Journal of Materials Chemistry A
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2026
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IF 9.2
Shuai Li,Baoguo Lv,Haiming Lv,Xiao Liu,Lihong Wu,Lianwang Shan,Yongxin Qian,Daguang Li,Rui Wang,Guizhen Wang
The high-entropy concept has been widely recognized as a promising strategy for enhancing microwave absorption (MA) performance. However, systematic studies on how crystallinity affects the MA behavior of high-entropy materials remain scarce, limiting further performance optimization. In this context, nanoflower-structured high-entropy CoZnCdCuMn sulfide ceramics with different crystallinities were prepared via solvothermal synthesis and post-annealing, revealing a nonmonotonic crystallinity-dependent MA behavior. Among the samples, CoZnCdCuMnS-500 with intermediate crystallinity achieves an optimal balance between dielectric loss and impedance matching, delivering superior MA performance with a minimum reflection loss of −50.79 dB. Furthermore, CoZnCdCuMnS-500 was incorporated into a polymer matrix to fabricate a composite film, which exhibits rapid photothermal response and good cycling stability, highlighting its potential for electromagnetic protection in cold and complex environments. This work elucidates the critical role of crystallization state in governing the MA performance of high-entropy sulfides and provides new insights into the structural design and performance optimization of microwave absorbers.
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Materials
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2026
·Vol. 19
·期 5
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IF 3.7
Shangpeng Liu,Wenji Wang,Dadong Wang,Jian Lu,Yibo Li,Mingchen Lv,Min Sun,Zhen Fan
Heavy metal pollution remains a global environmental challenge, calling for sustainable and low-cost sorbents. Here, we upcycle coir fiber into a bioinspired adsorbent by depositing a polydopamine (PDA) coating (PDA/Coir fiber) for efficient Cu(II) and Cd(II) removal from water while improving effluent safety. Scanning electron microscopy (SEM), Fourier transform infrared (FTIR), X-ray photoelectron spectroscopy (XPS), and thermal gravimetric analysis (TGA) confirm successful PDA functionalization and associated structural changes. Compared with pristine coir fiber, PDA/Coir fiber shows 6.84-fold and 12.86-fold higher adsorption capacities for Cu(II) and Cd(II), respectively. Adsorption is well described by the Langmuir isotherm, indicating monolayer-dominated binding. Kinetic analysis shows that the adsorption of both ions follows the pseudo-second-order model. The fiber also exhibits good reusability over four adsorption–desorption cycles. Importantly, cytotoxicity assays of the treated solutions show substantially reduced biotoxicity after metal removal. Overall, PDA/Coir fiber offers a sustainable and low-cost platform for heavy metal removal by integrating efficient adsorption capabilities and safety implications.
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MICROPOROUS AND MESOPOROUS MATERIALS
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2026
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IF 4.5
Nguyen Quang Tu Le,Van-Hien Pham,Bich-Ngoc Duong,Duy-Khoi Nguyen,Thi-Phuong-Tu Nguyen,Thien-Hoang Ho,Ngoc-Quyen Tran,Van-Phuc Dinh
Highly crystalline ETS-10 zeolite was prepared with a surface area of 250 m 2 /g and an average pore size of 1.67 nm. • Adsorption was highly pH-dependent, reaching peak efficiency at pH 5.0 for Pb(II) and pH 6.0 for both Cu(II) and Cd(II). • The Sips model best described the adsorption without being limited by concentration. • The adsorption kinetic of Pb(II) follows the PSO model, whereas the ID model controls the removal of Cd(II) and Cu(II). • The removal of Pb, Cu, Cd occurred via stoichiometric Na+/K+ ion exchange within 12-membered rings and surface complexation. Understanding adsorption kinetics and mechanisms play an instrumental role to determine the speed, efficiency, and pathways by which adsorbents remove pollutants. In this study, kinetics and mechanisms of the adsorption of Pb(II), Cu(II) and Cd(II) onto ETS-10 are investigated based on the combination of experimental, theoretical models (Langmuir, Freundlich, Sips, Pseudo-First-Order (PFO), Pseudo-Second-Order (PSO), Intraparticle diffusion (ID)), and modern analytical techniques (XRD, SEM-EDX, FT-IR and BET-BJH). Obtained results show that Sips models give the best fit with experimental data for three ions, while kinetic of Pb(II) adsorption follows PSO and kinetics of Cu(II) and Cd(II) uptakes follow ID models. The adsorption rates of Pb(II) > Cd(II) > Cu(II) during the diffusion process on the surface, whereas the ones of Pb(II) > Cu(II) > Cd(II) in the intraparticle diffusion process. The mechanisms of intraparticle diffusion, ion-exchange and complexion play mainly roles in the removal of Pb(II), Cd(II) and Cu(II). Download: Download high-res image (302KB) Download: Download full-size image
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ENVIRONMENTAL POLLUTION
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2025
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IF 7.3
Yantian Ji,Duo Xu,Shuangyun Bai,Bowen Du,Hongyang Chen,Tiecheng Wang,Xianqiang Yin
Discharge plasma is gaining increasing attention in environmental science due to its advanced oxidative properties. While discharge plasma is capable of degrading most of the pollutants in contaminated water, it is not effective in degrading the accompanying microplastics (MPs). Notably, residual MPs in plasma-treated water may become carriers of other pollutants in the environment. The adsorption and co-transport behaviors of two MPs with Cd(II), before and after Dielectric Barrier Discharge (DBD) plasma treatment, were examined via batch and column experiments. The results showed that plasma-treated MPs exhibited significantly enhanced adsorption capacity for Cd(II), attributed to grafted polar functional groups on their surfaces. Density Functional Theory (DFT) calculations revealed that the enhancement resulted from reduced steric hindrance, along with stronger hydrogen bonding and van der Waals interactions. Co-transport experiments revealed that plasma treatment significantly promoted the carrier role of MPs in facilitating Cd(II) transport. Specifically, plasma-treated MPs mitigated Cd(II) deposition at the column base under favorable conditions for transport. Derjaguin–Landau–Verwey–Overbeek (DLVO) theory provided a satisfactory explanation for the observed transport behaviors of plasma-treated MPs and Cd(II). These findings highlight the potential environmental risks posed by plasma-treated MPs as carriers of Cd(II) and the need for further studies on their long-term ecological impacts.
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CHEMOSPHERE
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2023
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IF 8.8
Hanxin Wu,Xiaohan Jiang,Jianhao Tong,Jing Wang,Jiyan Shi
Nowadays, Lead (Pb) and Cadmium (Cd) contamination in rice is an important worldwide environmental concern. Fe 3 O 4 nanoparticles (Fe 3 O 4 NPs) and Nano hydroxyapatite (n-HAP) are promising materials to manage Pb and Cd contamination. This study systematically investigated the effect of Fe 3 O 4 NPs and n-HAP on Pb and Cd stressed rice seedlings’ growth, oxidative stress , Pb and Cd uptake and subcellular distribution in roots. Furthermore, we clarified the immobilization mechanism of Pb and Cd in the hydroponic system. Fe 3 O 4 NPs and n-HAP could reduce Pb and Cd uptake of rice mainly through decreasing Pb and Cd concentrations in culture solution and combining with Pb and Cd in root tissues. Pb and Cd were immobilized by Fe 3 O 4 NPs through complex sorption processes and by n-HAP through dissolution-precipitation and cation exchange, respectively. On the 7th day, 1000 mg/L Fe 3 O 4 NPs reduced the contents of Pb and Cd in shoots by 90.4% and 95.8%, in roots by 23.6% and 12.6%, 2000 mg/L n-HAP reduced the contents of Pb and Cd in shoots by 94.7% and 97.3%, in roots by 93.7% and 77.6%, respectively. Both NPs enhanced the growth of rice seedlings by alleviating oxidative stress and upregulating glutathione secretion and antioxidant enzymes activity . However, Cd uptake of rice was promoted at certain concentrations of NPs. The subcellular distribution of Pb and Cd in roots indicated that both NPs decreased the percentage of Pb and Cd in the cell wall, which was unfavorable for Pb and Cd immobilization in roots. Cautious choice was needed when using these NPs to manage rice Pb and Cd contamination.
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ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
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2023
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IF 6.8
Yirong Zhang,Zhenchao Tan,Kaikai Qin,Chenglan Liu
Pesticides and heavy metals commonly coexist in soil. In this study, the influence of Cd and Cu on the toxicity of rac -dinotefuran and the enantioselective behavior of dinotefuran enantiomers in soil-earthworm microcosms were investigated. The acute toxic tests showed that S -dinotefuran has higher toxic than that of R -dinotefuran. The rac -dinotefuran and Cd has an antagonistic effect on earthworms, and the Cu and rac -dinotefuran has a synergistic effect. Earthworms maybe promoted the enantioselective behavior of dinotefuran in soil. Co-exposure to Cd or Cu inhibited the dissipation of dinotefuran enantiomers ( S -dinotefuran and R -enantiomers), and slightly reduced the enantioselectivity in soil. The earthworms were found to be preferentially enriched with S -dinotefuran. However, Cd or Cu attenuated the accumulation of dinotefuran enantiomers in earthworms and decreased the enantioselectivity. The effect of Cd and Cu on the environmental behaviors of dinotefuran enantiomers were correlated positively with the dose of Cd/Cu. These results showed that Cd and Cu alter the environmental behaviors and the toxicity of dinotefuran enantiomers in soil-earthworm microcosms. Thus, the influence of coexistent heavy metals on the ecological risk assessment of chiral pesticides should be considered.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2023
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IF 5.2
Xianping Deng,Peiwen Wu,Xiaodong Du,Guining Lu,Yanyan Gong,Zhi Dang,Dongye Zhao
Combined heavy metals and chlorinated organic compounds have been widely reported in industrial wastewater. Yet, simultaneous removal of these contaminants remains challenging. In this study, a bi-functional composite (TNTs@AC) was prepared based on commercial titanium dioxide (TiO 2 ) and activated carbon (AC) and tested for simultaneous removal of Cd(II) and 2-chlorophenol (2-CP). Under the action of high temperature and pressure, TiO 2 was transformed into titanate nanotubes (TNTs) and bound to AC, and in the meanwhile, nanoscale AC particles were patched on the TNTs. In the mixed TNTs and AC phases, TNTs was responsible for taking up Cd(II), whereas AC for 2-CP. As such, the relative adsorption capacities of the composite for Cd(II) and 2-CP varied with the mass ratio of TiO 2 :AC, with decent uptakes for both chemicals in the mass ratio rage of 1:3 ∼1:1. TNTs@AC (prepared at TiO 2 :AC = 1:1) demonstrated fast sorption kinetics and high sorption capacities for both Cd(II) and 2-CP, with a maximum Langmuir adsorption capacity of 109 and 52 mg/g, respectively, in the single solute systems. In the binary systems, the adsorption capacity of Cd(II) was not affected by the presence of 2-CP, whereas the presence of Cd(II) slightly increased the uptake of 2-CP in the low Cd concentration domain (final Cd < 7 mg/L) but mildly inhibited the uptake at Cd > 7 mg/L. The dominant adsorption mechanism of Cd(II) was ion exchange between Cd(II) and Na + /H + of the -ONa/H group of TNTs; while AC served as the primary sink for 2-CP via hydrophobic interaction along with some other possible mechanisms such as surface complexation and hole filling. TNTs@AC also performed well under common environmental conditions (pH, common co-ions, and dissolved organic matter). The formation of mixed TNTs and AC microphases appears promising for simultaneous removal of heavy metals and organic compounds from contaminated water.
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JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
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2022
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IF 6.364
Zexuan Sui,Yan Sun,Yue Jing,Ci Wang,Yao Zhu,Sen Qian,Jing Ren,Jianzhong Zhang
We report the first study on in-situ co-growth of biphasic CsPbBr 3 and Zn-Cd-S quantum dots (QDs) in borosilicate glass , and provide explicitly evidence of their morphology and nanoscale distribution. Such biphasic QDs co-doped nano-glass composites show unique green and red dual-band emissions. By changing the thermal heating scheme, the fluorescence intensity ratio (FIR) and thus the apparent color can be widely adjusted. The FIR can be also fine-tuned simply by varying the excitation wavelength. Based on the FIR, a self-calibrated X-rays dosimeter is constructed, which also possesses a good thermal stability. Although the X-rays induced scintillation weakening occurs, it can be readily recovered by post-thermal-annealing.
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JOURNAL OF HAZARDOUS MATERIALS
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2023
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IF 13.6
Haoran Tian,Shuchuan Peng,Lu Zhao,Yihan Chen,Kangping Cui
Biochar-supported zero-valent iron nanocomposites have received much attention due to their application potential in environmental pollution remediation. However, in many occasions, zero-valent iron loading improves the electron transfer efficiency and catalytic oxidation capacity of biochar while blocking the original pore structure of biochar, limiting its application potential. In this study, a zero-valent iron composites with large SSA (865.86 m 2 /g) was prepared in one step using pre-pyrolysis of biochar powder and K 2 FeO 4 grinding for co-pyrolysis. The processes of ZVI generation and SSA expansion during the pyrolysis were investigated. The factors affecting the removal process of Cd and OTC in water by the composites were investigated. The mechanisms of Cd fixation and OTC degradation by the composites were explored by experiments, characterization, and DFT calculations. The OTC degradation pathway was proposed by theoretical predication and LC-MS spectrometry . The results indicate that ion exchange, complexation with oxygen-containing functional groups, electrostatic attraction, and interaction with π-electrons are the main mechanisms of Cd immobilization. The degradation pathways of OTC mainly include dehydroxylation , deamination and dealkylation.
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International Journal of Electrochemical Science
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2023
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IF 1.5
Chun Feng,Lijuan Zhu,Yaqiong Cao,Yin Di,Zongxue Yu,Guhui Gao
This study reports a new strategy for enhancing the anti-corrosion properties of epoxy coatings. For this purpose, beta-cyclodextrin-graphene oxide (β-CD-g-GO) nanosheets were synthesized via anchoring beta-cyclodextrin on a graphene oxide surface in the presence of 3-glycidoxypropyltrimethoxysilane (KH560). The structure of the material was characterized by SEM, EDX, XRD, FT-IR and TGA. The inclusion of 2 wt. % GO and β-CD-g-GO nanosheets in epoxy resin remarkably enhanced the corrosion protection performance of the material relative to that of pure epoxy coating. Electrochemical impedance spectroscopy (EIS) measurements revealed that the impedance of the epoxy coating was improved after the addition of 2 wt. % GO and β-CD-g-GO nanosheets. The most pronounced improvement in the properties of the epoxy coating was obtained using β-CD-g-GO nanosheets. Scratches tests confirmed the reduced steel substrate corrosion in the case of epoxy coating that included β-CD-g-GO nanosheets compared to the corrosion obtained for other samples.
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Arabian Journal of Chemistry
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2022
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IF 6.212
Jiacheng Li,Lisha Liao,Yannan Jia,Tian Tian,Shiwei Gao,Chenyue Zhang,Wei Shen,Zheng Wang
In this study, the preparation of magnetic Fe 3 O 4 /ZIF-8 (MFZ) and its adsorption properties for Cd(II) from water were investigated. Various characterizations demonstrate that the as-prepared MFZ has well magnetic-separation performance and thermal stability. In batch adsorption tests, the effects of pH, initial concentration, and adsorbent dosage were evaluated. According to the findings, when the pH is 7 and the dosage is 150 mg/L, the adsorption capacity for a 40 mg/L Cd(II) solution reaches 102.3 mg/g in 180 min. The Cd(II) adsorption processes was found to correspond to pseudo-first-order kinetics and Langmuir model according to the adsorption kinetics and isotherms. The Langmuir model predicted a maximal saturation adsorption capacity of 160.26 mg/g at 298 K. Thermodynamic analysis revealed that the Cd(II) adsorption is an endothermic, spontaneous process. Ion exchange, coordination reaction, and electrostatic interaction are all involved in Cd(II) adsorption by MFZ. The optimum conditions for Cd(II) adsorption were proposed and confirmed in accordance with the results of the response surface optimization experiments. Furthermore, regeneration tests demonstrate the great repeated regeneration ability of MFZ. According to the anticipated production cost, treating wastewater with a Cd(II) concentration of 40 mg/L would cost roughly US$ 8.35/m 3 . MFZ showed good potential for Cd(II) removal from water.
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BIOCHEMICAL ENGINEERING JOURNAL
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2022
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IF 4.446
Lihui Jiang,Yuheng Han,Juan Xu,Ting Wang
A cellulose-based hydrogel with synergistic therapeutic effect was prepared by a one-pot method. The hydrogel had hydroxyethyl cellulose (HEC) as a framework and epichlorohydrin (EPI) as a cross-linking agent. Cationic-β-cyclodextrin (C-β-CD) was homogeneously embedded in the grid of the cross-linked structure. Zinc oxide nanoparticles (ZnO NPs) and menthol were used to provide analgesic and bactericidal effects . Menthol was uniformly loaded onto the hydrogel matrix by the addition of C-β-CD and increased the solubility of menthol in water. ZnO NPs were synthesized by in situ hydrothermal treatment . The positively charged group of C-β-CD and the active hydroxyl group of HEC were used to distribute the ZnO NPs uniformly on the hydrogel matrix without significant agglomeration. The hydrogel had a smoothly ordered and compact morphology. It exhibited adequate mechanical, swelling, water retention and oxygen permeability properties in tests. In addition, the hydrogel had an efficient bactericidal effect. Release experiments showed that the encapsulation of menthol by C-β-CD allowed for a slow release of menthol. Biocompatibility tests had shown that the hydrogel was non-toxic to normal human cells.
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