Journal of Macromolecular Science Part B-Physics
·
2023
·
IF 1.4
Niloofar Ranjbar,Majid Kolahdoozan,Hassan Ebadi-Dehaghani
Improvement of thermal stability of silicone-based coatings was the main objective of this study. In this study bromoacetic acid (BAA) was reacted with 3-(mercaptopropyl) trimethoxy silane (MPTS) and trimethoxy silyl propyl thioacetic acid (TSTA) was produced. Also, bromoacetic acid (BAA) was reacted with 3-(triethoxysilyl) propylamine (APTS) and triethoxysilyl propylamino acetic acid (TSPA) was synthesized. Finally, from a reaction between trimellitic anhydride (TMA) and APTS, trimellitylimidopropyl triethoxysilane (TMIS) resulted. Compounds containing carboxylic acids and trimethyl silane were obtained in all of these reactions. Furthermore, hybrid coatings based on methacrylated bisphenol A epoxy (MBAE) and the synthesized carboxylic acids were obtained by photopolymerization. Polycarbonate substrates were utilized for preparation of the transparent hybrid films. Then the solvent resistance, hardness and gel content, as well as the adhesion of the coatings, were measured as physical and mechanical properties. According to the obtained results, these properties of the hybrid coatings were improved with the increase in alkoxysilanes and sol–gel precursor contents. The surface morphology was characterized by scanning electron microscopy (SEM). The results showed that silica particles were not dispersed homogenously at the molecular level in the hybrid system. Also, the thermogravimetric analysis results indicated that alkoxysilanes enhanced the thermal oxidative stability of the hybrid coatings.
✓ 已验证
DOI
高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2026
·
IF 9.2
Wei Xiang,Chen Wang,Chuan Yi,Yulun Wu,Na Xia,Xiangpu Zhang,Chunyan Xu,Mingjie Huang
Emerging contaminants (ECs) in drinking water sources pose significant risks to both human health and ecological security. However, their occurrence patterns and removal efficiencies in conventional drinking water treatment processes remain insufficiently studied, limiting the development of effective mitigation strategies. This study conducted a systematic investigation of major ECs in the Yangtze River and its largest tributary, the Han River. Among the analyzed ECs, pesticides and pharmaceuticals were identified as the predominant contaminants, with the Han River exhibiting particularly elevated concentrations. Monitoring across the treatment trains of two drinking water treatment plants (DWTPs) revealed that most ECs were removed with efficiencies below 50%, demonstrating the superior performance of chemical oxidation over physical methods. Lab-scale experiments further verified that UV irradiation and NaClO oxidation were the most effective treatment techniques, though both exhibited notable compound-specific selectivity. Structure-activity relationship analysis of 18 ECs indicated that direct photolysis by UV and direct oxidation by NaClO served as the primary removal mechanisms, with UV proving significantly more efficient. Removal selectivity was closely associated with molecular structural features: UV photolysis efficiency correlated with triplet excitation energy and the energy gap between the lowest unoccupied and highest occupied molecular orbitals (LUMO-HOMO), whereas NaClO oxidation efficiency was linked to excited-state energy and HOMO energy levels. These findings offer valuable insights for assessing source water risks and optimizing treatment strategies to enhance drinking water safety.
✓ 已验证
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Wenshuai Si,Yi Shao,Lijuan Chang,Wei Song,Shouying Wang,Zhijie Zhang,Chunxia Yao
A 2D/2D mesoporous Co 3 O 4 /g-C 3 N 4 nanocomposite with triple synergy was constructed. • The Co 3 O 4 /g-C 3 N 4 nanocomposite shows excellent antibiotic removal efficiency. • The photothermal effect accelerates TC degradation by elevating reaction temperature. • This work offers insights into the design of multimodal synergistic photocatalysts for environmental remediation. Developing potent photocatalysts is of great significance for both preventing and remediating antibiotic-polluted environments. In this work, a 2D/2D mesoporous Co 3 O 4 /g-C 3 N 4 (Co 3 O 4 /CN) nanocomposite is constructed and reported as a multimodal antibiotic-degrading photocatalyst featuring triple-function synergy: (1) The mesoporous structure of Co 3 O 4 increases the nanocomposite's surface area, enhancing antibiotic adsorption; (2) Co 3 O 4 /CN exhibits excellent full-spectrum light absorption and remarkable photothermal effect, elevating the temperature of the reaction system to facilitate photodegradation reaction; (3) The p-n heterojunction formed between Co 3 O 4 and g-C 3 N 4 promotes efficient separation of photogenerated electrons and holes. Owing to the combined action of its mesoporous structure, photothermal effect, and efficient charge separation, the Co 3 O 4 /CN nanocomposite demonstrates outstanding photocatalytic performance, with tetracycline (TC) being completely degraded (100% degradation rate) within 100 min. This research offers valuable references for the synthesis of multimodal synergistic photocatalysts applied in environmental remediation. Download: Download high-res image (275KB) Download: Download full-size image This work successfully constructed a 2D/2D Co₃O₄/g-C₃N₄ nanocomposite with triple-function synergy of mesoporous structure, photothermal effect, and p-n heterojunction, which provides valuable references for the design of multimodal synergistic photocatalysts in environmental remediation.
✓ 已验证
DOI
高影响因子
CELLULOSE
·
2025
·
IF 4.8
Zhou Yang,Zhang Sheng,Yu Kun,Yang Ming,Wang Shu,Li Qing
With development of hyperspectral imaging technology, to detect and capture detailed spectral information of a hidden object become possible. So far cotton camouflage is mostly achieved through coating or dyeing with synthetic dyes. While natural dye has gained massive popularity in recent years, its application in camouflage dyeing seems to have received little attention. This paper reports cotton cellulose as natural substrate and its dyeing with biomimetic composite natural dye of sodium copper chlorophyllin (SCC) and red onion skin extracts, to mimic reflectance curve of natural green leaves in the ultraviolet, visible and near-infrared (UV-Vis-NIR) regions. Cotton was cationically modified to enhance natural dye affinity and to improve color fastness of dyed fabrics. Results showed that at SCC concentration of 20% owf and red onion skin extracts of 80% wt, spectral correlation coefficient of dyed cotton and natural green leaves reached 0.96 in 300–1300 nm range, and colorimetric values of dyed cotton closely matched that of the standard dark green with a color difference of 3.2. The dyed cotton exhibits superior colorfastness, excellent ultraviolet protection and antioxidant capacities. The process employed in this work is simple, effective and environmentally friendly. Outcomes of this study have opened up new possibilities for the development of natural green camouflage materials with multifunctions.
✓ 已验证
产品关联
DOI
高影响因子
CELLULOSE
·
2023
·Vol. 30
·期 17
·11249-11259
·
IF 5.7
Pan Ying,Liang Qianyong,Du Jia,Zhang Huaiwei,Zhang Dong,Zhao Hongting,Lü Ting,Zhang Yan
Boron and nitrogen co-doped carbon dots (BN-CDs) were synthesized using one-pot hydrothermal carbonization. The synthesized CDs were then combined with alginate and polyethyleneimine to create a multilayered coating on cotton fabric through layer-by-layer (LbL) self-assembly. The CD-containing coating emitted visible blue light under a 365 nm UV lamp. The UV protection, thermal stability, flame retardancy, and wash durability of the CD-treated cotton fabric were subsequently investigated. The ultraviolet protection factors of pure cotton fabric and cotton fabric treated with 12 bilayer CD-containing coating were 6.48 and 64.10, respectively. This indicated that the synthesized CD is an efficient UV absorber. In the TGA test, more char residue was observed at 700 °C for CD coated cotton fabrics under a nitrogen atmosphere. After B, N co-doped CDs were enriched in the PEI/alginate multilayered coating, the peak heat release rate (PHRR) of cotton-CDs-12BL was reduced by 15%, and the T PHRR of cotton-CDs-12BL was improved by 26.4 °C in the microscale combustion calorimeter test. These results indicate that B, N co-doped CDs which possess UV absorption and environmental friendliness, have potential application as a flame retardant on the surface of cotton fiber.
✓ 已验证
产品关联
DOI
高影响因子
Surfaces and Interfaces
·
2023
·
IF 6.2
Guodong Liu,Zhongming Song,Xiuan Gao,Yinfeng Wang,Zhijian Li
Paper, a low-cost and eco-friendly substrate, can be used to prepare flexible electronic devices by resorting to surface modification technology. In this study, we investigated the surface modification of paper substrates, including those that were uncoated or coated with traditional mineral coatings , to analyze the enhancements to surface flatness and water resistance using a UV curing varnish layer. Furthermore, we explored the formation of perovskite films on the surface-modified paper substrates utilizing a PEO-doped perovskite precursor solution in ambient air, and the surface morphology , crystallinity , photoluminescence properties, and absorption properties of the prepared perovskite films were discussed accordingly. Considering the nontransparent feature of paper-based substrates, the inverted perovskite light-emitting device was finally assembled by transfer printing a transparent PEDOT:PSS layer as a top electrode. The conductive and optical properties of the electrode layer were thus analyzed as well. It is found that the surface modification of paper substrates via printing the UV curing varnish can illustrate significant improvements, such as pore-filling on the surface, a more than 10-fold reduction in roughness, and downward penetration. Moreover, prepared perovskite films on the surface-modified coated paper exhibit superior enhancements, including photoluminescence, higher crystallinity, and surface roughness and porosity. Devices fabricated on the surface-modified substrates are less susceptible to short-circuiting. The electroluminescence on the surface-modified coated paper substrate is 2.16 times higher than the prepared device on the surface-modified base paper substrate and even 3.23 times higher than on the PET substrate. Therefore, it is quite feasible to fabricate a perovskite light-emitting device on the modified surface of a paper substrate by using a printed UV curing varnish layer, which is expected to be a promising coating to polish the paper surface in the preparation of electroluminescent devices.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2020
·
IF 6.182
Yudong Zhang,Long Liang,Ziyang Chen,Jinjun Wen,Wen Zhong,Sibei Zou,Mingli Fu,Limin Chen,Daiqi Ye
Self-assembled CeO 2 with 3D hollow nanosphere, nanoparticle and nanocube morphologies were prepared and used to support Cu particles. The obtained samples (denoted as Cu/CeO 2 -hs, Cu/CeO 2 -np and Cu/CeO 2 -nc, respectively) were tested for the reverse water-gas shift (RWGS) reaction. Under the reaction conditions, V (H 2 ): V (CO 2 ) = 3:1 and weight hourly space velocity (WHSV) = 300,000 mL g −1 h −1 , the Cu/CeO 2 -hs sample exhibited the best catalytic performance among the as-prepared catalysts. In order to reveal the key factors affecting the catalytic performance, the physicochemical properties of the catalysts were analyzed by XRD, BET, SEM, TEM, H 2 -TPR, quasi in-situ XPS and in situ UV-Raman techniques. The results point out that the particle size of Cu is not the rate-determining factor while the amount of surface oxygen vacancies is highly correlated with the catalytic reaction rate. In situ UV-Raman and in situ DRIFTS experiments indicate the formation of bidentate carbonate and formate species on oxygen vacancy sites which is thought to be the key intermediates for the RWGS reaction. These findings unravel the crucial roles of surface oxygen vacancies on CO 2 adsorption and activation and also highlight a feasible way for the design of highly efficient catalysts for the important RWGS reaction in chemical industry.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SEPARATION SCIENCE
·
2025
·Vol. 48
·期 7
·e70200
·
IF 2.8
Chen Huifan,Zhou Huimin,Wang Zhenguo,Hu Xialin,Yin Daqiang
Benzotriazole ultraviolet stabilizers (BUVSs) are emerging persistent pollutants, due to the weak polarity and wide log K ow values, there is no general optimal analytical method for BUVSs. In this study, a solid-phase extraction-ultra performance liquid chromatography tandem mass spectrometry (SPE-UHPLC/MS/MS) method was developed for the simultaneous determination of seven BUVSs in the aqueous environment, based on the generalized electrospray ionization (ESI+) mode. The conditions of ESI-UHPLC-MS/MS detection and SPE were systematically optimized. A 50 mm UHPLC column at a column temperature of 40°C gave the highest response for the target BUVSs using methanol–0.1% (v/v) formic acid solution as the mobile phase. The effects of the four packed SPE cartridges (HLB, HC-C 18 , LC-C 18 and phenyl columns) and sample pH (3.0–9.0) on the SPE enrichment were comparatively analyzed, and the optimum condition was HLB cartridges at sample pH 3.0. The SPE elution solvent was optimized as 5 mL methanol + 5 mL dichloromethane (V:V = 1:1). The seven target BUVSs were quantified by isotope internal standard method, and the linear range of the standard curve was wide (0.1–50 ng∙L −1 ) with the correlation coefficient R 2 > 0.998. The recoveries of the spiked standards for the purified water as well as the sample of Huangpu River were 80.6%–105.2% and 53.9%–103.7% (except UV-P: 141.6%–148.7%), respectively. The relative standard deviations (RSDs) of the intra-day were 4.1%–18.0%; and the RSDs of the inter-day were 3.4%–18.8%, respectively. The limits of detection of the method were in the range of 0.050–0.406 ng∙L −1 . Compared with the reported studies, this method is more sensitive and stable, and the UHPLC-MS/MS instrument based on the ESI ionization source is more generalizable.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2023
·
IF 6.1
Jia Lin Wang,Chen Yi Zhang,Xuan Li,Xiao Dong Wang,Min Cao,Tadao Asami,Xiao Hui Xiong,Jian Song Chen,Yi Chen Lu
Organophosphorus magnetic molecularly imprinted polymers (OMMIPs) with high adsorption capacities (13.5–83.8 mg g–1) and good applicability were developed for efficient extraction and pre-concentration of multiple organophosphorus pesticides (OPPs) from foodstuffs. The OMMIP-based sample pretreatment coupled with low-temperature plasma ambient ionization mass spectrometry achieved rapid screening for 90 kinds of pesticides at default maximum residue limits of National Standard (GB 2763-2021) in nine types of agro-products. The OMMIP-based liquid chromatography coupled with triple quadrupole mass spectroscopy assay demonstrated rapid magneto-actuated isolation, efficient removal of matrix interference, and reduced signal suppression, resulting in a short detection time (30 min), compliant recoveries (60.1–127.5%), low detection limits (0.0001–0.073 μg g–1), and simultaneous quantification of multi-pesticides. The yolk–shell-structured OMMIPs (Fe3O4@mTiO2@MIPs) demonstrated additional benefits of excellent ultraviolet light-driven catalytic degradation activity toward OPPs, making them eco-friendly for self-cleaning regeneration and reducing laboratory pesticide discharge. This work highlights the potential of OMMIPs for high-throughput and in situ pesticide monitoring in modern large-scale agricultural markets.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Peng-Fei Li,Chun-Li Hu,Bing-Xuan Li,Fang Kong,Jiang-Gao Mao
Two UV inorganic yttrium selenite optical materials, namely, Y(HSeO 3 )(SeO 3 )(H 2 O)·(H 2 O) (1) and Y 2 (SeO 3 ) 2 (SeO 4 )(H 2 O) 2 ·(H 2 O) 0.75 (2), have been synthesized successfully by hydrothermal reactions . Of these, Y 2 (SeO 3 ) 2 (SeO 4 )(H 2 O) 2 ·(H 2 O) 0.75 (2) is a new mixed valent selenium oxide containing Se(IV) and Se(VI) cations simultaneously. Y(HSeO 3 )(SeO 3 )(H 2 O)·(H 2 O) (1) shows a 3D structure composed of 2D yttrium selenite layers linked by O−H···O bonds. Y 2 (SeO 3 ) 2 (SeO 4 )(H 2 O) 2 ·(H 2 O) 0.75 (2) exhibits a 3D structure composed of 2D yttrium selenite layers connected by SeO 4 tetrahedron. Y(HSeO 3 )(SeO 3 )(H 2 O)·(H 2 O) (1) crystallized in a chiral space group P 2 1 2 1 2 1 and could display a moderate SHG intensity about 0.7 times of the commercial KH 2 PO 4 (KDP). Its powder laser damage threshold quantity was estimated to be 120.2 MW/cm 2 , which is about 46.2 times that of AGS (2.6 MW/cm 2 ). UV–vis–NIR spectra reflectance spectra showed that these solids are wide band gap compounds with Eg of 5.5 and 5.1 eV respectively. Theoretical calculations disclosed that Y(HSeO 3 )(SeO 3 )(H 2 O)·(H 2 O) (1) is an indirect band gap structures and its bandgaps is determined by O and Se atoms.
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2023
·
IF 5.9
Ying-Jie Yu,Chen-Yu Li,Ren-Cheng Tang
The one-step dyeing and finishing of tussah fiber have advantages of short process, high efficiency, and energy and water saving. Additionally, to upgrade the functionalities of tussah silk fiber using natural chemicals with environmental benefits can increase its applicability. In this work, the combined application of plant extracts and acid dyes was presented for simultaneously imparting colorful shades, antioxidant activity , antibacterial activity, and UV protection capability to tussah silk. The stability of tannic acid , baicalin , and their mixtures with acid dyes was first discussed, and the colors and functionalities of dyed and finished tussah silk were evaluated. Tannic acid had less effect on the colors of dyed tussah silk. C.I. Acid Blue 113 was not stable in hot baicalin solution, and its pre-heated mixture with baicalin dyed tussah silk to dull red hue rather than blue hue. The bright blue and green colors of tussah silk were obtained by dyeing with anthraquinone and triarylmethane dyes, but their hues were affected by baicalin due to the light yellow color of baicalin and the matching of colors. Tannic acid exhibited better antibacterial property than baicalin on tussah silk, while baicalin had better antioxidant and UV protection capability than tannic acid . This work demonstrates that the one-step dyeing and finishing of tussah silk with acid dyes and plant extracts are feasible. However, special attention should be paid to the color changes of individual dyes for pale dyeing.
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2021
·
IF 7.514
Guohao Cheng,Juan Zhao,Xiaoyue Wang,Can Yang,Shiying Li,Tong Lu,Xiang Li,Xuefeng Wang,Guifen Zhu
The effective analysis of cephalosporin antibiotics in food animals has attracted considerable attention. Herein, a high-performance liquid chromatograph equipped with a UV method based on molecularly imprinted-solid phase extraction (MISPE-HPLC-UV) was developed for preconcentration, cleanup and determination of ceftiofur sodium (CTFS) in food samples. In this method, an eco-friendly molecularly imprinted polymer (MIP) was synthesized and employed as an adsorbent, which exhibited excellent selectivity towards CTFS in water, and adsorption equilibrium could be reached within 1 h. Under the optimized conditions, good linearity was obtained for CTFS in the range of 0.005–1.0 mg L −1 with a lower LOD of 0.0015 mg L −1 , and the average recoveries were higher than 91.9% (RSD less than 8.5%) at three spiked levels in milk, chicken, pork and beef samples. After 20 cycles, the recovery of the MISPE cartridge for CTFS was still higher than 95%, which proved that the MISPE-HPLC-UV method was highly sensitive and selective for the analysis of CTFS in food samples.
✓ 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）