LANGMUIR
·
2024
·
IF 3.7
Xiuxian Gu,Jinyue Ma,Junhui He
Although a wide variety of single-function coatings have been successfully developed, the integration of multiple functions onto a single coating has remained an immense challenge in the field. Here, we report a simple room-temperature fabrication of robust coatings with UV-shielding, light conversion, and antifogging functionalities. The addition of glutaraldehyde (GA) molecular cross-linker and carbon dot (CD) nanocross-linker with light conversion function to poly(vinyl alcohol) (PVA) resulted in the formation of robust spatial structures of coatings. The fluorescence intensity tests demonstrated that the coatings had an excellent ability to absorb and convert ultraviolet light into blue-violet light. Both cold-warm and hot-vapor tests showed that the coatings had excellent antifogging performance. To our surprise, no creases were observed after coatings were immersed in water for 1 month, indicating that these are much stronger than those reported so far. The 8H pencil hardness and wear resistance attested to their excellent mechanical properties. The current preparation method can be operated at ambient temperature and is not restricted by the substrate type and shape. Therefore, it may also expand the possibilities for future applications of coatings for glass windows, optical microscopes, eyeglasses, agricultural greenhouses, and so on.
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DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Zhengwen Li,Liheng Chen,Xueqing Qiu
Lignin, a natural macromolecule renowned for its exceptional UV-blocking capabilities, has gained attention as a promising material for encapsulating chemical sunscreens. However, the inherent heterogeneity and dark coloration of lignin have limited its application in the sunscreen industry. This study presents a novel approach to obtaining uniform and light-colored lignin through fractionation of alkali lignin using a green co-solvent system of dimethyl carbonate and ethanol. The processed lignin was then utilized to create regular-shaped microspheres via the emulsion solvent evaporation (ESE) method. By optimizing the preparation conditions, the chemical sunscreen avobenzone (AVO) was successfully encapsulated within these lignin microspheres, achieving an AVO loading capacity of up to 70 %. The resulting lignin microsphere-coated avobenzone (LM/AVO) microcapsules demonstrated broad-spectrum UV resistance and sustained photostability for up to 12 hours under continuous UV exposure. Additionally, the microcapsules exhibited robust antioxidant properties and negligible skin penetration, highlighting their excellent safety profile. These findings indicate the significant potential of lignin-based microcapsules for innovative and effective sunscreen formulations.
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高影响因子
ACS Photonics
·
2024
·
IF 6.5
Shulin Sha,Kai Tang,Maosheng Liu,Peng Wan,Zeng Liu,Da Ning Shi,Caixia Kan,Mingming Jiang
Ferroelectric materials, known for their superior spontaneous polarization and pyroelectric and photovoltaic effects, offer a promising avenue for fabricating high-performance optoelectronic devices. Herein, we report an ultraviolet (UV) photodetector (PDs) based on BaTiO3@MXene/4H-SiC heterostructure, with its photosensitive properties significantly boosted by the ferro-pyro-phototronic effect. In the detector, the incorporation of MXene nanosheets boosts the spontaneous ferroelectric polarization of BaTiO3 nanocrystals, thereby strengthening the built-in electric field at the BaTiO3/4H-SiC heterojunction. The resulted BaTiO3@MXene/4H-SiC heterostructure can work in a self-biasing manner, with robust performances, including responsivity (∼187.74 mA/W), specific detectivity (∼6.52 × 1013 Jones), external quantum efficiency (∼75.07%), response/recovery time (∼74.3/122.7 μs) upon 310 nm light irradiation. Particularly, the superlinear increase of the photocurrent, which results from the hot-carrier multiplication in MXene nanosheets, allows the device to produce additional photocurrent under ultraviolet illumination. Theoretical analysis confirms that the surface modification of MXene nanosheets can effectively alter the length of the Ti–O bonds on BaTiO3 nanocrystal surfaces, thus enhancing their spontaneous ferroelectric polarization. Being seamlessly integrated into an ultraviolet wireless communication system, the BaTiO3@MXene/4H-SiC self-powered photodetector demonstrates promising application prospects in optoelectronic interconnection circuits. This study provides an optimization strategy for advanced BaTiO3 nanocrystals toward future high-performance electronic and optoelectronic devices in existing applications.
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高影响因子
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Zhenhe Wang,Shujin Ge,Shihao Chen,Xia Sun,Wei Chen,Qiuhong Li
Gaseous amines such as trimethylamine and ammonia are characteristic compounds for monitoring the quality of animal foodstuff like salmon meat. However, there is no existing colorimetric film with both hydrophobicity and UV-proof properties for salmon freshness monitoring in humid and light conditions. Addressing this challenge, a new colorimetric film was developed for monitoring salmon freshness by coating W/O Pickering emulsion containing microencapsulated red cabbage anthocyanin solution onto polyvinylidenefluoride film. The W/O Pickering emulsion was obtained using 3-(Trimethoxysilyl)propyl methacrylate modified TiO 2 @SiO 2 as the emulsifier. The ability of UV resistance and preventing anthocyanin from dissolving out of the film were verified by testing the light and water stability of film. The response of the colorimetric film to gaseous amines was investigated, and the performances including selectivity and linear range were evaluated. Based on this, the colorimetric film was successfully employed to monitor the freshness of salmon within 7 days at 4 ℃.
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高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Pengxiang Wang,Zhuoran Li,Limin Cao,Jianxin Sui,Hong Lin,Xiudan Wang,Kaiqiang Wang
Early and rapid detection of the freshness of aquatic products is crucial for their quality control. Hypoxanthine is considered as a key metabolite during the early stage of spoilage in aquatic products. In this study, we investigated a machine learning-assisted colorimetric method for hypoxanthine detection, utilizing an ultraviolet (UV)-enhanced xanthine oxidase (XOD)/mimetic peroxidase cascade reaction. UV irradiation effectively enhanced the peroxidase-like activity of bimetallic Fe/Ni metal organic framework (Fe 7 Ni 3 MOF), thereby enhancing the efficiency of hypoxanthine detection. Results revealed that under UV irradiation conditions, the UV-enhanced XOD/Fe 7 Ni 3 MOF cascade reaction can detect hypoxanthine within 4–70 μmol/L, with a detection limit of 1.63 μmol/L. This method allowed for the detection of hypoxanthine in large yellow croakers and shrimps, achieving spiked recovery rates ranging from 92.16 % to 127.31 %. By capturing colorimetric color images using a smartphone and extracting nine chromatic information parameters, support vector machine regression (SVMR) model was used to predict hypoxanthine content, exhibiting a coefficient of determination for prediction (R 2 P ) of 0.946 and a ratio of performance to deviation of 3.79. This study offers a novel alternative method for the rapid detection of quality changes in aquatic products.
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Sustainable Materials and Technologies
·
2024
·
IF 8.6
Jianyu Wu,Linmin Xia,Yiqin Shen,Chenshu Tan,Jiayun Su,Yuying Yang,Yan Yu,Rilong Yang
Passive daytime radiative cooling (PDRC) technology is a promising technology that can realize zero-energy consumption. The flexible PDRC materials attract much attention owing to their broad applicability. However, the flexible PDRC materials always show unsatisfactory mechanical performance, especially when exposed to prolonged sunlight irradiation. In addition, their fire resistance is also a cause for concern. Herein, inspired by the hierarchical leaf vein structure, a pliable, UV-resistant, nonflammable, robust nanocomposite cooling paper (HTP) composed of hydroxyapatite nanowires (HNWs) and TEMPO-oxidized cellulose nanofibers (TOCNFs) is developed. Through customizing interfacial engineering to introduce physical entanglement and multiple bonding, the leaf-vein-analogous hollow networks formed by HNWs are reinforced by TOCNFs, fully leveraging the advantages of one-dimensional inorganic HNWs and organic TOCNFs at the nanoscale. This enables the HTP to achieve excellent mechanical strength and PDRC performance with a small amount of TOCNFs doping. HTP exhibit a high tensile strength of 48.56 MPa and Young's modulus of 3.07 GPa, surpassing most previously reported flexible PDRC materials. Furthermore, HTP demonstrates outstanding flame resistance and anti-UV aging properties, which benefit from frameworks formed by HNWs and TOCNFs. The exceptional overall performance overcomes the limitations of conventional polymer-based flexible PDRC materials, significantly advancing the practical application of flexible PDRC materials, especially for building cooling.
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高影响因子
PROGRESS IN ORGANIC COATINGS
·
2024
·
IF 6.5
Yuanyuan Zuo,Zixuan Rao,Wan Lu,Zhenbang Wang,Hongye Yan,Yu Zhou,Hongxiang Chen,Minghua Yang
Waterborne polyurethane (WPU) has poor water resistance and low surface hydrophobicity due to the incorporation of hydrophilic chain-extender. The water resistance and the surface hydrophobicity can be improved by incorporation of polydimethylsiloxane (PDMS), which is attributed to the migration of PDMS chain segments toward the surface of WPU film . However, whether the PDMS chain segments can migrate toward the surface of WPU film after UV-curing, resulting in higher hydrophobicity, needs further investigation? We prepared the different WPUA films by changing the molar ratio of aminopropyl-terminated polydimethylsiloxane (APT-PDMS) to hydroxyethyl acrylate (HEA), to deeply understand the migrating phenomenon of PDMS chain segments toward the surface of WPUA films. The migration cause of PDMS chain segments and the influence of chemical cross-linking on the migration were investigated by thermal annealing and solvent immersion of WPUA films. In addition, the migration activation energy and the relaxation time were studied by the migration rate of PDMS chain segments in the thermal annealing and the rheological behavior of WPUA film, aiming to elucidate the migration of PDMS chain segments depending on the chain motion and the fractional free volume. This investigation provides a simple and feasible strategy for improving the hydrophobicity of waterborne polyurethane .
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高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2025
·
IF 5.2
Jiahao Song,Hao Wu,Kaihu Zhang,Ruirui Liu,Yunfan Yang,Xinyue Zhang,Ahmed Elsherif,Ning Ma,Alaa S. Abd-El-Aziz
Ionic liquids (ILs) have been widely used as flexible sensors due to their tunable properties, low vapor pressure, and high electrical conductivity. ILs containing sulfonium cations have exhibited low melting points, high conductivity, and excellent stability comparable to imidazolium-based ILs, rendering them promising candidates for low-temperature sensing applications. Nevertheless, the unique properties of functionalized sulfonium-based ILs pose challenges for their synthesis using conventional methods, thereby limiting their widespread utilization. In this study, we propose an efficient approach for the preparation of functionalized sulfonium-based ILs and, for the first time, obtain ILs capable of ultraviolet (UV) light sensing at −10 °C. The synthesized ILs maintain their liquid state over a broad temperature range (−30 °C to 150 °C) and exhibit sensitive responses to UV light under complex environments, including low and high temperatures, as well as underwater, demonstrating great potential for their applications as flexible sensors.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Zhicheng Bai,Teng Huang,Jiahao Shen,Dan Xie,JinJia Xu,Junhui Zhu,Fengqing Chen,Wenbiao Zhang,Jinfeng Dai,Pingan Song
Polylactic acid (PLA) is inherent brittle, flammable, and susceptible to ultraviolet light irradiation, limiting its application in the field of engineering safety. Therefore, advanced PLA composites with toughness and flame retardancy as well as other exceptional engineering performance has garnered significant interest. In this work, a versatile additive (PAHP) was synthesized by nucleophilic substitution utilizing flexible chain (polyphosphazene) as the skeleton and rigid biomass compound (guanine) as a substituent, then fabricating all-in-one PLA composites. The PAHP plays a synergistic flame-retardant role in both the gaseous and condensed phases, improving the flame retardant performance of the composites while effectively enhancing the crystallization and mechanical properties of PLA. Only 5 wt% PAHP within PLA composite can meet the fire-safety requirements of engineering applications (V-0 rating of UL-94) and exhibits a ∼12-folds enhancement in toughness compared to neat PLA. Moreover, the PLA/5% PAHP composite shows excellent ultraviolet shielding effects, blocking approaching 100 % UV isolation under UV-B wavelengths. This work offers a scalable strategy for preparing multifunctional flame-retardant additives, opening up a great promise for the application of high-performance PLA engineering composites in packaging, electronic, and automotive.
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高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2024
·
IF 3.8
Jing Zhang,Xiaolong Yao,Yue Zhao,Rengui Li,Xiaofei Chen,Haibo Jin,Huangzhao Wei,Lei Ma,Zhao Mu,Xiaowei Liu
Wastewater treatment, especially the efficient degradation of contaminants such as m-cresol, remains a pivotal challenge. This study investigates the application of artificial neural networks (ANN) in predicting total organic carbon (TOC) removal rates from m-cresol-contaminated wastewater by using the ultraviolet (UV)-Fenton oxidation process. Six key variables, namely, Fe2+ dosage, H2O2 dosage, catalyst quantity, reaction time, pH, and substrate concentration, were employed as inputs to the ANN model. Leveraging this multivariable input and a comprehensive data set, the ANN model projected a maximum TOC removal rate of 87.12%, validated by an efficiency of 86.26% achieved through experiments under the derived optimal conditions: Fe2+ dosage at 16.09 mg/L, H2O2 dosage at 1.40 mg/L, catalyst quantity at 0.11 g/L, reaction time of 29.80 min, initial pH of 3.66, and substrate concentration of 50 mg/L. Comparative analysis with other machine learning algorithms further revealed that the ANN model notably outperformed linear regression, support vector regression, and random forest in terms of precision. This work paves the way for resource-optimized experimental designs, fostering real-time wastewater monitoring and refining advanced oxidation process proficiency in industrial applications.
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高影响因子
PHOTOCHEMISTRY AND PHOTOBIOLOGY
·
2018
·Vol. 94
·期 4
·650-658
·
IF 2.214
Rong Liu,Yonggang Zhang
Photoelectrocatalytic (PEC) system greatly improves the migration of photoexcited charges, retards the fast recombination of electron-hole and increases the lifetime of photogenerated holes. In this article, we constructed a novel PEC system to degrade berberine chloride form (BCF). XRD patterns indicated aging time was an important condition for the crystal type of TiO 2, and the best proportion of anatase/rutile was 80/20. The band gap energy of the TiO 2 was 3.01 eV. We demonstrated that a synergistic effect existed between photocatalysis (PC) and electrocatalysis (EC). Besides, we discussed the influence of pH, current density, the amount of catalyst and initial BCF concentration on the degradation of BCF. Electron spin resonance (ESR) through spin trap 5, 5-dimethyl-1-pyrroline-N-oxide (DMPO) and the scavenging experiments suggested that the reactive oxygen species (ROS) were superoxide radicals ( ), hydroxyl radicals (·OH) and sulfate radical ( ) in PEC system. Furthermore, we compared the two pathway of formation DMPO-SO 4 adducts and found that was the most major oxidized species in degrading BCF. We proposed a plausible reaction mechanism. Intriguingly, even under lower current and weaker light conditions, the PEC process maintained its effectiveness, demonstrating the feasibility of the PEC approach.
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PubMed
高影响因子
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
·
2018
·Vol. 132
·期 3
·1795-1804
·
IF 2.209
Ning Xiangli,Liang Hongbo,Bu Jiang,Xiong Lei,Huang Shengmei,Xu Haitao
A novel tri-substituted triazine in which substituted methacrylated piperzinyl (TMAPT) was synthesized and was then blended with di(acryloyloxy propyl) methyl phosphate (DAPMP) and pentaerythritol triacrylate (PETA) in different ratios to prepare UV curable intumescent flame-retardant coating. Their thermal stabilities and flame-retardant properties were studied by thermogravimetric analysis and limiting oxygen index (LOI), respectively. The results showed that the LOI values of the film increased almost linearly from 19.2% for C 10 N 0 to 25.2% for C 5 N 5 with increasing the content of TMAPT, which showed typical gas-phase flame-retarding mechanism. The FTIR spectra of the cured samples with increasing temperatures were measured, and the results indicated the potential expanding mechanism was that the nitrogen volatiles from TMAPT were wrapped by the char formed by catalyzing of poly(phosphoric acid)s, which was the degradation products of DAPMP. The expansion processes were monitored by a self-made equipment, which indicated the synergetic effect between TMAPT and DAPMP and further demonstrated the expansion mechanism. The sample PETA 4 DAPMP 2 TMAPT 4 (C 4 P 2 N 4 ) had the highest expansion degree of 126 among all samples. Moreover, thermal insulation properties of the cured coating were further measured, which also proved the synergetic effect between TMAPT and DAPMP.
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高影响因子
危险品化学品经营许可证（带存储）