ACS Applied Polymer Materials
·
2020
·
IF 0
Lu Wu,Longwei Li,Meijie Qu,Hai Wang,Yuezhen Bin
Hydrogel has great application prospect in the field of flexible wearable devices; however, its poor antifreezing and antidrying properties hinder its applications in wearable devices. Herein, a self-adhesive glycerol-hydrogel (G-hydrogel) with antifreezing and antidrying properties was prepared successfully. The glycerol and water double-solvent system endowed excellent antifreezing and antidrying properties with hydrogel, which ensured the flexibility of the G-hydrogel even after being frozen for 24 h at −15 °C or stored at room temperature for a long time. Polydopamine (PDA)-intercalated bentonite (BT) incorporated into the G-hydrogel contributed good comprehensive mechanical property to the G-hydrogel. The peeling test results confirmed that G-hydrogel has good adhesion to natural and synthetic materials because of the existence of PDA with catechol structure. Particularly, the G-hydrogel presented marvelous sensing capabilities for strain and pressure and could monitor the movements of a human. In summary, this kind of self-adhesive, antidrying, and antifreezing hybrid G-hydrogel may be a very promising soft material for flexible wearable devices.
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COMPOSITES PART B-ENGINEERING
·
2026
·
IF 14
Xianglong Tang,Kun Liu,Danling Meng,Kangle Cheng,Ya Hu,Xinyv Xu,Hanbing Zhang,Zhangfa Tong
Cellulose aerogel-based composite phase change materials (CPCMs) offer a promising pathway to achieve solar-driven thermoelectric conversion, yet their performance is often hindered by intrinsic limitations in thermal conductivity, crystallization kinetics, and form-stability. Herein, we report an interfacially self-assembled bacterial cellulose (BC)/TiN/V 2 C aerogel designed to encapsulate a bentonite (BT)/polyethylene glycol (PEG) mixture (BTV-BP). The synergistic effect of heterogeneous nucleation sites provided by hydrogen bonding interactions and nanoscale confinement within the BT layers significantly reduces the nucleation energy barrier for PEG, thus increasing the crystallization rate by at least 100%. Besides, a unique fish-scale patterned structure and microencapsulated aggregates formed by BT/PEG intercalation collaboratively reduce the PEG leakage rate to only 1.81%. Additionally, thanks to the gradient size coupling distribution of V 2 C and TiN over the aerogel, the photothermal conversion efficiency of BTV-BP reaches 92.8%, and the thermal conductivity enhancement rate is up to 433%. Notably, the advanced applications in solar-thermoelectric generation of BTV-BP exhibit a stable power of 3 mW under 1.5-sun irradiation, which can sustain long-term operation of an LED panel even in darkness, along with excellent self-cleaning performance. This work provides new insight into utilizing cost-effective clay minerals to construct efficient and stable solar-driven aerogel-based CPCMs.
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高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Tao Wu,Xuewen Gao,Jiaxing Feng,Yuan Jin,Zhengye Feng
Accurate predictions of the distribution coefficient ( K d ) and effective diffusion coefficient ( D e ) of radionuclides in bentonite barriers is critical for the safety evaluation of high-level radioactive waste repositories. Clay properties have a crucial impact on both parameters. However, existing models do not adequately capture the complex physicochemical characteristics of clay minerals, thereby limiting their prediction accuracy. This study developed, a variational autoencoder-multi-task deep learning (VAE-MTDL) framework to improve the predictive accuracy for K d and D e by integrating radionuclide diffusion data with X-ray fluorescence (XRF), X-ray diffraction (XRD), and cation exchange capacity (CEC) data. The model was trained using a dataset comprising 1159 experimental instances and 49 input features. It achieved high predictive accuracy (R 2 = 0.96 for Kd and 0.93 for D e ). Shapley additive explanations (SHAP) analysis identified total porosity as the most influential predictor, while XRF and XRD data significantly contributed to the predictions. Experimental validation using through-diffusion tests for HCrO 4 − (as a surrogate for monovalent anionic radionuclide species) and metal-EDTA complexes (including Eu(III), Sm(III), Ce(III), and Co(II) as a surrogate for di- and trivalent cationic radionuclide species) in compacted bentonite-sand mixtures confirmed robust generalization, with predicted-to-experimental ratios ranging from 1/5 to 5 for K d , and from 1/3 to 3 for D e . The enhanced accuracies in K d and D e predictions have practical relevance in advancing the safety evaluation of repositories.
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高影响因子
CARBOHYDRATE POLYMERS
·
2024
·
IF 10.7
Xinyan Yan,Xiangyu Lin,Hailang Liu,Jie Lu,Hongxiao Wang,Xujuan Huang,He Liu,Xu Xu
Solid-state zinc-ion hybrid supercapacitors (ZHSCs) featuring hydrogel electrolytes have become ideal for large-scale flexible energy storage. However, existing polyacrylic acid (PAA) hydrogel electrolytes often lack the combined traits of ionic conductivity, mechanical robustness, and temperature tolerance. Herein, a versatile PAA-based hydrogel electrolyte (ACBH-Zn) containing a ZnCl 2 -cellulose solution and bentonite (BT) is delivered, facilitated by cooperative coordination bonds and hydrogen bonds. The coordination bonds between Zn 2+ and −COOH of PAA, in conjunction with cellulose and BT, alongside the abundant hydrogen bonds within cellulose and PAA, are conducive to upgrading mechanical strength and ionic conductivity, while the BT's lamellar structure further provides sufficient ion migration channels. Consequently, the ACBH-Zn showcases exceptional mechanical properties, satisfying ionic conductivity (88.9 mS cm −1 ), and excellent temperature tolerance at −60 °C (30.3 mS cm −1 ). The ACBH-ZHSC, when assembled, attains a remarkable maximum energy density (323.4 Wh kg −1 ), maintaining an impressive capacity retention rate (92 %) even after undergoing 10,000 cycles at 10.0 A g −1 . Furthermore, the assembled self-powered triboelectric wearable electronic device effectively converts mechanical energy from human movement into electrical energy, enabling efficient storage and utilization, and offering promising insights into the application of flexible wearable devices.
研究领域:
材料科学
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能源存储
·
柔性电子
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PubMed
高影响因子
ENVIRONMENTAL RESEARCH
·
2024
·
IF 7.7
Xuran Du,Litao Wang,Hong Liang,Guanyu Chen,Jing Wu,Wenjie Xia,Dawen Gao
Bentonite is a non-metallic mineral with montmorillonite as the main component. It is an environmentally friendly mineral material with large reserves, wide distribution, and low price. Bentonite can be easily modified organically using the surfactant saponin to obtain saponin-modified bentonite (Sap-BT). This study investigates the immobilization of crude enzymes obtained from Trametes versicolor by physical adsorption with Sap-BT. Thus, saponin-modified bentonite immobilized crude enzymes (CE-Sap-BT) were developed to remove benzo[a]pyrene. Immobilization improves the stability of free enzymes. CE-Sap-BT can maintain more than 80% of activity at 45 °C and after storage for 15 d. Additionally, CE-Sap-BT exhibited a high removal rate of benzo[a]pyrene in soil, with 65.69% after 7 d in highly contaminated allotment soil and 52.90% after 6 d in actual soil contaminated with a low concentration of benzo[a]pyrene at a very low laccase dosage (0.1 U/3 g soil). The high catalytic and removal performance of CE-Sap-BT in contaminated sites showed more excellent practical application value.
研究领域:
环境科学
·
生物技术
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PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2017
·Vol. 52
·期 11
·6362-6375
·
IF 2.599
Yang Lili,Jiang Guancheng,Shi Yawei,Lin Xin,Yang Xiao
Bentonite/water-based drilling fluids (BT-WDFs) suffer serious fluid loss particularly at high temperatures, pressure levels, and divalent cation concentrations. The ionic liquid 1-vinyl-3-ethylimidazolium bromide was introduced to synthesize a filtration control additive (PASV) through free radical copolymerization with acrylamide and 2-acrylamido-2-methylpropanesulfonic acid. The effect of the concentration of the ionic liquid on the filtration property of the fluids was determined at high Ca 2+ concentrations and temperatures. BT-WDFs added with 3.0 wt% copolymer exhibited excellent performance for controlling bivalent Ca 2+ -resistant fluid loss and tolerated the influence of Ca 2+ up to 70 wt%, which approaches the saturation at room temperature (25 °C). As the PASV concentration increased to more than 1.0 wt%, the fluid loss volume was less than 10 mL at room temperature, thereby ensuring safe drilling operation. When the formations drilled were at high temperatures, the filtration control performance was obtained by adding PASV additives. The requisite concentration of PASV varied from 1.5 to 3.0% at 80–150 °C. An extremely dense filter cake was produced because of the elimination of the influence of Ca 2+ on bentonite and the stabilization of the bentonite dispersion state by the PASV copolymer. These effects improved the filtration control performance of BT-WDFs. Moreover, the fluids exhibited shear thinning behavior over the shear rate range of 0.1–1000 s −1 , resulting in improved practical drilling process. This study provides a basis for applying ionic liquids in the design of additives for drilling fluids.
研究领域:
材料科学
·
石油工程
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高影响因子
Materials Today Communications
·
2022
·
IF 3.662
Shaocan Dong,Weiqiu Huang,Xufei Li,Xinya Wang,Baoyou Yan,Zhen Zhang,Jing Zhong
In response to global climate change, most countries have set carbon reduction targets. Mixed matrix membranes (MMMs), which combine the characteristics of inorganic nanofillers and organic matrices, have received wide attentions because of their good permeability and selective performance for the separation of CO 2 from industrial waste gases. However, the poor dispersion, compatibility and interfacial defects often lead to poor gas separation performance. In this paper, according to the dissolution-diffusion and Lewis acid-base theories, inorganic filler of amino-functionalized Bentonite (APTES-Bentonite) with -NH 2 was firstly synthesized to improve the affinity of CO 2 . Then, the dual-functionalized MMMs of APTES-Bentonite/PVDF (A-B/P MMMs) was prepared and adopted for the separation of CO 2 /CH 4 and CO 2 /N 2 , showing the increase of 87.76% and 75.31% compared to the pristine PVDF membrane, respectively. These excellent performances were attributed to the synergistic effect of APTES-Bentonite with -NH 2 groups and PVDF with -F groups, which provide a dual-functional transport pathway for CO 2 molecules due to the interactions of host-guest. Overall, the customized A-B/P MMMs offer superior CO 2 separation performance, which provides some valuable references for large-scale CO 2 capture studies.
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高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
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2021
·Vol. 328
·期 2
·717-725
·
IF 1.371
Kong Jie,Lee Chuan-Pin,Sun Yuzhen,Hua Rong,Liu Weigang,Wang Zhifen,Li Yang,Wang Yudan
Quantitative calculation based on the joint action of anion exclusion and sorption has not been reported. This article studies the diffusion behavior of Se(IV) in MX-80 bentonite fills in different lengths by the through-diffusion method. The anion exclusion and sorption are simultaneously considered and quantitatively calculated. The results show that the effective diffusion coefficient of Se(IV) decreases with the increasing lengths of bentonite plug, because of the joint action of anion exclusion and sorption. On this basis, the anion exclusion and sorption are first quantitatively calculated, then a new theory for calculation is proposed in this article. The calculation results show that the ratio of anion exclusion and sorption. In groundwaterenvironments and seawaterenvironments, the weight of sorption is lower than anion exclusion in diffusion process.
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2017
·Vol. 41
·期 9
·3352-3357
·
IF 3.269
Wenjuan Guo,Na Sun,Yankai Du,Luyan Wang,Meishan Pei
A poly(glycidyl methacrylate) (PGMA) grafted bentonite (Bent) was prepared by surface-initiated atom transfer radical polymerization (SI-ATRP), followed by modification with tetraethylenepentamine (TEPA) through a ring-opening reaction of the epoxy groups in PGMA to form polyamine grafted bentonite (Bent–PGMA–TEPA). The as-prepared novel material was characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and thermal gravimetric analysis (TGA). The ability of Bent–PGMA–TEPA to adsorb Orange I (OI), a negatively charged dye, was tested. The effects of pH, initial concentration, contact time and temperature were investigated. The equilibrium adsorption isotherm and adsorption kinetics fitted well with the Langmuir model and the pseudo-second-order kinetic model respectively.
研究领域:
材料科学
·
环境科学
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高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2014
·
IF 5.03
Changzhong Chen,Xiaodi Liu,Wenmin Liu,Mengfei Ma
In this work, the influence of type of supporting materials on the performance of form stable phase change materials (FSPCMs) was investigated. Two kinds of FSPCMs containing myristic acid (MA) were prepared using an inorganic material (bentonite) and a polymer (Eudragit L100) individually as the supporting material. The morphology, composition, crystalline properties, phase transition properties and heat storage/release performances of MA/bentonite FSPCMs (abbreviated as FSPCM-B) and MA/Eudragit L100 FSPCMs (abbreviated as FSPCM-E) were researched comparatively. The results show that the maximum MA content of FSPCM-B and FSPCM-E without melt MA leakage is 50 wt% and 70 wt%, respectively. All the prepared FSPCMs have good thermal reliability and reusability , and phase transition enthalpies of FSPCM-B are obviously lower than those of FSPCM-E with the same MA mass fraction. Due to the high thermal conductivity of bentonite, the heat transfer rate of FSPCM-B is exactly higher than that of FSPCM-E. This study will provide insights into the design and application of FSPCMs with inorganic matrix and polymeric matrix .
研究领域:
材料科学
·
储能技术
·
热工工程
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高影响因子
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2018
·
IF 3.441
Bing-huang Wang,Qian Zhang,Jun-ming Hong,Ling Li
Novel iron–carbon–bentonite–alginate beads (Fe°/C-BABs) were successfully prepared with the ion-gelation method and demonstrated high activities in persulfate activation for benzalkonium chloride (BAC) oxidation. The beads were measured in terms of size, mass, and Fe content and then characterized via scanning electron microscopy, energy dispersive spectrometry, Fourier transform infrared spectroscopy, and thermogravimetric analysis. The performance of Fe°/C-BABs as filler was evaluated in a continuous fixed-bed with paralleled PS and BAC feeding. The effects of initial PS (100 mM) concentration, pH (3–11), fixed bead weight (10–30 g), and flow rate (225-540 mL h −1 ) were investigated. Results indicated that the Fe°/C-BABs effectively activated PS to treat BAC in the solution. The optimal conditions for the degradation of BAC were pH 7.0, [BAC] = 50 mg L −1 , [PS] = 100 mM, bead weight = 30 g, PS flow rate = 25 mL h −1 , and BAC flow rate = 225 mL h −1 ; the removal rate of BAC reached 93.3%.The economic cost analysis was carried out under the optimal experimental conditions. To deeply understand the degradation mechanism of pollutants, the intermediates of BAC degradation were analyzed via gas chromatography/mass spectrometry analysis, and a degradation path pathway was proposed.
研究领域:
环境科学
·
化学工程
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高影响因子
Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Lijuan Ma,Pengkang Zhang,Tao Pan,Tao Zhao,Bangguo Liu,Xiurong Chen
To effectively control the escape of odorous chemicals like trichloroethylene (TCE) in soil remediation sites, a novel technology for iron-loaded bentonite activated urea peroxide (FBT/UHP) was developed in this study. This was significantly higher than the 51.40% removal in the untreated bentonite and UHP (BT/UHP) system. The stability test revealed that FBT remained stable after five uses. The hydroxyl radical was primarily responsible for the degradation process, accounting for almost 82.74% of total TCE removal. Intermediate identification and theoretical calculations further analyzed the possible degradation pathways of TCE. Intermediate identification combined with theoretical calculation further analyzed the potential degradation pathways of TCE. According to experimental results, the FBT/UHP system decreased the TCE cumulative relative escape rate by almost 91.90%. In summary, the FBT/UHP system shows promising potential for controlling TCE and other odour leakages during soil remediation at pesticide sites.
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高影响因子
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