INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Zhuqian Xiao,Yiluo Pan,Qian Zhao,Jiayao Yang,Hongpeng Wang,Linkai Yu,Xiaoliang Ding,Jun Huang
Targeted modification of cellulose corresponds to the physicochemical characteristics of dyes is advantageous to increase its adsorption capacity, but which is still exclusive. Here, a Fenton oxidation system was applied to fabricate microcrystalline cellulose (MCC) supported iron (Cel@Fe). Physicochemical property analysis elucidated that the incorporation of Fe nanoparticles tuned the surface charge for oxidized MCC. The carboxyl groups from partial oxidation of MCC could chelate Fe 2+ or Fe 3+ ions, forming [cellulose-Fe ion (H 2 O) x ] complexes. Polyaromatic 1,9-dimethylmethylene blue (DMB) and acid yellow 79 (AY79) were used as the modeling dyes to evaluate the adsorption capacity of cationized Cel@Fe. With a theoretical maximum adsorption capacity of 255.1 mg/g for AY79 on [email protected] and 79.2 mg/g for DMB on MCC, adsorption matched the pseudo second order ( R 2 = 0.999) and the Langmuir isotherm ( R 2 = 0.999) models for both dyes. The adsorption for AY79 on Cel@Fe was found to be primarily dependent on electrostatic interactions, atomic non-covalent interactions (Fe O), and steric effect, according to the reduced density gradient (RDG) Gaussian density functional theory (DFT) calculation. This work presents a promising strategy to synthesize cationized and sinkable cellulose adsorbent for efficient decontamination of wastewater containing dyes.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2024
·
IF 5.9
Shixiong Chen,Jiarong Wang,Jing Zhang,Qinghao Zeng,Hong Jiang,Haiqing Chang,Tian C. Zhang,Xiaobao Tian,Kai Wang,Ying Liang
Surface modification could remarkably improve the oil–water separation ability of membrane, but suffers from limited survival positive effect layer after long-term operation. Herein, we report a systematic comparative study between bulk and surface modification (i.e., synchronous or sequential electrospun/elecrospraying) on hydrophobic polyvinylidene difluoride (PVDF) membrane. A hydrophilic UiO-66-NH 2 @polyacrylic acid micro/nanospheres (UiO@PAA) was selected as functional layer to improve the separation and adsorption capability of PVDF. The surface modification (SMM) and bulk modification membranes (BMM) exhibited the similar water wetting behavior in air as the same surface layer. The spider filament-like nanofibers of BMM could enhance the mechanical stability and dispersion uniformity of active sites among the PVDF fibers. In terms of oil-in-water emulsions separation ability, the BMM was superior to the SMM with the maximumly increase of separation efficiency and filtration flux to 1.3 % and 192.6 L m -2 h −1 , respectively. As for dye absorption, the BMM showed better adsorption capacity with a removal efficiency over 96 %. For the low concentration of methylene blue, the removal efficiency of SMM was only 94 %, while the removal efficiency of the BMM reached 98 % at room temperature. In addition, the BMM exhibited higher removal efficiency over 94 % compared with that less than 84 % of SMM after eight cycling tests, confirming its advantages in repeatability. This study demonstrates that the bulk modification can endow the initial membrane with better performance and durability, showing more promising prospects in actual wastewater treatment.
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
INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Zhichao Bao,Vivian F. Lotfy,Xuesong Zhou,Shiyu Fu,Altaf H. Basta
Agricultural wastes are huge source of organic materials for preparation of active carbon, which can be applied to water treatment by absorbing the dissolved substances. Rice straw (RS) or their pulping byproducts, Kraft black liquor (KBL) and kraft lignin (Lignin-KBL) are used as precursors for the preparation of activated carbons (ACs). The process was carried out with activation assistance of potassium ferrate (K 2 FeO 4 ). The optimum temperature of activation on RS precursor is 700 °C evaluating by the textural analysis and the liquid phase adsorption models. The prepared activated carbon (RSFAC) under K 2 FeO 4 from RS at this temperature provided highest BET surface area and total pore volume (440.5 m 2 /g and 0.274 cm 3 /g). It had excellent adsorption capacities of cationic and anionic dyes and a maximum adsorption capacity of iodine (585.2 mg/g). Applied the optimum activation temperature to pulping by-products (KBL), the result showed AC with BET surface area and total pore volume of 378 m 2 /g and 0.218 cm 3 /g, respectively. These results are higher than that obtained from using phosphoric acid activating agent, and at temperature 450 °C (BET surface area and total pore volume were 310.6 m 2 /g and 0.243 cm 3 /g). The ferrate activation of RS and lignin-KBL is contributed to the function of iron oxide as an oxidation catalyst, which gave the ACs with mesoporous and microporous. Regarding to the liquid phase adsorption models and kinetics, anionic dye adsorption equilibriums of all RSFACs (Coomassie brilliant blue R-250 CBB) follow the Freundlich model, but the cationic methylene blue dye adsorption equilibriums mostly follow the Langmuir model. Adsorption kinetics of these RSFACs are well-explained in terms of dye kinetic adsorption by the pseudo-second-order model. The procedures for AC preparation from rice straw under K 2 FeO 4 provided a good route to utilize agricultural residues.
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
SEPARATION AND PURIFICATION TECHNOLOGY
·
2021
·
IF 7.312
Peizhang Zhou,Jiang Cheng,Yuanyang Yan,Shouping Xu,Cailong Zhou
Homogeneous hydrophobic ZIF-67 decorated copper mesh was prepared by ultrafast electrodeposition and subsequent hydrophobization with stearic acid or 1-dodecanethiol. The preparation can be completed within 9 min under room temperature. Based on the hard-soft-acid-base (HSAB) theory, there exists difference of the interaction between Co 2+ and specific groups (carboxy or sulfhydryl), the oil/water separation and dyes adsorption performances were thus affected after ZIF-67-coated copper mesh was hydrophobized. The separation efficiency of the hydrophobic meshes for various oil/water mixtures was all greater than 98%, and remained almost no decline after several cycles of separation. However, the intrusion pressure of ZIF-67/copper mesh modified by 1-dodecanethiol is higher than the one modified by stearic acid. At the same time, the 1-dodecanethiol modified ZIF-67/copper mesh displayed a high adsorption capacity for Congo red (near 2000 mg/m 2 ), while the adsorption rate of the mesh modified by stearic acid is significantly faster. This work proposed a simple and fast method to build continuous, homogeneous MOFs film for oil/water separation and dyes adsorption.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2019
·
IF 3.131
Linglin Han,Yu He,Ran An,Xiangdong Wang,Yulin Zhang,Lingying Shi,Rong Ran
Polydopamine (PDA) composited LAPONITE® cross-linked hydrophobically associated (PLHA) hydrogels were facilely constructed by in situ polymerization. The PLHA hydrogel exerted improved mechanical properties and excellent stability with an additional cross-linking agent LAPONITE®, which guaranteed the hydrogel could be utilized for long-time and reusable application. Notably, the self-healing property of PLHA gels could be achieved easily by the hereinafter three factors: hydrophobic association, LAPONITE® and PDA. Compared with the pristine hydrophobic associated (HA) gel, excellent dye adsorption capacity towards both anionic and cationic dyes came out in PLHA gels owing to the negative charges on LAPONITE and abundant functional groups on PDA nanoparticles such as amine groups, catechol groups and aromatic moieties. The PLHA gels could bind organic dyes via various ways, including coordination, electrostatic interaction, hydrogen bonding or π-π stacking interaction. Compared with the reported works, our proposed method provided the opportunity to prepare a novel robust, self-healing physically dual cross-linked hydrogels, which have the potential to be applied in tissue engineering and the reusable adsorbents of organic colorants.
研究领域:
材料科学
·
环境科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2019
·
IF 2.291
Qian-Qian Liu,Xian-Jun Weng,Ke-Fen Yue
Three novel metal-organic frameworks (MOFs) formulated as [Cd(5-mipa)(bpe) 1.5 ·0.8DMF] n ( 1 ), [Zn(5-mipa)(bpe)] n ( 2 ), and {[Ni(5-mipa)(bpe)]·0.4IPA} n ( 3 ) (IPA = iso-propyl alcohol) were successfully obtained via solvothermal reaction between the corresponding transition metal nitrates and 5-methylisophthalic acid (5-H 2 mipa), 1,2-bis(4-pyridyl)ethylene (bpe). All compounds were adequately characterized, and their structures were verified by single-crystal X-ray diffraction. The solid-state luminescence properties of three complexes were investigated at ambient temperature. 1 shows high sensitivity for Fe 3+ and nitrobenzene by the luminescence quenching effect with the low detection limit 7.0 × 10 −5 M and 6.84 × 10 −5 M, respectively, and its mechanisms have been studied in detail. Additionally, the selective adsorption of compounds 2 and 3 to anionic dyes (Methyl Orange (MO) and Congo Red (CR) and cationic dye Methylene Blue (MB) were examined. The results demonstrated that 2 and 3 showed good adsorption properties for MO and CR anionic dye molecules.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2020
·
IF 3.99
Chong Cai,Ran Wang,Shufeng Liu,Xiaoya Yan,Lexin Zhang,Mingli Wang,Qi Tong,Tifeng Jiao
In recent years, new family of two-dimensional (2D) transition metal carbide and carbonitrides-MXene has become critical materials due to their excellent structure and performance. Herein, we have investigated the synthesis of a new MXene-based composite material for efficient dye adsorption in sewage treatment, via a facile hydrothermal method . The characterization of the phytic acid (PA)-MXene composites showed that new rod-like Ti(OH)PO 4 components appeared in the hydrothermal process. In addition, compared with the original MXene , the prepared PA-MXene composite exhibited enhanced adsorption properties for the model dyes MB and RhB, and the adsorption capacity of the PA-MXene composite on MB remained at about 85 % after 12 cycles, indicating important potential as an adsorbent material in wastewater treatment .
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
CRYSTENGCOMM
·
2013
·Vol. 16
·期 4
·609-615
·
IF 3.879
Wei Lü,Yao Wu,Jie Chen,Yue Yang
A facile and fast one-pot method was developed to synthesize a magnetic graphene–Fe3O4 nanocomposite (G–Fe3O4) at low reaction temperature. The synthesized nanocomposite was characterized by transmission electron microscopy, X-ray diffraction, and Fourier transform infrared spectroscopy. The Fe3O4 nanoparticles with average sizes of 24 nm were formed uniformly on graphene sheets. The as-prepared nanocomposite was used as an adsorbent to remove dye from wastewater using the organic dye rhodamine B as the adsorbate. The G–Fe3O4 nanocomposite shows excellent ability to extract organic pollutants and can be easily manipulated in a magnetic field for separation. The results suggest that G–Fe3O4 nanocomposites have great potential to remove organic dyes from wastewater.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Polymer Materials
·
2023
·
IF 5
Cong Gui,Dengxu Wang,Jinfeng Cao,Shengyu Feng
Three-dimensional (3D) hierarchically porous materials are widely used owing to their unique pore structures and rich specific surface areas. Herein, we design a 3D macroporous and mesoporous silicone sponge via a one-pot efficient thiol oxidative coupling reaction between polysiloxanes and HS-modified mesoporous polymers. The diameters of the macropores and mesopores are higher and lower than 50 nm, respectively. The sponge possesses a surface area of 20.72 m2 g–1, a porosity of 61.39%, and good compression and thermal insulation properties. A dye adsorption evaluation confirmed that the sponge selectively removed cation dyes from a mixed dye solution. This synthesis method for 3D macroporous and mesoporous sponges can potentially synthesize composites of other mesoporous materials.
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
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Shang-yu Chen,Yu-fan Deng,Ting Huang,Nan Zhang,Yong Wang
As an eco-friendly material, the wide application of polylactide (PLA) in wastewater treatment is favorable for eliminating the possible second-pollution induced by the common membrane materials. However, the application of PLA is also greatly restricted by the hydrophobicity and inert surface of PLA-based materials. In this work, the electrospun PLA fiber film with stereocomplex crystallites (SC-PLA) was prepared through electrospinning, then the successive decorations of self-polymerization of polydopamine (PDA) and PDA-assisted MXene deposition were carried out. The physicochemical performances such as wettability, mechanical properties, and photothermal conversion ability were intensively researched. Then, the oil/water separation ability and the organic pollutants removal effect of the composite membranes were systematically researched. The results show that the composite membrane is amphiphilic, which results in the membrane exhibiting high fluxes and excellent oil/water separation performance in the separation process of different types of emulsions, and oil/water separation efficiency can be further enhanced under light irradiation. Specifically, the maximum adsorption capacity of the composite membrane for methylene blue (MB) reached 434.8 mg/g, and the composite membrane can also simultaneously remove oil and MB from the emulsified solution in the one-time separation process. This work demonstrates that the PLA-based composite membranes have potential application in sewage purification and can be the alternative for the next generation membrane separation material.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2015
·
IF 4.074
Ting Lu,Tao Xiang,Xue-Lian Huang,Cheng Li,Wei-Feng Zhao,Qian Zhang,Chang-Sheng Zhao
Post-crosslinking as a new strategy to prepare sodium alginate (SA) beads with controllable swelling behavior, pH sensitivity and adsorption capacity was developed by using the solution of glutaraldehyde (GA), acetic acid and hydrochloric acid as the coagulating agent, for which could be used to fabricate polysaccharide beads in a large scale. Fourier transform infrared spectroscopy and thermogravimetric analysis convinced the successful cross-linking of SA by GA. The macro-porous structures of the beads were observed by scanning electron microscopy. Both acetic acid and hydrochloric acid had great effects on the swelling behavior and pH sensitivity of the SA beads. The SA beads could adsorb cationic dye (methylene blue) as high as 572 mg/g and other metal ions (Cu 2+ , Ag + and Fe 3+ ). The adsorption processes fitted well with the pseudo-second-order kinetic model and the Freundlich isotherm. The large-scale production of SA beads with tunable properties opens a new route to industrially utilize polysaccharide beads in wastewater treatments, intelligent separation and so on.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
PubMed
高影响因子
REACTIVE & FUNCTIONAL POLYMERS
·
2025
·
IF 5.1
Pengfei Yang,Yan Qin,Zheng Xu,Wangxu Hou,Yujie Guo,Kexin Zheng,Junying Li,Weitao Hao,Liying Sun,Feng Ma
With the development of modern industry, water pollution has become an urgent environmental issue, so it is very urgent to find one-step strategy to treat with complicated wastewater. In this paper, poly (vinyl imidazole - co - methacrylic acid) cryogels were prepared with freezing polymerization for the treatment of complicated wastewater containing not only cationic dyes and anionic dyes but also common organic solvents. For the preparation of cyrogels, with the increase of the molar ratio of methacrylic acid to vinyl imidazole, the adsorption capacity of dyes varied as 271.33–187.09 mg·g −1 for methyl blue, 342.96–150.16 mg·g −1 for methyl orange, 7.76–85.72 mg·g −1 for methylene blue, and 19.19–110.10 mg·g −1 for crystal violet. Thus, by adjusting the molar ratio of monomers, a variety of versatile cryogels could be designed to treat with dye solutions of different type and concentration. Adsorption mechanism was then investigated through kinetics and isotherm, which showed single-layer chemical adsorption. Moreover, the surface hydrophilicity of porous cryogels made it possible for the separation of oil-water mixtures with over 95 % separation efficiency by selective water permeation. This study provides a quite new approach to prepare cryogels with both positive and negative charges.
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
危险品化学品经营许可证（带存储）