COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
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IF 5.4
Xin Long,Jian Lan,Shanshan Dai,Hongsheng Lu,Na Wang,Baogang Wang,Yuanqiang Zhu
An instant dissolving W/O polymer prepared via reverse-phase emulsion polymerization. • An ultra-high acid resistance polymer formed from water-soluble hydrophobic monomers. • Integrated application for drag reducing and acidic thickening. • Quantum chemistry is used to clarify the mechanisms of dissolution and acid tolerance. Despite the considerable potential of multistage alternating acid fracturing Technique for unconventional tight reservoir stimulation, the integration of acid-thickening and drag-reduction functions within a single additive remains challenging due to the slow dissolution of gelling agents, poor acid resistance of drag reducers, and compatibility issues among multiple chemical additives. Herein, a multifunctional polymer emulsion (PAADT) was rationally designed using a hydrophobic monomer (AT-100) and a high-charge-density symmetric cationic monomer (Dimethyl Diallyl Ammonium Chloride, DMDAAC) to overcome these limitations. PAADT completely dissolved in water and concentrated HCl within 120 s and 330 s, respectively, while retaining viscosity stability for over 120 h and demonstrating exceptional tolerance to multivalent ions. Quantum chemical calculations, including LogP, independent gradient model based on Hirshfeld partition (IGMH), and electrostatic potential (ESP) analysis, revealed that the synergistic effect of polymer-water interactions and electrostatic repulsion governs the dissolution behavior and acid-salt resistance of PAADT. This work establishes a structure–property relationship between monomer architecture and macroscopic performance, providing a molecular design strategy for developing multifunctional polymers for complex environments. Download: Download high-res image (246KB) Download: Download full-size image
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CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Chao Chen,Jianhan Wang,Peijun Lin,Kai Shi,Long Zhang,Hongwen Zhang,Dong Wu,Yanlei Hu
Laser-assisted fabrication of a high-performance multifunctional smart window. • Smart window integrating optical modulation and energy harvesting. • Superhydrophobic surface enables self-cleaning and droplet energy conversion. Although hydrogel-based smart windows are promising energy-saving building components, they suffer from contamination-induced performance degradation and limited functionality. In this study, we report a zero-energy-consumption hydrovoltaic smart window (ZEC-HSW) that structurally combines optical regulation, self-cleaning, and droplet-induced energy harvesting. Owing to the reversible phase transition, the ZEC-HSW autonomously switches between transparent and opaque states, achieving a high visible transmittance modulation (ΔT vis = 61.8%) and a large solar modulation ability (ΔT sol = 46.3%). The bioinspired superhydrophobic surface (WCA ≈ 153°, WSA ≈ 3°) enables effective self-cleaning while being intrinsically coupled with raindrop-driven hydrovoltaic energy conversion, delivering an instantaneous voltage of ~30 V with stable output over 10,000 s. Thermal experiments and building simulations demonstrate a 7.5 °C reduction in indoor temperature, accompanied by average decreases of 34.66% in cooling energy consumption and 1756 kg in carbon emissions. This work establishes an integrated smart window strategy that unifies passive optical regulation, environmental self-maintenance, and droplet-enabled energy harvesting, offering a scalable strategy for sustainable buildings. Download: Download high-res image (271KB) Download: Download full-size image
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REACTIVE & FUNCTIONAL POLYMERS
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2026
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IF 5.4
Xingyu Hu,Zhiyong Li,Xiaoge Li,Xiangyan Ji,Jingjing Meng
A highly conjugated biobased liquid HPE monomer was fabricated from HMF. • The benzimidazole motif HPE contributes to a relatively mild curing behavior. • The HPE endows the resin with favorable mechanical properties and dimensional stability. • The HPE networks showed good solvent resistance and shape memory. • This strategy provided a tractable biocomposite fabrication. A novel bio-based epoxy monomer (HPE) bearing a rigid benzimidazole-furan skeleton was synthesized from 5-hydroxymethylfurfural (5-HMF). The activation energy for HPE-derived networks was relatively lower than that of the DGEBA counterparts, indicating favorable curing conditions. The cured HPE-thermosets exhibited exceptional mechanical properties. For instance, HPE/APB achieved good tensile strength (105.67 ± 13.43 MPa), flexural strength (125.43 ± 16.65 MPa), and impact strength (17.99 ± 1.10 kJ m −2 ). Moreover, the thermomechanical investigation also suggested its advantageous storage modulus of 3.55 GPa at 30 °C, which surpassed the petroleum-based DGEBA counterparts. Notably, HPE-networks displayed unique dimensional stability with a thermal expansion coefficient ranging from 87 to 115.4 ppm °C −1 below 200 °C. In contrast to DDM-cured thermoset, APB-cured networks also favored decreasing dielectric constant and loss. On the whole, the APB hardener outperformed the DDM in most cases. Furthermore, glass fiber-reinforced HPE composites demonstrated 90.8% peeling off in DMF under microwave-assisted conditions, making sustainable fiber recycling possible. This work provides a promising strategy for HMF-related renewable epoxy resins. Download: Download high-res image (147KB) Download: Download full-size image
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Journal of Environmental Chemical Engineering
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2026
·Vol. 14
·期 5
·123941
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IF 7.5
Mengyuan Yang,Yanling Li,Temitope Fausat Ajibade,Ziang Zhou,Zhaoping Cai,Lixiang Li,Huali Tian
Covalent organic frameworks (COFs) are effective materials for water treatment membranes due to their tunable pore structures and high compatibility. While composite modification strategies combining plant polyphenol tannic acid (TA)-Fe³⁺ and COFs show great promise for TFC membranes, they typically involve organic solvents or complex pre-modification of the fillers. In this study, a green, fully-aqueous layer-by-layer (LbL) self-assembly strategy was employed to prepare TA-Fe(COF-LZU1)/PES membranes. By exploiting the inherent synergy between the rigid crystalline channels of COF-LZU1 and the adhesive TA-Fe network, this approach directly utilizes pristine COF-LZU1 without secondary modification. Unlike conventional methods, the entire process avoids organic solvents, offering a highly sustainable technical alternative. The incorporation of COF-LZU1 significantly enhanced the membrane surface properties, with surface roughness increasing from 17.0 ± 2.2 nm to 43.8 ± 8.5 nm and the water contact angle decreasing from 77.0 ± 1.6° to 20.0 ± 1.0°, thereby substantially improving the membrane’s hydrophilicity. The TA-Fe(COF-LZU1)/PES membrane achieved a pure water permeance of 35.85 L·m - ²·h - ¹·bar - ¹, representing a 11.5% increase over the TA-Fe/PES membrane. It exhibited excellent separation performance, achieving high rejections of 98.3% for Direct Red 80, and further demonstrated robust stability in mixed dye/salt solutions. In five-cycle bovine serum albumin (BSA) tests, the membrane exhibited improved antifouling durability, yielding a flux recovery ratio of 75.5%. Additionally, it operated stably across a pH range of 4–8. This green self-assembly approach provides a practical strategy for preparing composite membranes for dye wastewater treatment.
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Desalination and Water Treatment
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2026
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IF 3.4
Hao Li,Minru Su,Chen Shi,Rouyi Wang,Anqi Xu,Xiaolan Shen
High catalytic activity and long-term stability of particle electrodes are key to three-dimensional electro-activated peroxydisulfate (3D-E-PDS). This study developed the Fe-based reduced graphene oxide (Fe/rGO) hydrogel particle electrodes prepared using a low-temperature hydrothermal method, demonstrating a 9.77-fold increase in tetracycline hydrochloride (TCH) degradation rate compared with conventional two-dimensional (2D) E-PDS system. The structural properties and catalytic activities of the Fe/rGO hydrogel particles clearly depended on the iron precursor, with the Fe 3 + -derived hydrogel exhibiting the highest catalytic activity. After systematically optimizing the operational parameters (PDS concentration, current density, particle dosage, initial solution pH, TCH concentration, and agitation rate), the 3D-E-PDS system achieved a TCH degradation efficiency of 94.44% and total organic carbon removal efficiency of 46.62% within 2 h. In water matrices, Cl − promoted TCH degradation, whereas SO 4 2− , PO 4 3− , and especially CO 3 2− inhibited the degradation. Radical quenching experiments identified SO 4 · − , ·OH, 1 O 2 , and ·O 2 − as the primary reactive species. After six cycles, the 3D-E-PDS maintained a TCH degradation efficiency of 82.56%, with a degradation rate 2.56 times higher than that of the 2D-E-PDS system, validating its stability and reusability. Overall, this study establishes a one-step hydrothermal synthesis protocol for Fe/rGO hydrogel particle and demonstrates the efficacy of 3D-E-PDS in TCH degradation.
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LANGMUIR
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2026
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IF 4.4
Tianle Li,Liangliang Yan,Jingyi Yu,Yuxiu An
The efficient recovery of heavy oil in hypersaline reservoirs (>100,000 mg·L–1 TDS) remains a critical challenge due to the rapid structural collapse of conventional hydrophobically associating polymers. Addressing this limitation, we propose a “High-Density Weak Hydrophobe” strategy. A novel amphiphilic terpolymer (AMDA) was synthesized via free-radical aqueous solution polymerization, featuring a remarkably high incorporation (14.3 mol %) of the short-chain, sterically bulky monomer diacetone acrylamide (DAAM). Unlike traditional polymers containing long-chain alkyl groups (e.g., C16-HMPAM) that undergo catastrophic “salting-out” and coiling at high salinity, AMDA constructs a dense yet reversible dynamic network, retaining over 81% of its viscosity at 90 °C in 100,000 mg·L–1 brine. This structural resilience enables the formation of ultrastable O/W emulsions, achieving a heavy oil viscosity reduction rate exceeding 95%. Core flooding experiments demonstrated an incremental oil recovery of 34.6% of the original oil in place (OOIP) at 65 °C. Furthermore, microfluidic visualization and zeta potential analysis revealed a synergistic EOR mechanism: beyond macroscopic mobility control, AMDA facilitates in situ emulsification and induces a wettability reversal from oil-wet to water-wet by establishing a robust electronegative hydration layer on the rock surface. This study validates the “High-Density Weak Hydrophobe” paradigm as a superior alternative to conventional strong-hydrophobe systems, offering a robust solution for enhanced oil recovery in harsh saline environments.
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PubMed
高影响因子
ACS Omega
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2026
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IF 5.2
Binxiao Wei,Meiling Wang,Yonggen Su,Hengzhi You
Over recent decades, the demand for packaging materials has grown exponentially, posing significant challenges to environmental protection and sustainable development. To address this issue, we developed a novel fluorinated surfactant, characterizing its structure and calculating its solubility parameter (19.57 (J/cm3)1,2) via theoretical simulations. This surfactant was then employed to formulate a high-performance emulsion suitable for a paper coating. Remarkably, a coating weight of only 7 g/m2 conferred excellent resistance properties, providing resistance to 95 °C water, 25 °C olive oil, and 100 °C olive oil for approximately 1 h. Furthermore, we evaluated the recyclability of the coated paper. Our results demonstrate a high paper recovery rate of over 85%, far exceeding the industry average value of 54%. The recycled paper also retained a robust tensile strength of 11.4 kN/m. We propose that this innovative fluorinated emulsion holds great promise for the food packaging sector, offering a pathway to significantly reduce the carbon emission and achieve sustainable development goals.
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Polymers
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2026
·Vol. 18
·期 4
·458
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IF 5.8
Jing Chang,Jia Xue,Shizhen Liang,Wei Zhao,Zhen Li
Effective treatment of coal slime water is essential for sustainable coal preparation plant operation but hindered by the stable suspension of fine, negatively charged particles. To address this, a novel star-shaped inorganic–organic hybrid polymer (aluminum hydroxide-polyacrylamide, Al-PAM) was synthesized via in situ polymerization. Its performance was systematically compared with well-established coagulants/flocculants—polyaluminum chloride (PAC), non-ionic polyacrylamide (NPAM), and their binary combination through settling tests and quartz crystal microbalance with dissipation monitoring (QCM-D). The results showed a positive correlation between the molecular weight of Al-PAM and its flocculation efficiency. The optimal variant, Al-PAM-442, achieved an exceptionally high initial settling rate (50.4 m/h) and low supernatant turbidity (45.77 NTU) at an ultralow dosage of 6 mg/L. QCM-D analysis elucidated the mechanism: Al-PAM forms a thick, soft, and irreversibly adsorbed hydrated layer on silica, enabling strong electrostatic anchoring and effective polymer bridging. In contrast, PAC adsorption was reversible, while NPAM formed a thin, compact film with poor bridging capacity. Although the combined PAC/NPAM system showed synergistic performance, it required a significantly higher dosage (70 mg/L). This study demonstrates that the star-shaped Al-PAM architecture successfully integrates charge neutralization and bridging into a single molecule, offering a highly efficient and practical solution for industrial coal slurry dewatering.
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ENVIRONMENTAL SCIENCE & TECHNOLOGY
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2026
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IF 12.2
Chunyan Zhang,Jiarong Liu,Qing Cao,Tianzeng Chen,Yonghong Wang,Peng Zhang,Hao Li,Biwu Chu,Xiuhui Zhang,Qingxin Ma,Hong He
The coupled chemical transformation of NOx and SO2 plays a pivotal role in the atmospheric sulfur and nitrogen cycles. While these pollutants show negligible gas-phase interrelationship, they exhibit strong synergistic interactions in multiphase aerosol chemistry, yet their underlying reaction mechanisms remain elusive. We demonstrate that O2 serves as the key mediator enabling efficient coupling between aqueous-phase bisulfite (S(IV)) and nitrite (N(III)) through a previously overlooked reaction pathway at environmentally relevant pH (3.0–6.0). Under isolated conditions at pH 4.4, S(IV) undergoes sluggish O2-driven oxidation (4% sulfate yield), whereas N(III) remains oxidation-resistant. In the absence of O2, S(IV)-N(III) redox reactions yield limited sulfate (4%) and N2O, which is consistent with traditional mechanism cognition. Strikingly, the presence of O2 dramatically enhances co-oxidation, simultaneously producing sulfate (43%) and nitrate (36%). Theoretical calculations identify •HSO3 radicals (from HSO3‐/O2 interaction) as key intermediates that combine with O2/NO2‐ to form transient complexes ([•SO5···ONOH]− and [SO3-NO2···•HO2]−), which ultimately decompose into sulfate and nitrate. Observations in Beijing highlight the dominant role of the S(IV)-N(III) synergistic oxidation mechanism in sulfate formation, surpassing the conventional NO2- and O3-driven pathways. This breakthrough enhances our knowledge of atmospheric chemistry, particularly in the coupled cycling of sulfur and nitrogen, including sulfate/nitrate generation and HONO removal dynamics.
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ENERGY & FUELS
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2026
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IF 6
Shuai Zhou,Qiuyan Quan,Hongke Yang,Zhi Ye,Xueli Long,Tinglei Liu,Haien Yang,Dongzhi Yang
This study systematically investigates the swelling, time-dependent mechanical decay, and degradation of polyacrylamide (PAM)-based gels under simulated high-temperature reservoir conditions. A Ca2+-induced “environmentally self-enhancing” PAM/sodium alginate (SA) composite gel was designed to alleviate the pronounced performance decline caused by swelling and degradation. In this system, progressive cross-linking between SA and Ca2+ in formation water leads to the formation of an interpenetrating network (IPN), which contributes to improved structural stability. Experimental results indicate that incorporating 1.5% SA into a 20% PAM gel increases the swelling strength by a factor of 6.7, while the three-month strength retention improves from 14% to 50%. The composite gel also shows enhanced fatigue resistance and a delayed swelling response. In addition, PAM/SA microspheres prepared via inverse emulsion polymerization exhibit improved mechanical robustness after Ca2+ cross-linking, with the elastic modulus increasing by 36%. Core flooding experiments show that PAM/SA microspheres are able to gradually form stable plugging structures in porous media. After 7 days of swelling, the plugging ratio increases by 23% and the oil displacement efficiency improves by 3% compared with PAM microspheres. Microfluidic visualization further indicates that swollen microspheres form reconfigurable deposits within pore throats, which suppress preferential flow. Both the plugging pressure and the frequency of pressure fluctuations increase noticeably, and the displacement efficiency rises by 4%, reflecting enhanced flow field regulation. Overall, this study provides cross-scale experimental evidence for the environmentally induced strengthening mechanism of PAM/SA gels and suggests their potential application in deep conformance control.
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Separations
·
2026
·Vol. 13
·期 3
·99
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IF 3.5
Jing Chang,Hang Zhao,Shizhen Liang,Xihao Feng,Jia Xue,Wei Zhao
High-ash coal slime water, characterized by its stable colloidal suspension of fine kaolinite particles, poses a significant challenge in the coal preparation industry because it is hard to achieve efficient solid–liquid separation. While traditional coagulants and flocculants often suffer from limited bridging capabilities and distinct pH sensitivity, novel molecular architectures offer potential solutions. In this study, a star-shaped inorganic–organic hybrid flocculant (Al-PAM) was synthesized via in situ polymerization. Its flocculation performance and interfacial adsorption mechanism on the specifically targeted aluminol basal plane of kaolinite were systematically investigated and compared with Polyaluminum Chloride (PAC), Non-ionic Polyacrylamide (NPAM), and their combination (PAC + NPAM). Settling tests revealed that Al-PAM exhibited superior performance at a significantly lower dosage (10 mg∙L−1) compared to the PAC + NPAM binary reagent system. It achieved a rapid initial settling velocity and reduced the supernatant turbidity to 48.45 NTU, while maintaining a near-neutral pH favorable for water recycling. Furthermore, Quartz Crystal Microbalance with Dissipation (QCM-D) monitoring confirmed that Al-PAM forms a thick, viscoelastic, and irreversible adsorption layer on the Al2O3substrate. The dissipation shifts (ΔD) revealed that the star-shaped architecture promotes distinct bridging and electrostatic adsorption, overcoming the limitation of linear polymers. This work elucidates the specific contribution of the alumina-surface interaction with flocculants and proposes an efficient strategy for treating refractory coal slime water.
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ENERGY & FUELS
·
2026
·
IF 6
Tianle Li,Liangliang Yan,Jingyi Yu,Yuxiu An
The deployment of amphiphilic nanomaterials in reservoir environments is often hampered by the stability-activity trade-off, where physical desorption leads to structural failure. To overcome this, we developed a covalent core–shell nanohybrid (DNM) by anchoring a sulfonate-rich AM/AMPS copolymer shell onto a rigid KH570-modified silica core via in situ polymerization. This covalent grafting strategy effectively mitigates the shell detachment issues prevalent in physically adsorbed systems. The resulting “rigid-core/flexible-shell” architecture exhibits a salinity-adaptive behavior, achieving optimal dispersion at ∼20,000 mg/L TDS through a balance of electrostatic and Hofmeister effects. While the interfacial tension reduction is moderate (∼0.29 mN/m), the DNM significantly alters rock wettability from oil-wet (119.3°) to water-wet (41.3°) via a structural wedge mechanism. Dynamic core flooding demonstrated a 35% enhancement in oil recovery, driven by the synergistic coupling of the “Log-jamming” effect for mobility control and interfacial stripping for oil mobilization. These findings confirm that covalent hybridization provides a robust molecular solution for mobilizing residual oil in moderate-salinity reservoirs.
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