CHEMICAL ENGINEERING SCIENCE
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2026
·
IF 5.1
Shichong Guo,Yibing Wang,Limei Dong,Zhining Wang,Hongwei Ge,Yanshuo Li,Mutai Bao,Yiming Li
Oil-adsorbing materials with photothermal conversion serves as an important strategy for viscous crude oil spill cleanup, yet the application of conventional photothermal adsorbents is greatly limited by the instability of natural light irradiation. In this study, a novel type of aerogel-based adsorbent with efficient photothermal conversion and energy storage ability (Paraffin@PDMS/Fe/GCA) was fabricated through simple ambient drying strategy. Paraffin@PDMS/Fe/GCA was constructed by natural graphite flakes and cellulose nanofibrils (CNF), and then paraffin was encapsulated as phase change materials (PCM) to realize the energy storge and release. The complexation between Fe 3+ ions and the surface groups of CNF (–OH and –COOH) contributes to the stability of the 3D structure, which not only enables effective PCM encapsulation, but also resists capillary forces during the ambient drying process. This study achieves the preparation of aerogel-based phase change composites through simple ambient drying. The resulting Paraffin@PDMS/Fe/GCA exhibits remarkable photothermal performance, reaching a steady-state temperature of 77 °C under 100 mW/cm 2 irradiation, and demonstrates a high adsorption capacity for viscous crude oil. Importantly, by releasing the stored heat by paraffin, it can clean up crude oil spills on the low temperature seawater surface (near 0 °C) or under conditions of intermittent sunlight. The crude oil recovery rate of Paraffin@PDMS/Fe/GCA was 1.61 times higher than that of PDMS/Fe/GCA after two cycles of turning on and off the lights. This novel photothermal adsorbent can be produced on a large scale, and avoid the use of expensive photothermal materials, demonstrating unique advantages in the remediation of crude oil spills.
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高影响因子
Science Advances
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2026
·Vol. 12
·期 8
·
IF 13.9
Lei Yu,Shixiong Zhang,Liang Liu,Di Li,Yongli Cai,Chenxin Wu,Lei Hua,Haiyang Li,Dehui Deng,Ping Chen,Zhenfeng Xi,Jianping Guo,Junnian Wei
Directly converting dinitrogen (N 2 ) into valuable nitrogen-containing compounds remains an enduring challenge in chemical synthesis. Here, we report the direct cyanation of aromatic substrates using N 2 and methane (CH 4 ) at atmospheric pressure facilitated by a custom-built, air-free dielectric barrier discharge (DBD) plasma system. A broad range of aromatic compounds, including benzene, were successfully transformed into their corresponding aromatic nitriles. Both experimental and computational evidence suggested that the reaction proceeds primarily via the in situ generation of •CN radicals from N 2 and CH 4 within the plasma zone. Subsequent radical addition to aromatic rings allowed the one-pot formation of aryl nitriles. This approach represents a major advancement in dinitrogen-based organic methodologies, providing an efficient alternative to conventional cyanation methods that heavily rely on lengthy synthetic routes and hazardous cyanide reagents.
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PubMed
高影响因子
Foods
·
2026
·Vol. 15
·期 4
·753
·
IF 6
Meilin Zhao,Zhihua Huang,Shuoyang Sun,Quan Gan,Shuang Wu,Xiqi Hu,Delei Xu,Pedro Laborda,Bao Tang,Lingtian Wu
Phytophthora capsici , an invasive oomycete pathogen causing blight in crops like cucurbits, tomatoes, and peppers, has led to significant economic losses. Due to the limitations of conventional control methods, research has focused on effective and eco-friendly biocontrol alternatives. The bacterial strain LT-22, identified as Bacillus velezensis , exhibits broad-spectrum antifungal activity and plant growth-promoting potential. This study investigated the biocontrol efficacy of volatile organic compounds (VOCs) from strain LT-22. LT-22 VOCs strongly inhibited P. capsici PC153 growth in vitro and reduced disease symptoms in pepper fruits. Microscopic observations showed that LT-22 VOCs caused significant morphological changes in P. capsici PC153 mycelium by disrupting cell wall and membrane integrity. The treatment increased malondialdehyde (MDA) levels and reduced cellulose content, further indicating that LT-22 VOCs compromise cell integrity to exert antifungal effects. Furthermore, 2-methylbutanoic acid was identified as the primary antifungal VOC, with an EC 50 value of 0.095 µL/mL against P. capsici PC153, lower than the reported plant-derived compounds. Together, these results indicate that strain LT-22 and its VOCs, especially 2-methylbutanoic acid, have significant potential as an effective biocontrol agent for managing Phytophthora blight.
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高影响因子
Chemistry-Switzerland
·
2025
·Vol. 7
·期 6
·173
·
IF 2.4
Yi Wang,Fuqiong Wang,Xiaoyang Zhao,Zhipeng Zhang,Yue Huang,Hua Zheng,Xiaohong Cheng,Xinrui Miao
4,6-Diamino-1,3,5-triazine (DT) derivatives typically exhibit excellent liquid crystal properties, attracting numerous researchers interested in enhancing their performance. In this paper, two DT molecules (DT−10 and DT−12) are employed to elucidate the effects of their backbone length and number of branches in the tail chains on self-assembled nanostructures using scanning tunneling microscopy (STM) at the 1-octanoic acid/highly ordered pyrolytic graphite interface, compared to our previous report (2TDT−n,n= 10,12,16,18). DT−10 features a short backbone and a trialkoxy chain tail, whereas DT−12 possesses a long backbone and bifurcated chain tails. STM results reveal that DT−10 assembles into a cross-shaped nanostructure with DT head groups arranged in a head-to-head configuration stabilized by a pair of N–H···N hydrogen bindings (HBs). In contrast, DT−12 assembles into a two-row linear pattern, where DT head groups exhibit a side-by-side arrangement mediated by a pair of N–H···N HBs. Comparison with our previous findings indicates that although variations in backbone length and tail chain branching can modulate the nanostructural features of DT derivatives, the chain length of DT molecules emerges as a pivotal factor governing their assembly architecture.
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高影响因子
JOURNAL OF SURFACTANTS AND DETERGENTS
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2025
·
IF 1.8
Sihang Ma,Yuanyuan Wang,Qingfeng Hou,Yifeng Liu,Xiaoling Yi,Zhuoyan Zhu,Zhidong Chang
CO 2 -responsive switchable microemulsions have attracted significant attention due to their substantial potential in organic synthesis, drug delivery, and nanomaterial preparation. This study presents a microemulsion system composed of N ′-dodecyl- N , N -dimethyl acetamidine, 1-hexanol, brine, and tetradecane. The phase behavior of the microemulsion system was systematically investigated through a salinity scan to access its salinity dependence, while the solubilization ratios were also evaluated. Furthermore, the microstructural characteristics of the microemulsion system were examined using dynamic light scattering, small-angle X-ray scattering, and interfacial tension measurements. A transition from Winsor I to Winsor III, and subsequently to Winsor II, was observed in the alkyl acetamidine surfactant-based microemulsion as salinity increased, with the smallest domain size and most ordered microstructure occurring near the optimal salinity. Notably, the three-phase microemulsion system demonstrated the ability to reversibly switch between emulsification and demulsification upon CO 2 or N 2 injection, showcasing its dynamic responsiveness. This study enhances the understanding of CO 2 -responsive microemulsions and offers potential pathways for sustainable chemical processes. Graphical
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2026
·
IF 8.7
Tingting Yu,Xiaolin Qiu,Mónica Delgado,Ana Lázaro,Yang Hu
Low-temperature phase change material emulsions (PCMEs) are excellent thermal storage media but have environmental and toxicity issues due to poorly degradable synthetic surfactants; single-component biopolymer systems lack stability, low-temperature Pickering emulsion research is scarce, protein-polysaccharide composite stabilizers in PCMEs are unreported, and Boron Nitride (BN) -biopolymer synergistic effects on supercooling remain unexplored. This study aims to develop an environmentally friendly, high-performance, low-temperature Pickering phase change material emulsion to simultaneously optimize stability, environmental compatibility, and thermal performance. This study proposes substituting traditional emulsifiers with self-assembled sodium caseinate (SC)-xanthan gum (XG) nanocomposites. Phase change emulsions were prepared by high-speed homogenization, and boron nitride was added to synergistically reduce supercooling and improve heat transfer. The SC–XG complexes adsorb at n-tetradecane/water interfaces, forming a viscoelastic interfacial network that enhances droplet stability and restricts coalescence. Thermal analysis re v ealed that, at 0.5% ( w / v ) XG, the 50 vol% n-tetradecane PCME droplets are uniform and kinetically stable, delivering a latent heat of 89.5 J g −1 . Adding only 0.75 wt% BN induces heterogeneous nucleation, cuts supercooling from 7.8 °C to 0.24 °C, and boosts thermal conductivity. This study proposes a novel protein-polysaccharide-based technical pathway for constructing green and sustainable low-temperature thermal storage materials, while also synergistically regulating the crystallization behavior and heat transfer performance of the emulsion through BN. This study provides both a theoretical foundation and a green technical solution for designing stable and efficient phase change material emulsions for thermal energy storage.
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高影响因子
Processes
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2026
·Vol. 14
·期 2
·223
·
IF 2.8
Tianran Kong,Annan Zhao,Yinghui Zhang,Zongxuan Bai,Hongying Lü,Kaixuan Yang
Efficient conversion of biomass-based platform molecules into high-value derivatives is recognized as one formidable challenge in biomass upgrading. In this work, a one-pot deep eutectic solvents-assisted solvothermal method was developed for the modification of the commercial Pt/C catalysts by introducing a secondary metal (M = Sn, Bi, Ge, Sb, Pb). The structural and electronic properties of the catalysts were precisely tuned. Among the screened metals, the addition of Sn yielded the most significant improvement in catalytic activity. The optimized PtSn0.5/C-140 catalyst achieved superior furfural (FAL) conversion and furfuryl alcohol (FOL) selectivity under mild conditions (20 °C, 2 MPa H2). Comprehensive characterizations, including XRD, HRTEM, XPS, and H2-TPD, confirmed the formation of Pt-Sn solid-solution phase. Furthermore, Characterization and reaction results revealed that the electronic and geometric effects induced by Sn modulated Pt active sites, significantly enhancing the adsorption of the active H species. Additionally, the SnOxspecies adjacent to the Pt-Sn sites served as hydrogen spillover acceptors, further accelerating the hydrogenation process. The synergy between the Pt-Sn solid-solution phase and SnOxspecies is identified as the origin of the superior performance at room temperature. These findings provide a new strategy for the design of high-performance biomass conversion catalysts by upgrading commercial noble metal catalysts.
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高影响因子
Journal of Cleaner Production
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2023
·
IF 11.1
Jia Wang,Li'ao Wang,Yujie Li
This paper studied volatile methyl siloxane (VMS) separation from biogas using a hollow fiber membrane contactor (HFMC). The effects of operating parameters such as temperature, gas velocity , and absorbent velocity of HFMC on typical VMS (hexamethyldisiloxane: L2, octamethylcyclotetrasiloxane: D4, and decamethylcyclopentasiloxane: D5) separation were investigated, and the absorption efficiencies of three absorbents (tetradecane, propylene carbonate: PC, and selexol) were evaluated. The results of the study showed that the VMS absorption efficiency of the three solvents decreased with increasing absorbent temperature from 15 °C to 35 °C. At 15 °C, the VMS removal rates of tetradecane, PC, and selexol ranged from 95.8% to 99.9%, 85.5%–92.6%, and 73.1%–92.8%, respectively. Increasing the gas velocity reduced the removal efficiency of VMS, especially L2. When the gas velocity increased from 300 to 1100 mL/min, the L2 removal rates of selexol, PC, and tetradecane decreased by 19.9%, 28.4%, and 1.9%, respectively. Increasing the absorbent velocity facilitated VMS removal. When the absorbent velocity went up to 250 mL/min, the L2 removal efficiencies of tetradecane, selexol, and PC increased to 99.8%, 74.0%, and 77.2%, respectively. Meanwhile, the D4 and D5 removal rates of the three absorbents exceeded 88%. Additionally, absorbent recycling is important to reduce contamination and use costs. Tetradecane performed excellently with more than 82% VMS removal when the loading of L2, D4, and D5 were 5.4, 21.4, and 21.4 mg/mL, respectively. The VMS content of the three absorbents was almost zero at 100 min of regeneration at 120 °C.
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Journal of Water Process Engineering
·
2023
·
IF 7
Qian Xu,Xiujun Wang,Weixin Hu,Jian Zhang,Ming Duan,Shenwen Fang
Cationic polyamide-amine dendrimer can promote the clarification performance of nonionic block polyether water clarifier for treating produced water from heavy oil field, but the reason is lack of study. In this paper, a cationic polyamide-amine dendrimer TA which can effectively improve the oil removal speed of nonionic polyether DMEA-PE and reduce the onset temperature of DMEA-PE clarification performance was prepared, and the reason was explored from both thermodynamic and dynamic aspects by studying the effect of TA on the hydrophilic-lipophilic deviation (HLD) equation and oil-water interface behavior of DMEA-PE. The research results showed that TA moved up the HLD vs T curve of DMEA-PE and decreased its temperature corresponding HLD = 0, which was a favor of decrease in onset temperature of DMEA-PE clarification performance. TA had no effect on the DMEA-PE's capacity of oil-water interface adsorption and decreasing oil-water interface film strength. However, TA can reduce the electronegativity of oil droplet in water and enhance the oil droplets coalescence, hence the oil removal speed and efficiency of DMEA-PE were enhanced. This is the first time that HLD concept was used to investigate the action mechanism of composite water clarifier and the results are useful for the water clarifier design.
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高影响因子
Catalysts
·
2023
·Vol. 13
·期 4
·747
·
IF 3.9
Yan Gao,Yu Chen,Cuiying Wang,Aiping Yin,Hailong Li,Jianshe Zhao
In this work, the highly active polyoxometalate (PW2Mo2) with Venturello structure and its corresponding catalyst were applied in catalytic desulfurization for the first time. PW2Mo2as an active component was effectively encapsulated in hollow periodic mesoporous organosilica (HPMOS) to form the nanoreactor PW2Mo2@HPMOS, where the central cavity and mesoporous shell facilitate mass transfer and both provide a stable place to react with organic sulfides. Desulfurization test results show that the hollow nanoreactor PW2Mo2@HPMOS can almost remove four sulfides simultaneously from diesel in 2 h under mild conditions. Besides, the nanocatalyst PW2Mo2@HPMOS can be reused and recycled for at least seven consecutive tests without any noticeable loss in performance. With the rapid development of the economy, the massive use of sulfur-containing fuel has a huge impact on the global climate. After combustion of sulfur-containing fuel, the realized SOXis an important inducement of the formation of acid rain, and the realized sulfur particle is also a major source of haze. Therefore, removing sulfur compounds from fuel is an important issue that needs to be solved immediately.Keywords:polyoxometalates;hollow periodic mesoporous organosilica;nanoreactor;desulfurization;chemical process
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ACS Omega
·
2023
·
IF 4.1
Zhuoyi Ren,Qibin Yuan,Chunyan Dai,Linhua Zhu
Oxidative desulfurization (ODS) has been proved to be an efficient strategy for the removal of aromatic sulfur compounds from diesel oils, which are one of the main sources of air pollution. Heteropolyacid catalysts are highly active species for ODS, but the promotion of their catalytic activity and clarification of their catalytic mechanism remain an important issue. Herein, a series of novel imidazole-based heteropolyacid catalysts are prepared by a one-pot method for multiphase deep ODS of fuel with hydrogen peroxide as an oxidant. The experimental results show that the desulfurization performance of the prepared imidazole-based heteropolyacid catalysts is high up to 99.9% under mild conditions. The catalyst also possesses excellent recovery performance, and the desulfurization activity remains at 97.7% after being recycled seven times. Furthermore, density functional theory calculation is first employed to clarify the origin of the high desulfurization activity, and the results show that with the imidazole-based heteropolyacid (HPW-VIM) as the catalyst, the energy barrier is much lower than that with phosphotungstic acid (HPW) as the catalyst.
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高影响因子
Journal of Water Process Engineering
·
2023
·
IF 7
Qiang Liang,Xiujun Wang,Xiaoyue Zhang,Bo Jing,Ming Duan,Shenwen Fang
The branched amphiphilic copolymer of N-(3-dimethylaminopropyl) methacrylamide and polyether macromonomer (DA) can gather a large number of oil droplets and bubbles together to form oil aerated flocs, and cooperate with air-flotation cyclone separation device to achieve efficient oil-water separation. In this paper, the effects of DA and linear cationic flocculant polymethylacryloxyethyl trimethylammonium chloride (PDMC) on interaction between dispersed phases in produced water were studied from the microscopic point of view, and the reason why oil aerated flocs can be formed under the action of DA was analyzed. Firstly, the aggregation behaviors of the dispersed phases (including oil droplets and bubbles) in water were studied intuitively by microfluidic experiment. Then, the interaction between oil droplets and the interaction between oil droplet and bubble were studied by optical tweezers and oil-coated bubbles experiments, respectively. The experimental results showed that both the efficiencies of oil droplets coalescence and oil droplet-bubble adhesion of DA were 5 times higher than that of PDMC at concentration of 500 mg/L. DA can enhance the attraction force between oil droplets while PDMC cannot. The film drainage time of oil droplet-bubble adhesion of DA was 3 times shorter than that of PDMC. The increasing temperature and salinity had the negative effect on the film drainage oil droplet-bubble adhesion of DA. In addition, the type of attraction force between oil droplets under action of DA still needs analysis and the generation reason needs molecular dynamics simulation study. The research results of this paper can give a guide to the development of DA type flocculants.
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