JOURNAL OF FOOD COMPOSITION AND ANALYSIS
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2023
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IF 4.3
Xianheng Li,Huan Li,Keqiang Lai,Jie Zhao,Junjian Miao
In this study, an efficient, low-cost and environmentally friendly deep eutectic solvent (DES) was prepared using methanol and betaine , which was then employed as an extractant to detect BPA and BPF in several edible oils by high performance liquid chromatography-fluorescence detection (HPLC-FLD) with good results. The electrostatic potentials of methanol, betaine, water and BPs were analyzed by quantum chemical computational techniques to explain the mechanism of DES extraction. Several important parameters affecting the extraction efficiency, composition , volume and extraction time of DES were optimized. The optimum conditions for the use of DES were the molar ratio of 1:30 (betaine: methanol), the volume of DES of 200 μL and the extraction time of 1.5 min. The results of the method evaluation showed a wide linear range (0.01–0.8 μg g −1 ) and a high linear correlation coefficient (R 2 ≥0.994). The limit of detection (LOD) and limit of quantification (LOQ) values ranged from 1.65 to 2.92 ng g −1 and 5.45–9.64 ng g −1 , respectively. The greenness of the assay was evaluated by applying the green analytical procedure index method, and the results showed that the experimental method has the advantages of simple sample pre-treatment and low amount of waste generated during the assay. The experimental method has potential applications in the field of the detection of bisphenol compounds in edible oils.
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CHEMICAL ENGINEERING JOURNAL
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2023
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IF 15.1
Guanhua Liu,Luting Wang,Anan Zhao,Leijie Guo,Liya Zhou,Ying He,Li Ma,Yunting Liu,Jing Gao,Yanjun Jiang
he removal of micropollutants has drawn increasing attention due to the serious hazard even at low concentration. The construction of separation membranes with high micropollutant removal is highly desired. In this study, laccase cross-linked enzyme aggregates (CLEAs) were obtained with bovine serum albumin as a protective agent, followed by the preparation of biocatalytic membrane using glutaraldehyde as a crosslinking agent and preloaded polydopamine-modified UiO-66-NH 2 as the intermediate layer. The membrane was systematically characterized. Under the optimal preparation conditions, the bisphenol A removal rate was 97.13% with high applicability at different feed pH and feed concentration with good storage stability and reusability. The multifunctional synergistic effect of the biocatalytic membrane for micropollutant removal by rejection, adsorption and catalysis was analyzed. The membrane also has good treatment effect on micropollutants like antibiotics and for dye/salt mixture solution. Besides, the preparation method was expanded by replacing laccase with phosphotriesterase (PTE) to fabricate PTE-CLEAs biocatalytic membrane, which can have high removal rate of 94.04% for organophosphorus pesticide methyl paraoxophosphorus in water.
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EUROPEAN POLYMER JOURNAL
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2023
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IF 6
Pengyun Zhao,Lingxin Meng,Jingmei Xu,Jinxuan Lei,Kuirong Feng,Tian Lan,Zhe Wang
In this study, composite proton exchange membranes (PEMs) based on functional graphene oxide (GO) and carboxyl-containing sulfonated poly(arylene ether ketone sulfone)s organic matrix (C-SPAEKS) were synthesized. Modified GO nanosheets (ATP@GO) was synthesized by using GO as a template, then chemically bonded adenosine triphosphate (ATP) on GO nanosheets. Modified ATP@GO and composite membranes were characterized by FT-IR, 1 H NMR, SEM and XPS. These composite membranes exhibit outstanding proton conductivity, thermal stability and dimensional stability. Compared to C-SPAEKS membranes (32.3 mS cm −1 at 20 °C, 108.9 mS cm −1 at 90 °C), C-SPAEKS/ATP@GO-1 membrane showed enhanced proton conductivity (50.0 mS cm −1 at 20 °C, 184.8 mS cm −1 at 90 °C). Meanwhile, the open circuit voltage (OCV) and power density of C-SPAEKS/ATP@GO-1 were 0.9941 V and 466.33 mW/cm 2 , respectively, which were much higher than the C-SPAEKS (0.8973 V, 190.72 mW/cm 2 ), showing good fuel cell performance. The results show that functionalized GO could make an important contribution to proton conduction and improvement of comprehensive performance in composite membrane, which indicate that these composite membranes have the potential to be used as PEMs.
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TALANTA
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2023
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IF 6.1
Yao Zhao,Shu Zhang,Wang Yao,Yuxuan Zhu,Jing Qian,Juan Yang,Nianjun Yang
Hierarchically nanostructured binary transition metal oxide-based materials with high conductivity and catalytic activity are quite attractive for the electrochemical quantitative detection of environmental pollutants due to their natural abundance, variable oxidation state, and excellent synergies between metal sites. Herein, a new hierarchical MnO–Fe 3 O 4 @C/expanded graphite (EG) composite is designed and synthesized through a simple and in situ annealing method with the utilization of bimetallic organic framework (FeMn-MOF)/EG precursor. The synthesized MnO–Fe 3 O 4 @C/EG composite possesses a unique hierarchical nanoarchitecture that small-sized bimetallic oxide nanoparticles of 10–40 nm completely encapsulated by amorphous carbon layers of 2–4 nm are uniformly distributed on the EG platform. This distinctive structure combines the advantages of high conductivity, excellent catalytic activity, and strong stability. Resultantly, when it is applied to monitor environmental endocrine disruptors , the sensor exhibits a significant catalytic effect on the electrochemical oxidation of bisphenol A (BPA), inducing an amplified response current. In addition, the sensor shows a wide linear range of 1–50 μM and 50–400 μM for the BPA monitor, giving a sensitivity of 5208.8 and 1641.9 μA mM −1 cm −2 , respectively. This study offers a new approach to design hierarchical binary metal oxide-based sensing materials as well as to explore their electrochemical properties and applications for the determination of emerging contaminants.
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PubMed
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CHEMICAL ENGINEERING JOURNAL
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2023
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IF 15.1
Taozhen Li,Jingwen Pan,Xiaoning Wang,Zihao Fan,Tao Shi,Lei Wang,Baoyu Gao
Electron-rich Fe sites in iron-based catalysts provide sufficient electrons to activate peroxydisulfate (PDS) for organic pollutants degradation, whereas catalyst activity is restricted by the inert Fe(III)/Fe(II) conversion. Herein, we synthesized Fe and Mo co-doped carbon (Fe/Mo@C) catalysts to explore the effect of Mo doping on Fe(III)/Fe(II) cycling during PDS activation process. Compared to the sole Fe loaded carbon (Fe@C), the introduced Mo converted the iron to a lower valence state (Fe 0 and Fe(II)) during the catalysts preparation. Bisphenol A (BPA) was completely degraded within 10 min in Fe/Mo@C-PDS system with the degradation rate of 0.70 min −1 , which was 26 times higher than that in Fe@C-PDS system. Mechanism studies indicated that the introduction of Mo promoted the cycling of Fe(II)/Fe(III) in catalytic-oxidation system and accelerated the generation of more SO 4 •− , resulting in a significant improvement of the catalytic activity. Density functional theory (DFT) calculations revealed that Mo doping facilitated PDS adsorption onto Fe/Mo@C and accelerated the O-O breaking in PDS to produce more SO 4 •− for BPA degradation. Besides, the intermediates formed during the BPA degradation in Fe/Mo@C-PDS system exhibited lower bio-toxicity than the pristine BPA and those in Fe@C-PDS system. This work elucidates the mechanism of Mo doping to improve the catalytic activity of iron-based catalysts in sulfate-based advanced oxidation processes, providing a new strategy for solving the blockage of Fe(II)/Fe(III) cycle.
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CHEMICAL ENGINEERING RESEARCH & DESIGN
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2023
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IF 3.9
Huan Zhan,Xiaoyan Liu,Jinbing Huang,Xian Liu,Xulong Zhang,Jiaxiong Yao,Shiwei Xie
Activation of peracetic acid (PAA) by Fe species is the attractive advanced oxidation processes for the removal of antibiotics. However, achieving optimal performance in many of these processes often requires acidic pH conditions , which impedes practical application. In this study, an iron electrocoagulation (EC) system was devised to for activate PAA and oxidate sulfamethoxazole (SMX). Under optimal conditions, the degradation of SMX by the EC/PAA system reached 96.2% within 15 min, with a pseudo-first order reaction constant of 0.241 min −1 , but only consuming 0.044 kW·h/m 3 . Interestingly, the EC/PAA system showed a high buffering capacity in the initial pH range of 4–8 to maintain the final pH of around 7. The quenching experiments revealed both free radical and non-free radical pathways involved in the oxidation of SMX in the EC/PAA system. Specifically, the active species , including •OH, organic radicals (CH 3 COO• and CH 3 COOO•) and 1 O 2 , contribute 86.77%, 5.53% and 7.70%, respectively. These findings suggest that the EC/PAA system has unique advantages and potential for the degradation of antibiotic organics such as SMX in aquatic environments due to its strong oxidative capacity, wide pH range and high buffering capacity.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2023
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IF 8.2
Lin Peng,Shasha Chen,Hongjin Lin,Chunyan Wan,Xiang Li,Shiwen Xu,Shu Li
Bisphenol A (BPA) is an endocrine disruptor. Excessive BPA intake can damage the structure and function of the respiratory tract. Dietary selenium (Se) deficiency may also cause immune tissue damage. To investigate the potential mechanism of BPA on tracheal damage in selenium-deficient chickens and the role of microRNAs (miRNAs) in this process, we established in vitro and in vivo Se deficiency and BPA exposure models and screened out miR-155 for follow-up experiments. We further predicted and confirmed the targeting relationship between miR-155 and TRAF3 using TargetScan and dual luciferase assays and found that miR-155 was highly expressed and caused inflammatory damage. Further studies showed that BPA exposure increased airway oxidative stress, activated the NF-κB pathway, and caused inflammation and immune damage in selenium-deficient chickens, but down-regulating miR-155 and NAC treatment could reverse this phenomenon. This suggested that these pathways are regulated by the miR-155/TRAF3/ROS axis. In conclusion, BPA exposure aggravates airway inflammation in selenium-deficient chickens by regulating miR-155/TRAF3/ROS. This study revealed the mechanism of BPA exposure combined with Se deficiency in tracheal inflammatory injury in chickens and enriched the theoretical basis of BPA injury in poultry.
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PubMed
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SEPARATION AND PURIFICATION TECHNOLOGY
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2023
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IF 8.6
Yi Gao,Xinyang Tan,Guanlong Wang,Xiaoli Dong,Xiufang Zhang
The water treatment performance of membrane filtration is usually restricted via the paradox between permeability and selectivity. Herein, the nitrogen doped porous carbon supported Co catalysts (CoNPC), serving as both porous filler and peroxymonosulfate (PMS) activator, were firstly filled into polyvinylidene fluoride (PVDF) matrix to construct a novel mixed matrix catalytic membrane (CoNPC@PVDF) for enhanced water purification. Owing to the robust binding between CoNPC and PVDF, a high loading (50 wt%) and even dispersion of CoNPC were realized in CoNPC@PVDF, and its permeability and selectivity were both improved with the increase of CoNPC content. The optimum CoNPC@PVDF with PMS activation assistance (FCP) exhibited effective phenol removal at short retention time (1.5 s) and high permeability (256.6 L m −2 h −1 bar −1 ). The performance of CoNPC@PVDF FCP was 2.9 and 2.5 times higher than that of filtration alone and PMS activation alone, respectively, and even dramatically outweighed the reported catalytic membranes and heterogeneous catalysts. The outstanding performance of CoNPC@PVDF catalytic membrane was mainly attributed to its thin membrane structure and high filling degree of CoNPC, resulting in ultrahigh mass transfer rate (1.8 × 10 −4 m s −1 ) and more exposed active sites for enhanced PMS activation into radicals (mainly •OH and SO 4 •− ) towards pollutant removal.
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Journal of Environmental Chemical Engineering
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2023
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IF 7.7
Xin Xiang,Wenxuan Deng,Zhiyi He,Dongyun Chen,Najun Li,Qingfeng Xu,Hua Li,Jianmei Lu
In recent years, oil spills and the discharge of industrial organic wastewater have not only damaged society and the economy, but also have had a negative impact on the human environment. The composition of oily wastewater is complex and hazardous. It mainly comprises insoluble organic substances and unsaturated aliphatic hydrocarbons. It exists in the form of oil–water mixtures, freely suspended emulsions, and stable emulsions containing surfactants. The shortage of fresh water resources and how to effectively separate oil and water present serious challenges to the scientific community. In this study, we designed a graphene aerogel with magnetic oil-absorbing functionality, which not only has emulsion-breaking functionality, but also can repeatedly adsorb organic pollutants . More importantly, it exhibits a strong Fenton catalytic effect and can effectively degrade pollutants. The aerogel designed in this research integrates adsorption, catalysis and degradation, and exhibits excellent purification of wastewater containing pollutants such as dyes, antibiotics and aromatic hydrocarbons , providing a novel insight into the treatment of oily wastewater.
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JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2023
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IF 10.9
Rui-Jie Pan,Jing Wu,Jin Qu,Tingting Zhang,Fan-Zhen Jiao,Mang Zhao,Meng-Yan Han,Xiaofeng Li,Zhong-Zhen Yu
Catalytic CoFe 2 O 4 and solar-thermal carbon nanotube decorated bamboo fabrics (CCBF) are fabricated for integrating efficient solar steam generation from wastewater with catalytic degradation of its organic contaminants. Thanks to the numerous porous channels and polar groups of bamboo fabric and the efficient solar-thermal energy conversion of black carbon nanotubes, the porous and hydrophilic CCBF exhibits fast upward transport of water, efficient solar light absorption, and high solar-thermal energy conversion efficiency. The decorated CoFe 2 O 4 not only enhances the solar-thermal energy conversion efficiency of CCBF but also activates potassium peroxymonosulfate to generate abundant highly active species for catalytic degradation of bisphenol A (BPA). Furthermore, folding the CCBF into a peak-like 3D evaporator can enhance solar energy utilization, and gain environmental energy for promoting solar-thermal water evaporation and catalytic degradation performances. The 3D CCBF evaporator achieves a water evaporation rate of 2.72 kg m –2 h –1 under 1-sun irradiation. Meanwhile, 100% of the BPA in the seawater can be degraded within 10 min. An exceptional high purification efficiency of 27.72 kg m –2 h –1 is achieved with the 3D evaporator during a long-term treatment of BPA-containing seawater under 1-sun irradiation. This work demonstrates efficient purification of seawater/wastewater with both metal ions and organic pollutants by simultaneous solar-thermal evaporation of water and catalytic degradation of organic pollutants.
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CHEMICAL ENGINEERING JOURNAL
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2023
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IF 15.1
Huihui Luo,Fan Yang,Chao Li,Yifei Zhong,Cheng Cheng,Shaolei Wang,Shangbin Jin
Anhydrous proton conducting polymer membrane materials have raised much attention in the application of high-temperature proton-exchange membranes (HT-PEMs) fuel cells, which convert chemical energy into electrical energy. Polybenzimidazole-based polymers, as typical materials for HT-PEMs, their compact structures result in small fractional free volumes (FFV), which is not conducive to the adsorption and retention of proton carriers. Herein, a series of polybenzimidazole-based polymers of intrinsic microporosity (PIM-PBIs) were synthesized. PIM-PBIs possess the benzimidazole units and porous structures, and have good thermal stability and large specific surface area (100 ∼ 400 m 2 /g). PIM-PBIs are further embedded in polyvinylidene fluoride (PVDF) to form mixed matrix membranes for high-temperature proton conduction. The resulting membranes exhibit high proton conductivity up to 90.11 mS cm −1 at 140 ℃ and high phosphoric acid (PA) retention rate of 90.0 %. This work provides a facile method for the precise design and preparation of proton-conducting porous materials.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2023
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IF 22.1
Rongrong Ding,Guannan Zhou,Chuanshu He,Wenqiang Li,Yiran Wang,Xiaocheng Liu,Bo Lai,Yang Mu
The process of FeS oxygenation is intrinsically associated with the fate of contaminants in heterogeneous aquifers, whereas the impacts of common heavy metals are poorly understood. In this study, we found that the introduction of Co 2+ and Ni 2+ (Me 2+ ) resulted in a remarkable 3–10-fold enhancement in the degradation of bisphenol A , which stemmed from the significant increase in the generation of •OH and SO 4 •− . The improved production of reactive species was primarily attributed to the accelerated regeneration of Fe(II); the introduction of Me 2+ manipulated the electronic structure of FeS and consequently facilitated electron transfer from S 2- to Fe(III), as revealed by experimental evidence and density functional theory calculations. This study represents the first endeavor to underscore the influence of coexisting heavy metals on contaminant degradation during FeS oxygenation.
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