iScience
·
2021
·
IF 5.458
Dejun Zeng,Liyong Yuan,Pengcheng Zhang,Lin Wang,Zijie Li,Youqun Wang,Yunhai Liu,Weiqun Shi
HKUST-1@CMC (HK@CMC) composites that show good acid and alkali resistance and radiation resistance were successfully synthesized by introducing carboxymethyl cellulose (CMC) onto the surface of HKUST-1 using a foaming strategy. For the first time, the composites were explored as efficient adsorbents for U(VI) trapping from aqueous solution, with encouraging results of large adsorption capacity, fast adsorption kinetics, and desirable selectivity toward U(VI) over a series of competing ions. More importantly, a hybrid derivative film was successfully prepared for the dynamic adsorption of U(VI). The results show that ∼90% U(VI) can be removed when 45 mg L −1 U(VI) was passed through the film one time, and the removal percentage is still more than 80% even after four adsorption-desorption cycles, ranking one of the most practical U(VI) scavengers. This work offers new clues for application of the Metal-organic-framework-based materials in the separation of radionuclides from wastewater.
研究领域:
材料科学
·
环境科学
·
核化学
✓ 已验证
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Chen Yang,Hua-Rong Yang,Qing-Da An,Zuo-Yi Xiao,Shang-Ru Zhai
A novel CMC/PVA/MIL-101(Cr) aerogel bead (CPMB) was prepared by the green polymer matrix of CMC and PVA and nanofiller of MIL-101(Cr) through the simple complexing with the ionic crosslinking agent, which could be an adsorptive platform for effectively capturing of Co(II) and Ni(II) ions in wastewater. The morphology, surface chemistry, and textural characteristics were investigated by varied characterization methods to reveal behind mechanisms for the dissimilarity in adsorption performance. The optimal modifying dosage of MIL-101(Cr) nanoparticles was determined to form an optimal tailored network with abundant MIL-101 clusters and hydroxyl/carboxyl groups inside the network that greatly achieved the most accessible heavy metals to CPMB-1. Meanwhile, the influences of temperature, adsorption dosage, pH, and interfering cations on the capacity of CPMB-1 were investigated, while adsorption behaviors of adsorbents were also explored. Analytic results indicated that the capture of two targeted ions by CPMB-1 could favorably comply with the Pseudo-second-order kinetic model and Freundlich isothermal adsorption model. The maximum adsorption capacities of two targeted ions calculated by data were 180.3 mg/g and 261.9 mg/g, respectively. According to the results of XPS and FTIR analysis, the electrostatic attraction and chelating effect could be the main mechanisms for improved performance, and contributing groups were the hydroxyl and carboxylic acid introduced into CPMB-1. Moreover, the as-designed CPMB-1 exhibited excellent recyclability and stability in eight cycles. The encouraging results exhibited by CPMB-1 might bring a new idea for integrating multiple functionalities of MOFs and biomass components for designing functional composites for efficient remediations of wastewater.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2021
·
IF 10.588
Siyu He,Wanrong Hu,Yali Liu,Yi Xie,Hui Zhou,Xuqian Wang,Jing Chen,Yongkui Zhang
Uranium in groundwater during uranium mining activities urgently needs to be remediated through effective and environmental-friendly approaches. The reduction and immobilization of soluble U(VI) using biogenic carboxymethyl cellulose modified iron sulfide complex (biogenic CMC-FeS complex) is one of the emerging and innovative methods. However, its removal mechanism is largely unknown. Here, biogenic CMC-FeS complex with extracellular polymeric substances (EPS) and CMC was successfully synthesized by sulfate-reducing bacteria (SRB) and showed highly dispersible capacity. The tryptophan and tyrosine, which were the main components in EPS produced by SRB on CMC-FeS surface, significantly increased the U(VI) removal capacity of the biogenic CMC-FeS complex compared with chemically synthesized CMC-FeS. U(VI) removal was attributed to the adsorption of soluble U(VI) by ≡ FeO + , CMC, tryptophan, and tyrosine on the biogenic CMC-FeS complex, following its reduction by S 2- , S 2 2- and Fe 2+ . Moreover, biogenic CMC-FeS complex with CMC-to-FeS molar ratio of 0.0005 performed well in the presence of bicarbonate (5 mM), humic acid (10 mg/L), or co-existing cations such as Pb 2+ , Ni 2+ , Cd 2+ , Mn 2+, and Cu 2+ (200 ug/L) at pH 7.0, and displayed relatively high oxidation resistance and stability ability. This work provides an in-depth understanding of the biogenic CMC-FeS complex for the U(VI) removal and contributes to the development of cost-effective U(VI) remediation technologies .
研究领域:
环境科学
·
微生物学
✓ 已验证
DOI
PubMed
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Huabin Guo,Shengwen Zhong,Liping Chen,Guanghuai Peng,Fang Fang Wang,TingTing Yan,Jingwei Hu
The PVDF-HFP/PMMA/CMC blended solid polymer prepared by solvent volatilization method with PVDF-HFP as host polymer matrix and PVDF-HFP/PMMA as blended membrane and then PVDF-HFP/PMMA modified by coating carboxymethyl cellulose (CMC) was introduced in this study to overcome the shortcomings of organic solvent - based liquid electrolyte in lithium-ion batteries. The synthesized copolymers were characterized by FTIR, TGA, XRD, and the results show that PMMA can be well dispersed in PVDF-HFP solution and the addition of CMC can reduce the crystallinity of the polymer membrane, which accelerates the movement of the polymer chain segments and improves the migration rate of lithium-ions. The electrical conductivity of the gel polymer was investigated by AC impedance, and the room temperature ionic conductivity of the gel polymer was up to the order of 10 -3 S·cm -1 , and the electrochemical stability window was 4.8 V. The polymer lithium-ion battery assembled with LiCoO 2 as cathode and lithium sheet as anode has good cycle stability. The lithium metal polymer cell delivered discharge specific capacity with 162.52 mAh.g -1 at the first cycle, and these properties indicate that the modified gel polymer has applicative prospect in polymer lithium-ion batteries.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Youchuan Ma,Jinfeng Bi,Zhonghua Wu,Jianyong Yi
Saccharides are the dominant factor shaping the texture of freeze-dried products. This study investigated the impact of various molecular-weight saccharides at different concentrations on the physical properties and intermolecular interactions of pectin-CMC cryogels by experiment and molecular dynamic (MD) simulations. Results showed that the increased shrinkage of cryogels and enhanced molecular interactions between saccharides and pectin-CMC were mechanisms that enhanced the hardness of cryogels. Notably, the cryogel with fructose exhibited significantly higher hardness compared to cryogels with other saccharides. The cryogel containing 16 % fructose had the lowest glass transition temperature ( T g ), leading to the highest shrinkage (70 %). Moreover, the MD results revealed that fructose had the highest intermolecular interaction energy (coulombic short range) with pectin-CMC (−5316.78 kJ/mol). This study revealed that the intermolecular interactions between the added saccharide and the pectin-CMC, in addition to the density of the cryogel, are critical determinants of the hardness and crispness of cryogels.
研究领域:
食品科学
·
生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Polymers
·
2022
·Vol. 14
·期 17
·3578
·
IF 4.967
Jiawen Chen,Jun Ye,Mingming Zhang,Jian Xiong
The residual acrylamide in food paper packaging can be transferred into water and food, which will cause harmful effects on human beings. In this paper, a rapid and easily available fluorescent probe based on carboxymethyl cellulose (CMC)/Eu (Ⅲ) nanocomposites was designed to detect the residue acrylamide with high sensibility. The probe could respond in 1 min. The concentration of acrylamide was linearly correlated to the fluorescence intensity of the probe at the emission wavelength of 615 nm in the concentration range of 0.1–100 μmol/L. The limit of detection (LOD) of the probe was 0.085 μg/L, which is lower than the guideline value of the European Union, the U.S. EPA, and the WHO. An experiment was performed to simulate the acrylamide migrating from food-contacting paper materials to different foods, including waterborne food, alcohol beverage, acidic food, and greasy food. The recoveries and RSDs of acrylamide in all samples indicated that the CMC/Eu (Ⅲ) fluorescent probe was efficient for acrylamide detection. The possible mechanism of the probe for acrylamide detection involved both dynamically quenching and static quenching by forming of non-fluorescent substances.Keywords:CMC/Eu (Ⅲ);fluorescence probe;acrylamide;food contacting material
研究领域:
分析化学
·
食品科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
LANGMUIR
·
2022
·
IF 4.331
Lan Ma,Yan Wan,Teng Wang,Yaling Liu,Ying Yin,Liyun Zhang
Developing the high-anti-fouling membrane has kept continuous attention in oil/water emulsion treatment. However, the majority of works on anti-fouling membranes mainly focused on low-viscosity oils, which greatly limited the development and application of a membrane to face the real crude oil wastewater. Inspired by the hydrophilicity of sodium carboxymethyl cellulose (CMC) and zirconium base metal–organic frame (Zr-MOF), an anti-oil-fouling CMC/UiO-66-NH2 composite membrane was constructed by a self-assembly method. Profiting from the hydrophilicity and micro-nanostructure of the CMC/UiO-66-NH2 layer, the obtained CMC/UiO-66-NH2 membranes displayed underwater superoleophobicity and desired oil resistance. It could display the effective separation capability with 1282 ± 62 to 6160 ± 81 L/(m2·h·bar) and above 99.08% toward the different light oil emulsions. More importantly, the CMC/UiO-66-NH2 membrane displayed ultralow crude oil adhesion behaviors toward the crude oil emulsions, which could achieve a considerably high flux (746 ± 60 to 5224 ± 87 L/(m2·h·bar)). Furthermore, electrostatic interaction and physical enwinding–wrapping between CMC and UiO-66-NH2 also endowed the composite membranes with outstanding stability. After immersing the as-prepared membranes into the harsh environments for 24 h, the membranes still maintained high underwater–oil contact angles (UWOCA > 155°) and separation ability (oil rejection was above 99.0%). Therefore, CMC/UiO-66-NH2 composite membranes could demonstrate promising prospects in real oily emulsion treatment.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Mingming Chen,Qinghua Gu,Huiping Shao,Haihong Liu,Jingde Luan,Zheng Yan,Wengang Liu,Xin Ke
In this study, the PPY/CMC aerogels showed rapid removal of norfloxacin (NOR) within 2 h with a maximum adsorption capacity of 845.7 mg/g and excellent adsorption performance in the pH range of 3–10. The exhaustive Density Functional Theory (DFT) calculations revealed that π-π electron-donor–acceptor (EDA) interactions dominated at different pH. Humic acid (HA) mainly competed with NOR for the sites of π-π EDA interactions on the adsorbent, but only slightly inhibited NOR adsorption at high concentrations due to the weak competitiveness and compensation by NOR-bridging interactions. Background ions mainly competed with NOR for electrostatically interacting sites, but ions in the lower valence state were less competitive and preferentially occupied different adsorption sites, thus hardly affecting the adsorption of NOR. The higher valence state with higher concentration of ions had increased competing ability, and although the bridging interaction can compensate some adsorption sites, it still inhibited the adsorption of NOR. The PPY/CMC aerogels had fine affinity for multiple antibiotics, and the differences in adsorption capacity were determined by the charge and structural properties of the antibiotics themselves. Moreover, excellent recyclability of PPY/CMC aerogels was confirmed after five adsorption–desorption cycles as the diminished performance from 96.8% to 83.7%. These results will help us to understand the structure-performance relationship between contaminants and PPY/CMC aerogels, and prefigure the potential of PPY/CMC aerogels as a novel adsorbent for the removal of multiple antibiotics.
研究领域:
环境科学
·
材料科学
·
分子生物学
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2018
·Vol. 8
·期 23
·12870-12878
·
IF 2.936
Li Tan,Hailong Li,Mengru Liu
In this study, CMC–LDH beads were prepared and characterized using SEM, FTIR and TG analysis. The beads were applied for the removal of Cr(VI) from aqueous solution. The effects of adsorbent dosage, initial pH and initial concentration of Cr(VI) solution on Cr(VI) uptake were investigated in detail. Moreover, adsorption isotherms and adsorption kinetic models were employed to analyze the adsorption process, and a preliminary study of the reusability of the adsorbent was performed. The experimental results showed that the CMC–LDH beads could remove Cr(VI) from aqueous solution efficiently. When the initial concentration of the Cr(VI) solution was 100 mg L−1 and the adsorbent dosage was 12 g L−1, the removal efficiency of Cr(VI) reached 96.2%. After the CMC–LDH beads were reused 10 times, the removal efficiency of Cr(VI) still remained at 89.6%.
研究领域:
环境科学
·
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2018
·
IF 4.439
Jiangdong Dai,Zhongshuai Chang,Atian Xie,Ruilong Zhang,Sujun Tian,Wenna Ge,Yongsheng Yan,Chunxiang Li,Wei Xu,Rong Shao
The research of superhydrophilic interface is developing rapidly, but the preparations of superhydrophilic surfaces through simple methods are still challenging. Herein, we reported a facile, rapid and environmentally-friendly approach for preparing a novel superhydrophilic and underwater superoleophobic membrane via the thermal oxidation of Cu mesh and one-step coordinated assembly of Fe(III)-CMC chelate hydrogel. Superhydrophilicity was attributed to the hydrophilicity of Fe(III)-CMC chelate hydrogel and nanoneedle-like rough structure of CuO@Cu membrane. The membrane was used to separate a variety of oil/water mixtures and exhibited excellent separation performance. Moreover, the membrane exhibited the excellent durability and superior stability against corrosion conditions. We envision that the Fe(III)-CMC@CuO@Cu membrane with good underwater superoleophobicity could provide a candidate not only for oil/water separation but also many other potential applications such as underwater oil manipulation, self-clean, and bio-adhesion control.
研究领域:
材料科学
·
环境科学
·
界面化学
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2021
·
IF 6.901
Xing-Wen Huang,Song-Yi Liao,Yi-Dong Liu,Qiu-Shi Rao,Xiao-Kang Peng,Yong-Gang Min
A novel PEO/CMC-Li @PI hybrid solid polymer electrolyte membrane was designed/assembled by utilizing the polyethylene oxide (PEO) as matrix, the modified N-carboxymethyl chitosan (CMC-Li) as the facilitator to accelerate the transport of lithium ions and the as-prepared polyimide (PI) non-woven fabric as supporting framework. The CMC-Li was firstly synthesized and then combined with PEO and PI non-woven fabric to assemble PEO/CMC-Li@PI membrane using in all solid-state battery (ASSB). The microscopic morphology of the PEO/CMC-Li@PI hybrid membrane was characterized by SEM images. The membranes thermodynamic behaviors were analyzed by the DSC/TG curves, showing that the T m of the PEO/CMC-Li@PI decreased to 46.8 °C. When assembled into all-solid-state battery, the PEO/CMC-Li@PI membrane demonstrated the high ionic conductivities of 3.16 × 10–5 S/cm (30 °C) and 3.15 × 10–4 S/cm (60 °C) calculated from EIS spectra. The electrochemical window of the PEO/CMC-Li@PI cell was measured up to ~5 V at 60 °C. Moreover, the cell with PEO/CMC-Li@PI also delivered excellent electrochemical performances by comparing with other membranes. The high discharge capacities and cycling stability in PEO/CMC-Li@PI cell were assigned to the enhanced ionic conductivity by the added CMC-Li derivative and the improved mechanical properties by the PI non-woven fabric skeleton. The fabrication strategy of the novel PEO/CMC-Li@PI membrane may provide some new design directions for the solid polymer electrolytes in all-solid-state battery.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2024
·
IF 8
Qi Fang,Yanling Tan,Ran Yan,De Zhang,Mi Li,Xiaoyan Wu,Yilong Hua,Wenjing Xue,Rongzhong Wang
Nanoscale zerovalent iron (Fe 0 )-based materials have been demonstrated to be a effective method for the U(VI) removal. However, limited research has been conducted on the long-term immobilization efficiency and mechanism of Fe 0 -based materials for U(VI), which are essential for achieving safe handling and disposal of U(VI) on a large scale. In this study, the prepared carboxymethyl cellulose (CMC) and sulfurization dual stabilized Fe 0 (CMC-Fe 0 /FeS) exhibited excellent long-term immobilization performances for U(VI) under both anoxic and oxic conditions , with the immobilization efficiencies were respectively reached over 98.0 % and 94.8 % after 180 days of aging. Most importantly, different from the immobilization mechanisms of the fresh CMC-Fe 0 /FeS for U(VI) (the adsorption effect of –COOH and –OH groups, coordination effect with sulfur species, as well as reduction effect of Fe 0 ), the re-mobilized U(VI) were finally re-immobilized by the formed FeOOH and Fe 3 O 4 on the aged CMC-Fe 0 /FeS. Under anoxic conditions , more Fe 3 O 4 was produced, which may be the main reason for the long-term immobilization U(VI). Under oxic conditions, the production of Fe 3 O 4 and FeOOH were relatively high, which both played significant roles in re-immobilizing U(VI) through surface complexation, reduction and incorporation effects.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）