JOURNAL OF SOLID STATE CHEMISTRY
·
2017
·
IF 2.299
Sen Du,Luyan Wang,Ni Xue,Meishan Pei,Weiping Sui,Wenjuan Guo
The modified bentonite with a graft amount of 30% was prepared by polyethylenimine reacting with the epoxy bonds on the molecular of (3-Glycidyloxypropyl) trimethoxysilane and being grafted on the bentonite to remove amino black10B. The effects of pH, time, temperature and concentration on the adsorption capacity were studied. As the pH value increases from 3 to 10, the adsorption capacity decreased from 264.5 to 140.4 mg/g. The adsorption process reached equilibrium at 90 min when pH=3. The adsorption kinetics indicates that the adsorption process was very fast and in accordance with the secondary adsorption kinetics. The data about thermodynamic equilibrium was consistent with the Langmuir model. The adsorption process mainly depended on electrostatic attraction and hydrogen bonding and the adsorption data of Bent-PGLYMO-PEI showed that the maximum adsorption capacity reached 327.7 mg/g.
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
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Zhenyun Wang,Zhijiao Pan,Zhongquan Zhang,Qiaohong Zhang,Kefeng Luo,Chen Chen
To synthesize the mesoporous materials without templates is a green but challenging task. In this study, in the absence of any additional template, a self-template synthesis method was developed with the specific silane containing 3-dimethylaminopropyl (DMAP) both as the silicon source and self-template species. The obtained material exhibits a high specific surface area of 445 m 2 g −1 and an average pore size of 5.1 nm. The group of DMAP does not need to be removed, which can serve as the highly effective adsorption site for the removal of high-concentration and large-sized organic pollutants. The highest adsorption capacity (3 200 mg g −1 ) could be obtained for various organic pollutant species including traditional organic dyes and recently emerging perfluoroalkyl substances. Rich surface groups, abundant mesopores, and stronger surface lipophilicity synergistically contributed to this excellent adsorption performance.
研究领域:
材料科学
·
环境化学
·
纳米技术
·
吸附技术
·
水净化
✓ 已验证
产品关联
DOI
高影响因子
EUROPEAN POLYMER JOURNAL
·
2026
·
IF 6.8
Zihan Wei,Yuxin Feng,Zijing Mei,Yidong Zhang,Rukuan Liu,Sisi Liu,Airong Xu,Jin-Feng Dai
A novel highly efficient xanthan gum biomass adsorbent XG/PEI/PEGDE (xanthan gum/polyethyleneimine/polyethylene glycol diglycidyl ether), demonstrating its remarkable efficacy in eliminating twelve water contaminants including ten dyes, one herbicide and Cu(II) ion, was constructed through a simple one-pot approach under mild conditions. Systematic investigations revealed that the contaminants adsorptions by XG/PEI/PEGDE were apparently affected by adsorbent dosage, solution pH, temperature, contact time and initial concentration. The XG/PEI/PEGDE demonstrated its exceptional adsorption capacities ( q e 2,4-D = 221 mg g −1 , q e CR = 3820 mg g −1 , q e AB = 1984 mg g −1 at removal efficiencies of approximately 90%) and excellent reusability (minimal performance loss after six cycles), remarkably outperforming most reported xanthan gum adsorbents. Further, one thermodynamic, four isothermal and four kinetic models were utilized to explore the contaminants adsorption performances by XG/PEI/PEGDE. Meanwhile, how common ions Na + , K + , Cl − and HCO 3 − impacted the contaminants adsorptions were also assessed. The investigations from various characterization techniques demonstrated that the contaminants adsorptions by XG/PEI/PEGDE mainly depend on the hydrogen bond along with electrostatic interactions of XG/PEI/PEGDE with the contaminants. Remarkably advantageous over the existing XG-based adsorption materials in view of adsorption performance, easy fabrication and a broad range of applicability, this study provides a new insight into designing highly efficient biomass-based adsorption materials.
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2026
·
IF 29.1
Xiao Song,Peiqi Niu,Wenxi Gu,Chun Lam Clement Chan,Jiuhong Yi,Xu Liu,Peng Tan,Chon In Haydn Cheong,Qingwen Guan,Dan Fang,Bingpu Zhou,Zi Liang Wu,Ji Liu,Yan Yan Shery Huang,Iek Man Lei
Plant-based, iridescent, and dynamically tunable structural colored materials are highly attractive for sustainable photonic devices. However, fabricating complex architectures at the decimeter-scale with optical fidelity using plant-derived materials remains challenging, limiting their use in photonic devices and adaptive actuation. Here, we introduce an aqueous two-phase freeform fabrication strategy for vibrantly colored hydroxypropyl cellulose (HPC), where a robust immiscible aqueous environment is developed to preserve HPC cholesteric structures with < 3% shift in peak reflection wavelength over three days, enabling stable processing of large-scale structural colored materials. Our technique involves a food-grade support medium with low interfacial tension, allowing for embedded 3D printing of photonic structures and post-extrusion recovery of the HPC cholesteric domains. Intricate constructs, including interlocking chainmail, with feature sizes down to ∼50 µm and color consistency over lengths exceeding ten centimeters, can be achieved. Additionally, this approach can be utilized to create non-planar, mechanochromic hydrogel actuators with programmable multicolor designs, as demonstrated in an octopus-inspired hydrogel actuator and a color-shifting display for information encryption, camouflage, and human–machine interaction. Our green, freeform manufacturing approach provides new design possibilities for sustainable photonic devices and can be applied to industrially relevant applications.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL RESEARCH
·
2026
·
IF 7.7
Hua Liu,Jinhua Zhang,Minyao Zhou,Zhaorui Liu,Junyao Qian,Jinxiang Li
The sulfidation of zero-valent iron (S-ZVI) has emerged as an effective strategy to enhance reactivity for contaminants removal, yet the underlying mechanisms remain incompletely understood. This study explores the enhanced reactivity of S-ZVI derived from five different commercial sources in the aerobic removal of four representative azo dyes. Sulfidation converts the passive Fe-oxide film into a conductive FeS x layer, thereby facilitating interfacial electron transfer from the Fe 0 core to adsorbed dye molecules, and promoting sustained Fe(II) regeneration for decolorization of azo dyes. It demonstrates that the rate constants of S-ZVI for azo dyes removal exhibited 1.1–2.3 fold higher than unsulfidated ZVI, with strong linear correlations across dyes and sources (R = 0.69–0.98), suggesting predictable reactivity scaling. Correlation analysis, spectroscopic evidences and chelation–quenching tests jointly confirm that low charge-transfer resistance and sustained Fe(II) release govern the enhanced reductive reactivity, whereas radical-mediated oxidation contributes only as a secondary pathway. Consequently, S-ZVI exhibited efficient azo-bond cleavage, partial mineralization, and retained over 80% of its reactivity toward azo dye after six reuse cycles under aerobic conditions. Overall, this work establishes quantitative structure–reactivity relationships linking sulfur speciation, interfacial electrochemical properties, Fe(II) dynamics, and degradation kinetics, providing a predictive framework for designing durable and high-performance ZVI-based materials for wastewater treatment.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2025
·
IF 4.7
Linkai Zhao,Jing Zhao,Zhao Mo,Ziyi Wang,Zhaoli Xue,Lei Feng,Long Zhao
Metalloporphyrin-coated semiconductor nanoparticals may be one potential option for photodegradation of organic pollutants in watertreatment. To examine the function of lone pair electron-containing substituents in photocatalytic interfacial charge transfer mechanism, we synthesized three meso‑ substituted zinc porphyrins (Znpors) containing 4-pyridyl, 3-pyridyl and phenyl, denominated as 4-Pyr-Znpor, 3-Pyr-Znpor and Ben-Znpor, respectively. Density functional theory (DFT) calculations revealed similar electronic structrues and bandgaps of the three porphyrins, with clearly negaitive charges on the isosurface of pyridine substituents. Photoelectrochemical and impedance measurements reveal that 4-Pyr-Znpor/TiO 2 and 3-Pyr-Znpor/TiO 2 exhibit greater photocurrent response and lower charge transfer resistance as compared to Ben-Znpor/TiO 2 . Photodegradation of the organic pollutant AB1 using the composites suggests efficient photocatalysis ability of the three porphyrin-sensitized TiO 2 nanoparticals, with 4-Pyr-Znpor/TiO 2 exhibiting the highest degradation rate at the first 30 min. Our findings suggest that the pyridine substituent may attract holes and facilitate the charge separation efficiency, therefore enhancing the photocatalytic efficiency.
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Xiao-Juan Wang,Kai-ting Liu,Chuan-Wan Wei,Shu-Qin Gao,Ying-Wu Lin
A metallohydrogel designated as 2-PY-Fe was synthesized via a straightforward method, exhibiting both peroxidase-like and oxidase-like activities. On one hand, based on its peroxidase-like activity, 2-PY-Fe can serve as a catalyst for the degradation of various dyes. On the other hand, 2-PY-Fe metallohydrogel was used as an oxidase-like nanozyme to catalyze the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) to oxTMB. The addition of nitrite can trigger the diazotization of oxTMB, resulting in a decrease in the absorption peak at 654 nm and the emergence of a new signal peak at 446 nm resulting from the diazotization of oxTMB. Simultaneously, the existence of nitrite induces the decrease of the electro-oxidation signal of TMB and presents a new electrochemical signal from nitrite itself. A ratiometric colorimetric/electrochemical method and a smartphone-assisted detection method were established, combining the oxidase-mimicking catalysis and diazotization reaction. Additionally, this developed method was applied to monitor nitrite in real samples.
研究领域:
材料科学
·
环境科学
·
分析化学
·
纳米技术
·
酶模拟
✓ 已验证
产品关联
DOI
PubMed
高影响因子
WATER AIR AND SOIL POLLUTION
·
2024
·Vol. 235
·期 6
·1-12
·
IF 3.8
Li Haiyang,Li Xiaran,Quan Fengyu,Chen Zhaojun,Xia Yanzhi,Xiong Zhong
Multifunctional adsorbents are significant for the treatment of water-soluble dyes in contaminated aquatic systems and oily dyes in colored organic effluents. However, the existing adsorbent for both water-soluble and oil-soluble dyes is rare and the cleanup effect is not ideal. In this study, alginic acid carbon aerogel (AACA) as an effective wide-spectrum adsorbent was prepared through wet-spinning, ion-exchanging, drying, and high-temperature carbonization. AACA obtained a specific surface area of 1046.0 m 2 g −1 and a mean pore size of 2.82 nm. The adsorption capacities of AACA for methylene blue (cationic dye), methyl orange (anion dye), and oil red O (oil-soluble dye) were 493.5, 389.5, and 244.2 mg g −1 , respectively, which were improved in comparison with those of previously reported calcium alginate and ferric alginate carbon aerogels. The adsorption kinetics of AACA for the three dyes were fit for the pseudo-second-order kinetic model and the adsorption isotherms could be explained by the Langmuir model. ACCA revealed good adsorption performance for other eleven different sorts of dyes and binary dye systems. The adsorption mechanism was mainly confirmed to be π–π interactions.
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
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Si Hong,Aocheng Wei,Chao Xie,Xiaojun Shen,Jia-Long Wen,Tong-Qi Yuan
Deep eutectic solvents (DES) are renowned for their effectiveness in deconstructing lignocellulose and extracting lignin, yet the challenges lie in lignin condensation and the disposal of the DES remnants after pretreatment. To overcome these issues, this work proposed a holistic strategy utilizing deep eutectic solvent (DES)-driven lignocellulose deconstruction to upgrade lignocellulose into nitrogen-doped carbon dots (CDs) and iron-decorated porous carbons, serving as photocatalysts and adsorbents, respectively. These nitrogen-doped CDs via the choline chloride/FeCl 3 DES pretreatment exhibited abundant nitrogen/oxygen functional groups, enhancing photocatalytic activities and facilitating effective charge separation and transfer. The photocatalytic efficiency of the CDs on dyes reached 97 % under acidic conditions primarily, and free radical quenching experiments indicated that singlet oxygen was the dominant oxidant species. Moreover, the adsorption capabilities of Fe-decorated porous carbons for Congo red reached 2432.3 mg·g −1 , surpassing most existing carbon materials. The adsorption mechanism was due to a synergistic effect including physical adsorption, coordination, hydrogen bonding, electrostatic, and π-π interactions. This study proposed a synergetic conversion of DES and lignocellulose into functional carbon materials for wastewater remediation, which inspired the development of a green and cost-effective biorefinery.
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
INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Mingyuan Liu,Yue Zhang,Ying Liu,Shu Yang,Yansong Liu,Weijia Wang,Zhen Li,Wendi Liu,Liming Wang,Yanping Liu,Xiaohong Qin
Multifunctional aerogels constructed from natural waste biomass have attracted great attention in the fields of green energy harvesting, flexible wearable sensing and natural environment restoration. However, the complex and polluted extraction of natural materials and the poor mechanical property have seriously hindered the development of natural material-based aerogels . Hence, a novel aerogel with capabilities of high-elasticity, stabilized constructions and weightlessness was prepared via waste flax staple fibers (simply physically disrupting) and multi-walled carbon tubes. Due to the assistance of cross-linking agent and carbon tubes, the aerogel was endowed with multiple properties including high photothermal conversion (97.2 %), superstability at the wide range of 0–29 KPa and outstanding compression resilience at different strains (up to 60 % and 100 cycles). Consequently, it is promising that the fabricated aerogel may be as a piezoresistive sensor to monitor different locations of the body for continuous detection of motor behavior. Further, the sample was also utilized as an evaporator with excellent water evaporation effect (1.93 kg·m −2 ·h −1 ) under 1 sun and to efficiently purify various types of wastewater for obtaining pure water. This multi-purpose aerogels prepared in this work display admirable potential for efficient environmental purification, advanced smart materials and green energy harvesting.
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 MEMBRANE SCIENCE
·
2024
·
IF 8.4
Fupeng Li,Jiaqi Li,Hukang Guo,Weilin Feng,Jianyu Wang,Chuanjie Fang,Liping Zhu
Permeable, selective, and stable polymeric membranes are essential for efficient molecular separation in organic solvents . Polymers of intrinsic microporosity (PIMs) with rigid and twisted chain structures offer abundant pores for high solvent permeability and are emerging as an ideal membrane material. However, guaranteeing high separation selectivity and stability is challenging owing to the wide pore size distribution and low swelling resistance in organic solvents. In this work, we developed intrinsically ultramicroporous polyamides (PAs) with cardo-pendant groups to create crosslinking, ultrathin, and defect-free nanofilms for organic solvent nanofiltration . The molecular simulation confirmed the pivotal role of cardo-pendant group structures in the amine monomers and exhibited their effect in creating pore channel structures within the PAs. Distinctive rigid fluorenyl-based cardo-pendant groups were introduced in amine monomers to finely tailor the packing of PA chains for high ultramicroporosity and a finely tuned pore size. We further achieved the growth of such PAs using a cyclic deposition strategy, in-situ generating highly crosslinking nanofilms with an ultralow thickness of 23–36 nm without structure relaxation. As such, the typically-designed PA membranes demonstrated high and stable solvent permeance (e.g., 18 L m −2 h −1 bar −1 for methanol) and high solute rejection (up to 95 % rejection of 306 Da Azure I), which is superior to its counterparts and current PIM membranes, presenting a new perspective for efficient organic solvent nanofiltration .
研究领域:
材料科学
·
分离技术
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Yao Hui,Rukuan Liu,Jingwen Lan,Liuzemu Li,Zhihong Xiao,Airong Xu,Xuefeng Wei
Eco-friendly and renewable sodium alginate, as a potential alternative to fossil resources, has attracted considerable attention in wastewater treatment field. Herein, we develop a SA/PEI/PEG (sodium alginate/polyethyleneimine/polyethylene glycol diglycidyl ether) adsorbent in which SA was functionalized by PEI/PEG via a facile but effective strategy of one-pot gelation of aqueous SA/PEI/PEG solution. Systematic investigations were accomplished to explore the effects of adsorbent factors on the adsorption performances of the adsorbent towards the anionic dyes CR (congo red), AB-10B (amido black-10B), and AB-25 (acid blue-25). Strikingly, the SA/PEI/PEG exhibited exceptional adsorption performance to CR (2782 mg g −1 , 90.6 %), AB-10B (1369 mg g −1 , 90.9 %) and AB-25 (4221 mg g −1 , 92.6 %) at 30 °C, pH = 3, 200 r min −1 and oscillated 24 h, and demonstrating exceptional reusability after six cycles of adsorption-desorption cycles. Furthermore, the three kinetic, four isothermic and one thermodynamic models were used to investigate the adsorption behaviors of the adsorbent towards these dyes. The possible adsorption mechanism is suggested: Hydrogen bond interactions and electrostatic attractions between SA/PEI/PEG and the dyes primarily contribute to exceptional adsorption capacity. The SA/PEI/PEG adsorbent endowed with easy fabrication, extraordinary adsorption capacity and excellent reusability promises potential application prospects in wastewater purification industry.
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）