CHEMICAL ENGINEERING SCIENCE
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2017
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IF 2.895
Liang Shen,Yan Wang
Interfacially synthesized polyamide (PA) thin-film composite (TFC) membranes are widely employed in forward osmosis (FO) applications because of the easy fabrication and excellent separation performance. But they generally suffer from the relative low water permeability and high fouling tendency due to the inherent hydrophobic nature of the PA layer. In this study, an efficient surface modification of nascent TFC membranes is performed by grafting a self-catalyzed tripodal amine—tris(2-aminoethyl)amine (TAEA), in order to improve the membrane performance. This tertiary amine plays a dual role of the reactive amine monomer reacting with acyl chloride groups and the catalyst accelerating the amidation reaction between 1,3,5-trimesoyl chloride (TMC) and TAEA, therefore contributing to an efficient grafting effect to the greatest extent. State-of-the-art characterizations are applied to verify the modification mechanism. The effects of the pH and concentration of the TAEA solution on the overall properties of the resultant TFC membranes are systematically investigated, including the surface chemical composition, surface morphology, hydrophilicity, surface charge, separation performance, and fouling resistance. Compared with the control TFC membrane, TAEA-modified TFC membranes exhibit significantly improved water fluxes, higher antifouling propensity, and comparable reverse salt fluxes.
研究领域:
材料科学
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环境工程
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产品关联
DOI
高影响因子
INORGANICA CHIMICA ACTA
·
2021
·
IF 2.545
Xingliang Li,Juncai Lu,Wanjun Mu,Baihua Chen,Daibing Luo,Bijun Liu,Yanqiu Yang,Hongyuan Wei,Shuming Peng
Nitrilotri–3–propanoic Acid (NTPA) and Tris(2–carboxyethyl) phosphine (TCEP) possess similar skeleton. This pair of isostructural ligands is a perfect set to assess the differences of uranyl (UO 2 2+ ) complexes with N–tricarboxylate versus P–tricarboxylate. The protonation reactions of NTPA and TCEP were investigated by potentiometry and calorimetry. Complexation of uranyl with the both ligands was studied by potentiometry and structural analysis. The results indicate that central trialkylamine in NTPA has a higher affinity for the proton than trialkylphosphine in TCEP. Crystal structures and NMR analyses indicate that central amine of NTPA and central phosphine of TCEP are not involved in the bonding. NTPA/UO 2 2+ complex is more stable than TCEP/UO 2 2+ complex. This difference cannot be explained by electronic effect of central N and P atoms because of nonbonding interactions. The higher stability of UO 2 2+ /NTPA versus UO 2 2+ /TCEP may be due to the fact that the central N atom of NTPA has a lower steric hindrance than the central P atom of TCEP. Another possible reason is that UO 2 2+ /TCEP complexes have different coordination modes from UO 2 2+ /NTPA complexes.
研究领域:
化学
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配位化学
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核化学
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DOI
高影响因子
ENVIRONMENTAL POLLUTION
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2020
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IF 6.793
Dan Li,Yin Zhong,Xifen Zhu,Heli Wang,Weiqiang Yang,Yirong Deng,Weilin Huang,Ping’an Peng
Tris(2-chloroethyl) phosphate (TCEP) is a widely found emerging pollutant due to its heavy usage as a flame retardant . It is chemically stable and is very difficult to removal from water. The goal of this study was to explore whether iron monosulfide (FeS) can be used for reductive transformation of TCEP as FeS can react with a variety of halogenated organic contaminants . We used batch reactor systems to quantify the transformation reactions in the absence and presence of cetyltrimethylammonium bromide (CTAB, a common surfactant in aquatic environments). The results showed that, in the presence of CTAB (100 mg L −1 ), FeS exhibited much greater reactivity towards TCEP as 93% of initial TCEP had been transformed within 14 d of reaction. In the absence of CTAB, it required 710 d of reaction to achieve 97.3% reduction of initial TCEP. The enhancement of CTAB on TCEP transformation rate could be due to the facts that CTAB could stabilize FeS suspension against aggregation, protect FeS from rapid oxidation, and increase surface adsorption of TCEP on FeS. XPS analysis showed that both Fe(II) and S(-II) species on the FeS surface were involved in the reductive transformation of TCEP. Analysis of transformation products revealed that TCEP was reductively transformed into bis(2-chloroethyl) phosphate (BCEP), Cl − and C 2 H 4 . These findings showed that FeS may play an important role in the reductive transformation of TCEP when TCEP coexisting with CTAB in aquatic environments.
研究领域:
环境科学
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化学
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产品关联
DOI
PubMed
高影响因子
ANALYTICAL CHEMISTRY
·
2019
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IF 6.35
Muhammad Saqib,Shahida Bashir,Haijuan Li,ShanShan Wang,Yongdong Jin
Development of simple and effective chemiluminescence (CL) systems for multiple sensing applications is significantly important but still a challenge. Until now, the majority of CL systems primarily utilized hydrogen peroxide (H2O2) as coreactant, which is limited in its stability and selectivity due to the easy decomposition of H2O2 in the presence of several ions. In this study, we develop a new and intense CL system by combined use of tris(2-carboxyethyl)phosphine (TCEP), a highly solution stable and pH-tolerant tertiary phosphine, with lucigenin for the first time. The effective pairing leads to a significant ∼23 times CL enhancement over classic the lucigenin–H2O2 system without employing additional catalysts. By virtue of this fascinating platform, a sensitive CL method has been developed for the multiple detection of TCEP (LOD = 70 nM), lucigenin (LOD = 4.0 nM), superoxide dismutase (LOD = 0.8 ng/mL), Hg2+(LOD = 0.3 nM), and dopamine (LOD = 3.0 nM), with a linear range of 0.1–320 μM, 0.01–55 μM, 0.005–0.5 μg/mL, 1.0–600 nM, and 0.01–0.8 μM, respectively. Remarkably, this CL method exhibited superior selectivity over several potential interferents. Moreover, the proposed method achieved excellent recoveries in the range of 94.0–102.3% for both Hg2+ detection in lake water and dopamine detection in human serum real samples. We envision that broad applications of TCEP may lead to construct new CL systems, pushing forward for efficient detection of various analytes.
研究领域:
分析化学
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生物化学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
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2019
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IF 2.12
Qiang Liu,Peijun Cai,Xiangyu Wan,Shuai Zhang,Kai Du,Qiang Yin
Two neodymium β -diketonates metal-organic complexes, Nd(TTA) 3 TPTZ ( 1 ) and Nd(BFA) 3 TPTZ ( 2 ), have been synthesized by using two β -diketone ligands 4,4,4-trifluoro-1-(2-thienyl)-1,3-butanedione (HTTA) and 4,4,4-trifluoro-1-phenyl-1,3-butanedione (HFBA), and a macrocyclic conjugate ligand, 2,4,6-tri(2-pyridyl)-1,3,5-triazine (TPTZ). The crystal structures of these two complexes were determined by single crystal X-ray diffraction. The X-ray diffraction analysis showed that each neodymium ion in the two complexes formed a Nine-Coordinated structure with six oxygen atoms of HTTA (or HBFA) ligands and three nitrogen atoms of TPTZ ligand by the characteristic of triclinic with P 1 ( — ) space group both. In the crystal structure of the two complexes, a very obvious aromatic donor-acceptor interaction can be observed between adjacent TPTZ ligand molecules, which play an important role in the formation of three-dimensional structures. The complexes were also characterized by infrared spectroscopy , elemental analysis, thermogravimetric and fluorescence spectra . Fluorescence analysis showed that the two complexes exhibited characteristic neodymium-centered emission due to the significant antenna effect of these ligands.
研究领域:
化学
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材料科学
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产品关联
DOI
高影响因子
WATER AIR AND SOIL POLLUTION
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2021
·Vol. 232
·期 9
·1-13
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IF 2.52
Li Qiuyue,Huang Kaibo,Duan Xingchun,Liang Jiahao,Chen Xinran,Tao Xueqin,Lu Guining
In this research, the feasibility of UV/Fe(III) photocatalytic technology for the degradation of tris (2-chloroethyl) phosphate (TCEP) was investigated. Experimental results showed that TCEP had a significant removal efficiency in UV/Fe(III) ([TCEP] 0 = 10 ppm, [Fe 2 (SO 4 ) 3 ] 0 = 0.5 mM, near-100% degradation rate after 90 min). A free radical scavenging experiment and EPR detection indicated that the formation of ·OH by the Fe(III) under ultraviolet light played a major role. Experiments on influencing factors revealed that oxygen accelerated the degradation of TCEP by accelerating the Fe(II)/Fe(III) cycle, but Cl − and PO 4 3− inhibited TCEP degradation. Three intermediate products were generated, including C 4 H 9 Cl 2 O 4 P (product A, m/z 222.9690), C 6 H 13 Cl 2 O 5 P (product B, m/z 266.9954), and C 2 H 6 ClO 4 P (product C, m/z 160.9762). Moreover, the degradation pathways primarily involved the C–Cl bond and phosphoric center being attacked. Escherichia coli toxicity test revealed that UV/Fe(III) treatment reduced environmental risk of TCEP. Therefore, UV/Fe(III) photocatalysis is a promising technique for TCEP control in wastewater treatment. Graphical abstract
研究领域:
环境科学
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化学工程
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毒理学
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产品关联
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
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2023
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IF 9.8
Yan Yang,Mingyuan Li,Hairui Yu,Yi Tong,Qiqing Chen
Fibrous microplastics are abundant in water, and the additives on fibers could also be transported jointly, which is a combined pollution scenario prevalent in the environment. Organisms ingest microplastics directly from the environment or indirectly through trophic transfer. However, there is a dearth of available information on the uptake and effects of fibers and their additives. This study investigated the uptake and depuration of polyester microplastic fibers (MFs, 3600 items/L) by adult female zebrafish via waterborne and foodborne exposure routes and the effects on the fish behavior. Moreover, we used brominated flame-retardant tris(2,3-dibromopropyl) isocyanurate (TBC, 5 μg/L) as a representative plastic additive compound and explored MFs' effects on the accumulation of TBC in zebrafish. Results substantiated that the highest MF concentrations in zebrafish from waterborne exposure (12.00 ± 4.59 items/tissue) were approximately three times higher than foodborne exposure, suggesting waterborne exposure as the primary ingestion route. In addition, environmentally relevant MF concentrations did not affect TBC bioaccumulation via aqueous exposure. However, MFs could decrease TBC accumulation via foodborne exposure by ingesting contaminated D. magna , which was probably because MF co-exposure decreased the TBC burden in daphnids. MF exposure also considerably increased behavioral hyperactivity in zebrafish. Moved speed, travelled distance, and active swimming duration all increased when exposed to MFs-containing groups. This phenomenon remained apparent in the foodborne exposure experiment with a low MF concentration (0.67–6.33 items/tissue) in zebrafish. This study offers a deeper understanding of MF uptake and excretion in zebrafish and the accumulation of the co-existing pollutant. We also confirmed that waterborne and foodborne exposure may lead to abnormal fish behavior even at low in vivo MF burdens.
研究领域:
环境科学
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生态毒理学
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水生生物学
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产品关联
DOI
PubMed
高影响因子
ANALYTICAL CHEMISTRY
·
2025
·
IF 6.7
Ala’a Mhmoued Abdllh Alboull,Hao Jiang,Tasneem Omda Edrees Isaa,Zhiyong Dong,Tadele Eticha,Guobao Xu
Sugar alcohols are low-calorie sugar substitutes commonly used in sugar-free products. In this study, we report for the first time Ru(bpy)32+ electrochemiluminescence (ECL) of sugar alcohols. Ru(bpy)32+ ECL of sugar alcohols, including sorbitol, mannitol, isbitol (also called isomalt, isomaltitol, and palatinitol), maltitol, lactitol, xylitol, and erythritol, was investigated. The applicability of the Ru(bpy)32+ ECL system for sugar alcohol detection was demonstrated by using sorbitol as a representative analyte. The optimized system exhibited excellent analytical performance, with a wide linear detection range from 0.5 μM to 5 mM and a low detection limit of 0.026 μM (S/N = 3). In practical applications, the system demonstrated outstanding accuracy in detecting sorbitol in pharmaceutical samples, with recovery rates ranging from 97.75 to 104.00%. These findings establish the Ru(bpy)32+ ECL as an effective and sensitive method for the detection of sugar alcohols.
研究领域:
分析化学
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电化学
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食品科学
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药物分析
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产品关联
DOI
PubMed
高影响因子
DRUG AND CHEMICAL TOXICOLOGY
·
2025
·
IF 1.9
Yongxiao Huang,Caina Jiang,Fangyao Li,Xianli Ma
As a commonly used flame retardant in numerous products, it is inevitable that tris(2-chloroethyl)phosphate (TCEP) is released into the surrounding environment during its use. This process gives rise to potential environmental concerns that must be addressed. In recent years, there has been significant interest in the role of TCEP in the development of hyperuricemia (HUA). However, the specific mechanisms by which TCEP contributes to this condition remain to be fully elucidated. In this study, we have employed a combination of network toxicology and in vitro experiments to investigate the potential effects of TCEP on HUA and its mechanism of action. Through systematic analysis of GeneCards, OMIM, Swiss Target Prediction, and CHEMBL databases, a total of 242 TCEP-induced HUA targets were identified. Utilizing the STRING and DAVID databases further elucidated the core targets and associated signaling pathways of TCEP in relation to HUA. The molecular docking assay results demonstrated that TCEP exhibits binding activity with the selected targets. In vitro, our findings revealed that TCEP exacerbates HUA by amplifying the inflammatory response and upregulating the mRNA expression levels of GLUT9 and URAT1. The present study provides a new perspective and theoretical basis for the in-depth understanding of the molecular mechanism of TCEP affecting HUA, and helps to further understand the pathogenesis of HUA and the role of environmental factors.
研究领域:
环境毒理学
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分子生物学
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药理学
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生物信息学
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产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2024
·
IF 2.7
Caixia Huang,Lucheng Li,Peng Yang,Jun Chen
Although many researchers continue to pursue improved battery capacity, battery safety remains a major concern. The main cause of battery fires is the flammability of the currently available commercial organic liquid electrolytes, which are mainly composed of 1 M lithium hexafluorophosphate (LiPF6) and EC-containing carbonate solvents. Herein, a flame-retardant co-solvent tris(2,2,2-trifluoroethyl) phosphite (TTFP) was applied to improve the flame retardancy of a battery. It could improve the battery's discharging capacities at both 4.2 V and high cut-off voltage (4.5 V). Specifically, at a common voltage of 4.2 V, the cells’ 100th discharge capacity without TTFP was 130 mA h g−1 by 0.2C with a capacity retention (CR) of 69%. In comparison, under the same conditions, the capacity of the 10% TTFP-containing cell was 162.3 mA h g−1 with a CR of 73.9%. This increase in the electrochemical properties of the cell is clearly due to the addition of TTFP. When charging and discharging at 2.75–4.5 V, the capacity of the battery with STD after 100 cycles at 0.2C was 118.7 mA h g−1, and the corresponding CR was 60.93%. Meanwhile, the discharged capacity of the battery containing 10% TTFP was 150.0 mA h g−1 with a corresponding CR of 65.39%. Through combustion test with and without the TTFP electrolyte, it can be concluded that the TTFP-containing electrolyte is difficult to ignite. This result indicates that TTFP can efficiently enhance the safety performance of the battery. Thus, the incorporation of TTFP can be beneficial to improve the flame retardancy of the electrolyte. Moreover, TTFP does not affect the electrochemical stability of batteries. Thus, the present work may provide a good direction for the next generation of high-performance and high-safety lithium-ion batteries.
研究领域:
材料科学
·
能源科学
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产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2025
·
IF 11.3
Yongkang Zhang,Haiyu Qin,Bowen Zu,Zichen Yu,Chunsheng Liu,Jianbo Shi,Bingsheng Zhou
Abnormal development and mortality in early life stages pose significant threats to the growth and continuation of fish populations. Tris(2,4-di-tert-butylphenyl) phosphate (TDtBPP) is a novel organophosphate ester contaminant detected in natural waters. However, the potential effects of maternal exposure to TDtBPP on the early development of offspring embryos in fish remain unknown. Here, 30-day-old zebrafish were exposed to TDtBPP at 0, 50, 500, or 5000 ng/L for 180 days, and the exposed females were spawned with unexposed males. TDtBPP accumulation was detected in offspring embryos, accompanied by an increased malformation rate and mortality. The developmental abnormality of offspring embryos was identified to originate from the gastrula stage. Furthermore, based on transcriptome analysis, the down-regulation of RHO family interacting cell polarization regulator 2 gene (ripor2) was considered as a key toxic event, and this was confirmed in the subsequent knockdown experiment. Moreover, molecular docking studies and forkhead box O1 (foxO1) transcription factor inhibitor (AS1842856) exposure experiments demonstrated that the blockade of foxO1 transcriptional regulation was responsible for the decreased expression of ripor2. The results of this study demonstrated that the occurrence of developmental malformation and mortality in zebrafish offspring embryos following maternal TDtBPP exposure were triggered by the blockade of foxO1 transcriptional regulation and the consequent down-regulation of ripor2.
研究领域:
环境科学
·
毒理学
·
分子生物学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2021
·
IF 10.588
Hang Liu,Hua Yin,Xiaolong Yu,Minghan Zhu,Zhi Dang
In this work, the amino-functionalized metal-organic frameworks (MIL-88B-NH 2 ) was synthesized, characterized and used as heterogeneous photo-Fenton catalyst for tris-(2-chloroisopropyl) phosphate (TCPP) degradation. The photo-Fenton activity of MIL-88B-NH 2 was investigated on the basis of influence factors, such as initial pH and TCPP concentration, and coexisting impurities. The results revealed that MIL-88B-NH 2 +H 2 O 2 +Vis system exhibited a satisfactory degradation efficiency of TCPP (almost 100%) within 60 min accompanied by a good reusability. Noticeably, the degradation kinetics constant of TCPP by MIL-88B-NH 2 +H 2 O 2 +Vis system was 0.086 min −1 , which was visibly higher than that of MIL-88B+H 2 O 2 +Vis system (0.021 min −1 ) since the addition of amino-functionalized organic linker inhibiting the recombination rate of the photo-generated electron-hole pairs and improving the visible light response. Combined with the characterization, the conversion of Fe III to Fe II could be accelerated by the photo-generated electron from the excitation of Fe-O clusters and NH 2 functionalities, which strengthened the decomposition of H 2 O 2 and formed plenty •OH. Simultaneously, six steady products were validated and potential degradation pathways of TCPP were proposed. It was anticipated that MIL-88B-NH 2 could be considered as a desirable and alternative candidate in the application of heterogeneous photo-Fenton reaction to control the environmental risks caused by organophosphate flame retardants (OPFRs).
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）