APPLIED SURFACE SCIENCE
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2018
·
IF 4.439
Chi Jiang,Weiqu Liu,Maiping Yang,Chunhua Liu,Sha He,Yankun Xie,Zhengfang Wang
Robust superhydrophobic fabric (SF) was successfully achieved by surface modification with anatase TiO 2 sol and mercapto silanes, subsequently followed by hydrophobization with perfluorooctyl methacrylate (PFOMA) via thiol-ene click reaction. The resultant SFs not only exhibited excellent superhydrophobicity with a water contact angle of 157.7° and a water shedding angle of 4°, but also showed the considerable photocatalytic activity by the degradation of oil red O under UV irradiation. Moreover, the SFs exhibited a wetting transition from a superhydrophobic state to a superhydrophilic state by the alternation of UV exposure and thermal treatment. The SF could be utilized to separate oil-water mixture owing to its superhydrophobicity and superoleophilicity. Importantly, the SFs were tolerant towards strong acidic or alkaline environments, corrosive organic solvents, laundering, and mechanical abrasion. In addition, this facile preparation process could impart the superhydrophobicity to other substrates (such as PET fabrics, nonwoven fabrics, and sponges). Therefore, superhydrophobic materials with multi-functionality of UV induced reversible wettability, photocatalytic self-cleaning property, and oil-water separation are regarded as promising candidates for a wide range of applications.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2018
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IF 3.141
Tao Zhang,Qiuyan Yu,Jiajun Wang,Tao Wu
A new and highly transparent multilayer coating on poly(lactic acid) (PLA) film has been designed and constructed based on the layer-by-layer assembly of green and renewable hydroxypropyl methylcellulose (HPMC) and tannic acid (TA). The surface chemical structure, thickness, and morphology analyses of the multilayer coating confirm that HPMC and TA are successfully incorporated based on the hydrogen-bonding interaction. The resultant coated PLA film presents excellent UV-shielding and antifogging properties, which shows strong dependency on the number of assembly cycles. Although the tensile mechanical property of coated PLA film shows a decrease, the thermal property of the PLA substrate remained. This work provides a simple but effective pathway to design and fabricate highly transparent and environmentally friendly coating for the UV-shielding and antifogging applications.
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JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY
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2013
·Vol. 24
·期 6
·1034-1040
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IF 1.283
Yu Chen,Zhang Sanbing,Zhang Jiaheng,Li Songqing,Zhou Wenfeng,Gao Haixiang,Lu Runhua
An in situ ionic liquid dispersive liquid-liquid microextraction (IL-DLLME) method was developed as a new approach for the detection of four pyrethroid pesticides in environmental water samples. The method is fast, simple, accurate and environmentally friendly. The hydrophobic ionic liquid, [C8MIM]-NTf2, formed by the water-soluble ionic liquid [C8MIM]Cl and the ion exchange reagent LiNTf2 was used as the extraction solvent. The experimental parameters affecting the extraction efficiency, including the amount of the IL, the extraction and the centrifugation times and the salt concentration were investigated and optimized using an orthogonal array design (OAD). A suitable molar ratio of LiNTf2 to [C8MIM]Cl on the recoveries of analytes was determined after OAD optimization. The method showed a good linear response in the range of 0.5 to 500 µg L-1 with correlation coefficients (R²) above 0.9998. The relative standard deviation (RSD) varied from 0.6 to 1.9%. The enrichment factor, the limit of detection and recovery ranged from 134 to 153, 0.02 to 0.18 µg L-1 and 89.7 to 95.6%, respectively. For water samples, the RSD ranged from 0.02 to 2.34% and the recovery ranges from 91.4 to 99.9%.
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RSC Advances
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2016
·Vol. 6
·期 22
·17857-17866
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IF 3.289
Jinyue Dai,Yanhua Jiang,Xiaoqing Liu,Jinggang Wang,Jin Zhu
Two kinds of UV-curable monomers (EM2G and EM3G) were synthesized from eugenol via a thiol–ene reaction. Their chemical structures were confirmed by FT-IR, 1H-NMR and 13C-NMR before they were employed to copolymerize with acrylated epoxidized soybean oil (AESO). Bio-based UV curable resins were prepared and their thermal and mechanical properties were investigated by tensile testing and dynamic mechanical analysis (DMA). Their coating properties on tinplate were also studied. The results showed that the tensile strength, tensile modulus and glass transition temperatures of the cured AESO were significantly improved after the introduction of eugenol-based monomers. In addition, the UV-cured resins could be well coated on the surface of tinplate and good coating properties, such as hardness, flexibility, adhesion, solvent resistance and water absorption were demonstrated.
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MICROCHIMICA ACTA
·
2016
·Vol. 183
·期 8
·2467-2472
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IF 4.831
Yang Yang,Ma Xiaowei,Feng Fan,Dang Xueping,Huang Jianlin,Chen Huaixia
The article describes the synthesis of core-shell magnetic nanoparticles (MNPs) of the type Fe 3 O 4 @MIL-100 (MIL standing for Material Institut Lavoisier), and their application as sorbent for magnetic solid-phase extraction (MSPE) of triclosan. The MNPs were prepared via circular self-assembly of ferric chloride and benzenetricarboxylic acid. The functionalized MNPs were characterized by transmission electron microscopy, FTIR and thermogravimetry. Following extraction, triclosan was eluted with ammoniacal methanol and then submitted to HPLC with UV detection. The amount of magnetic microspheres, sample pH and ionic strength, adsorption time, desorption time, desorption solvent and the volume of the eluent were optimized. Under optimum conditions, the method showed good linearity in the 0.1 to 50 mg·kg −1 triclosan concentration range in toothpaste samples. Other features include (a) intra-day and inter-day relative standard deviations (RSD, for n = 4) of <5.5 %, (b) a 30 μg·kg −1 limit of detection, and (c) extraction recoveries between 90.86 % and 101.1 %. The method was successfully applied to the determination of triclosan in children’s toothpaste.
The article describes the synthesis of core-shell magnetic nanoparticles (MNPs) of the type Fe 3 O 4 @MIL-100, and their application as sorbent for magnetic solid-phase extraction (MSPE) of triclosan.
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DALTON TRANSACTIONS
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2017
·Vol. 46
·期 43
·14839-14846
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IF 4.029
Ruru Ma,Dongdong Xu,Yun Yang,Xin Su,Binghua Lei,Zhihua Yang,Shilie Pan
Two new isostructural rare-earth oxyborates ScMO(BO3) (M = Ca and Cd) with a three-dimensional (3D) cationic framework and parallel arranged [BO3] triangles have been synthesized by the flux method. In the 3D cationic framework, an interesting sandwich-like basic building unit (BBU) is constructed by two ∞1[Ca(1)O4]6− chains and two ∞1[Sc(1)O4]5− chains. ScMO(BO3) melt incongruently, which shows that title compounds can be grown by the flux method. The UV cut-off edges for ScCaO(BO3) and ScCdO(BO3) are 230 and 249 nm, respectively. In addition, the first-principles calculations are performed to gain further insights into the relationship between the microscopic electronic structures and associated optical properties.
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INDUSTRIAL CROPS AND PRODUCTS
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2024
·
IF 5.6
Hui Zhang,Yanyan Zhang,Xinyu Wang,Wei Wang,Zhi Wu,Yan Wu,Yi Sun,Zongqian Wang
As an important biomass resource, chestnut shells are often discarded and wasted. In this study, we report an innovative, low-cost and environmentally friendly approach of dyeing silk fibers with natural pigments extracted from chestnut shells using deep eutectic solvent (DES) and imbuing them with antibacterial and ultraviolet protection properties. To improve the extraction ratio of chestnut shell pigment, DES of choline chloride and urea (ChCl/Urea) with high solubility performance was adopted to extract pigment from chestnut shells and then directly used for silk dyeing. The color spectral curve, washing durability, antibacterial and ultraviolet resistance of dyed silk were tested and compared with the silk dyed by metal salt mordant. The result showed that compared with ethanol extraction, DES extraction method had a higher extraction rate and better stability of the extraction solution. Owing to the swelling, surface modification and high permeability of ChCl/Urea DES to silk fibers, the affinity between the pigment solution and silk fibers was enhanced, and the pigment molecules entered the amorphous area inside the silk fibers, forming a tight bond with the fiber matrix during dyeing. Therefore, the dyed silk fabric has excellent washing durability and soft luster, and the color strength ( K / S ) remained unchanged after three washings. Meanwhile, the antibacterial activity and ultraviolet protection coefficient of silk dyed with chestnut shell pigment reached above 97% and 42.26, respectively, which exhibits excellent antibacterial and ultraviolet protection properties.
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Analytical Methods
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2024
·
IF 2.7
hui shi,Yuntong Liu,Chu Qiu,Chunyu Wang,Zhimin Zhang,Meijun Lu,Bo Wang,Yuan Tian,Daqian Song,Ziwei Zhang
Alkaline phosphatase (ALP) is an indispensable hydrolase in living organisms and the abnormality of ALP activity is correlated with a variety of diseases. To explore ALP activity is important for clinical diagnosis and biomedical research to understand its physiological function. In this study, a dual-mode biosensing platform was constructed based on Cu-based metal-organic framework (Cu-MOFs) for electron spin resonance (ESR) and ultraviolet-visible (UV-vis) sensing of ALP. Cu-MOFs, as peroxidase mimic, catalyzed the decomposition of hydrogen peroxide (H2O2) and the generation of reactive oxygen species (ROS) which could oxidize ABTS into ABTS•+ with good ESR and UV-vis signals. Pyrophosphate ion (PPi) with high affinity to Cu2+ in Cu-MOFs could suppress the peroxidase-like activity of Cu-MOFs, and ALP could hydrolyze PPi, resulting in the recover of Cu-MOFs catalytic activity. Thus, a quantitative dual-mode method for detection of ALP activity was established with good linearity in the range of 0-42 U L-1 and limits of detection as low as 0.386 and 0.523 U L-1 respectively for ESR and UV-vis detection. Benefiting from its high sensitivity and excellent selectivity, this method was applied for ALP detection in human serum and satisfactory recoveries were achieved. The off-on dual-mode sensing platform is more reliable than the single-mode sensor and shows merits like simple operation and cost-friendliness, making it have great potential in the diagnosis of ALP-related diseases.
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JOURNAL OF CHROMATOGRAPHY A
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2024
·
IF 3.8
Zi-Yu Li,Jia-Hui Zhu,Yu-Zhuo Xu,Jie Zhao,Yu-Shen Liu,Lu-Liang Wang,Shu-Yang Sun,Shi-Lei Ji
Novel magnetic covalent organic frameworks (COFs) were prepared by one-pot synthetic strategy and employed as an efficient adsorbent for magnetic solid-phase extraction (MSPE) of naphthaleneacetic acid (NAA) in food samples. Depending on the predesigned the hydrogen bonding, π-π and hydrophobic interactions of magnetic COFs, the efficient and selective extraction process for NAA was achieved within 15 min. The magnetic COFs adsorbent combined with HPLC-UV was devoted to develop a novel quantitative method for NAA in complex food. The method afforded good coefficient in range of 0.002–10.0 µg mL -1 and low limit of detection was 0.0006 µg mL -1 . And the newly established method afforded less adsorbent consumption, wider linearity and lower LODs than the reported analytical methods. Ultimately, the method was successfully applied to determine NAA in fresh pear, tomato and peach juice. The magnetic COFs based MSPE coupled with HPLC-UV method provided a simple, efficient and dependable alternative to monitor trace NAA in food samples.
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Nano Research
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2024
·
IF 9.5
Tan Changwei,Hu Zishou,Guo Zhiyi,Cui Zheng,Bai Ling,Wu Xinzhou,Huang Chenchao,Su Wenming
Flexible electrochromic devices (FECDs) are promising candidates for the next generation of wearable electronics due to their low operating voltage and energy consumption. For the flexible electrochromic devices, the electrolyte is an important component. Typically, the electrolyte needs to be formulated according to the device structure and usage scenario. A high-performance electrolyte involves consideration of many factors, including choosing the right polymer, solvent, curing agent, and ion type to satisfy particular device specifications. In this work, a ultraviolet-curable solid–liquid host–guest (UV-SLHG) electrolyte is developed. Several aspects of performance are improved by introducing the solid–liquid coexisting microstructure without changing the electrolyte formulation, including excellent adhesion, a 30% increase in tensile characteristics, and a seven-fold increase in ionic conductivity when compared to a fully cured solid-state electrolyte. More importantly, the unique advantage of SLHG electrolytes lies that the thickness will not change significantly during bending. The FECD made by using the UV-SLHG-based electrolyte sustained 10,000 bending cycles at the bending radius of 2.5 mm while maintaining outstanding optical modulation. A wearable ring-type ECD and a battery-free FECD wine label were made as demonstrators. The UV-SLHG strategy is not only suitable for the FECDs but also universally applicable to other electrolyte-based of flexible electronics such as flexible capacitors and batteries.
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SOLAR ENERGY MATERIALS AND SOLAR CELLS
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2024
·
IF 6.3
Yu Song,Xiaolin Qiu,Huaxuan Liu,Yu Han
Micro-encapsulated/macro-encapsulated phase change materials (Micro/MacroPCMs) are attractive environmental energy materials since they can be integrated into building materials, textile fabrics and heat-insulating materials to give their solar energy storage capacities and improve their temperature adjustment abilities. An innovative set of Micro/MacroPCMs has been designed using natural polymers, showcasing prowess in solar energy storage and UV protection. The eco-friendly bifunctional MicroPCMs are made up of paraffin as core and titanium dioxide (TiO 2 )-modified chitosan (CS) as shell. Their energy efficiency was elevated using a double emulsion technique. Alginate (ALG), an anionic polysaccharide, was selected as the matrix of the MacroPCMs to provide an enhanced combination with the cation polysaccharide CS shell. The surfaces and structures of the Micro/MacroPCMs were observed through SEM and image measurement (IM). Their chemical profile was deciphered using FTIR and XRD. Ultraviolet–visible spectrophotometry evaluated their UV resistance. DSC, TGA, and infrared thermography delved into their thermal attributes, while a texture analyzer revealed the mechanical strength of the MacroPCMs. The introduction of TiO 2 resulted in a greater effective enthalpy and thermal stability. The energy storage ability of the MicroPCMs was further improved by using a double emulsification system. Notably, MicroPCMs crafted with TiO 2 -infused CS using the double emulsion approach stood out, boasting an impressive PCM content of 81.3 %, a melting enthalpy of 125.5 J/g, and commendable UV and thermal regulation capacities. With their robust thermal performance and mechanical resilience, these eco-friendly difunctional Micro/MacroPCMs emerge as prime contenders in solar energy conservation and temperature control applications.
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2024
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IF 4.3
Guangbin Zhu,Ning Duan,Linhua Jiang,Fuyuan Xu,Hongping He,Wen Cheng,Rong Zhang,Yong Liu,Yanli Xu,Shaige Xia,Xiaolu Sun,Fawei Lin
The current methods for determining high-concentration As(III) in the high-acid matrix from the copper smelting industry are complex, time-consuming, and costly. This limits effective modulation of sulfurizing agent dosage for As(III) removal via sulfurization, aggravating hazardous waste generation. Herein, a simple, rapid, and nondestructive UV high-reference differential absorption spectroscopy was developed to directly determine high-concentration As(III) in simulated high-acid wastewater. Time-dependent density functional theory calculations indicated that the spectral curve redshift with As(III) concentration increasing was related to the decrease of electron transition energies and energy gaps. When using high-reference solutions, the least redshift in the maximum absorption wavelength and the highest upper limit of linear fitting concentration could be obtained. Therefore, the piecewise quantitative linear model of differential absorbance and concentration was established under high-reference. The quantitative range of the model within 0.06–20.00 g/L As(III) with a mean relative error of < 5.0 % and standard recovery rates within 98.0 %-104.0 % indicated high accuracy. Additionally, the relative standard deviations of < 1.5 % (n = 5) revealed good precision. All results indicated the high feasibility of the developed method in alleviating linear deviation caused by redshift and absorption saturation. Furthermore, it has potential significance in saving sulfurizing agent dosage and reducing hazardous waste generation from the source, thereby facilitating a cleaner process for removing As(III) via sulfurization.
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