SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Dongcheng Li,Shenghu Wang,Huanji Song,Xianying Xu,Shihao Yang,Yuyang Dong,Yan Luo,Weiyang Lv
Efficient and sustainable Fenton-like systems are highly desired for degrading persistent pollutants. However, their development is often hindered by the slow redox kinetics and poor durability of single active sites in conventional metal-based catalysts. Herein, we developed a bimetallic Fe/Cu catalyst (FeCu-BN) with highly dispersed metal sites anchored on boron nitride (BN), which offered boosted activity and stability via the cooperative redox cycles between Fe and Cu sites. The FeCu-BN catalyst achieved nearly 100% removal of sulfamethoxazole (SMX) within 20 min through activating peroxymonosulfate (PMS), with a rate constant of 0.421 min − 1 significantly surpassing those of its monometallic counterparts and other advanced catalysts. Systematic experiments and theoretical calculations revealed that the Cu sites not only optimized the electronic structure of the Fe sites but also provided electrons extracted from pollutants to promote the Fe 2+ /Fe 3+ cycle, thereby triggering concerted radical and non-radical reactions for SMX elimination. Consequently, the FeCu-BN/PMS catalytic system operated stably over a wide pH range and exhibited exceptional tolerance to various inorganic ions and complex aqueous matrices. Furthermore, in a continuous flow membrane reactor, the system maintained efficient SMX removal over 20 h without significant performance loss. This work uncovered the synergistic redox cycling mechanism in bimetallic catalysts and offered valuable insights for designing dual-site catalysts for environmental remediation.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Water Process Engineering
·
2025
·
IF 6.7
Xingtao Xue,Min Yao,Junxin Yu,Huiyun Lu,Yubo Liu,Hongbin Wang,Huasheng Gao
The widespread use of antimony as a catalyst in the textile industry presents risks to ecosystems and human health. This study investigated the removal of Sb(V) using three iron-based coagulants —polymeric ferric sulfate (PFS), ferric chloride (FeCl 3 ), and ferrous sulfate (FeSO 4 )—via coagulation-sedimentation, and elucidates the coagulation mechanism by speciation analysis and characterization of precipitate. At a wastewater pH of 5–6, PFS and FeCl 3 achieved 96 % removal of 1.0 mg-Sb/L with a dosage of 12 mg-Fe/L, while FeSO 4 showed only 78 % removal, primarily due to the requisite oxidation step to Fe(III) before hydrolysis and precipitation. Phosphate ions, organic dyes and humic acids could compete with Sb(V), thereby reducing its removal efficiency. Sequential chemical extraction and instrumental characterization analysis revealed that the primary components of the precipitate were FeSbO 4 and Fe r SbO 4 (OH) 3r-3 when PFS or FeCl 3 was used as the coagulant. During Sb(V) removal process employing FeSO 4 coagulant, a large portion of Fe(II) underwent direct reaction with Sb(V) to form FeSb 2 O 6 , while the remaining fraction was oxidized to Fe(III) and generated FeSb 2 O 6 and Fe r SbO 4 (OH) 3r-3 via the Fe(III) reaction pathway. The removal of Sb(V) was mainly due to chemical precipitation (90 %) and hydrolysis adsorption (10 %). PFS coagulation is a promising method for removing Sb(V) from textile wastewater.
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Chao Wang,Peijuan Chu,Tengfei He,Cheng Yi,Yue Yao,Lijia Liu,Chunhong Zhang
The application of membrane separation technology in wastewater treatment and pharmaceutical purification has attracted considerable attention. The development of a membrane with effective separation performance and antibacterial properties is of considerable interest for the separation and purification of antibiotics. Here, a thin-film composite (TFC) polyester membrane with effective antibiotic removal and antibacterial properties was fabricated via a facile one-step interfacial polymerization (IP) strategy. Naringenin (Nar), a natural product of flavonoid material derived from the pericarp, was utilized as the aqueous monomer. The suitable reactivity of Nar afforded the resulting membrane with a highly negative charged surface. The rejection performances for the antibiotics cephalothin, cefuroxime sodium, ceftriaxone sodium, and cefoperazone sodium were 96.3 %, 97.7 %, 99.2 %, and 99.8 %, respectively. The pure water permeance was 7.5 L m −2 h −1 bar −1 at a transmembrane pressure of 5 bar. The antibacterial efficacy was greater than 99.0 % against Escherichia coli and Staphylococcus aureus , attributable to the flavonoid structure of Nar. The present work proposed a feasible strategy to prepare TFC membranes with high nanofiltration performance and intrinsic antibacterial efficacy.
✓ 已验证
产品关联
DOI
高影响因子
DYES AND PIGMENTS
·
2025
·
IF 4.2
Wenjie Gong,Man Zhang,Yun Li,Meng Dong,Yuan He,Beini Zeng,Yajie Shu,Kunkun Zhu,Jinming Zhang,Jinfeng Wang
Inspired by grapevine morphology, we propose cellulose-based polymer dyes that promote the growth of dye chromophores ("grapes") onto cellulose. Through homogeneous derivatization, we systematically synthesized a series of polymer dyes incorporating varied cellulose contents (2 ∼ 6 wt%) and diverse reactive dye structures (mono- and dual-functional groups), achieving salt-free coloration of cotton fabrics. Comprehensive characterization of FT-IR and UV-vis spectroscopy verified the covalent grafting of reactive dyes onto the cellulose. The 4 wt% cellulose formulation demonstrated optimal rheological properties and structural stability, achieving 74.9% dye uptake without electrolytes, which was a significant improvement over the 56.4% typical of traditional high-salt/high-alkali processes. Fabrics dyed with this formulation exhibited the deepest color intensity, hydrophilicity, breathability, and maintained mechanical properties. The performance enhancement arises from synergistic effects of polymer chain entanglement between dye-cellulose conjugates and cotton fibers, establishing a sustainable alternative to traditional dyeing by simultaneously eliminating salt usage.
✓ 已验证
产品关联
DOI
高影响因子
Materials Chemistry Frontiers
·
2023
·Vol. 7
·期 14
·2896-2905
·
IF 7
Ke-Xin Li,Guo-Wei Guan,Ling-Min Pei,Qing-Yuan Yang
Since peroxidases have potential applications as biocatalysts, it is important to improve their usefulness. Traditional “semiconductor photocatalyst + peroxidase” catalytic cascade systems are inspired by nature's photosynthesis and provide the basis for maintaining the optimal stability and reactivity of the peroxidase enzyme. However, inherent fragility, non-recyclability, and low catalytic efficiency still limit their industrial application. In this work, we present a new generation of photoperoxidase catalytic platform, g-C3N4/PDI-HRP@ZIF-90 (graphite carbon nitride; PDI: perylene diimide; and HRP: horseradish peroxidase), for efficient photo-peroxidase catalysis. This new composite catalyst was created by introducing a rationally designed metal–organic framework (ZIF-90) in situ as a dual “modulator” for the “semiconductor photocatalyst + peroxidase” catalytic cascade system, which is highly applicable to industrial applications. In situ introduced modulators of ZIF-90 not only significantly increase the electron transfer rate but also significantly improve enzyme stability, cyclability, and molecular transfer rates between photoenzyme catalytic systems through spatial confinement. The new catalytic system (semiconductor + MOF + peroxidase) is capable of responding to a cascade catalytic reaction with wavelengths > 420 nm and is resistant to a catalytic environment at pH = 3. This work outlines a versatile and effective strategy to use the properties of MOFs to improve two major drawbacks of the efficient industrial use of peroxidases (inefficiency and poor stability), paving the way for efficient green biomanufacturing industrialization using peroxidases.
✓ 已验证
产品关联
DOI
高影响因子
ACS ES&T Water
·
2022
·
IF 0
Jian Li,Pei Xiao,Jie Yu,Lei Li,Yiyun Zhang,Yun Ma,Fei Liu,Yi Li
Nanofiltration (NF) technology is attractive in desalting and concentrating dyeing wastewater in the textile industry. A highly efficient NF membrane is critical in reducing the cost of the process. Here, a facile and reliable approach to prepare an NF membrane for the selective separation of dye/salt is proposed by surface grafting of 3-aminopropyltriethoxysilane (APTES) on a fresh polyamide (PA) layer after interfacial polymerization (IP). A thin layer of APTES with a thickness of ∼64 nm was found successfully covalently bonded onto the PA surface via esterification and amidation reactions. The thin-film composite (TFC)-1.0 membrane grafted with 10% APTES achieved a high water permeance of 44.8 L m–2 h–1 bar–1, which was 4.7 times higher than that of the control TFC membrane. Interestingly, the rejection of monovalent salt (NaCl, 11.5%) and divalent salt (Na2SO4, 17.2%) decreased significantly, while the rejection for different dyes (Congo red, reactive blue-19, Coomassie blue G-250, and methyl blue) remained over 99.0%. These noticeable changes in separation performances could be attributed to the large pore size of the active layer, resulting from the interference of APTES on the post-cross-linking of a PA network. The poly(ethylene glycol) (PEG) filtration experiments confirmed that the mean pore size of the membrane was enlarged significantly from 0.51 to 1.17 nm after surface modification. Finally, the modified membrane showed good long-term stability and excellent separation efficiencies in fractionation of a high salinity Congo red/NaCl (0.2/50 g L–1) mixture. Overall, this work provides a practical strategy to prepare a permeable and selective NF membrane for dye and salt separation by surface grafting of the nascent PA layer.
✓ 已验证
产品关联
DOI
Journal of Environmental Chemical Engineering
·
2022
·
IF 7.968
Wenhui Zhang,Haiming Song,Lijing Zhu,Gang Wang,Zhixiang Zeng,Xiaocheng Li
Thin-film composite (TFC) nanofiltration (NF) membranes efficiently remove dyes from wastewater. However, most of the membranes often sacrifice water flux for high rejection because of the trade-off between them. The demand for TFC membranes with high rejection and high water flux is increasing. Here, polyethylene (PE) membrane with a thickness of 7 µm was covered by polydopamine and polyethyleneimine (PDA/PEI), and then directly initiated interfacial polymerization (IP) with trimesoyl chloride (TMC), forming the dense and negatively charged polyamide-polyester selective layer. As the amount of PDA/PEI increases, the selective layer becomes denser, leading to the efficient removal of anionic dyes at high water flux. The water flux of the optimal membrane is 61.0 ± 18.3 L m −2 h −1 bar −1 , and the removal efficiency is 91.4 ± 0.8% for an anionic dye eosin Y (EY, M w = 691.9 Da), but poor decolorization for natural VB 12 (M w = 1355.4 Da). Moreover, the TFC membrane shows excellent selectivity for filtrating dye/NaCl mixture solution. The synergistic effect of adsorption-filtration control the removal of anionic dyes from wastewater in large flux. This work utilizes commercial PE porous substrate to fabricate TFC membrane having outstanding separation performance and a low thickness of about 7 µm.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2022
·
IF 10.53
Anqi Wang,Wei Chen,Hang Xu,Zongli Xie,Xiaoying Zheng,Mingxiang Liu,Yueting Wang,Nannan Geng,Xiaoying Mu,Mingmei Ding
Graphene oxide lamellar 2D membranes are widely researched for ion separation and molecular sieving in aqueous solution. Extension of the research of GO-based membranes for organic solvent nanofiltration has drawn much attention but is still in its infancy. The relatively low solvent permeability remains a difficult problem to overcome. Inspired by the shell of the Namib Desert beetle, a heterostructured lamellar membrane was prepared by incorporating MoS 2 quantum dots (MQDs) into the graphene oxide membrane. A dual-functional zone was formed, where hydrophilic areas exhibited excellent absorption performance for polar solvents and hydrophobic regions were propitious to the discharge of polar solvents when incorporating a moderate amount (10%) MQDs, denoted as GM-10 (nonpolar solvents presented the opposite performance). The synergistic effects of the dual-functional zone successfully improved the transport efficiency for various solvents, and the flux of various solvents for GM-10 was over three times higher than that of the pure GO membrane. Simultaneously, the composite biomimetic membrane showed excellent stability. This paper provides a novel strategy for constructing a heterostructured dual-functional zone for 2D lamellar membrane modification without the sacrifice of rejection, revealing the potential for further optimization of separation performance and membrane stability.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Xueyan Xue,Nan Xue,Dandan Ouyang,Liuqian Yang,Yanan Wang,Hui Zhu,Aikelaimu Aihemaiti,Jiao Yin
Iron single-atom catalysts (Fe SACs) hold great promise for peroxymonosulfate (PMS) activation and degradation of organic pollutants in wastewater. However, insights into crucial catalytic sites and activation mechanisms of biochar-based Fe SACs for PMS remain a challenge. Herein, cotton stalk-derived biochar-based Fe SACs (Fe SACs-BC) with an asymmetric Fe-N/O-C configuration were prepared, and their PMS activation and acid orange 7 (AO7) degradation mechanisms were investigated. The results showed that the removal efficiency of the Fe SACs-BC catalyst with Fe-N3O-C configuration for AO7 and other five investigated organic dyes reached 95–99% within 15 min. The EPR spectrums, quenching experiments, electrochemical analysis, masking experiments, XPS, and theoretical calculations indicated that degradations of organic dyes were dominated by singlet oxygen, which was generated by direct PMS conversion at the electron-deficient carbon and iron sites in the Fe-N3O-C configuration. The Fe SACs-BC/PMS exhibited high removal efficiency and strong tolerance in different water matrices with a wide pH range, various coexisting anions and interfering substances, showing great potential and applicability for efficient treatment of actual textile wastewaters.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2020
·
IF 7.183
Mei-Ling Liu,Lu Li,Yu-Xuan Sun,Zheng-Jun Fu,Xue-Li Cao,Shi-Peng Sun
Efficient water treatment by a membrane with enduring high permeability and rejection is still a challenge because of the commonly recognized trade-off effect and the pore-blocking induced fouling issue. Herein, the scalable production of electro-conductive polyaniline/polyimide membranes for electrocatalysis enhanced filtration is reported for the first time. The prepared membrane presents the following significant advantages: (1) superior dye-solution permeability (204.1 L m −2 h −1 bar −1 ) while not sacrificing selectivity (99.8% for congo red), which is benefited from the synergic interplay of the enhanced hydrophilicity, enlarged pore size and high adsorption active site; (2) elevated electrical conductivity by almost two orders of magnitude, leading to significantly improved permeability recovery rate (87%) and electro-oxidative pollutant removal; (3) optimal compatibility of the two polymers results in robust mechanical strength without micro-cracks, which realizes large-scale membrane fabrication without performance deterioration. These results indicate that the synergy of electrocatalytic polymers with robust filtration polymers through direct phase inversion strategy will provide a paradigm shift of designing high-performance membranes with practical applications.
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2020
·
IF 1.943
Shuhui Wang,Yu Huang,Xu Meng,Xiang Liu
Manganese oxide octahedral molecular sieves (OMS-2) are important environmental oxidants and catalysts in sewage treatment; however, most existing work has only focused on its catalytic activity . In this work, we first report the highly efficient and heterogeneous OMS-2 for the directly oxidative degradation of organic dyes (including reactive red 2, reactive blue 19, acid orange 7, rhodamine B and methylene blue), via a non-radicals process, under acidic condition. Then the effects of OMS-2 concentration, pH condition, reaction temperature and initial concentration of organic dye have been investigated for directly oxidative degradation. In addition, OMS-2 has been successfully recycled at least five times for directly oxidative degradation without any obviously decrease in activity. These findings provide general guidance for designing active OMS-2 for cost-effective water and wastewater treatment.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2021
·
IF 10.588
Mei Hong,Die Li,Bingyu Wang,Jingyu Zhang,Bin Peng,Xiaoling Xu,Yan Wang,Chunyang Bao,Jing Chen,Qiang Zhang
Excess boron in water could result in a critical hazard to plants and humans. Traditional treatment approaches cannot efficiently remove boron from water, especially during seawater desalination using reverse osmosis technology . Achieving satisfactory adsorption capacity and rate for boron remains an unmet goal for decades. Herein, we report cellulose-derived polyols as high-performance adsorbents that can rapidly remove boron and organic pollutants from water. Cellulose-derived polyols were synthesized from saccharides and cellulose via controlled radical polymerization and click reaction. Remarkably, CA@NMDG can adsorb boron with an astonishing capacity of ~34 mg g -1 in 10 min, which surpasses all those cellulose-based materials reported thus far, meanwhile, much faster than those of commercial adsorption resin. Moreover, cellulose-derived polyols also showed high removal efficiencies (70–98% in several minutes) toward certain organic pollutants, including Congo red and Reactive Blue 19. The water-insoluble characteristic of cellulose-derived polyols is advantageous to be separated from the treated sewage after adsorption for reuse. This work provides a novel insight into the fabrication of safe, fast, and high-capacity cellulose adsorbents for water purification .
✓ 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）