JOURNAL OF HAZARDOUS MATERIALS
·
2018
·
IF 6.434
Qiongfang Wang,Yisheng Shao,Naiyun Gao,Wenhai Chu,Juxiang Chen,Xian Lu,Yanping Zhu,Na An
UV/persulfate (UV/PS) has been as an efficient method to remove many organic contaminants in water. However, little is known about the impact of UV/PS pretrement on the formation of disinfection byproducts (DBPs) during chlorination of 2,4-Di-tert-butylphenol (2,4-D). This research evaluated that UV/PS preoxidation of 2,4-D greatly decreased the DBPs generation during following chlorination. In the 2,4-D solution without any treatment system (O system), trichloromethane (TCM) as the only detected DBP increased with the increase of chlorine dosage. While the formation of TCM declined with the increase of PS dosage in the PS and UV/PS preoxidation systems and decreased the estimated toxicity accordingly. And it was found the residual PS in system could combine free chlorine to further oxidize 2,4-D. And intermediate products were analysed by high-performance liquid chromatography combined with triple quadrupole mass spectroscopy analysis. In the presence of bromine, the bromodichloromethane augmented first and then slowly decreased while dibromochloromethane and tribromethane increased both in O and UV/PS systems with the increase of [Br − ]. Bromine substitution was decreased by preoxidation of UV/PS. UV/PS could decrease the total-DBPs formation when used in the real water matrix contained 100 μg/L 2,4-D.
研究领域:
环境科学
·
水处理工程
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DOI
PubMed
高影响因子
THERMOCHIMICA ACTA
·
2018
·
IF 2.189
Jun-Cheng Jiang,Li Li,Jia-Jia Jiang,Yan Wang,Siu-Ming Lo,Yong Pan,Xu-Hai Pan,Lei Ni
Tert-butyl peroxybenzoate (TBPB) is thermally unstable organic peroxide, which may cause disasters such as fire or explosion when excessive heat released due to thermal decomposition. Ionic liquid is often used as a catalyst and inhibitor in engineering applications recently. This study investigated the thermal decomposition characteristics of TBPB when added two different ionic liquids which are 1-Propyl-3-methylimidazolium iodide ([PMIM][I]) and 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM][BF4]) respectively with different mass ratio under DSC tests. Characteristic parameters such as the onset exothermic temperature (T 0 ) and heat of decomposition (ΔH d ) of samples were compared. Kinetic parameters such as activation energy E a were computed using two isoconversional methods which were Ozawa method and Friedman method respectively. The model based (zeroth order reaction) estimation method was used to estimate TMR ad at T 0 from non-isothermal DSC measurements to assess the thermal hazard of five samples. The paper aims to study the effect of ionic liquids (ILs) on the thermal decomposition of TBPB and analysis the influence of two ionic liquids on the decomposition mechanism of TBPB.
研究领域:
化学工程
·
安全科学
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DOI
高影响因子
Materials Chemistry Frontiers
·
2022
·Vol. 6
·期 16
·2274-2283
·
IF 8.683
Hanxiao Zhou,Tianhui Li,Wenjing Liu,Zhihao Guo,Yuxuan Guo,Jingjing Gao,Meizhen Qu,Huan Zhang,Gongchang Peng
Lithium metal is an ideal anode to replace graphite because of its high theoretical specific capacity. However, the surface of the lithium anode is prone to producing uncontrollable lithium dendrites, which seriously hinders its mass production. The morphology and chemical properties of the SEI layer have a key influence on the electrochemical precipitation of lithium ions on the electrode surface. Therefore, modifying the SEI layer is an important strategy to suppress lithium dendrites. This paper describes an effective additive, [tert-butyl(diphenyl)silyl] trifluoromethanesulfonate. The results reveal that the additive can be preferentially reduced on the surface of the lithium anode to form a flat and dense SEI layer, which further inhibits the consumption of the electrolyte and improves the electrochemical reversibility during the lithium plating/stripping process.
研究领域:
电化学
·
材料科学
·
能源存储
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DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2022
·
IF 4.326
Yanli Zhang,Zihao Su,Ke Xue,Jiafu Xing,Dingchao Fan,Jianguang Qi,Zhaoyou Zhu,Yinglong Wang
Ionic liquids (ILs) have been proposed as promising green solvents for the separation of azeotropes. In this work, the efficient separation of methyl tert-butyl ether (MTBE) from gasoline model oil using ILs was investigated from the molecular level (i.e., extraction mechanism) to process system integration (i.e., process simulation). The quantum chemistry (energy analysis and weak interaction) and molecular dynamics were implemented to explore the separation mechanism. Compared to benchmark organic solvents, 1-butyl-3-methylimidazolium nitrate ([BMIM][NO3]) and 1-ethanyl-3-methylimidazole hydrogen sulfate ([EMIM][HSO4]) had the highest extraction rate, and [NO3]− played a major role in the separation process. The extraction performance of MTBE from gasoline model oil using ILs was evaluated. [BMIM][NO3] had the highest extraction effect at 298.15 K. The efficient process of liquid–liquid extraction and extractive distillation with [BMIM][NO3] as an extractant were designed, which confirmed that ILs are promising extractants. This work provides a theoretical guideline to search and develop task-specific ILs for efficient recovery of MTBE.
研究领域:
化学工程
·
计算化学
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DOI
高影响因子
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
·
2023
·Vol. 148
·期 10
·4211-4221
·
IF 4.4
Dai Shuming,Song Ping,Jiao Ziyue,Cheng Yi,Shang Jingzhao,Leng Xuefei,Wei Zhiyong,Li Yang
A series of bisphenol A-based polyarylates was synthesized by using 2,2-bis (4-hydroxyphenyl) propane (BPA), terephthaloyl dichloride (TPC), and isophthaloyl dichloride (IPC) as raw materials and p-tert-butylphenol as a capping agent through interfacial polymerization to investigate the effect of end group structure on polymer properties. And the polymer films could be obtained by solvent casting method. The successful introduction of p-tert-butylphenol into the backbone adjusted molecular masses and achieved a regulable improvement of the polymer’s thermal properties. The thermal mass loss 5% temperature of the polymers raised above 470 °C, which indicated the thermal properties were broadly in line with that of the commercial product U-100. Besides, the addition of capping agent also improved the light transmission of the polymers and the transmittance reached above 83% at a wavelength of 450 nm. In addition, the thermal degradation mechanism of polyarylate and U-100 was investigated by simultaneous thermal analysis (STA)-IR and Py/GC–MS. It was discovered that PAR decomposed thermally at their end groups and ester groups first, followed by the breakage of their carbon–carbon bonds, which coincided with U-100’s thermal degradation mechanism. The thermal degradation mechanism of bisphenol A-based polyarylates was proposed. Graphical abstract
研究领域:
高分子科学
·
材料科学
·
热分析
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DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Xinying Ma,Meifeng Chen,Shouqing Xue,Huiping Lv,Qi Zhu,Fenghai Li
An electrochemical sensor for the determination of the antioxidant tert-butyl hydroquinone (TBHQ) in food was prepared by using a modified electrode based onazodicarbonamide(ADC) on a glassy carbon electrode (GCE)\. The electrochemical behavior of TBHQ on the modified electrode was studied by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The results showed that the peak redox current was significantly stronger than that on the bare GCE and that the detection sensitivity was improved. The experimental conditions, including the electrochemical polymerization pH value of the ADC solution, scanning rate, voltage, sweep segments and pH value of the TBHQ solution were optimized. Under optimal conditions, TBHQ presented a linear relationship with the oxidation peak current within the concentration range of 4.00×10 -7 ~4.00×10 -4 mol/L; the correlation coefficient was R=0.9988, and the limit of detection was 1.80×10 -9 mol/L. The modified electrode was applied for the determination of real food samples containing TBHQ, with recovery ranging between 96.5 and 103.0%. This electrochemical method showed good selectivity and high sensitivity.
研究领域:
分析化学
·
食品安全
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产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2023
·
IF 6
Jiali Gu,Yanxuan Ma,Zimu Li,Hongrui Liu,Qionghua Zhang
Tert-butylhydroquinone (TBHQ) is a synthetic antioxidant found widely in foods such as cooking oil, fried baked goods and meat products, however, if consumed in excessive quantities, it may cause nutritional problems and chronic diseases. The binding of TBHQ to transport protein before and after β-cyclodextrin (β-CD) encapsulation was investigated by multiple spectroscopies and molecular docking technology. At 298 K, the binding constant, enthalpy, and entropy of bovine serum albumin (BSA) with TBHQ were (1.18 ± 1.50) × 10 4 M −1 , (−110.11 ± 15.29) kJ mol −1 and (−293.36 ± 50.87) J mol −1 K −1 at 298 K, respectively. By forming a stable complex with BSA through van der Waals forces and hydrogen bonds, TBHQ altered BSA's secondary structure and microenvironmental polarity. However, the binding affinity of TBHQ with BSA decreased after encapsulation by β-CD, but the binding distance increased. Because of the encapsulation of β-CD, the interference of TBHQ with the BSA conformation was also inhibited. Fourier transform infrared spectroscopy, X-ray diffraction, and scanning electron microscope study confirmed the formation of an inclusion complex between CD and TBHQ. According to UV spectroscopy, TBHQ and β-CD have a binding constant of (1.21 ± 0.03) × 10 3 M −1 . The formation of TBHQ–β-CD inclusion complex inhibited the binding of TBHQ and BSA, possibly because the inclusion of β-CD prevented TBHQ from entering the hydrophobic cavity of BSA, which prevented TBHQ from binding to BSA, alleviating the negative effects of TBHQ on BSA conformation. The 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging results showed that the antioxidant activity of TBHQ was not affected by β-CD encapsulation.
研究领域:
食品科学
·
生物化学
·
光谱学
·
分子生物学
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产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2024
·
IF 12.2
Wenfang Fan,Luohua Guo,Yun Qu,Qianfen Zhuang,Yong Wang
Due to the potential environment and health risks of tert-butylhydroquinone (TBHQ), rapid, portable, selective and sensitive quantification of TBHQ in food and the environment are strictly essential. With this in mind, a selective, sensitive and rapid colorimetric TBHQ biosensor was developed using rationally designed copper-crosslinked carbon dot hydrogel nanozyme (BC-CDs@Cu). The BC-CDs@Cu had a high peroxidase-like activity toward the chromogenic reaction of hydrogen peroxide with dopamine via the generation of hydroxyl radicals and electron transfer process. The Michaelis-Menten constants of BC-CDs@Cu for dopamine and hydrogen peroxide were determined to be 0.86 and 0.91 mM. The added TBHQ markedly inhibited the BC-CDs@Cu-catalyzed dopamine oxidation by hydrogen peroxide, ascribing to the highly effective and rapid scavenging of hydroxyl radicals and the suppression of electron transfer. The inhibitory extent was applied for well quantifying TBHQ in the range of 0.5 − 20.0 μM with a detection limit of 70 nM. The proposed biosensor had a negligible response to various interfering substances. Moreover, a smartphone-assisted visual ratiometric biosensor was fabricated, and used to accomplish portable quantification of TBHQ in edible oils and water samples. This work reveals the enormous potential of hydrogel nanozyme, which will open a new situation for the detection of hazardous substances.
研究领域:
分析化学
·
食品安全
·
环境科学
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产品关联
DOI
PubMed
高影响因子
Molecular Medicine Reports
·
2017
·Vol. 16
·期 6
·8595-8604
·
IF 1.692
Guangshan Xie,Wen‑Xu Hong,Li Zhou,Xifei Yang,Haiyan Huang,Desheng Wu,Xinfeng Huang,Weiguo Zhu,Jianjun Liu
Methyl tert-butyl ether (MTBE) is widely used as an oxygenating agent in gasoline to reduce harmful emissions. However, previous studies have demonstrated that MTBE is a cytotoxic substance that has harmful effects in vivo and in vitro. Although remarkable progress has been made in elucidating the mechanisms underlying the MTBE‑induced reproductive toxicological effect in different cell lines, the precise mechanisms remain far from understood. The present study aimed to evaluate whether mammalian ovary cells were sensitive to MTBE exposure in vitro by assessing cell viability, lactate dehydrogenase (LDH) leakage, malondialdehyde (MDA) content and antioxidant enzyme activities. In addition, the effect of MTBE exposure on differential protein expression profiles was examined by two‑dimensional electrophoresis and matrix‑assisted laser desorption/ionization‑time of flight mass spectrometry. MTBE exposure induced significant effects on cell viability, LDH leakage, plasma membrane damage and the activity of antioxidant enzymes. In the proteomic analysis, 24 proteins were demonstrated to be significantly affected by MTBE exposure. Functional analysis indicated that these proteins were involved in catalytic activity, binding, structural molecule activity, metabolic processes, cellular processes and localization, highlighting the fact that the cytotoxic mechanisms resulting from MTBE exposure are complex and diverse. The altered expression levels of two representative proteins, heat shock protein family A (Hsp70) members 8 and 9, were further confirmed by western blot analysis. The results revealed that MTBE exposure affects protein expression in Chinese hamster ovary cells and that oxidative stress and altered protein levels constitute the mechanisms underlying MTBE‑induced cytotoxicity. These findings provided novel insights into the biochemical mechanisms involved in MTBE‑induced cytotoxicity in the reproductive system.
研究领域:
毒理学
·
生殖生物学
·
蛋白质组学
·
细胞生物化学
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DOI
PubMed
高影响因子
LANGMUIR
·
2026
·Vol. 42
·期 30
·21903-21911
·
IF 4.4
Zhao Xuanting,Zhang Ruihao,Li Xiaona,Liu Hongliang,Huang Guanwei
Methyl tert -butyl ether (MTBE), widely
used to
enhance gasoline octane ratings and combustion efficiency, is primarily
produced by the catalytic reaction of methanol (MeOH) with isobutylene,
where excess MeOH improves conversion efficiency but leads to challenges:
MeOH forms an azeotropic mixture with MTBE at 14.3 wt % concentration,
complicating separation due to similar molecular sizes and azeotropic
behavior, which renders membrane-based approaches ineffective. Herein,
we report a superwetting membrane-based strategy that combines low-polar
octadecyl trimethoxysilane-modified porous electrospun SiO 2 –TiO 2 membrane (STM-C 18 ) with high-polar
H 2 O as the inductive agent for high-flux and high-purity
separation of MTBE and MeOH. The relatively low-polar MTBE can rapidly
permeate the porous STM-C 18 and be selectively separated
by interacting with the nonpolar –C 18 , while the
relatively high-polar MeOH is being blocked due to the additive H 2 O dragging it by forming strong polar interactions. The SWM
system demonstrated exceptional performance, with a high flux of 322
L m –2 h –1 and MTBE purity exceeding
99.4 wt %, highlighting its significant potential for practical application
in MTBE production.
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DOI
PubMed
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2026
·
IF 1.7
Liu Xiaotong,Li Hui,Xu Chengjin,Peng Xiujing,Sun Guoxin,Cui Yu,Lu Ping
Efficient separation of nuclear-grade zirconium (Zr) and hafnium (Hf) remains a significant challenge in the nuclear industry. In this study, a novel extractant, di(p-tert-octylphenyl) phosphate (DTOPPA), was designed and synthesized. DTOPPA demonstrated preferential extraction of Hf over Zr in sulfuric acid media, surpassing the performance of conventional extractants such as D2EHPA and PC88A. Under optimized conditions, Hf(IV) extraction achieved 90.7% with a separation factor SF (Hf/Zr) of 13.4. Density functional theory (DFT) calculations and acid–base titration indicated enhanced dissociation of DTOPPA, attributed to the electron-withdrawing phenoxy group, which facilitates cation exchange. Slope analysis, saturation capacity measurements, and Fourier-transform infrared spectroscopy (FTIR) identified the extracted species as Zr(Hf)OA 2 ·2DTOPPA, involving cation exchange and P=O coordination. Selective stripping of Zr was accomplished using dilute sulfuric acid, while oxalic acid efficiently stripped Hf. A two-stage countercurrent extraction process yielded nuclear-grade Zr with stable organic phase recycling. This novel extractant provides an environmentally friendly and efficient method for Zr/Hf separation with significant potential for industrial application.
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DOI
高影响因子
TALANTA
·
2025
·
IF 6.1
Linzi Huang,Yuhui Qiu,Xiaoqian Sun,Kunxiang Deng,Xinyi Li,Yixi Xie,Pengcheng Zhao,Junjie Fei
Tert-butylhydroquinone (TBHQ) is a common antioxidant in food oils, and reliable detection methods are needed to ensure food safety. Here, a photoelectrochemical (PEC) sensor based on Bi 2 O 3 /MgIn 2 S 4 /GCE was developed for the detection of TBHQ. The sensor performance was significantly enhanced through electrostatic assembly of sheet-like Bi 2 O 3 onto flower-like MgIn 2 S 4 , forming a type-II heterojunction with carefully controlled component ratios, pH, and applied potential. The improved detection capability is attributed to the synergistic effect of the heterojunction structure. Furthermore, the selectivity of the sensor towards TBHQ was elucidated through the study of electrostatic interactions and redox potentials. The detection limit of the developed Bi 2 O 3 /MgIn 2 S 4 /GCE sensor was as low as 9 nM with two linear ranges (0.03–0.18 μM and 0.18–60 μM). Its effectiveness in monitoring food safety has been demonstrated by successful uses in blend oils and soybean oils.
研究领域:
分析化学
·
食品安全
·
材料科学
·
光电化学
·
传感器技术
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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）