Journal of Environmental Chemical Engineering
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2026
·Vol. 14
·期 2
·121666
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IF 7.5
Jianjun Chen,Qian Zhao,Hongxing Shi,Ying Li,Limin Wang
The coexistence of cationic and anionic dyes in wastewater necessitates the development of amphoteric adsorbents. Herein, amphoteric hydrogel microspheres SA-S@PDA-H was successfully fabricated for their simultaneous removal. The microspheres were synthesized by crosslinking sodium alginate (SA) with Ca²⁺, followed by coating with polydopamine (PDA) and stearyl trimethyl ammonium chloride (STAC). The microspheres prepared through acid treatment to replace STAC was labeled SA-S@PDA-H, endowing the microspheres with enhanced adsorption capacity. FT-IR, SEM, zeta potential was utilized to characterize the structure and morphology of SA-S@PDA-H. The adsorption behavior and mechanism of SA-S@PDA-H for cationic and anionic dyes was investigated in depth. The results show SA-S@PDA-H exhibit 127.3 % of swelling ratio. The adsorption of SA-S@PDA-H for MB and MO reaches equilibrium at about 300 min followed by PSO model. The adsorption process of SA-S@PDA-H for MB and MO followed Temkin and Dubinin-Radushkevich model, respectively, and the maximum adsorption capacity displayed 869.1 mg/g at 45°C and 730.9 mg/g at 15°C, for MB and MO, respectively. MB adsorption increased with higher temperature and pH, while MO adsorption increased with lower temperature and pH. Adsorption of both dyes decreased at high ionic strength, and Cu 2 + and Fe 3+ had a significant inhibitory for MB than K + , while the inhibitory effects of SO 4 2- or CO 3 2- is more obvious for MO than Cl - . SA-S@PDA-H exhibited excellent adsorption performance for mixed cationic and anionic dyes through synergistic effects including electrostatic interactions, hydrogen bonds, π-π stacking and micropore filling. The microspheres maintained over 80 % removal efficiency after five consecutive adsorption-desorption cycles.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Kaibo Zhang,Chenglong Yang,Zhenggong Wang,Feng Zhang,Jian Jin
Organic solvent nanofiltration (OSN) holds substantial application potential in industries such as chemical engineering, pharmaceuticals, and energy, where the molecular design of membrane materials plays a crucial role in separation performance. In this work, a polyester/amide thin-film composite membrane featuring an amphiphilic network was fabricated via interfacial polymerization, using 2,2-bis(3-amino-4-hydroxyphenyl)hexafluoropropane (bisAPAF) and trimesoyl chloride (TMC) as the aqueous and organic phase monomers, respectively. The incorporation of low-polarity CF 3 groups into the polar polyamide network created amphiphilic nanochannels, enabling simultaneous high permeance for both polar and non-polar organic solvents. Moreover, the pore structure of the polyester/amide selective layer was precisely tailored through the modulation of NaOH additives, ensuring highly accurate molecular discrimination. The optimized membrane exhibited outstanding OSN performance, with methanol and n-hexane permeances reaching 16.6 and 8.5 L m −2 h −1 bar −1 , respectively, while maintaining a molecular weight cut-off of 343 Da. Importantly, it demonstrated remarkable structural integrity and anti-swelling properties during prolonged operation. These findings provide an advanced molecular-level design strategy for constructing highly perm-selective OSN membranes with tailored transport pathways.
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CARBOHYDRATE POLYMERS
·
2026
·
IF 13.2
Hongxing Shi,Qian Zhao,Mingjie Han,Yin Li,Limin Wang,Jiying Men
Dye-contaminated wastewater from the textile and dyeing industries poses severe environmental and health risks due to the persistence and toxicity of synthetic dyes. To address this issue, sodium alginate (SA)-based composite gel microspheres were fabricated via ionic crosslinking with calcium chloride followed by acid exchange to enhance structural stability and adsorption performance. Two types of functionalized adsorbents were synthesized and optimized: SA modified, and with stearyltrimethylammonium chloride (SA/S-H) and SA co -functionalized with poly(sodium 4-styrenesulfonate) (SA/S/PS-H). Comprehensive characterization using scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS) confirmed the successful preparation and compositional uniformity of the adsorbents. Adsorption kinetics for methylene blue (MB) followed the pseudo-second-order model, reaching equilibrium within 6 h， while isotherm data fitted the Dubinin-Radushkevich (D-R) model. Notably, the incorporation of PSSS significantly enhanced the adsorption capacity; at 45 °C, SA/S/PS-H achieved a remarkable maximum adsorption capacity of 900.91 mg/g, compared to 612.61 mg/g for SA/S-H. The dominant adsorption mechanisms were identified as electrostatic attraction, micropore filling and hydrogen bonding. Furthermore, the microspheres showed excellent reusability despite the interference of co-existing cations. This study presents a simple and scalable approach for constructing high-performance bio-based adsorbents with significant potential for sustainable and practical treatment of dye-laden wastewater.
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CHINESE JOURNAL OF POLYMER SCIENCE
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2026
·
IF 4.6
Yang Xu-Xuan,Luo Zhen,Shao Jia-Xing,Feng Xue-Quan,Xu Zi-Yang,Cui Chun-Yan,Liu Wen-Guang
Oral ulcers, a prevalent oral mucosal condition, involve epithelial discontinuity, tissue fluid loss, reactive oxygen species accumulation, and bacterial infection. Dynamic saliva flow and physical friction from food residues further aggravate the damage and delay healing. To address this problem, we developed a stable PolyLA-based adhesive patch by combining α -lipoic acid (LA) and betaine (BET) using a simple one-step solvent evaporation method, referred to as PolyLA/BET. The carboxylate and tertiary ammonium groups on BET formed multiple hydrogen bonds with PolyLA, effectively inhibiting the depolymerization of LA. PolyLA/BET firmly adheres to oral tissues via hydrogen bonding mediated by surface carboxyl groups. Moreover, zwitterionic structure of BET enabled the patch to absorb and retain water. Upon hydration, the patch maintains structural stability while acquiring flexibility and adhesiveness, which are essential characteristics for durable sealing and the formation of a stable moist wound healing microenvironment. The patch also sustained the release of LA, providing antioxidant and antibacterial activities. In a rat oral ulcer model, PolyLA/BET outperformed the commercial patch in promoting wound healing.
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Journal of Materials Chemistry B
·
2026
·
IF 6.2
Mingpu Sun,Danyang Wang,Chuanchuan Fan,Chunyan Cui,Qihui Zhou,Wenguang Liu
Wound healing involves a cascade of four overlapping phases—hemostasis, inflammation, proliferation, and remodeling—that demand temporally coordinated intervention. However, most current hemostatic materials merely target the initial hemostatic stage and frequently impair physiological blood clotting, an essential endogenous platform for subsequent tissue regeneration. Herein, we report a novel powder hemostatic material that synergizes with endogenous clotting to orchestrate a continuous hemostasis-to-regeneration cascade. The powder consists of a lipoic acid-sodium lipoate copolymer (PolyLA-LANa) and quaternized chitosan (QCS). Upon contact with blood, this powder rapidly absorbs fluid and forms an adhesive hydrogel in situ via electrostatic and hydrogen bonding. The material concentrates platelets and coagulation factors to form a stable “material–clot” composite. This composite effectively seals wound sites and acts as a functional reservoir for the sustained release of LA-derived bioactive molecules. In rat and rabbit models (liver, femoral artery, muscle/vessel injury), the powder achieves rapid hemostasis with significantly reduced blood loss. In a challenging rat tooth extraction socket model, it stabilizes the clot, prevents dry socket formation, and promotes alveolar bone preservation and soft tissue healing. This “clotting-synergistic” strategy transforms passive hemostats into active regenerative platforms for complex bleeding wounds.
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ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Mao Xu,Qi Tang,Yuchen Liu,Jiaqi Shi,Weiyu Zhang,Chan Guo,Qiuwen Liu,Weiwei Lei,Cheng Chen
Two-dimensional nanomaterial-based membranes have earned broad attention because of their excellent capability of separation performance in a mixture that can challenge the conventional membrane materials utilized in the organic solvent nanofiltration (OSN) field. Boron nitride (BN) nanosheet membranes have displayed superb stability and separation ability in aqueous and organic solutions compared to the widely researched analogous graphene-based membranes; nevertheless, the concentration polarization of organic dye pollutants fades their separation performance and eclipses their potential adoption as a feasible technology. Herein, PDDA-modified BN (PBN) and sodium alginate-modified BN (SBN) nanosheet membranes with a thinner laminar structure are facially fabricated to improve the molecule separation performance compared to that of the pristine BN membrane. In aqueous separation application, the SBN membranes (2 μm) can reject positively charged dyes up to 100% and the PBN membrane (2 μm) could reject negatively charged dyes up to 100%. Impressively, the PBN membranes (3 μm) and SBN membranes (3 μm) demonstrate record high performances in OSN, with a permeance of 809 L m–2 h–1 bar–1 and 97.71% rejection to acid fuchsin in acetonitrile and 290 L m–2 h–1 bar–1 and 94.94% rejection to Azure B in dimethyl sulfoxide, respectively. The charged PBN and SBN nanosheet membranes demonstrate stable separation capability, exhibiting their potential for practical water and organic solvent purification processes.
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BIOMATERIALS
·
2023
·
IF 14
Ning Liao,Bing Pang,Han Jin,Xixi Zhao,Dongyan Shao,Chunmei Jiang,Junling Shi
Ganoderma lucidum spores (GLSs) have been suggested to provide optimal structures for transporting orally bioavailable drugs. However, the double-layer wall and cavities of GLSs are naturally closed. This study aimed to modify GLSs into porous carriers by opening the layers and internal cavity with iturin A (IA) followed by potassium hydroxide (KOH) or hydrochloric acid (HCl). The (IA + KOH)- and (IA + HCl)-treated GLS carriers exhibited a high loading rate of 301.50 ± 2.33 and 268.18 ± 7.72 mg/g for the hydrophilic methylene blue (MB) and hydrophobic rifampicin (RF), respectively. The mechanisms underlying the modification involved the enhancement of the specific surface area with IA and the exposure of hydrophilic groups or hydrophobic groups of the GLSs with KOH or HCl. The sustained 48-h molecule-release profiles of the MB- and RF-loaded GLS carriers were best fitted using a first-order kinetics model in simulated gastric (or intestinal) fluid compared with other models. In mice, the designed GLS carriers had high adhesion capacities onto the mucosa of the digestive tract and long retention times (120 h), and even promoted the secretion of mucus and expression of several key intestinal barrier proteins. This study provided a new method to modify GLSs into oral carriers with selective drug affinity, high loading capacity, sustained drug release, and high adhesion to the digestive tract.
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JOURNAL OF MEMBRANE SCIENCE
·
2023
·
IF 9.5
Zhixiao Liu,Zhiming Mi,Lingjun Meng,Yangyang Huang,Dexing Zhang,Junman Wang,Kaiyang Zhang,Jingling Xiao,Pingli Liu,Zhi Rao,Hongru He,Shuai Wang
Simultaneous separation of divalent co-ions and counter-ions from mixed ions water environment was urgently needed to improve separation efficiency and reduce energy consumption. The charged Janus nanofiltration membranes (NFMs) came into being based on the Donnan effect, however, its practical application was still limited by complex preparation, low permeability or poor ion selectivity. Here, with carboxylated polysulfone (PSF–COOH) ultrafiltration membrane as the support layer, a newly discovered quaternary ammonium salt containing diamine group (ethidium bromide, EB) was used to modify pristine polyamide nanofilm to prepare a novel charged Janus NFM. Structural characterization and molecular dynamics simulation indicated that the difference in electrostatic force of PSF-COOH with piperazine (PIP) and EB resulted in a difference of at least 20 times between their diffusion rates and hence achieved their regular distributions in the oil-water interface. As a result, EB modification induced the structure heterogeneity (charge and morphology) of the polyamide layer, which allowed the selectivity of both monovalent/divalent anions and cations to be higher than 45, while ensuring a permeability of up to 56.2 L/m 2 ⋅h. Moreover, other analogues of EB were applied and proved the generality of the mechanism for preparing charged Janus NFMs in this study, which represented a method for the scalable preparation of ultra-selective membranes with heterostructure for simultaneous separation of divalent co-ions and counter-ions.
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BIORESOURCE TECHNOLOGY
·
2023
·
IF 11.4
Zhiyong Qin,Kaiqiang Dong,Yidan Zhang,Yanling Jiang,Liuting Mo,Siyu Xiao
Rational design of adsorbed materials with three-dimensional (3D) hierarchical porous structure, sustainable, high adsorption capacity, and excellent selective is of great significance in practical applications. Herein, a novel aerogel adsorbed material with 3D hierarchical porous architecture was fabricated by employing naturally abundant sodium alginate (SA)/gellan gum (GG) as basic construction blocks to achieve sustainability as well as applying polyethyleneimine (PEI) as functional material for highly efficient and selective capture of Congo red (CR). The aerogel sorbent exhibited strong microstructure, numerous active adsorption sites and being ultralight. The resulting aerogel adsorbent showed high adsorption capacity (3017.23 mg/g) toward CR, exceedingly most previously reported sorbents. Furthermore, the aerogel adsorbent was accompanied by outstanding selectivity for CR in four binary dye systems. Meanwhile, after 3 cycles, the adsorption capacity decreased by 14.8 %, but still maintained the adsorption capacity of 559.79 mg/g. Therefore, excellent adsorption performance, and superb selectivity prefigures its great prospects for wastewater purification.
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JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION
·
2022
·
IF 3.682
Leilei Zang,Quhan Cheng,Shan Bai,Kai Wang,Xiaoyan Yuan
Oxidative stress caused by the harsh microenvironment after implantation of an artificial graft with mismatching mechanical properties usually triggers inflammation responses, which have adverse impacts on tissue regeneration. For coping with these problems, in this work, bioactive fibrous scaffolds were developed from specially synthesized carboxylated poly(ester urethane)urea (PEUU) and gelatin (Gel) by encapsulating pterostilbene (Pte) for the first time. The prepared electrospun membranes exhibited self-adaptable mechanical properties with high elasticity owing to the bonded electrospun fibers, cross-linking network between PEUU and Gel, and the inherent flexibility of the PEUU polymer in the fibrous matrix. The PEUU/Gel/Pte electrospun membrane containing 7% Pte could promote in vitro proliferation of human umbilical vein endothelial cells, and regulate vascular smooth muscle cells with excellent antioxidant properties via free radical scavenging. In vivo results in a rat subcutaneous implantation model further demonstrated the positive effect of the specially prepared PEUU/Gel/Pte scaffold on both normal cell growth and anti-inflammatory by promoting cellularization and polarizing macrophages toward the M2 phenotype. These PEUU/Gel/Pte electrospun membranes with adaptability benefit to tissue regeneration by modulating inflammation responses, especially applications in vascular regeneration.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Dongxue Han,Guohua Li,Jie Wang,Teng Zheng,Liang Peng,Lin Li,Tifeng Jiao
Self-assembly is a technique that utilizes non-covalent interactions between molecules to assemble into ordered nano-scale aggregates from disordered states. Langmuir-Blodgett (LB) technique is one of the commonly applied methods for constructing molecular assemblies at gas-liquid interfaces. In this study, a series of ordered composite films of amino-functionalized carbon nanotubes (MWCNTs-NH 2 ) and different dye molecules were prepared using LB technique. The surface-enhanced Raman scattering (SERS) performance of MWCNTs-NH 2 /dye composite films was investigated. The experimental results showed that MWCNTs-NH 2 /Methylene blue (MB) composite film exhibited good SERS enhancement performance for Rhodamine 6 G (R6G) molecules with an enhanced factor (EF) of 2.16 × 10 5 , and had certain repeatability and uniformity, making it suitable for the detection of trace molecule. The photoelectric conversion efficiency of MWCNTs-NH 2 /dye composite films were also explored. MWCNTs-NH 2 /MB composite film not only exhibited the highest photocurrent value but also had the smallest impedance compared with the other films, indicating that it had lower impedance, better carrier transport rate, and more stable performance. This work provides an effective method for fabricating the composite LB films based on the carbon nanotubes with great SERS and photoelectric conversion efficiency.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Guohua Li,Pengfei Bian,Ran Wang,Yan Li,Huiju Cao,Senlin Zhang,Zongshuo Hao,Mingli Wang,Tifeng Jiao
Through this study, a variety of carbon spheres/dye (CS/dye) composite films were prepared based on the Langmuir-Blodgett (LB) technology. The prepared CS/dye composite films were tested for acid and alkali gases discoloration characteristics. The CS/CR composite film shows good acid/alkaline gas sensing performances, and its characteristic absorption peaks have a significant movement in the UV–vis spectrum. In addition, the surface enhancement of the Raman scattering (SERS) experiment proves the good Raman enhancement performance of the prepared composite LB film with the enhanced factor (EF) of 8.5 × 10 4 . The relative standard deviation of Raman intensity is 24.74 %, indicating the good reproducibility and uniformity of composite film, which makes it applicable to the detection of trace molecules. Furthermore, the CS/NR composite film has a current density of 1217 μA/cm 2 when the potential voltage is 1 V, indicating that the composite film has a high carrier transfer rate, which provides a reference for further exploration of optoelectronic devices of CSs system.
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