ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Fengqing Chen,Yan Feng,Feixiang Yin,Teng Huang,Qiao Kang,Dan Xie,Junhui Zhu,Yiping Wen,Baiyu Jiang,Jinfeng Dai
Multifunctional value-added biodegradable materials are significant for addressing issues of plastics waste in a green, cost-effective, and energy-saving way. In this work, the nano mica (Mica) was both exfoliated and interfacial double esterified by critic acid (CA) in a facile one-step method to achieve multifunctional biodegradable polybutylene adipate/terephthalate (PBAT)/thermoplastic starch (TPS) films. As a result, the obtained composite with 1 phr Mica (P4T6-1Mica) demonstrated excellent comprehensive performances under the coordination of esterification and acidolysis of CA. The crystallinity and tensile strength of P4T6-1Mica were 240 and 56% higher than those of original composite (P4T6C0.5), attributed to the heterogeneous nucleation of Mica and improved interfacial compatibility. P4T6-1Mica also exhibited a lower water vapor transmission rate (WVT) of 73.39 g/m2·24 h, representing a 39.3% improvement over P4T6C0.5. The decreased WVT was assigned to the hindering paths caused by CA esterification and acidolysis and the original barrier of Mica. At 10 weeks, the biodegradation rates for P4T6C0.5, P4T6-1Mica, and P4T6-2Mica were 56.3, 37.5, and 33.1%, respectively, indicating regulable biodegradation. The incorporation of exfoliated Mica even enhances UV resistance and transmittance of the film. The design of double esterification and a one-step process offers sustainable, affordable, and energy-saving approaches for developing multifunctional biodegradable materials to address plastic pollutions.
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2022
·
IF 11.357
Bibai Du,Yuqing He,Bowen Liang,Jiehua Li,Dan Luo,Hui Chen,Liang-Ying Liu,Ying Guo,Lixi Zeng
Triazine UV filters are an important class of UV filters, but knowledge on their environmental occurrence and human exposure remains largely unknown. In this study, we performed a targeted analysis of 17 emerging triazine UV filters in indoor dust and indoor air from South China based on a newly developed LC–MS/MS method. A total of 12 of the 17 emerging triazine UV filters were first positively detected in the dust and air samples. Ethylhexyl triazone (EHT) and bis-ethylhexyloxyphenol methoxyphenyl triazine (BEMT) were identified as the most abundant compounds. The median total concentrations of triazine UV filters reached 3860 ng/g in indoor dust and 1590 pg/m3 in indoor air. Gas-particle partitioning analysis showed that triazine UV filters were predominant in the particle phase in ambient air. Significant concentration correlations were observed among most triazine UV filters. The estimated daily intake of triazine UV filters through dust ingestion and air inhalation for toddlers under high-end exposure scenarios was up to 839 ng/kg bw/day, but a lack of toxic thresholds hampers accurate risk assessment. Our work highlights another emerging class of UV filters that significantly contribute to indoor chemical mixtures and expresses concerns over their occurrence and human exposure.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Sustainability
·
2025
·Vol. 17
·期 21
·9882
·
IF 3.3
Yi-Fan Zhang,Hong-Wei Xu,Nan Huang
The non-oxidizing antimicrobial 2-Methyl-4-Isothiazolin-3-one (MIT) poses a significant environmental risk given its frequent detection in municipal wastewater. This study showed that the combination of Vacuum UV/UV (VUV/UV) and persulfate (PDS) efficiently achieved the rapid transformation and removal of 10 μM MIT within 90 s, which is much faster than UV, UV/PDS, and VUV/UV. Increasing the PDS dosage improved MIT degradation, whereas changes in pH between 4 and 10 had little effect. Radical quenching experiments showed that 93% of the MIT oxidation was attributable to the hydroxyl radical (•OH) and the sulfate radical (SO4•−). SO4•−and •OH at concentrations of 8.6 × 10−12M and 1.5 × 10−12M accounted for 32% and 61% of the MIT degradation, respectively, and the greater contribution of •OH was attributed to its higher reaction rate constant with MIT compared to SO4•−. Sulfate had a negligible impact on the radical concentrations. Chloride (1 mM) reduced the SO4•−and •OH concentrations by 61% and 27%, respectively. And the SO4•−contribution to MIT degradation fell to 19%. Nitrate (5 mM) readily quenched •OH but minimally affected SO4•−. The •OH concentration decreased by 79%, reducing its contribution to 27%. Bicarbonate/carbonate (5 mM) simultaneously reduced the SO4•−and •OH by 26–30% and had little effect on their contributions. Because of the quenching effect of organic matter and inorganic anions on radicals, secondary effluent inhibited the degradation of MIT. After a 120 s treatment, the total organic carbon, UV254, and fluorescence regional integration were reduced by 5%, 8%, and 17–24%, respectively. This study provides a quantitative analysis of how inorganic ions alter the concentrations and contributions of •OH and SO4•−, elucidating the MIT removal mechanisms in VUV/UV/PDS for sustainable wastewater reclamation.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2016
·
IF 7.145
Xubo Zhao,Mingzhu Qi,Shuo Liang,Kun Tian,Tingting Zhou,Xu Jia,Jiagen Li,Peng Liu
Novel photo- and pH dual-sensitive amphiphilic copolymers containing photolabile o-nitrobenzyl (NB) groups were designed via combination of ATRP, hydrolyzation, and simple esterification reaction and self-assembled into stimuli-regulated amphiphilic micelles in aqueous solution. On the basis of the optimization of the morphology and particle size of the micelles via modulating the number of the photocleavable o-nitrobenzyl acrylate (NBA) units, the unique ones assembled from PEG43-b-P(AA76-co-NBA35-co-tBA9) with an average hydrodynamic diameter (Dh) of 163 nm was selected as a potential drug delivery system (DDS) for UV-triggered delivery of doxorubicin (DOX). The micelles possessed a favorable drug-loading capacity (DLC) of 27.5%, with the hydrodynamic diameter of 213 nm after DOX-loading. Most importantly, the DOX-loaded PEG43-b-P(AA76-co-NBA35-co-tBA9) micelles exhibited a cumulative DOX release ratio of only 3.69% in the simulated physiological medium within 6 days without UV-irradiation, indicating their potential as leakage-free DDS. As in the acidic media mimicking the tumor microenvironment, a high cumulative DOX release ratio of 74.70% was achieved within 6 days after UV-irradiation for 20 min, showing a sustained release behavior. Under UV-irradiation, the photolabile o-nitrobenzyl moieties were cleaved off, the amphiphilic copolymer transformed into a water-soluble polymer, favoring the metabolism of drug carriers, and the micelles were demicellized to accelerate the drug release in a triggered or on-demand manner.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2015
·
IF 4.097
Xiaotie Cai,Weijie Yang,Lan Huang,Qiuhua Zhu,Shuwen Liu
We recently developed a unique and sensitive fluorescence-turn-on probe (THP-1, a C-6 unsubstituted tetrahydropyrimide) for critical micelle concentration (CMC) of ionic surfactants based on its unusual properties: no emission in micelles but strong aggregation-induced emission (AIE) in solution. Herein other fifteen THPs (THP-2–16) were designed and synthesized to investigate into structure influence on the CMC values of ionic surfactants (anionic SDS , cationic CTAB and zwitterionic CHAPS) and their fluorescent sensitivities. All these THPs show the unusual properties in these surfactant solutions as THP-1 and can be used as fluorescence-turn-on probes. The determined CMC values are in the range reported. It was found that 4-CF 3 is a crucial functional group for increase of sensitivities of THP probes. Compared with THP-1, the concentration detecting CMC decreased by 10.8 times but fluorescence intensity increased 2.8 times. It worth mentioning that the changes in the fluorescent intensity of THPs about CMC of SDS and CTAB are so sensitive that the CMC values of SDS and CTAB can be detected using a simple UV light . In addition, we investigated into the practical applications of THPs in semi-micro and high throughput CMC determination. Since AIE fluorophores and surfactants have wide applications, it is expected these highly sensitive fluorescence-turn-on probes for CMC based on unusual no emission in surfactant micelles but strong AIE in surfactant solutions can be used in wide practical application areas.
✓ 已验证
DOI
高影响因子
TALANTA
·
2017
·
IF 4.162
Xiu Li,Guang Chen,Jianjun Liu,Yuxia Liu,Xianen Zhao,Ziping Cao,Lian Xia,Guoliang Li,Zhiwei Sun,Shijuan Zhang,Hua Wang,Jinmao You
A rapid, accurate and sensitive method, using the stable isotope labeling (SIL), microwave-assisted dispersive liquid-liquid micro extraction (MADLLME) and the ultra-high performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS), was developed and validated for the determination of hydroxyl UV Filters in environmental water samples. A pair of new isotopic tags D 0 -/D 3 -1-methylindole-3-acetic acid (D 0 -/D 3 -MIAA) is synthesized, with which a simple yet efficient pretreatment MADLLME-SIL is developed. Under the optimized conditions (80 ℃, 240 W, 180 s), the sample pretreatment including analyte extraction, pre-concentration and isotope labeling can be finished conveniently in only 9 min. D 0 -/D 3 -MIAA labeling improves the chromatographic retention by strengthening the hydrophobicity and enhances the MS response for 3–4 orders of magnitude. Excellent linearity is established by the H/D ratios of 1/10–10/1 with the correlation coefficients >0.9990. The quite low detection limits (0.54–1.79 ng/L) are achieved, ensuring the trace detection. This method is successfully applied to a series of environmental water samples. The recoveries (93.2%~103.5%) are significantly improved and the analysis time is largely reduced (<15 min). The excellent sensitivity, accuracy, recovery, and efficiency demonstrate this MADLLME-SIL-LC-MS/MS method a superior alternative for the analysis of UV filters in water samples.
✓ 已验证
DOI
高影响因子
Journal of the Iranian Chemical Society
·
2019
·Vol. 17
·期 2
·499-506
·
IF 1.742
Ge Dandan,Zhong Guoqiong,Zhou Xiaojuan,Dai Enrui,Wang Ying
A rapid and reliable procedure named as elevated temperature-assisted surfactant-enhanced emulsification microextraction based on solidification of floating organic drop was developed for determination of UV filters in environmental water samples followed by high-performance liquid chromatography with diode array detection analysis. In the present work, a mixture of extraction solvent (1-undecanol) and emulsifier (Tween 80) was injected rapidly into the sample solution heated at an elevated temperature. The preheated sample dispersed the extraction solvent into sample solution immediately on injection of the mixture. Various parameters influencing the extraction efficiency including type and volume of extraction solvent, type and concentration of surfactant, temperature of aqueous solution, extraction time and solution pH were investigated and optimized. Under the optimum conditions, low limits of detection (0.8–1.4 ng mL −1 ) and limits of quantification (2.7–4.0 ng mL −1 ) were obtained. The precision of this method was investigated at 10 ng mL −1 , and the relative standard deviations ranged between 1.2 and 5.1% for intra-day and inter-days determinations. The proposed method was successfully applied to determine the UV filters in genuine water samples with relative recoveries ranged from 88.8 to 98.2%.
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2022
·
IF 9.231
Kaige Zhang,Rong Guo,Yunhe Wang,Qiujun Nie,Guifen Zhu
In our work, hydrophobic thymol-based deep eutectic solvents (DESs) with strong reducibility, a lower density than water, and a slightly higher melting point than room temperature were synthesized. Based on these solid DESs, one-step derivatization and temperature-controlled vortex-assisted liquid-liquid microextraction based on the solidification of a floating DES (TC-VA-LLME-SFDES) via UV–Vis spectrophotometry for the rapid determination of total iron was developed. The derivatization and TC-VA-LLME were carried out simultaneously by the addition of DES as both the reducing agent and extraction solvent. After optimization, the calibration curve (5–250 μg L −1 , R 2 = 0.9982), limit of detection (1.5 μg L −1 ), limit of quantitation (5.0 μg L −1 ), precision (≤4.0%) and enrichment factor (92) was obtained. This method was applied for the determination of total iron in water and food samples with satisfactory recoveries (85.4–106.2%). One-step derivatization and TC-VA-LLME only required 2 min. Furthermore, this method opened up the application of solid DESs in liquid–liquid microextraction.
✓ 已验证
DOI
高影响因子
Journal of the Iranian Chemical Society
·
2022
·Vol. 19
·期 6
·2543-2551
·
IF 2.271
Ge Dandan,Zhang Yi,Deng Xiujun,Yuan Lin
In this study, a zinc-based MOF material-[Zn 2 (btc)(atrz)(H 2 O) 2 ]·2H 2 O (btc = benzene-1,2,4-tricarboxylic acid, artz = 4-amino-1,2,4-triazole) was designed and applied as a sorbent for the vortex-assisted micro-solid-phase extraction (VA-µ-SPE) of UV filters from water and toner samples, followed by high performance liquid chromatography-diode array detector determination. Parameters affecting VA-µ-SPE such as sorbent amount, desorption solvent, vortex time, desorption time, solution pH and salt concentration were optimized. Under the optimized conditions, linearity of the UV filters was obtained in the range of 5(10)–1000 ng mL −1 , and the correlation coefficient was higher than 0.9959. The limits of detection ranged between 1.5 and 3.2 ng mL −1 and limits of quantification were in the range of 4.2–10 ng mL −1 . The relative standard deviations were in the range of 2.3–7.1%. The recoveries for the spiked real samples were in the range of 90.7–111.3% with relative standard deviation less than 7.2%. It proved to be a fast, accurate and convenient method for extraction of UV filters from different matrices.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）