ACS Biomaterials Science & Engineering
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2025
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IF 5.5
Chengge Fang,Ling Ma,Timson Chen,Ya Chen,Zhizhen Li,Xiaodong Yan,Jing Wang
Metal polyphenolic networks (MPNs) are becoming more and more attractive for nontoxic hair dyeing, but their coloring effect is not satisfactory because of the limited interfacial deposition and the absence of internal deposition. Moreover, there is a lack of understanding of the driving factors of the interfacial deposition of MPNs on hair. Herein, we develop a simple yet efficient strategy that transforms disulfide bonds of the hair into thiol groups by thioglycolic acid (TGA) to highly enhance the coloring effect of MPNs at a low temperature. The highly reactive thiol groups react with Fe2+ to form Fe–S bonds, greatly facilitating the interfacial and internal deposition of MPNs and thus resulting in rapid coloration and high darkness. Moreover, the TGA-assisted MPNs-dyed (TGA/MPN) hair shows high resistance to washing with a shampoo. Further, it is found that the connection of thiol groups to the MPNs endows the TGA/MPN hair with similar mechanical and structural properties to the natural white hair and even enables simultaneous hair dyeing and perming. This study offers a novel universal strategy for hair dyeing and permeation with MPNs.
研究领域:
材料科学
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生物学
·
化学
✓ 已验证
DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2017
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IF 5.951
Qiangqiang Zhu,Chun Shen,Jie Wang,Tianwei Tan
The upgrade of acetone–butanol–ethanol (ABE) mixture from biomass to high-value biofuels has aroused increasing attention. However, a reported heterogeneous catalyst, metal-containing MgAl-hydrotalcite (HT), is confronted with a serious water-resistance problem due to an inherent memory effect of HT materials. With the aim of exploring catalysts with improved water-resistance, metal-containing MgO–SiO2 catalysts were synthesized and evaluated. An investigation on the effect of metal type including Ni, Cu, Fe, Zn, and Co, metal loading, and reaction temperature on catalytic performance indicates that the 10 wt % Ni–MgO–SiO2 catalyst provides the best catalytic performance, giving a yield of 81.5% to C5–C15 ketones and alcohols at 240 °C. As expected, the catalyst exhibits an excellent water-resistance. It could tolerate up to 3 wt % water, which was much higher than 0.5 wt % over that of Cu- or Pd-HT as reported. Results from XRD and 29Si MAS NMR analyses indicate that the high water-resistance could be ascribed to the more stable structure of magnesium silicates formed in the catalyst than HT materials. For a further study of the effect of catalyst property on catalytic performance, 10 wt % Ni–SiO2, 10 wt % Ni–MgO, and 10 wt % Ni–MgO–SiO2 catalysts were investigated and characterized. Results from CO2-TPD, pyridine-IR, and NH3-TPD analyses reveal that the catalytic performance is significantly affected by an acid–base property. Obtaining a high catalytic performance necessitates a cooperation of enough acidic sites and basic sites.
研究领域:
催化化学
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可再生资源与环境科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS A-GENERAL
·
2021
·
IF 5.706
Jiaorong Yan,Li Wang,Yun Guo,Yanglong Guo,Qiguang Dai,Wangcheng Zhan
Cobalt-doped alumina nanosheets were prepared by dynamic hydrothermal method, and then the precious metal Ru or Pd was loaded and investigated for catalytic combustion of propane. Cobalt doping imparted the prominent redox ability to irreducible alumina nanosheets with superior thermal stability and established the strong metal-support interaction and easy activation of gaseous oxygen. Comparative investigation between Ru and Pd supported on Co-doped Al 2 O 3 nanosheets suggested that Ru based catalysts presented a higher activity and water-resistance while the preferable sintering-resistance and oxygen-tolerance were observed on Pd based catalysts. Unexpectedly, the Pd/CoANS-800 catalysts exhibited a re-dispersion of PdO x at high temperature and re-activation for propane oxidation . Ru based catalysts were more tolerant to Cl species from the metal precursor, and the presence of H 2 O could accelerate the removal of the residual Cl species from the catalyst surface especially Pd based catalysts, which led to the promotion of catalytic activity.
研究领域:
材料科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
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IF 9.4
Dengtai Wang,Luxiang Jiang,Mingjiao Tian,Jing Liu,Yi Zhan,Xiaoxiao Li,Zuwu Wang,Chi He
Developing cost-effective monolith catalyst with superior low-temperature activity is critical for oxidative efficacious removal of industrial volatile organic compounds (VOCs). However, the complexity of the industrial flue gas conditions demands the need for high moisture tolerance, which is challenging. Herein, CoMn–Metal Organic Framework (CoMn–MOF) was in situ grown on Ni foam (NiF) at room temperature to synthesize the cost-effective monolith catalyst. The optimized catalyst, Co1Mn1/NiF, exhibited excellent performance in toluene oxidation ( T 90 = 239 °C) due to the substitution of manganese into the cobalt lattice. This substitution weakened the Co–O bond strength, creating more oxygen vacancies and increasing the active oxygen species content. Additionally, experimentally and computationally evidence revealed that the mutual inhibiting effect of three typical aromatic hydrocarbons (benzene, toluene and m–xylene) over the Co1Mn1/NiF catalyst was attributed to the competitive adsorption occurring on the active site. Furthermore, the Co1Mn1/NiF catalyst also presents outstanding water resistance, particularly at a concentration of 3 vol%, where the activity is even enhanced. This was attributed to the lower water adsorption and dissociation energy derived from the interaction between the bimetals. Results demonstrate that the dissociation of water vapor enables more reactive oxygen species to participate in the reaction which reduces the formation of intermediates and facilitates the reaction. This investigation provides new insights into the preparation of oxygen vacancy–rich monolith catalysts with high water resistance for practical applications.
研究领域:
环境科学
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催化化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2021
·
IF 4.311
Yanan Liu,Genkuo Nie,Shitao Yu,Lun Pan,Li Wang,Xiangwen Zhang,Chengxiang Shi,Ji-Jun Zou
Synthesizing high-performance jet fuels from lignocellulose-derived ketones through aldol condensation is significant for expanding the sources of jet fuel and promoting high-value conversion of biomass. The main problem in aldol condensation is that water generated in such a reaction will decrease the activity of the acid catalyst. Herein, we developed a highly stable, efficient, and water-tolerant SBA-16 confined phosphotungstic acid (HPW) catalyst and applied it to controllably catalyze cross-condensation of cyclopentanone and cyclohexanone. The surface of SBA-16 was modified by alkylimidazole, which creates a relatively hydrophobic environment and anchor points for HPW, leading to resistance to HPW leaching and maintenance of a stable performance for the catalyst. After hydrodeoxygenation, a high-performance fuel blend with a density of approximately 0.905 g/mL and a freezing point lower than −50 °C was obtained. This study provides a general method for preparing highly efficient and stable catalysts for reactions affected by water.
研究领域:
生物质能
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催化化学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
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IF 13.2
Chao Liang,Yipeng Quan,Wenting Qian,Shuang Guo,Shengjie Zheng,Guangjie Zhang,Mingsong Fan,Jun Xiong,Ming Li
The textile industry is a major contributor to environmental pollution and generates substantial waste each year. Recycling waste fabrics has garnered significant research interest, especially in addressing the urgent global challenge of freshwater scarcity. Interfacial solar desalination (ISD) is highly valued for its energy efficiency and environmental advantages. However, its application in desalination is hampered by various challenges, including low evaporation rate (ER) and insufficient salt resistance. In this study, a sustainable photothermal aerogel (PTA) made of polypyrrole (PPy)-decorated waste silk (WS) was developed, called PPy-WS-PTA, for efficient ISD. This PTA absorbs up to 96 % of sunlight. As a three-dimensional (3D) material, PPy-WS-PTA can capture energy from its surroundings. At an exposure height of 3 cm, the PPy-WS-PTA attains an ER of 2.04 kg m –2 h −1 under 1-sun. Due to its excellent water transport and storage capabilities, the PPy-WS-PTA can withstand 20 wt% saltwater while maintaining a stable ER of 1.61 kg m –2 h −1 . Outdoor desalination experiments have demonstrated that the PPy-WS-PTA can effectively desalinate 20 wt% saltwater. This PTA not only addresses freshwater shortages but also helps reduce fabric waste pollution and enhances reutilization efficiency.
研究领域:
环境科学
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材料科学
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能源工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CATALYSIS
·
2023
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IF 7.3
Yuanfeng Li,Tian Qin,Yaxiao Ma,Jing Xiong,Peng Zhang,Kezhen Lai,Xi Liu,Zhen Zhao,Jian Liu,Liwei Chen,Yuechang Wei
Herein, a series of Co x -CeO 2 nanosheet catalysts were elaborately synthesized by a one-step hydrothermal method. The CeO 2 microsphere with crossed nanosheets can improve the soot-catalyst contact efficiency and the lattice substitution of Co ions for cerium sites in CeO 2 results in the oriented lattice bending of Co-CeO 2 nanosheets for improving adsorption/activation properties of NO and O 2 . Co 2 -CeO 2 catalyst displays the highest H 2 O-tolerance activity ( T 50 = 334 °C, TOF = 1.32 h −1 ) and excellent stability during soot oxidation in the presence of H 2 O. Combined with characterizations and DFT calculations, the mechanism was proposed: the active edge sites located at the oriented lattice bending of Co-CeO 2 nanosheets can activate surface oxygen and gaseous O 2 , and active oxygen species can boost NO oxidation to NO 2 , which is a crucial step of NO x -assistant catalytic mechanism for soot oxidation. It provides a promising way for the rational design of high-performance non-noble metal catalysts for soot oxidation in practical applications.
研究领域:
催化
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环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Xiaofeng Wang,Zhe Zhao,Yang Xu,Qingbo Li
A series of 3DOM-Mn x Ce y Ti z catalysts with three-dimensionally ordered macroporous (3DOM) structure were synthesized by a soft template method. The high SCR activity of the 3DOM-Mn 3 Ce 1 catalyst at low temperature was owing to the excellent redox ability and rich Lewis and Brønsted acid sites of the catalysts, which were beneficial to improve the catalytic activity. However, the strong oxidizability of MnO x resulted in the nonselective oxidation of NH 3 and generation of N 2 O, decreasing the N 2 selectivity. After addition of Ti, the redox capacity of the 3DOM-Mn 3 Ce 1 Ti 1 catalyst decreased, and the NH 3 were strongly adsorbed on the acid sites, which enhanced the N 2 selectivity with a broadened temperature window of 240–440 °C and a high GHSV of 120000 h −1 . Furthermore, both the 3DOM-Mn 3 Ce 1 and 3DOM-Mn 3 Ce 1 Ti 1 catalysts showed remarkable tolerance of H 2 O. Finally, through in situ DRIFT analysis, the Langmuir-Hinshelwood (L-H) mechanism was confirmed as the dominant reaction pathway over the 3DOM-Mn 3 Ce 1 Ti 1 catalyst.
研究领域:
环境科学
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催化化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of the American Chemical Society
·
2013
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IF 10.677
Yehong Wang,Feng Wang,Qi Song,Qin Xin,Shutao Xu,Jie Xu
The use of a heterogeneous Lewis acid catalyst, which is insoluble and easily separable during the reaction, is a promising option for hydrolysis reactions from both environmental and practical viewpoints. In this study, ceria showed excellent catalytic activity in the hydrolysis of 4-methyl-1,3-dioxane to 1,3-butanediol in 95% yield and in the one-pot synthesis of 1,3-butanediol from propylene and formaldehyde via Prins condensation and hydrolysis reactions in an overall yield of 60%. In-depth investigations revealed that ceria is a water-tolerant Lewis acid catalyst, which has seldom been reported previously. The ceria catalysts showed rather unusual high activity in hydrolysis, with a turnover number (TON) of 260, which is rather high for bulk oxide catalysts, whose TONs are usually less than 100. Our conclusion that ceria functions as a Lewis acid catalyst in hydrolysis reactions is firmly supported by thorough characterizations with IR and Raman spectroscopy, acidity measurements with IR and 31P magic-angle-spinning NMR spectroscopy, Na+/H+ exchange tests, analyses using the in situ active-site capping method, and isotope-labeling studies. A relationship between surface vacancy sites and catalytic activity has been established. CeO2(111) has been confirmed to be the catalytically active crystalline facet for hydrolysis. Water has been found to be associatively adsorbed on oxygen vacancy sites with medium strength, which does not lead to water dissociation to form stable hydroxides. This explains why the ceria catalyst is water-tolerant.
研究领域:
催化化学
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材料科学
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环境化学
✓ 已验证
DOI
PubMed
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2024
·
IF 6.5
Qi Zhang,Yongjun Shu,Yinghao Zhang,Siqi Huo,Guofeng Ye,Cheng Wang,Zhitian Liu
To improve the comprehensive performance of intumescent fire-retardant coatings, the functionalized halloysite nanotubes (HNTs-D, HNTs@Fe 3 O 4 , and HNTs-D@Fe 3 O 4 ) were synthesized as synergistic flame retardants and incorporated into intumescent fire-retardant coatings (IFRC) for steel structures, demonstrating significant flame retardant properties. Among these modified halloysite nanosheets, HNTs-D@Fe 3 O 4 showed the best flame retardancy and water resistance. Adding the optimal addition amount (3 wt%) of HNTs-D@Fe 3 O 4 can increase the residual weight of coating from 28.10 % to 38.40 % and reduce the backside temperature of the coated steel plate from 288 °C to 177 °C, indicating that HNTs-D@Fe 3 O 4 can effectively improve the thermal stability and insulation performances of intumescent fire-retardant coatings. Cone calorimetric analysis showed HNTs-D@Fe 3 O 4 can effectively suppress the heat and smoke release of the intumescent fire-retardant coatings. Compared with the unmodified coating sample, the total heat release (THR) and total smoke release (TSR) of the HNTs-D@Fe 3 O 4 -containing coating sample were reduced by 66.04 % and 11.36 %. HNTs-D@Fe 3 O 4 facilitates the formation of dense char layers confirmed by the micro morphology characterization. Further mechanism analysis shows that HNTs-D@Fe 3 O 4 has obvious catalytic carbonization effect and is helpful to construct the dense expanded char layer with higher graphitization degree. The uniformly dispersed HNTs-D@Fe 3 O 4 improved the water resistance of intumescent fire-retardant coatings, which is mainly due to the hydrophobicity and barrier effect, thus effectively preventing the loss of water-soluble components.
研究领域:
材料科学
·
防火材料
✓ 已验证
产品关联
DOI
高影响因子
FOOD RESEARCH INTERNATIONAL
·
2025
·
IF 8
Aiying Shi,Juan Xue,Yongshuai Liu,Jianhui Wang,Xiaofei Liu,Lianqiang Song,Shanming Sun
Cronobacter sakazakii is a Gram-negative, foodborne pathogen associated with severe infections, particularly in infants and immunocompromised individuals. Given its significant public health implications and its remarkable resilience in powdered infant formula, understanding the genetic factors that contribute to its virulence and environmental tolerance is crucial. This study focuses on the kdpE gene in Cronobacter sakazakii , part of a two-component regulatory system known for its role in adaptation to environmental stress. A kdpE knockout mutant of Cronobacter sakazakii was constructed to evaluate its effects on bacterial growth, virulence, biofilm formation, and desiccation tolerance. The results revealed that kdpE deletion reduced bacterial growth and virulence, as evidenced by higher survival rates in rats infected with the Δ kdpE mutant compared to the wild-type strain. Notably, the Δ kdpE mutant showed significant downregulation of proteins involved in carbon metabolism and respiratory activity, while proteomic analysis revealed increased deamidation of proteins related to glycolysis. Furthermore, biofilm formation was significantly impaired in the mutant, although its desiccation tolerance was enhanced, attributed to the upregulation of the molecular chaperone GrpE. These findings suggest that kdpE plays a crucial role in regulating the virulence and environmental adaptability of Cronobacter sakazakii , with implications for understanding its pathogenic mechanisms and developing preventive measures.
研究领域:
微生物学
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分子生物学
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遗传学
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发病机制
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食品微生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Cell Reports
·
2025
·
IF 6.9
Yixuan Feng,Yiming Wang,Tai Wang,Lingtong Liu
Plant-unique RNA polymerase IV (RNA Pol IV) governs the establishment of small RNA (sRNA)-directed DNA methylation (RdDM). In dicotyledon, elevated RdDM activity is often associated with embryogenesis; however, the loss of RdDM frequently results in indiscernible phenotypes. Here, we report that the absence of SlNRPD1 , encoding the largest subunit of RNA Pol IV, leads to diminished RdDM and abnormal embryogenesis in tomato ( Solanum lycopersicum ). Hypermethylation at pericentric transposable elements (TEs) and a burst of 21/22-nt siRNA from the distal and pericentric genes are observed in slnrpd1 embryos. The specific activation of endoribonuclease Dicer-like 2 ( SlDCL2b / c / d ) is correlated with 21/22-nt sRNA accumulation. Auxin and WUSCHEL-related homeobox (WOX) signaling gene expression is altered by mCHH hypomethylation, which may lead to defective embryos. Due to improper maturation, the slnrpd1 embryos cannot withstand post-harvest desiccation. This study provides insights into how DNA methylation regulates plant embryogenesis.
研究领域:
植物生物学
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表观遗传学
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分子遗传学
✓ 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）