery design.
研究领域:
材料科学
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储能技术
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电池技术
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DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
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2024
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IF 8.1
Yu He,Yuanya Zhang,Xiangqian Xu,Yanlin Zhu,Yuxiang Liu,Junya Yuan,Xuehu Men
Tribological behaviour of polyurethane/epoxy interpenetrating polymer network (PU/EP IPN) as friction materials was investigated. This was a combination of the good flexibility of PU and high hardness of EP to realize polymer synergistic effect of interpenetrating network structure, aiming to broaden and develop the application of polymer-based composites in friction engineering materials. A novel CNF/MXene/WPU aerogel (CMW) was prepared by employing flexible NCO-terminated waterborne polyurethane prepolymer (WPU) as the supporting skeleton of aerogel, and synchronously combining the reinforcing-phase carbon nanofibers (CNF) and lubricating-phase MXene. Subsequently, the prepared ultralight porous yet mechanically robust CMW aerogels were encapsulated with IPN by vacuum impregnation. As expected, the addition of aerogel imparted IPN matrix with enhanced thermal and tribological properties due to the thermal dispersion and enhancement effects conferred on the matrix by the highly aligned and ordered three-dimensional interconnected structure of aerogel. Meanwhile, CMW reinforced IPN composites were explored for the formation of a high-quality transfer film on the contact surface during friction. The transfer film prevented direct contact between the friction couples, which facilitated the improvement of wear resistance of composites, thus giving this material great potential for tribological applications.
研究领域:
材料科学
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摩擦学
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2022
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IF 9.136
Qingshui Fan,Xiaoxiang Cheng,Xuewu Zhu,Congwei Luo,Huixue Ren,Daoji Wu,Heng Liang
In this study, a heterogeneous carbon nanofiber supported Co 3 O 4 (Co 3 O 4 @CNF) catalyst was prepared, and peroxymonosulfate (PMS) oxidation activated by Co 3 O 4 @CNF integrated with ultrafiltration (UF) membranes was proposed for treating secondary wastewater. The micromorphology and chemical composition of Co 3 O 4 @CNF were characterized by various techniques, demonstrating the successful synthesis of Co 3 O 4 @CNF. The prepared catalyst exhibited superior catalytic performance for PMS, accompanied by the formation of various reactive oxygen species, including • OH, SO 4 •− , 1 O 2 and O 2 •− . The Co 3 O 4 @CNF/PMS system substantially enhanced the removal of effluent organic matter (EfOM), and the DOC and UV 254 values were decreased to 3.8 mg/L and 0.032 cm −1 , with removal rates of 46.5% and 58.4%, respectively. The reduction efficiency of various fluorescent components was also improved, while macromolecular and humic substances were significantly reduced, accompanied by the generation of some small molecular organics. For both polyether sulfone and ceramic membranes, the fouling caused by EfOM was effectively mitigated, with the irreversible fouling resistance reduced by 65.6% and 83.9%, individually. The main fouling mechanism was also changed by increasing the specific filtration volume for the formation of cake filtration. The effectiveness of Co 3 O 4 @CNF/PMS for fouling mitigation was verified through the characterization of the surface morphology and functional groups of the membranes. The results suggest that the process of PMS activated by Co 3 O 4 @CNF integrated with UF has an application potential for secondary wastewater treatment.
研究领域:
环境工程
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水处理
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催化
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膜技术
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2022
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IF 16.744
Yangmin Wu,Wenjie Zhao,Sheng Liu,Liping Wang
Cellulose nanofiber was grafted on Ti 3 C 2 T x (Ti 3 C 2 T x @CNF) and then Ti 3 C 2 Tx@CNF nanohybrid acted as nanofiller to endow epoxy coating superior barrier property. Electrochemical tests and corrosion products revealed that incorporation of Ti 3 C 2 T x @CNF into epoxy could significantly improve its anti-corrosion performance. Even immersion in marine alternating hydrostatic pressure (AHP) environment for 240 h, the impedance modulus of composite coating was one order of magnitude higher as compared with controlled samples. Besides, cross-sectional structure confirmed that Ti 3 C 2 T x @CNF remarkable improve the compactness of coating and thus conferring active adhesion strength with twice higher than that of pure epoxy after 240 h immersion in AHP.
研究领域:
材料科学
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腐蚀工程
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纳米技术
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涂料与薄膜
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产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
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2025
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IF 7.3
Xue Fu,Shuyan Xu
Superhydrophobic coatings, inspired by lotus leaves, have gained significant interest due to their multifunctional properties. However, their mechanical wear resistance is often inadequate, resulting in a limited lifespan. This study aims to create a wear-resistant superhydrophobic composite coating using epoxy resin (EP) as a binder, along with SiO 2 modified by hexadecyltrimethoxysilane (HDTMS) and cellulose nanofibers (CNF) modified by KH570 to enhance performance synergistically. The preparation method is environmentally friendly and does not involve fluorine chemicals. A simple and efficient one-step spraying technique is employed to create a micro-nano hierarchical structure on the substrate surface. SiO 2 contributes to surface roughness, CNF serves as a toughening agent to form a three-dimensional network, and EP provides strong adhesion. This composite structure significantly improves the mechanical durability of the coating while preserving excellent superhydrophobic properties. The coating is compatible with various substrates and retains good hydrophobicity even after extensive abrasion and tape peeling. Additionally, the superhydrophobic coating demonstrates outstanding anti-fouling and self-cleaning capabilities, resistance to acids and bases, and strong adhesion. We believe this research offers innovative approaches for developing fluorine-free, wear-resistant superhydrophobic coatings.
研究领域:
材料科学
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表面工程
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纳米技术
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高分子科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2024
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IF 6.3
Dongao Liu,Lei Li,Quanxin Gong,Gui Du,Yuhua Xue,Guisheng Li,Shengjuan Li
Developing high-performance and cost-effective microwave-absorbing materials for large-scale production is crucial in addressing the current electromagnetic pollution problem. This has become a focus of scientific research. This study proposes a cost-effective freeze-thaw method to enable large-scale production of MXene-based flexible films. This method streamlines the preparation process and produces ultrathin flexible MXene/CNF composite films with a multidimensional layered structure. The multidimensional layered structure provides additional scattering and reflecting paths for electromagnetic waves, increasing the interaction time between electromagnetic waves and the material. Additionally, the redistributed interfacial charge enhances the dielectric loss and electromagnetic shielding performance for the shielding material, thereby improving microwave absorption efficiency. Owing to these advantages, the MXene/CNF composite films prepared using the freeze-thaw method exhibit excellent electromagnetic shielding and mechanical properties. The conductivity of the composite film can reach 165.9 S cm −1 with a shielding effectiveness of 54.7 dB, and a high efficiency of 99.74 %. According to the simulations using a finite element method (FEM), the arrangement and rotation angles of all CNF layers significantly affect the electromagnetic shielding effectiveness of the MXenen/CNF composite films.
研究领域:
材料科学
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电磁学
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
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2024
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IF 5.6
Yuhe Wei,Xiaoping Sun,Yanfen Sun,Juan Yuan,Haoqiu Chen,Lianxin Luo
Self-powered flexible electronic devices are being rapidly developed rapidly for the field of sensing and motion monitoring, posing greater challenges to friction electrical materials. Triboelectric hydrogels must be enhanced in terms of their electrical conductivity and mechanical strength to address the poor stability, low sensitivity, and susceptibility to unpredictable physical damage of conventional hydrogels. In this study, multinetwork polyacrylamide (PAM)-agar (AG)/nanofibrillar cellulose (CNF)-MXene triboelectric hydrogels with homogeneous structures were prepared. By adopting AG and CNF as "sacrificial bonding" modes and utilizing the high conductivity of MXene , triboelectric hydrogels were found to have good electrical conductivity, high tensile properties , high tensile strength , and high sensitivity. Single-electrode triboelectric nanogenerators made of triboelectric hydrogels were used as self-powered wearable sensors for accurately detecting the amplitude of movement in different parts of the human body during exercise. The results obtained in this study have positive implications for promoting the design of high-performance hydrogel materials and their application in flexible wearable sensors.
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
BIOELECTROCHEMISTRY
·
2024
·
IF 4.8
Li Zhang,Ming Yin,Xiuxia Wei,Yiwei Sun,Yuting Luo,Huaqing Lin,Ruxin Shu,Dongpo Xu
Fe-Co@CNF was synthesized by electrospinning technology, and AuNPs was loaded onto Fe-Co@CNF by in-situ reduction to obtain Fe-Co@CNF@AuNPs composite material, which was used as the working electrode based on Au-S bond cooperation. The tetracycline electrochemical sensing interface Fe-Co@CNF@AuNPs@Apt was constructed by connecting mercaptoylated tetracycline (TC) aptamers on Fe-Co@CNF@AuNPs surface. The morphology and composition of Fe-Co@CNF@AuNPs composites were characterized by SEM, TEM, EDS, XRD and XPS, and the electrochemical properties of tetracycline were evaluated by CV and DPV. The results showed that the addition of Fe and Co did not destroy the structure of the original carbon nanofibers, and their synergistic effect enhanced the electrocatalytic performance, effective electrode area and electron transfer ability of carbon nanofibers. AuNPs are evenly distributed over the fibers, which effectively improves the electrical conductivity of the material. Under the optimal conditions, the theoretical detection limit of tetracycline was 0.213 nM, and the linear detection range was 5.12–10 mM, which could successfully detect tetracycline in milk.
研究领域:
分析化学
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纳米材料科学
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环境监测
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2019
·
IF 7.015
Mingmin Jia,Xiong-Fei Zhang,Yi Feng,Yichen Zhou,Jianfeng Yao
ZIF-8@cellulose nanofiber (ZIF-8@CNF) composite membranes were prepared via in-situ growing ZIF-8 crystals on cellulose nanofibers (CNFs) and vacuum filtration. Owning to the electrostatic forces between –COO - of CNFs and Zn 2+ of ZIF-8, ZIF-8 crystals were anchored homogenously on CNFs. With ZIF-8 loading increased to sufficiently high, the intrinsic selectivity of ZIF-8 played an important role for gas separation. As a result, the optimum separation performance is achieved over ZIF-8@CNF-70 composite membrane with CO 2 permeability of 550 Barrer and CO 2 /N 2 and CO 2 /CH 4 ideal selectivity of 45.5 and 36.2, respectively.
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
JOURNAL OF ELECTRONIC MATERIALS
·
2025
·
IF 2.5
Chen Haodong,Wang Jinfei,Zhao Zichao,Lei Yucan,Shu Fan,Chen Quanfang
Porous structures such as the dielectric layer have been identified as an effective way to enhance the performance of capacitive tactile sensors and aerogels as three-dimensional structured materials with high porosity and excellent mechanical properties, which have been shown to have the potential to further improve the overall performance of capacitive sensors. However, the inherent low compressive modulus of elastic aerogels limits their functionality, especially when subjected to larger pressure ranges, posing a challenge for extending the working pressure range of aerogel-based sensors. In this work, we combined graphene oxide (GO) with cellulose nanofibers (CNF) and polydimethylsiloxane (PDMS) to form a composite aerogel as the dielectric layer in a capacitive tactile sensor, aiming to overcome the inherent shortcomings associated with conventional aerogels. The results demonstrated that the composite aerogels preserved high porosity and exhibited superior elastic properties to significantly enhance the overall performance of the tactile sensor. The sensor exhibits a sensitivity of up to 1.7 kPa −1 , within a working range of 80 kPa, together with a rapid response time of 46 ms and a relaxation time of 92 ms. Additionally, the sensor featured an ultra-low detection limit of 30 Pa and maintained excellent stability under continuous load cycles. The performance and the flexibility of the sensor fit well for tactile perception and wearable detection applications.
研究领域:
材料科学
·
传感器技术
✓ 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）