ACS Applied Polymer Materials
·
2024
·
IF 4.4
Shuo Zhu,Ruiqi Cui,Sicong Liu,Weihao Chen,Shouhui Huang,Genbao Zhu,Meng Liu,Jutao Sun,Lili Li,Xinlong Pang
Based on the principle of intermolecular interactions of the aggregation-induced locally excited emission (AILE) luminescence mechanism, two-stage functional conjugated polymers (CPs) capable of scavenging ethanolamine (ETA) and nanoprobes with detecting formaldehyde (FA) were designed and developed. The two-stage functional PFOP-NEt3(+)-based nanomaterial is simple to synthesize, easy to use, versatile, atom-economical, photostability, and biocompatible. In the first stage, conjugated polymers can process and stabilize the water pollutant ethanolamine. In the second stage, the nanoparticles formed by self-assembling conjugated polymers with ethanolamine can produce specific and sensitive responses to formaldehyde. They can detect formaldehyde in normal and cancer cells. This two-stage functional material, which has a high atom economy, is expected to be a specific detection probe for formaldehyde in vivo and ex vivo and can remove ethanolamine from aqueous environments and cells.
研究领域:
生物化学
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环境科学
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材料科学
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高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2022
·
IF 4.889
Qinlan Luo,Qiang Sun,Qi Liu,Sen Liu,Min Xiao,Mengjie Chen,Yuanyuan Li,Hongxia Gao,Zhiwu Liang
The kinetics of CO 2 absorption in ethanolamine (MEA) + H 2 O + ethanol systems was investigated using stopped-flow apparatus. The first-order reaction rate constant ( k 0 ) values were tested with varying H 2 O and MEA concentrations. Transiting from the aqueous to non-aqueous solvents, the k 0 decreases and the reaction order for MEA shifts from 1.05 to 1.88. The zwitterion mechanism with the rate-limiting step of deprotonation was used to explore the role of water and its effect. Results showed that water could impact reactions through direct involvement and changing solvation environment. An improved kinetic model based on the zwitterion mechanism was obtained to indicate the quantitative influence of H 2 O concentration on the reaction kinetics of MEA + H 2 O + ethanol systems. The predicted values from the model well agreed to the experimental data with the average absolute relative difference of 6.73%. This study highlights the important effects of water on the reaction kinetics of CO 2 absorption into water-lean amine solutions.
研究领域:
化学工程
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环境科学
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Dan Gao,Youwei Qi,Jiaxi Yang,Heng Zhang
Microchannels have a wide range of applications in the chemical industry, therefore the use of microchannels for desorption of CO 2 -rich absorbent solvents is of great importance to achieve a wide range of applications for efficient and cost-effective CO 2 capture. To further investigate the characteristics of the desorption process, an experimental study of the desorption of ethanolamine/non-aqueous CO 2 -rich absorbent solvent was carried out using circular microchannels with 0.8 mm, 1.0 mm and 1.2 mm internal diameters and 70 mm lengths of quartz microchannels. Response surface methodology was used to reduce the number of experiments and optimize the operating conditions, while a high-speed camera was used to record the gas–liquid two-phase flow inside the microchannels during desorption. A 4-factor, 3-level response surface design was constructed, in which the four factors are solvent flow rate (0.1, 0.2, 0.3 mL/min), desorption temperature (60, 70, 80 °C), amine percentage in solvent (10, 20, 30 wt.%) and microchannel diameter (0.8, 1.0, 1.2 mm). The results show that the desorption temperature of the desorption process can be significantly reduced by using microchannels and MEA/non-aqueous absorbent, and the desorption of CO 2 -rich absorbent solvents can be achieved at temperature of 60 °C. During the desorption process of the microchannels, six flow states were demonstrated: bubble flow, bubble-Taylor flow, merging and growth of the Taylor flow, Taylor flow, annular flow, and breakage of the annular flow. The CO 2 desorption ratio was generally high when the flow pattern was Taylor flow, with the highest ratio reaching 93.84%. The bubble average velocity and dimensionless variation length increase due to mass transfer between the liquid and gas phases, both of which reach a maximum at a solvent flow rate of 0.2 mL/min.
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高影响因子
OPTICAL MATERIALS
·
2023
·
IF 3.9
Ruojin Zheng,Xiaoyan Gan,Kegui Li,Shenhao Zhang,Maling Xiang,Liling Guo,Hanxing Liu
In recent years, the extensive exploration of two-dimensional (2D) perovskites in the perovskite solar cell field has been driven by their remarkable humidity stability and tunable optoelectrical properties. However, the device performance in solar cells is hampered by the constraints posed by the quantum and dielectric confinement effects. In this study, ethanolamine (EA + ) with a high dielectric constant was introduced as a spacer cation to fabricate 2D perovskite (EA) 2 (MA) 4 Pb 5 I 16 films. The investigation focused on evaluating the influence of various additives on the crystallinity , surface morphology , light absorption capacity, and carrier lifetime of EA + -based perovskite thin films . By incorporating MACl as an additive, we achieved smooth and compact perovskite thin films of superior quality, leading to perovskite solar cells (PSCs) with a remarkable photovoltaic efficiency of 10.24%. Furthermore, the unencapsulated (EA) 2 (MA) 4 Pb 5 I 16 -based device maintained 83% of its original efficiency after 840 h of storage in ambient conditions, outperforming the 2D perovskite counterpart that employed phenethylamine (PEA + ) as the spacer cation with a dielectric constant of 3.314. These results convincingly demonstrate that the strategic incorporation of high dielectric constant organic cations into 2D PSCs offers a promising avenue for elevating their efficiency and humidity stability.
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高影响因子
ENERGY & FUELS
·
2024
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IF 5.2
Xiaowen Yu,Hao Wu,Wenrui Li,Qi Zhang,Hongmin Yang
Aerosols from the chemical absorption systems, which use organic amine solutions as absorbents to capture CO2 in the flue gas, may pollute the atmosphere and damage the ecosystem. Based on the chemical absorption platform, this study focuses on investigating the formation mechanism and emission characteristics of aerosols in chemical absorption systems. The aerosols generated under standard operating conditions were analyzed using scanning electron microscopy (SEM) and energy dispersive spectrometry (EDS). Additionally, controlled experiments were conducted to demonstrate the impact of heterogeneous reactions on aerosol generation. In addition, the effects of practical operating parameters on aerosol emissions were explored and evaluated. The results showed that the emission of aerosols in the flue gas increased significantly after the chemical absorption platform. Most of the aerosols generated in the chemical absorption platform are submicron particles of below 1 μm, with a few micron-sized particles. Aerosol generation is significantly influenced by the presence of CO2, which is mainly attributed to heterogeneous reactions. Increasing the liquid-to-gas ratio and the absorbent concentration enhances the heterogeneous reaction, which leads to an increase in aerosol emissions. Lower flue gas temperatures and CO2 loading inhibit the occurrence of heterogeneous reactions, thus reducing aerosol emissions. According to the results of the maximum emission reduction rate, it was found that the absorbent concentration had the greatest degree of influence on aerosol emissions, the maximum emission reduction rate could reach close to 50%, and the CO2 loading had the most minor influence on aerosol emissions, which was only 13%.
研究领域:
环境科学
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化学工程
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DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
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2024
·Vol. 48
·期 22
·10133-10141
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IF 2.7
Rong Tu,Jiangwei Liu,Yingqiu Zheng,Chao Song,Chitengfei Zhang,Yuzhe Han,Rongchen Xu,Guoqiang Luo,Song Zhang,Takashi Goto
NiO-based materials hold great promise as oxygen evolution reaction (OER) catalysts owing to their high intrinsic OER activity and good chemical stability. Herein, Ni/NiO/C hollow microspheres with high activity were successfully fabricated through a facile one-step mist chemical vapor deposition (mist-CVD) process using ethanolamine and nickel chloride as precursors. The high-temperature pyrolysis of the organic precursor yields a significant quantity of gas, leading to a rapid increase in pressure within the droplet, which prompts the nanoparticles to aggregate on the surface of the droplet and form a hollow structure. The crystal phase and morphology of the samples can be modulated through optimizing the decomposition temperature, and particularly, Ni/NiO/C porous hollow microspheres synthesized at 600 °C (Ni-600) presented the best OER activity, exhibiting an overpotential at 10 mA cm−2 (η10) of 286.4 mV and a Tafel slope of 54.8 mV dec−1. The outstanding OER electrocatalytic performance of Ni/NiO/C hollow microspheres is ascribed to the improved electronic conductivity facilitated by the existence of metallic Ni and amorphous C, coupled with the relatively large specific surface area derived from the unique hollow structure.
研究领域:
材料科学
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电化学
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DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2026
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IF 8.7
Runlin Gui,Yang Li,Liyao Zhang,Junchang Jin,Yuqi Shi,Junxuan Wang,Jingyu Guo,Lu Qian,Yuyan Xiong
Obesity is closely linked to the development of non-alcoholic fatty liver disease (NAFLD), yet its mechanisms are not fully understood. Ethanolamine phosphate phospholyase (ETNPPL), an enzyme highly expressed in the liver, catalyzes the conversion of phosphoethanolamine to ammonia, inorganic phosphate, and acetaldehyde. This study shows that ETNPPL plays a crucial role in obesity-associated NAFLD by regulating lipid accumulation, liver dysfunction, and lipid homeostasis. ETNPPL expression was increased in high-fat diet (HFD)-induced NAFLD mice, while its deficiency alleviated NAFLD. ETNPPL overexpression and free fatty acids (FFAs) exposure promoted ferroptosis in hepatocytes. The FFAs-ETNPPL signaling axis induces lipid accumulation and dysfunction through ferroptosis via the GPX4/mtROS pathway and the inhibition of ALDH2. Moreover, FFAs-induced hepatocyte ferroptosis reprogrammed macrophages, exacerbating liver dysfunction. In vivo, ETNPPL knockout reduced hepatic ferroptosis and macrophage reprogramming in mice. These findings highlight ETNPPL as a potential therapeutic target for obesity-related NAFLD.
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DOI
PubMed
高影响因子
Nanomaterials
·
2020
·Vol. 10
·期 5
·962
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IF 4.324
Xianwei Meng,Kailin Chi,Qian Li,Yu Cao,Gengxin Song,Bao Liu,Haibin Yang,Wuyou Fu
As one of the most frequently-used electron-transporting materials, the mesoporous titanium dioxide (m-TiO2) film used in mesoporous structured perovskite solar cells (PSCs) can be employed for the scaffold of the perovskite film and as a pathway for electron transport, and the contact area between the perovskite and m-TiO2directly determines the comprehensive performance of the PSCs. Because of the substandard interface combining quality between the all-inorganic perovskite CsPbIBr2and m-TiO2, the development of the mesoporous structured CsPbIBr2PSCs synthesized by the one-step method is severely limited. Here, we used a solution containing PbI2, monoethanolamine (EA) and dimethyl sulfoxide (DMSO) (PED) as the interfacial modifier to enhance the contact area and modify the m-TiO2/CsPbIBr2contact characteristics. Comparatively, the performance of the solar device based on the PED-modified m-TiO2layer has improved considerably, and its power conversion efficiency is up to 6.39%.Keywords:all-inorganic perovskite;CsPbIBr2;solar cell;mesoporous structure;interfacial modification
研究领域:
材料科学
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能源科学
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化学工程
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DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2021
·
IF 7.312
Dongshun Deng,Xiaoxia Deng,Ke Li,Hao Fang
Development of high-efficient absorbents for ammonia (NH 3 ) to improve the quality of atmosphere and ecological environment has gained interest among scholars. Ionic liquids (ILs) with unique properties have been reported as potential solvents for NH 3 uptake to avoid many problems troubling the traditional NH 3 capture technology. In this study, six protic ethanolamine-based ILs (PILs) were synthesized for efficient and reversible NH 3 uptake, with the initial idea of constructing multiple binding sites to enhance the absorption ability for NH 3 . The physical properties and NH 3 absorption performance in these PILs were investigated and analysized on the basis of molecular structures. The results demonstrated that the preferred [EtAN][SCN] had suitable viscosity of 78.18 mPa.s and molality capacity up to 0.296 and 0.0802 g NH 3 /g PILs at 100.0 and 4.5 kPa NH 3 pressure, respectively. Such absorption ability was higher than all the reported absorbents related with ILs. 1 H NMR spectroscopy illustrated that the outstanding absorption ability was originated from multiple hydrogen-bonding interactions between acidic proton, hydroxyl group and thiocyanate with NH 3 . The absorption enthalpy of −35.5 kJ/mol was further calculated according to the absorption capacity at low NH 3 pressure under corresponding temperatures. In short, present PILs exhibited attractive absorption ability, excellent recyclability, low absorption enthalpy, and competitive selectivity of NH 3 /CO 2 . Present work can provide instructive idea for designing PILs in NH 3 recovery and separation application.
研究领域:
环境科学
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化学工程
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高影响因子
JOURNAL OF MOLECULAR LIQUIDS
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2018
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IF 4.513
Wenbao Liu,Wengang Liu,Shujuan Dai,Ting Yang,Zhen Li,Ping Fang
Magnesite ore powder is the primary raw material used to prepare refractory magnesia. With the depletion of high-grade magnesite, methods to reduce the impurities and improve the quality of magnesite ore powder are urgently required. In this study, an ethanolamine-based surfactant, bis (2-hydroxyethyl) dodecylamine (BHDA), was first introduced into the flotation of magnesite ore as a novel collector, and the possibility of improving the purity of the ore was investigated by experiment and theory. Flotation tests, X-ray photoelectron spectroscopy, Fourier-transform-IR spectroscopy, and zeta potential measurements were carried out to study the behaviors and mechanisms by which the collector enhances the purity of magnesite ore powder. The flotation results revealed the noticeable difference in the floatability of quartz, magnesite, and dolomite when combined with the collector over a wide range of pulp pH values (4.18–9.17). The analytical results obtained from FTIR spectra, XPS, and zeta potential measurements indicate that BHDA was readily adsorbed on the surface of quartz, mainly by electrostatic and hydrogen bonding interactions, whereas it was adsorbed on the surfaces of magnesite and dolomite by weak electrostatic interactions. By introducing a hydroxyethyl group to the tertiary amine collector, more hydrogen bonds can form with the surface of quartz, strengthening the adsorption stability. Thus, compared to the traditional collector, dodecylamine, BHDA showed better desilication and purification performance for magnesite ore powder. Meanwhile, our results show that the simpler reagent system and process flow makes BHDA promising for the industrial purification of magnesite ore powder.
研究领域:
矿物加工工程
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材料科学与工程
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化学工程与技术
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DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
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2023
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IF 5.9
Yongchang Xiao,Jun Qi,Zihao Yu,Wang Zhao,Weiyong Shao,Nanhua Li,Yuling Kong,Lizi Li,Weiqi Wei
A ternary deep-eutectic solvents (DESs) which consisted of choline chloride-urea-ethanolamine (ChCl-U-EOA) was used for the pretreatment of corncob powder (CCP), and the effect of various pretreatment conditions on the pretreated substrates components and subsequent enzymatic digestion was investigated. The results indicated that under the optimum pretreatment conditions (110 ℃, 60 min, 10% solid concentration), the ChCl-U-EOA pretreatment could selectively remove ∼71.8% of lignin while retaining ∼87.7% of cellulose and ∼74.6% of hemicellulose , and the yields of glucose and xylose after enzymatic digestion reached ∼86.4% and ∼70.5%, respectively. The characterization of various pretreated substrates showed that the removal of lignin, and the fragmentation of pretreated substrates was the key factors to improve glucose/xylose yields. In addition, the lignin in the pretreated hydrolysate was collected by acid precipitation and fractionated by ethanol, and then lignin nanospheres (LNPs) with a particle size under 200 nm were fabricated via a solvent-antisolvent method.
研究领域:
化学工程
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生物化学
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材料科学
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产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2024
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IF 7.4
Bingke Tian,Chaofeng Huang,Yingshuang Zhang,Cong li,Hongru Jiang,Chongqing Wang,Hui Wang,Shangbo Zhang,Liuchuang Zhao
Plastics are extensively used in packaging, automobiles, sanitation, agriculture, and architecture due to their lightweight, malleability, corrosion resistance, and low cost. However, their short lifespan leads to the rapid accumulation of plastic waste. Therefore, recycling waste plastics is crucial to conserve resources and protect the environment from "white pollution." This study developed a flotation process to facilitate the recycling of common polyesters by separating polyamide (PA), polycarbonate (PC), polyethylene terephthalate (PET), polymethyl methacrylate (PMMA), and polyurethane (PU). The flotation process was based on a hydrophilic gradient induced by modification with methanol, ethanol, and ethanolamine. The floatability sequence of the polyesters was PA < PU < PET < PC < < PMMA in the methanol-based system, PA < PU < PET < < PC ≈ PMMA in the ethanol-based system, and PET < PU < PA < < PC < PMMA in the ethanolamine-based system. The floatability of the polyesters was closely related to the reactivity of ester exchange. Based on the hydrophilic gradients, a cascaded flotation process was designed, following the ester exchange mechanism, to sequentially recover PET, PA, PC, and PMMA. PA, PET, and PU were the sinking plastics after modification with methanol, ethanol, and ethanolamine, respectively, while only PC remained hydrophilic after methanol modification. The purity of PA, PC, PET, and PMMA was 95.10 %, 93.68 %, 89.39 %, and 86.42 %, respectively, with recovery rates of 82.96 %, 83.90 %, 96.08 %, and 100 %. This study presents a promising approach for the flotation separation of waste polyesters.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
危险品化学品经营许可证（带存储）