Polymers
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2026
·Vol. 18
·期 4
·468
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IF 5.8
Fengrong Xin,Qing Dong,Yuanwei Pan,Yuxuan Hu,Xiao Feng,Zheng Yang,Yilei He,Dandan Peng,Lu Li,Qun Fang,Zhehong Shen
Bamboo, a fast-growing biomass material with excellent mechanical properties, is widely used in furniture and construction. However, its susceptibility to moisture, cracking, and aging limits its durability. While acrylic resins offer good weather and water resistance, the relationship between resin formulation and the performance of bamboo remains unclear. This study developed a novel water-based styrene–acrylic resin tailored for bamboo, systematically investigating the relationships between resin formulation, coating structure, and performance. Results show that vinyltriethoxysilane-modified styrene–acrylic resin outperforms hydroxypropyl-acrylate-modified and unmodified styrene–acrylic. At a 10% dosage of vinyltriethoxysilane, the Zeta potential reached −24.2 mV, indicating enhanced emulsion stability. The coated bamboo exhibited a water contact angle of 100.56 ± 1.11°, a pencil hardness of 4H, and an adhesion grade of 1, significantly improving its waterproofing, hardness, and bonding strength. UV aging tests confirmed improved anti-aging performance, with optimal results at 10% dosage: color difference (ΔE) of 3.00 ± 1.81, dimensional change rate of 0.76 ± 0.22%, and gloss retention of 78%. This study also pioneers research on contact angle hysteresis for coated bamboo. The findings provide theoretical and technical support for developing high-performance bamboo coatings and durable outdoor bamboo products.
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Inorganic Chemistry Frontiers
·
2026
·
IF 6.2
Chun-Mu Guo,Zhan Liu,An-Kang Jiang,Ming-Hui Sun,Bo Ye,Jia-Min Lyu,Ke Min,Xiao-Yu Yang,Ke Lyu,Xiaoyun Li,Yu Li,Li-Hua Chen,Bao-Lian Su
The catalytic efficiency of single-component cobalt catalysts (featuring exclusively Co-based active sites) for styrene epoxidation is significantly constrained by mass-transport limitations inherent to the micropores of conventional supports. To overcome this, we devise a one-stone-two-birds strategy synthesizing hierarchical CoSAPO-34 using a core-shell ZIF-67@SiO2 composite as a combined Co/Si source and template. This approach simultaneously creates (i) atomically dispersed, high-loading Co(II) sites within the framework and (ii) a hierarchical pore architecture (micro/meso/macro). The introduced meso/macropores dramatically enhance reactant accessibility to the active sites. This synergistic integration yields exceptional performance in aerobic styrene epoxidation: achieving 95.8% conversion with 70.0% selectivity toward styrene oxide, corresponding to a 67.1% yield in only 4 h at 90 °C. Remarkably, this represents the highest styrene oxide yield reported for a catalyst based on single-component cobalt active sites using air as the sole oxidant, and it was achieved within a short reaction time. This strategy provides a novel blueprint for designing efficient catalysts demanding maximized active-site accessibility.
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CHINESE JOURNAL OF CATALYSIS
·
2026
·
IF 17.2
Fuhao Yin,Qianyu Zhang,Mao Xu,Shupeng Wei,Yi Li,Pengzuo Chen,Yanying Zhao,Benxia Li
Achieving efficient photocatalytic CO 2 reduction using H 2 O as a hydrogen source requires the synergistic optimization of both charge and proton transfer between CO 2 reduction and H 2 O oxidation half-reactions. However, conventional studies mostly focused on enhancing these half-reactions independently, overlooking the intrinsic interdependence between them. Herein, this work develops a photothermal catalyst (denoted as Pd 1+c /3DOM-In 2 O 3 ) through engineering synergistic Pd single atoms (Pd 1 ) and Pd clusters (Pd c ) in three-dimensional ordered macroporous (3DOM) In 2 O 3 framework. The mechanistic study reveals that the coexistence of Pd single atoms and clusters not only offers synergistic active sites to promote the reaction of CO 2 and H 2 O, but also substantially improves the separation and transfer efficiencies of photogenerated electrons and holes. The Pd clusters facilitate H 2 O dissociation to ensure an adequate supply of active hydrogen species as well as synergistically enhance the adsorption and activation of CO 2 at Pd single-atom sites. Furthermore, the enhanced photoabsorption in visible and near-infrared regions, attributed to the localized surface plasmon resonance of Pd clusters, leads to a significant increase in catalyst temperature under simulated solar irradiation. The integration of photocatalysis with the photothermal effect affords an intensified driving force for the selective conversion of CO 2 and H 2 O into CO, thereby accelerating the reaction kinetics of the overall photocatalytic CO 2 reduction process. As a result, the Pd 1+c /3DOM-In 2 O 3 catalyst exhibits excellent performance for solar-driven CO 2 reduction with H 2 O vapor, achieving a remarkable CO production rate of 192.52 μmol g –1 h –1 , which is 19.8-fold and 12.2-fold higher than those of pure 3DOM-In 2 O 3 and Pd 1 /3DOM-In 2 O 3 , respectively. This study provides valuable insights into the synergistic effect of metal single atoms and clusters toward both efficient photocatalysis and photothermal effect for solar-driven CO 2 reduction.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Zhijie Zhu,Zhongqin Liao,Jie Hong,Chengliang Feng,Yu Tian,Senling Wang,Haiyan Xu
Structural colored fabrics assembled from periodic crystalline structures have intrinsic advantages in construction of ecological fabrics due to their inherently high-brightness and anti-photo bleaching properties. However, due to the weak interfacial interactions between microspheres, there exists a critical trade-off when attempting to incorporate additional functionalities into the structural color system, where the enhancement in function may inevitably sacrifice the original color quality. Herein, we proposed a facile method for the construction of hydrophobic structural colored fabric (HSCF) by introducing low surface energy silane chains on the surface of colloidal microspheres. The primary hydrophilic fabric transformed into hydrophobic one after spray-coating treatment. As a result, the structural colored fabrics showed static water contact angles greater than 150°, as well as saturated colors. Meanwhile, thanks to the maintained porous structure, the fabrics retained softness and breathability. Furthermore, by taking advantage of this easy-to-perform strategy, a roll-to-roll HSCF with uniform and vivid coloration was successfully prepared, showcasing industrial potential for large-scale manufacturing.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2026
·
IF 3.9
Li Mei,Qian Wang,Yao Yao,Xiaolong Fang,Ziwen Li,Chao Liu,Ganggang Chang,Xiaoyu Yang
Tandem catalysis can enhance the reaction efficiency and selectivity while reducing separation and purification steps, thus improving the development of “green chemistry”. The tandem synthesis of cyclic carbonates (CCs) from olefins and CO2 is becoming one of the most promising strategies; however, designing a multifunctional catalyst with multiple sites and fast mass transfer channels to overcome mass transfer resistance at different sites remains a challenge. In this work, we controllably synthesized a bulk and nanosheet (NS) structure of Ni-BDC-NH2 (Ni-BDC-NH2 NS) via a solvent regulation strategy and successfully immobilized Ag+ in Ni-BDC-NH2 NS to form Ag+@Ni-BDC-NH2 NS, which integrated highly exposed, synergistic acid (Ag+) and base (−NH2) active sites, along with rapid mass transfer channels. Benefiting from these synergistic effects and structural advantages, Ag+@Ni-BDC-NH2 NS efficiently catalyzed one-pot synthesis of CCs from olefins and CO2, achieving 99% conversion of styrene and 51% selectivity for styrene carbonate (SC) under optimal conditions, which was significantly higher than that of contrast catalysts lacking Ag+ or –NH2 (SC selectivity <30%). Based on experiments, a feasible mechanism was proposed, in which the Lewis acid sites (Ag+) catalyzed olefin epoxidation, while the Lewis base sites (−NH2) and acid sites (Ag+) synergistically catalyzed the cycloaddition reaction of CO2 and epoxides. Additionally, the catalytic performance and structural stability were maintained even after five successive recycling tests.
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PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
·
2026
·Vol. 123
·期 12
·e2531153123
·
IF 9.5
Keyu Chen,Yu Deng,Tianming Hu,Jichun Li,Xin-Yu Huang,Chengcheng Zhu,Honggang Chen,Meihua Chen,Limin Wu,Yonghui Deng,Wenhe Xie
Periodic porous structures with interconnected pore channels and high specific surface area are widely spread in natural world. These structures guarantee rapid mass transportation and efficient biochemical reactions within organisms, thereby satisfying the requirements of complex life activities. Inspired by the periodic porous membrane and breathing process of the mammalian respiratory system, a steady nonequilibrium chemical sensing process is established to achieve high-accuracy gas discrimination based on artificial periodic porous structures consisting of metal oxide semiconductors and pulse heating (PH) technique. Owing to its highly accessible mesopores and enormous solid–gas interfaces, periodic mesoporous tin oxide (P-mSnO2) facilitates gas diffusion during PH cycles and enhances the catalytic reaction between gas molecules and P-mSnO2. As a result, the P-mSnO2 based sensor exhibits stable and enhanced overshoot peaks in gas sensing response curves, thus achieving superior discrimination accuracy (99.8%) for six gases under the assistance of convolutional neural network (CNN). Furthermore, the mechanism underlying the distinct shapes of the gas response curves is uncovered, revealing that gas adsorption capacity, gas diffusion coefficient, catalytic reaction barrier, and transferred electron numbers are crucial factors. This work lays the foundation for the development of single-sensor artificial olfactory intelligence and the exploration of periodic porous structures in diverse frontier fields.
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ANALYTICAL CHEMISTRY
·
2026
·
IF 7.3
Peiran Song,Huaiwen Cang,Zhihao Zhang,Linlin Jiang,Tianmin Guan,Yong Luan,Weiguo Wang,Wei Huang,Lei Hua,Haiyang Li
Photoionization ion mobility spectrometry (PIMS) hyphenated with gas chromatography (GC) exhibits outstanding selectivity and high sensitivity in the detection of trace volatile organic compounds (VOCs). Its analytical performance is considerably affected by the interface between the GC and the ionization chamber of the PIMS. The sensitivity of the PIMS is reliant on the overlap of photoionization optical fields with the effluent from the GC, which is also affected by the gas flow in the ion mobility spectrometer. In this work, a computational model based on multiphysics dynamic convolution has been developed to evaluate the spatial concentration distribution of sample gas on the photoionization yield of PIMS. The simulation results indicate that lateral injection of GC capillary column into the gas flow of the ion mobility spectrometer could enhance the sensitivity by increasing the overlap of effluent and the VUV light in the ionization region of PIMS. The optimal capillary insert depth was increased when decreasing the carrier gas flow rate, which was confirmed by numerical simulations and experimental measurements. The optimal insert depth was 7.5 mm (the central axis of the ionization source) under conditions of a carrier gas flow rate of 15 mL·min–1, the limit of detection for aromatic compounds was reached 2.5 ppbv, achieving a 4-fold improvement of sensitivity over zero insertion. The GC-PIMS was tested to assess the VOCs emissions from spray-coated surfaces, and trace levels of toluene (45 μg·m–3) and xylene (60 μg·m–3) were still detectable even 14 days later, which highlights the potential of the GC-PIMS apparatus for monitoring trace environmental pollutants.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2026
·
IF 3.9
Xinyu Lv,Peng Wei,Xueying Wang,Hui Sun
In situ emulsification is a promising enhanced oil recovery technique but faces challenges including environmental concerns and high operational costs. To address this, we developed amphiphilic nitrogen-doped carbon dots (NCDs) via a facile one-pot synthesis. The NCDs exhibit high interfacial activity and undergo a three-step self-assembly with endogenous naphthenic acids in crude oil─via hydrophobicity-driven diffusion, electrostatic adsorption, and interfacial jamming─to form a rigid film with ultralow interfacial tension (∼0.66 mN/m). The resulting emulsion shows a bridged network structure and high stability. Microfluidic experiments reveal that stable oil-in-water emulsions form over a wide concentration range, with three distinct flow regimes (squeezing, dripping, and jetting) governed by capillary number and droplet size scaling as (D/Dh) ∝ Cac–1.5. The emulsion also exhibits fully reversible, CO2-responsive demulsification with minimal NCDs loss over cycles. Under simulated reservoir conditions, NCDs maintain ultralow tension and high elasticity in heavy oil, show good thermal and salinity stability, and enhance oil recovery by 33.45% over water flooding, demonstrating strong field potential. This work offers a sustainable strategy for developing efficient oilfield chemicals with lower cost and environmental impact.
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ACS Sustainable Chemistry & Engineering
·
2026
·
IF 7.6
Song Li,Yiqiu Tan,Wei Luo,Huining Xu,Meizhao Han,Jilu Li,Shenqing Xiao
Asphalt materials release volatile organic compounds (VOCs) during construction, adversely impacting worker health and the environment. This study evaluated an oil-absorbing organogel as a VOC inhibitor to reduce VOC emissions along with its effects on the mechanical properties, environmental impact, and cost of asphalt materials. The oil-absorbing organogel was synthesized via addition copolymerization reaction of stearyl methacrylate (SMAL), ethylene glycol dimethacrylate (EGDMA), and styrene utilizing C=C bonds. The addition of the oil-absorbing organogel reduced VOC emissions from the asphalt mixture by up to 30%. On the other hand, the oil-absorbing organogel increased the deformation resistance and antifatigue performance by up to 85% and 25.2% while showing a slight decrease of the low-temperature performance at −6 °C below. In terms of the environmental influence, the asphalt mixture with 5% oil-absorbing organogel showed the biggest CO2, global warming potential (GWP), and acidification potential (AP), which were 12.2%,13.1%, and 6.2% higher than those without oil-absorbing organogel. The results of cost-benefit analysis of AC (asphalt mixture)-1, AC-3, and AC-5 were 20.5, 11.8, and 16.0, respectively. This indicated that the presence of oil-absorbing organogel has an obvious benefit. An appropriate oil-absorbing organogel enabled us to balance the VOC reduction, road performance, and environmental and economic influence. These findings provide feasible insight into promoting the use of VOC reduction materials in road engineering, balancing the VOC reduction effect, mechanical properties, and environmental and economic influence.
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Small
·
2026
·
IF 11.8
Wenrui Wei,Liang Wu,Xianxia Yuan
Bismuth sulfide (Bi 2 S 3 ) is a promising potassium-ion battery anode candidate due to its high theoretical capacity and cost-effectiveness. However, it experiences severe volume variation and structure collapse during potassiation/depotassiation, leading to inferior cycling stability and rate performance. Herein, a novel stereochemically active lone pairs (SCALP)-oriented strategy integrated with structural engineering is proposed. Guided by density functional theory calculations predicting that controlled lattice distortion can tune SCALP behavior, a rationally designed Bi 2 S 3 anchored within hollow carbon spheres (HCS@Bi 2 S 3 ) is synthesized via controlling sulfidation time. SCALP-oriented approach narrows band gap and strengthens K + adsorption, improving redox reaction kinetics coupled with efficient ion-transport pathways in well-crystallized regions; HCS alleviates volumetric expansion and suppresses potassium-polysulfide dissolution and shuttling. HCS@Bi 2 S 3 -3 delivers high reversible capacity (471.5 mAh g −1 at 200 mA g −1 ), good high-rate long-term cycling stability (147.3 mAh g −1 after 1000 cycles at 10 A g −1 ), and excellent rate capability (128.4 mAh g −1 at 12 A g −1 ). Full cell paired with 3,4,9,10-perylenetetracarboxylic dianhydride cathode delivers exciting cycling stability, indicating the practical applications potential of HCS@Bi 2 S 3 -3. This work highlights SCALP-modulation as a fundamental strategy optimizing electronic properties, while HCS mitigates volume changes, offering a new pathway for developing fast and stable potassium storage anodes using metal chalcogenides.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Weiyun Tian,Zhichao Yang,Jinbiao Yang,Xiaojuan Wang,Hanbing Wu,Yu Wang,Wei Li,Xingxiang Zhang,Xiao Ma,Na Han
A novel hybrid-shell phase change materials (PCMs) was prepared via Pickering emulsion polymerization, exhibiting high thermal stability while maintaining a high latent heat. Using n-octadecane as the core, microencapsulated phase change materials (MicroPCMs) with PMMA@PS@SiO 2 hybrid shells were designed. The MicroPCMs achieved an enthalpy of 119.2 J/g, reaching 99.3% of the theoretical value, with an energy storage efficiency of 66.1% and a heat storage capacity of 99.8%. The temperature corresponding to 5% weight loss ( T 5% ) increased by 83 ℃, and the leakage rate remained as low as 5.6% after 200 cycles. The formation of the hybrid shell significantly enhanced the thermal stability and cycling durability of the MicroPCMs, while maintaining a high heat storage capacity and effectively addressing the leakage and cycling instability commonly existing in PCMs. Moreover, the surface-modified SiO 2 acted as a stabilizer to construct the Pickering emulsion template, enabling a green fabrication process. Finally, flexible PCM films were fabricated by melt blending and extrusion of MicroPCMs and poly(vinyl alcohol) (PVA), exhibiting excellent thermal management performance. Overall, the MicroPCMs demonstrate significant potential, with particular relevance and advantages in high-temperature processing areas.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Jintao Tong,Shihao Zang,Xiangyu Dou,Xingyue Chen,Chen Chen,Zhe Xu,Cheng Ma,Jianbin Huang
In colloidal mixtures, different particle types coexist in the same suspension environment yet exhibit intrinsically distinct surface chemistries. Here we present surface-dictated sorting rules that enable selective assembly among mixed colloids. Using seven types of particles of equal size (∼2 μm) representing common families of negatively charged stable colloids, including inorganic spheres bearing native surface hydroxyls groups (M–OH, e.g. SiO 2 , TiO 2 ) or grafted carboxyl groups, organic polymer particles synthesized by emulsion polymerization (sulfonated PS and PMMA, carboxylated PS), and an organosilane-derived colloid with silanol surface (TPM), we identify three general strategies: (1) pH and solvent dielectric tuning, suppresses the dissociation of weakly acidic surface groups, driving particles with near-neutral M–OH or –COOH sites to clusterize; (2) Small molecules with multiple hydrogen-bonding sites (i.e., urea), reorganize interfacial hydrogen-bond networks, selectively destabilizing the surfaces of hydroxyl-rich inorganic particles; (3) Depletion-driven assembly with Pluronic surfactants. Upon selective adsorption onto hydrophobic particles (e.g., polystyrene), Pluronic copolymers form a stable surface brush layer, increasing the effective radius of the particles. This expanded depletion zone creates greater overlap as particles approach, resulting in enhanced depletion attraction. When combined with disparities in intrinsic surface potential, this brush-mediated interaction yields distinct overall potentials between hydrophobic and hydrophilic particles, thereby driving the preferential assembly of the hydrophobic ones. Applying this strategy to SiO 2 /Pt Janus particles further induces neutral charged Pt-facet clustering under depletion, yielding oriented clusters and chain-like assemblies.
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危险品化学品经营许可证（带存储）