COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2022
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IF 5.518
Jijie Yuan,Furui He,Qiyan Wen,Gaobo Yu,Jiacheng Li,Yuhong Feng
The development of a green-friendly intelligent drug delivery system with maximum drug utilization is the hot spot in the current era of great health and the grand strategy of protecting the environment. However, the evolution of interface multi-scale structure and the micro-mechanism of drug controlled-release/extended-release in intelligent drug-loading system are still common basic research issues in related application development. Therefore, we innovatively explored the effects of pH and UV on the stability, drug-loading and release behavior of coumarin-based alginate (SA-AMC) emulsion by the scientific research method combination of computer simulation and experimental analysis. The simulation results showed that the shrinkage of SA under acidic condition and the dimerization of AMC at 365 nm UV could improve the stability of the emulsion. Meanwhile, the drug-loading capacity and extended-release effect of the emulsions were closely related to the stability of the emulsions, and the drug molecules could be controlled release under alkaline condition. The experimental results were in good consistent with the simulation results, which indicated that the computational simulation had the excellent fitting effect on the experimental conditions, and could understand the behavior of emulsifier molecules at the micro-scale while providing theoretical guidance for the design and optimization of drug delivery system for drug-loading emulsions.
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JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
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2021
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IF 5.279
Yu-gang Shi,Chen-min Zhu,Dong-hui Li,Ze-yu Shi,Qing Gu,Yue-wen Chen,Jie-qian Wang,Rammile Ettelaie,Jian-She Chen
An excellent bactericidal effect of octyl gallate (OG)-mediated photodynamic inactivation (PDI) against foodborne pathogens (Escherichia coli and Staphylococcus aureus) was evaluated in relation to the mode of action. UV-A irradiation (wavelength, 365 nm; irradiance, 8.254 ± 0.18 mW/cm2) of the bacterial suspension containing 0.15 mM OG could lead to a >5-log reduction of viable cell counts within 30 min for E. coli and only 5 min for S. aureus. Reactive oxygen species (ROS) formation was considered the main reason for the bactericidal effect of OG + UV-A light treatment because toxic ROS induced by OG-mediated PDI could attack the cellular wall, proteins, and DNA of microbes. Moreover, the bactericidal effect, as well as the yields of ROS, depended on OG concentrations, irradiation time, and laser output power. Furthermore, we prepared an edible photodynamic antimicrobial membrane comprising electrospun cyclodextrin nanofibers (NFs) by embedding OG. The resultant OG/HPβCD NFs (273.6 μg/mL) under UV-A irradiation for 30 min (14.58 J/cm) could cause a great reduction (>5-log) of viable bacterial counts of E. coli. The in situ photodynamic antibacterial activity of OG/HPβCD NF-based packaging was evaluated during the Chinese giant salamander storage. Overall, this research highlights the dual functionalities (antibacterial and photodynamic properties) of OG as both an antibacterial agent and photosensitizer and the effectiveness of electrospun NFs containing OG as an active antibacterial packaging material for food preservation upon UV light illumination.
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TALANTA
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2021
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IF 6.057
Xin-Qiao He,Yuan-Yuan Cui,Xiao-Hui Lin,Cheng-Xiong Yang
Development of novel functionalized adsorbents for efficient magnetic solid phase extraction (MSPE) is essential for promoting their versatile applications in sample pretreatment. Herein, we report the fabrication of a new polyethyleneimine-600 decorated magnetic microporous organic network nanosphere (Fe 3 O 4 @MON-PEI 600 ) for effective MSPE of trace non-steroidal anti-inflammatory drugs (NSAIDs) from different water samples. The core-shelled Fe 3 O 4 @MON-PEI 600 integrates the synergistic effects of Fe 3 O 4 , MON and PEI 600 , providing facile and effective extraction to NSAIDs via multiple hydrogen bonding , π-π and hydrophobic interactions. The inner MON shell employs π-π and hydrophobic interaction sites and the outer PEI-600 coat acts as the hydrogen bonding doner/receptor, which affords good extraction performance for NSAIDs. Under optimal conditions, the Fe 3 O 4 @MON-PEI 600 -MSPE-HPLC-UV method gives wide linear range (0.14–400 μg L −1 ), low limits of detection (0.042–0.149 μg L −1 ), good precisions (intra-day and inter-day RSDs < 4.5%, n = 6), and large enrichment factors (97.0–98.2). Extraction mechanisms and selectivity of Fe 3 O 4 @MON-PEI 600 are evaluated in detail. Moreover, Fe 3 O 4 @MON-PEI 600 is successfully applied to enrich the trace NSAIDs in different water samples with the concentrations of 0.7 and 0.8 μg L −1 for 1-naphthylacetic acid, 0.5 and 0.1 μg L −1 for naproxen as well as 0.7 μg L −1 for ibuprofen , respectively. The developed method not only affords a novel and efficient magnetic adsorbent for NSAIDs in aqueous media at trace level, but also provides a new strategy for the rational design and synthesis of multiple functionalized MON composites in sample pretreatment.
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JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
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2020
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IF 3.442
Xiuling Xue,Xiuwen Gong,Xiaoyi Chen,Bor-Yann Chen
In recent years, environmental pollution caused by volatile organic compounds (VOCs) has posed a great challenge to environmental protection. This first-attempt study provided a novel facile chemical precipitation-reduction method to construct Ag/Ag 2 O@TiO 2 (A/AO@TO) photocatalyst for the removal of gaseous toluene. The introduction of Ag in the presence of NaBH 4 with N 2 purging inhibited the passivation of Ag 2 O and thus enhanced the stability of A/AO@TO. A/AO@TO exhibited outstanding photocatalytic performance toward gaseous toluene under different light sources like UV light , simulated sunlight and natural light, which were 99.3%, 48.3% and 28.5%, respectively. The superior photocatalytic performance could be attributed to the synergy effect of p-n heterojunction between Ag 2 O and TiO 2 and the surface plasmon resonance (SPR) effect of Ag, which facilitate the separation of charge carriers and thus suppress the recombination rate of them, and enhance the light response. The active species like ·OH, ·O 2 − and h + were contributed to the excellent photocatalytic performance. The study provided a new method for the fabrication of A/AO@TO photocatalyst and introduce p-n scheme A/AO@TO as a feasible natural sunlight photocatalyst for further applications.
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PROGRESS IN ORGANIC COATINGS
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2023
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IF 6.6
Ling Sun,Lan Ding,Qiuyan Zhang,Jinke Yu,Yufei Cao,Xiaohui Liu,Yuanlin Ren,Yuesheng Li
Environmental engineering placed green demands on the functional modification of textiles. Here, the combination of bio-based tannic acid, sophora flower extract and metal salts was used to manufacture silk fabrics with flame retardancy and UV resistance via a facile impregnation strategy. With different metal salts treated, the modified silk fabrics named silk/TA/SFE-TE, silk/TA/SFE-Fe and silk/TA/SFE-Cu achieved self-extinguishing in the vertical burning test, with limiting oxygen index values of 31.7 ± 0.4 %, 30.2 ± 0.2 % and 30.9 ± 0.3 %, respectively. In the cone calorimetry test, the peak heat release rate values of the three silk fabrics modified with metal salts were all significantly suppressed, and the total smoke production values of silk/TA/SFE-TE and silk/TA/SFE-Fe were reduced from the original 0.178 m 2 to 0.126 m 2 and 0.138 m 2 , respectively. Furthermore, silk/TA/SFE-TE, silk/TA/SFE-Fe and silk/TA/SFE-Cu displayed high ultraviolet protection factor values and thus had good UV resistance, owing to the presence of tannic acid and sophora flower extract. Most importantly, the flame retardancy and UV resistance of the three silk fabrics modified with metal salts were still superior to those of the original silk fabrics after 30 washing cycles. In short, this facile route for the preparation of functionalized silk fabrics provides a novel idea for the development of advanced textiles.
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CHEMICAL ENGINEERING JOURNAL
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2023
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IF 15.1
Linlu Shen,Hongyi Wang,Jing Kang,Jimin Shen,Pengwei Yan,Yingxu Gong,Jiaxu Zhang,Gang Fu,Shuyu Wang,Yizhen Cheng,Shengxin Zhao,Zhonglin Chen
In this study, the ultraviolet/peroxymonosulfate (UV/PMS) process was found to be an efficient and safe strategy for simultaneously controlling NDMA during the degradation of N,N-dimethylhydrazine compounds, such as 1,1,1′,1′-Tetramethyl-4,4′-(methylene-di-p-phenylene) disemicarbazide (TMDS). The distinct roles of sulfate radicals (SO 4 − ), hydroxyl radicals (HO ), PMS, and UV in TMDS degradation as well as NDMA formation and elimination, have been elucidated, involving the kinetics and multiple-path transformation mechanisms. Moreover, to assess the feasibility of this process, a comprehensive toxicity assessment of treated water for zebrafish embryos was conducted. Mineralization analysis and an assessment of electrical energy per order (EE/O) were performed on actual water samples. The results indicate that SO 4 − , HO , PMS, and UV together degraded TMDS, but only SO 4 − and PMS led to NDMA formation. UV irradiation may coordinate SO 4 − and HO to overcome the energy barriers of NDMA elimination by providing continuous energy. The degradation of TMDS involved hydroxylation, radical addition, bond cleavage and nitrosation. Notably, NDMA formation may be closely related to the electron transfer between SO 4 − or PMS and TMDS. Subsequently, the generated NDMA was controlled through photocleavage, radical addition, and hydroxylation. Additionally, the results of toxicity evaluation and EE/O analysis suggest UV/PMS is safe and has the potential for treating N,N-dimethylhydrazine compounds-containing water.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2023
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IF 8.2
Shao-Chao Sun,Shao-Fei Sun,Ying Xu,Jia-Long Wen,Tong-Qi Yuan
Deep eutectic solvents (DESs) have emerged as promising and eco-friendly solvents for the efficient extraction of lignin from biomass due to their low cost and environmental benefits. Nevertheless, the prevalent use of acidic DESs in lignin extraction often results in excessive depolymerization and recondensation of lignin, thereby impeding its downstream applications. In this study, we developed a range of alkaline DESs (ADESs), both pure and peroxide-containing, for the extraction of high-quality lignin from bamboo. Moreover, carbon dioxide (CO 2 ) was employed for the precipitation and regeneration of the extracted lignin. The obtained lignin fractions were comprehensively characterized in terms of yield, purity, morphology, solubility, structural features, and anti-UV/oxidant activity. The results showed that the monoethanolamine-based ADES demonstrated superior performance among the pure ADESs. Structural analysis confirmed the well-preserved substructures of lignin fractions obtained using ADESs, with β-O-4 bond retention ranging from 49.8 % to 68.4 %. The incorporation of a suitable amount of peroxide improved lignin yield, morphology, solubility, and anti-UV/oxidant activity. Additionally, the anti-UV/oxidant activity of lignin exhibited a positive correlation with its phenolic hydroxyl content. This study provides a valuable reference for the green and sustainable production and valorization of lignin within the existing biorefinery framework.
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ACS Applied Materials & Interfaces
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2023
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IF 9.5
Qing Ma,Yufeng Zhang,Yini Huangfu,Shangdong Gao,Canhao Zhou,Hui Rong,Liandong Deng,Anjie Dong,Jianhua Zhang
To effectively shield the full band of ultraviolet (UV) radiation and provide desirable protection, the combination of inorganic and organic filters was often used to protect human skin from the serious harm of UV exposure. However, the incompatibility of different filters and their mutual negative effect limit the production of multifilter sunscreen. In addition, the hazard of reactive oxygen species (ROS) produced by inorganic filters after UV exposure and the skin permeability of organic filters remain unresolved problems. In this study, titanium dioxide (TiO2) and diethylamino hydroxybenzoyl hexyl benzoate (DHHB), two kinds of common filters with complementary UV shielding range, were first encapsulated into large mesoporous silica nanoparticles (MSN, ∼300 nm) to obtain MSN-TiO2 and MSN-DHHB. Also, a SiO2 coating was then made to seal and stabilize the MSN-TiO2 and MSN-DHHB. The structure, UV screen function, and safety of the SiO2-coated filters, MSN-TiO2@SiO2 and MSN-DHHB@SiO2, were evaluated. The good mechanical stability exhibited by the solid SiO2 layer prevented the release and skin penetration of the sealed DHHB and the photocatalysis of TiO2. Furthermore, the combination of MSN-TiO2@SiO2 and MSN-DHHB@SiO2 in sunscreen cream showed excellent UV shielding performance on covering the whole UV radiation range without mutual interference. Therefore, coating SiO2 over MSN is a feasible strategy for entrapping various filters to improve their photostability, preventing skin penetration and ROS generation, and enhancing their compatibility with different sunscreen formulations.
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FOOD CHEMISTRY
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2023
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IF 8.8
Li Gao,Piao Xu,Jiaoyan Ren
This work described a sensitive and economical HPLC-UV method with FDAA derivatization to simultaneously detect 36 D/ l -amino acids, which provides higher sensitivity and lower cost than other HPLC-based methods. It was validated for linearity range (8–1000 µmol/L), limits of detection (2.68–62.44 pmol/L), limits of quantification (2.93 to 208.13 pmol/L), intraday precision (0.30 % − 5.31 %), interday precision (1.96 % − 8.04 %) and accuracy (86.53 % − 121.46 %). This method was then applied in the determination of D/L- amino acids abundance in fermented and unfermented food materials and showed the characteristics of each type of foods. The method also demonstrated good performance in another application case for the discrimination of different types of food materials based on D/L- amino acids profile. It emphasizes the ability of the method to study the characteristics, distribution and abundance of d -amino acids in foods and their potential application in food quality control.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2018
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IF 11.698
Shanshan Su,Chengjin Cao,Yaping Zhao,Dionysios D. Dionysiou
Roxarsone (ROX) is extensively used as a feed additive which tends to leave toxic inorganic arsenic (As) in the natural environment. A composite of reduced graphene oxide and carbon nanotubes was impregnated with goethite designated as α-FeOOH@GCA and tested as an integrated catalyst and adsorbent for ROX decontamination. Nearly 100% of the ROX was transformed in α-FeOOH@GCA activating persulfate (PS) under UV 365 irradiation system at relatively low dosage of the α-FeOOH@GCA catalyst (250 mg L −1 ) in 120 min. The As(V) released in the ROX oxidation was simultaneously adsorbed onto the surface of the α-FeOOH@GCA. A possible ROX transformation pathway is proposed. The As(V) adsorbed on catalyst was recovered and used to form an efficient Ag 3 AsO 4 photocatalyst. This work further extends the oxidation-adsorption technology in solving organoarsenical contamination without producing secondary pollution.
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Nanoscale
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2017
·Vol. 9
·期 39
·15044-15055
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IF 7.367
Dong Li,Guanjie Xing,Shilin Tang,Xiaohong Li,Louzhen Fan,Yunchao Li
We report herein a heat-triggered precursor slow releasing route for the one-pot synthesis of ultrathin ZnSe nanowires (NWs), which relies on the gradual dissolving of Se powder into oleylamine containing a soluble Zn precursor under heating. This route allows the reaction system to maintain a high monomer concentration throughout the entire reaction process, thus enabling the generation of ZnSe NWs with diameter down to 2.1 nm and length approaching 400 nm. The size-dependent optical properties and band-edge energy levels of the ZnSe NWs were then explored in depth by UV-visible spectroscopy and cyclic voltammetry, respectively. Considering their unique absorption properties, these NWs were specially utilized for fabricating photoelectrochemical-type photodetectors (PDs). Impressively, the PDs based on the ZnSe NWs with diameters of 2.1 and 4.5 nm exhibited excellent responses to UVA and near-visible light, respectively: both possessed ultrahigh on/off ratios (5150 for UVA and 4213 for near-visible light) and ultrawide linear response ranges (from 2.0 to 9000 μW cm−2 for UVA and 5.0 to 8000 μW cm−2 for near-visible light). Furthermore, these ZnSe NWs were selectively doped with various amounts of Mn2+ to tune their emission properties. As a result, ZnSe NW film-based photochromic cards were creatively developed for visually detecting UVA and near-visible radiation.
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JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
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2014
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IF 2.829
Shufang Wang,Lulin Chen,Jing Leng,Pinghong Chen,Xiaohui Fan,Yiyu Cheng
Gui-Zhi-Tang was considered to be the most famous formula in Shang-Han-Lun, treating 32 symptoms of disease after adding up or cutting down crude drugs. The chemical constituents in Gui-Zhi-Tang were comprehensively studied by rapid resolution liquid chromatography quadrupole time-of-flight mass spectrometry (RRLC-Q-TOF-MS) combined with rapid resolution liquid chromatography – diode array detector – ion trap mass spectrometry (RRLC-DAD-IT-MS) in this work, and a total number of 187 compounds were detected. Systematic diagnostic ion filtering strategies were recommended for flavonoids and oleanane-type triterpenoids, respectively. On the basis of the summarized strategies, compounds in Glycyrrhizae could be easily classified into flavones, isoflavones, flavanones or chalcones with special structures, and triterpene saponins with different sugar moieties. Consequently, among 187 compounds, 144 ones were confirmed or assumed tentatively. In addition, nine potential novel compounds were reported for the first time. This approach provided a rapid method for characterizing the constituents in Gui-Zhi-Tang, and would be also helpful in other TCM formulae analysis.
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