Journal of Environmental Chemical Engineering
·
2023
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IF 7.7
Xiaoxiang Cheng,Yinuo Liu,Xinsheng Luo,Xuewu Zhu,Jingtao Xu,Xinyu Zhang,Daoji Wu,Feiyong Chen,Heng Liang
The construction of replaceable dynamic membranes (DMs) on membrane surfaces is a promising strategy to effectively mitigate membrane fouling . Nevertheless, the efficiency of DMs in mitigating membrane fouling remains low due to the lack of microstructural configurations. Herein, we report a natural sepiolite (SEP) DM with a three-dimensional (3D) network structure for mitigating PES ultrafiltration (UF) membrane fouling. The abundant oxygen-containing groups on the surface of SEP nanofibers endowed SEP DM with good organic adsorption capacity, hindering the migration of contaminants such as humic acid (HA) and bovine serum albumin (BSA). Owing to the porous 3D network structure, SEP DM prevented the formation of a dense filter cake layer, which effectively mitigated the sharp rise in membrane resistance when filtering ideal HA and BSA solutions. For the actual secondary wastewater, SEP DM improved the removal of UV 254 and DOC by 29.8% and 22.5%, respectively, over the pristine PES membrane. The decrease in membrane-specific flux was mitigated by about 20%. Notably, the dynamic nature of SEP DM allowed the contaminated DM layer to be replaced by hydraulic cleaning, resulting in 99% flux recovery (only 89% for the pristine PES membrane). These findings are beneficial in providing new ideas for the mitigation and control of UF membranes.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
RSC Advances
·
2019
·Vol. 9
·期 70
·41038-41049
·
IF 3.049
Yang Wang,Jian Yang,Zhaofeng Chen,Yunlong Hu
A new ultralight carbon foam/Ti3C2TX (CF/MXene) electromagnetic (EM) absorbing hybrid with three-dimensional network structure was fabricated by vacuum impregnation and freeze-drying process. These hybrids display excellent flexibility and steady compression-resilience properties and also the special three-dimensional structure with ultralow density of only 5–7 mg cm−3 shows higher EM absorption than most foam-based EM absorbers. Studies have shown that the minimum reflection loss of CF/MXene-N2 reaches −45 dB at 8.8 GHz with the Ti3C2TX nanosheets content of 9.8%. In the meanwhile, the effective absorption bandwidth of CF/MXene-N2 can also reach up to 5 GHz (from 6.9 GHz to 11.9 GHz) with the thickness of 4.5 mm. Moreover, the fundamental EM absorption mechanism of CF/MXene hybrids involved to impedance matching, conductive loss and polarization loss is carefully analyzed. Thus, it is expected that the new ultralight carbon foam/Ti3C2TX hybrids with three-dimensional network structure will have great application prospects in the fields of EM absorption.
研究领域:
材料科学
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电磁学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
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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
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生物医学工程
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分析化学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
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IF 4.9
Huidan Guan,Miao Lei,Dongxue Liu,Junpeng Guo,Ling Yan,Tian Chen,Ye Li
A novel La-Zr@SA/NIPAM adsorbent was synthesized through bimetallic modification of sodium alginate (SA) and acrylamide (NIPAM)-based hydrogel for efficient phosphate removal. Compared to conventional adsorbents, La-Zr@SA/NIPAM exhibits abundant active sites and remarkable selectivity for phosphorus, with a maximum adsorption capacity of 105.3 mg/g for phosphate. The material properties were thoroughly characterized using scanning electron microscopy-energy dispersive X-ray analysis (SEM-EDS), N 2 adsorption/desorption isotherms, Fourier transform infrared (FTIR), and X-ray photoelectron spectroscopy (XPS) techniques. N 2 adsorption/desorption isotherms analysis showed that the specific surface area was 125 m 2 /g and consisted mainly of mesopores, and the network structure was clearly observed in the SEM images to provide a good support structure for the adsorbent. Meanwhile, the study investigated the impacts of pH, temperature, concentration, coexisting competitive ions, recycling regeneration, and actual wastewater on phosphate adsorption. The adsorption process is exothermic and spontaneous, favored by higher temperatures. Kinetic and thermodynamic studies support pseudo-secondary kinetics and Langmuir modeling indicating monolayer chemisorption. Cycle regeneration and real wastewater experiments demonstrated that La-Zr@SA/NIPAM maintained 80 % phosphate removal even after six regenerations. The phosphate removal mechanism involves electrostatic attraction, ligand exchange, and complexation. Moreover, the treatment of real wastewater is similar to the experimental results and also has a significant effect on the removal of other ions, which highlights the great potential of this method in mitigating phosphorus pollution.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2020
·Vol. 138
·期 5
·49781
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IF 2.52
Qi Li,Xiaojuan Tian,Ni Wu,Yun Li,Ting Pan,Bing Zhang,Yongli Duan,Shuyang Wang,Yongfeng Li
Graphene-based composite is promising as thermal interface material (TIM) due to its outstanding thermal properties. However, there are some bottlenecks to excellent performance, such as agglomeration of particles and undesirable voids between nanoplatelets. In this work, a composite with three-dimensional (3D) thermally conductive network has been assembled, which combines three kinds of nanofillers varying geometric dimensions. Thermal conductivity (TC) of composite with graphene nanoplatelets (GNPs) and carbon-nanotubes (CNTs) at a weight ratio of 3:1 is around 9% higher than that of GNP-based composite. By the introduction of carbon spheres (CSs), the TC is further increased by 28%. The enhanced thermal property further demonstrated by FLIR infrared camera is attributed to the formation of 3D heat conduction paths by GNPs, CNTs, and CSs, where the GNPs play the role of thermally conductive backbones. The other two components are introduced to attenuate the aggregation and strong thermal anisotropy. Moreover, the TC is confirmed nearly isotropic, which is different from most graphene-based TIMs because of the in-plane alignment. Our results indicate that the apparent synergy endows this 3D nanofiller great potential for heat dissipation applications requiring heat removal in two directions.
研究领域:
材料科学
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热管理技术
✓ 已验证
DOI
高影响因子
Journal of Cleaner Production
·
2020
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IF 7.246
Liangjun Xia,Sijie Zhou,Chunhua Zhang,Zhuan Fu,Aming Wang,Qian Zhang,Yunli Wang,Xin Liu,Xungai Wang,Weilin Xu
The increasing contamination of water from textile dyes is one of the major environmental problems facing humanity, which has stimulated extensive investigation of fabricating adsorbents with high removal efficiency and excellent adsorption capacity towards textile dyes. Nature has engineered some intriguing high-performance materials that may be excellent sustainable materials for water purification use. Herein, we report a novel Juncus effusus (JE)-based adsorbent with a three-dimensional network structure and interconnected channels for dye removal from wastewater. To further enhance its adsorption capacity towards textile dyes, the biodegradable chitosan (CS) was employed for the chemical modification of the JE fiber. The results showed that the CS–JE fibers exhibited a high adsorption capacity towards three types of anionic dyes at the temperature of 296 K: 526.3 mg g −1 for C.I. Acid Yellow 11 (AY11), 452.5 mg g −1 for C.I. Reactive Red 195 (RR195), and 255.1 mg g −1 for C.I. Direct Blue 15 (DB15), which outperforms most of the reported CS-modified adsorbents. The Langmuir model satisfactorily fitted the equilibrium adsorption curves of the CS–JE fibers. Throughout the kinetics studies , the adsorption fitted well with the pseudo-second-order model and exhibited a two-stage of intraparticle diffusion, indicating the adsorption of the investigated dyes onto the CS-JE fiber is rather complex that both the external surface adsorption and intraparticle diffusion occurred simultaneously. Finally, taking advantage of the specific 3D network structure and interconnect channels of the CS-JE fiber, a vertically oriented CS–JE cake was fabricated using CS–JE fibers for continuous filtration of dyes from wastewater. The cake exhibited high flow flux and rapid filtration performance under continuous flow without requiring additional pressure. The present work confirmed that the CS-JE composite can be a promising candidate for wastewater treatment .
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2023
·
IF 8.6
Qiang Wu,Junhao Zhou,Yixin Li,Lu Zhang,Xuan Wang,Xiaolong Lu
Electrospun nanofiber membranes (ENMs) have garnered significant attention among researchers for membrane distillation (MD) in treating high-salinity wastewater due to their high water flux and low mass transfer resistance. However, a significant challenge in using ENMs for MD is membrane wetting, which results from the deformation of their weakly randomly overlaid nanofibers structure due to water flow shear forces. Herein, we focused on the membrane's structure and successfully prepared superhydrophobic nanofiber membranes with 3D-network reinforced pore structure by immersing PVDF ENMs in a mixed solution of polydimethylsiloxane (PDMS) and titanium dioxide nanoparticles (TNPs) after a hot-pressing treatment for impregnation and coating. The resulting membrane exhibits exceptional properties, including a high water contact angle (WCA) of 160.3°, a high liquid entry pressure (LEP) of 1.57 bar, and sustained structural integrity with an unchanged pore size distribution even after 5 h of water scouring. These characteristics contribute to a water flux of 39.3 kg·m −2 ·h −1 and an unexpectedly long durability of up to 102 h, along with an outstanding salt rejection exceeding 99.99 %. Moreover, the membrane demonstrates stable water flux and resistance to wetting when processing a 3.5 wt% NaCl solution containing 0.1 mM sodium dodecyl sulfate (SDS), underscoring its significant potential for MD applications.
研究领域:
材料科学
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环境工程
✓ 已验证
产品关联
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2024
·
IF 3.2
Jincheng Zhu,Mengqing Ren,Ming Chen,Lili Wu
High thermally conductive polymer composites have garnered significant attention due to their exceptional performance, given the ever-decreasing size of electronic devices and the rise in power densities. Herein, a new three-dimensional (3D) thermal conductivity network structure has been successfully prepared using double fillers of nickel foam (NF) and modified silicon carbide particles (KSiC). The study compared the effect of different filler contents on the thermal conductivity of composites. Compared to conventional composites, those based on 3D filling networks have significantly improved thermal conductivity. The thermal conductivity of the NF/KSiC/PU composite containing 50 wt% KSiC was 1.18 Wm −1 K −1 , exceeding the cumulative thermal conductivity of the NF/PU and KSiC/PU 50 wt% composites, and 637.5% greater than that of neat PU. Meanwhile, the synthesized NF/KSiC/PU composite maintained a high electrical resistivity above 10 12 Ω·cm and good mechanical properties. This approach might offer novel solutions for developing high-quality packaging materials for advanced electronic devices with exceptional thermal and mechanical properties. Highlights Using SiC and NF Constructs a dual filler network. The dual filler thermal conductivity network can generate synergistic effects. Improving thermal conductivity compared to original polyurethane. Maintaining a high electrical resistivity and good mechanical properties.
研究领域:
材料科学
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电子工程
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Communications
·
2024
·
IF 3.7
Jie You,Yang Wang,Hongwei Wang,Jian Yang,Quan Li,Jian Gu
In this paper, a new process for preparing porous SiC foam with three-dimensional network structure is presented. A certain thickness of SiC coating is deposited on the surface of ultra-light carbon skeleton by CVD process, so as to achieve effective control of its structure and mechanical properties. The effects of CVD deposition time on the density, porosity and skeleton thickness rates of SiC foams were explored. By increasing the CVD deposition time, the structure of SiC foams can be effectively regulated, and the mechanical properties of SiC foams can be significantly improved. The porosity of the prepared SiC foam can be adjusted in a wide range (26.9%∼94.68%). When the density of SiC foam increases from 0.67 g/cm 3 to 2.36 g/cm 3 , its bending strength increases from 27.4 MPa to 136.9 MPa, which is significantly improved. After high temperature oxidation treatment (800–1200 °C), the mechanical properties of SiC foam will be further improved. However, when the oxidation temperature reaches 1400 °C, its mechanical properties will be reduced. This research provides a new idea for the preparation of high-performance porous SiC ceramics, and lays a foundation for its structural design, manufacture and application.
研究领域:
材料科学
·
陶瓷工程
✓ 已验证
产品关联
DOI
高影响因子
COMBUSTION SCIENCE AND TECHNOLOGY
·
2024
·
IF 1.7
Lianquan Suo,Zhilin Xi,Tong Xia,Tao Chen,Jiawei Han
A new type of biomass environmentally friendly hydrosol (DEP) was proposed to inhibit coal spontaneous combustion (CSC). The DEP consists of two parts, the PDopa side chain solution formed by the redox reaction of Dopa and EGCG and the main chain sol solution formed by the free radical polymerization of AA under the action of APS initiator. The −COOH, −NH2, and −OH in Dopa can be grafted onto the skeleton of the main chain via double strong hydrogen bonding interactions with the −COOH group in PAA to form a stable three-dimensional cross-linked network structure. DEP can inhibit CSC through three aspects: oxygen isolation, increasing the activation energy of coal oxidation, scavenging active groups and free radicals. The calculation simulation results show that EGCG in DEP can remove various active free radicals with lower activation energy at room temperature, breaking the chain cycle reaction of coal spontaneous combustion, which proves its high efficiency. This study provides a new way to apply mussel-inspired adhesion mechanisms to the prevention of CSC.
研究领域:
能源科学
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环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
Defence Technology
·
2023
·
IF 5.1
Xinli Ye,Hao Yu,Kai Zheng,Shan Li,Xiaomin Ma,Bangxiao Mao,Junxiong Zhang
The well-designed composite with satisfactory electromagnetic microwave absorption at high temperatures remains a serious challenge. Herein, we fabricated a resorcinol-formaldehyde/silica dioxide composite aerogel (RF/SiO 2 ) with a three-dimensional network structure using sol-gel, atmospheric pressure drying technique as well as heat-treated processes to achieve enhanced microwave absorption capabilities in the low frequency range. The pristine RF/SiO 2 aerogel presented a typical micropores structure with a surface area, porous volume, and density of 146.82 m 2 /g, 62.40%, and 0.28 cm 3 /g, respectively. Remarkably, the RF/SiO 2 aerogel showed an effective absorption bandwidth of 3.56 GHz and a minimum reflection loss value of −46.10 dB at 2.25 mm after being heat-treated at 1500 °C, while the maximum effective absorption bandwidth was 3.60 GHz at 2.30 mm. The intricate three-dimensional networks possessed remarkable impedance matching, multiple attenuation mechanisms, interfacial polarization, and dielectric loss, which were attributed to the exceptional ability to absorb electromagnetic microwaves. It offered a fresh approach to creating adaptable and effective microwave absorption materials in military defense.
研究领域:
材料科学
·
电磁学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Dejian Cheng,Yuqi Liu,Zenan Li,Taoying Rao,Dong Luo,Peitao Zheng,Chen Guo,Jun Wang,Fangfang Pan,Yonghong Deng,Hongbo Zeng,Chaoyang Wang
Although silicon (Si) anode has extremely high specific capacity, the damage to the electrode caused by the huge volume expansion greatly hinders its practical application in lithium-ion batteries. Aiming to alleviate this problem, a high-performance aqueous binder (AMNG) with gradient hydrogen bonding and flexible three-dimensional network structure is prepared by a one-pot method. Compared to the conventional linear polyacrylic acid (PAA) binder, the AMNG binder exhibits enhanced ionic conductivity and stress dissipation for Si nanoparticles, which is able to greatly reduce the side reactions caused by volume changes and considerably improve the electrochemical performance of Si anodes. As a result, the Si nanoparticles using the AMNG binder exhibit an initial discharge capacity as high as 3101 mAh g −1 with a Coulombic efficiency of 89.95%, and a capacity retention of 71.6% for 120 cycles, which are superior to the electrode using PAA, corresponding to 2832 mAh g −1 , 88.37% and 28.1%, respectively. More prominently, the practical application of the AMNG binder is evaluated in high-mass-loading Si-based electrodes and even in full cells with LiFePO 4 , all showing satisfied performance. Therefore, this design approach is valuable as a reference for the preparation of commercial aqueous binders.
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）