Journal of Environmental Chemical Engineering
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2023
·
IF 7.7
Hengyang Mao,Hengqi Shi,Zhijie Zhang,Shouyong Zhou,Minghui Qiu,Mingmin Jia,Meisheng Li,Yijiang Zhao,Shanshan Xia,Zhentao Wu
Ceramic membranes have drawn attention in oil-in-water (O/W) treatment due to natural hydrophilicity and excellent chemical stability, however their application was restricted by high cost. In this work, a cost-effective Al 2 O 3 -based ceramic support was prepared at sintering temperature of 1500 °C with low-cost mixed-dimensional attapulgite (MDATP) as aid. The composite support with addition of 10 wt% MDATP and 3 wt% powdered carbon possessed an average pore size of 3 µm, bending strength of 63.7 MPa, pure water permeability of 1.32 × 10 4 L·m −2 ·h −1 ·bar −1 . Mullite was formed due to the reaction between Al 2 O 3 and SiO 2 in MDATP during sintering, which played a key role in preparing support with corrosive resistance performance. Then, a superwetting microfiltration (MF) membrane with pore size of 0.18 µm and permeability of 1470 L·m −2 ·h −1 ·bar −1 was obtained by coating ATP nanofiber on the Al 2 O 3 -MDATP support with sintering temperature of 600 °C. The molecular dynamics results showed that the ATP can repel oil fouling with interaction energy of − 872 Kcal·mol −1 . The excellent O/W emulsion separation efficiency of the MF membrane further demonstrated the feasibility of ATP and its by-products in decreasing membrane cost and improving performance.
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高影响因子
ENVIRONMENTAL POLLUTION
·
2023
·
IF 8.9
Xuejuan Hou,Hui Nan,Xin Chen,Fei Ge,Yun Liu,Feng Li,Dayi Zhang,Jiang Tian
Glyphosate (Glp) was encapsulated onto the dopamine-modified attapulgite to develop an attapulgite-based nano-enabled Glp (DGlp) in this study with comparable weed control effects to pure Glp and commercial Glp solutions. Within 24 hours, the active Glp molecule was slowly released from DGlp at a maximum remaining rate of over 90%, and then degraded similarly to Glp solution in soil. The addition of DGlp improved soil available phosphorus (P) contents, phosphatase activity, and enzyme extractable P fraction. However, compared to Glp solution, DGlp addition had no effect on the transformation of soil inorganic P fractions. The 16S rRNA sequencing and co-occurrence network results revealed that DGlp had no significant effect on the soil bacterial diversity but diminished the complexity of soil bacterial network. According to the Mantel test, DGlp addition stimulated soil phosphatase activity and proliferation of dominant bacterial taxa (Proteobacteria and Firmicutes) capable of degrading Glp. Proteobacteria and Firmicutes that had been extensively recruited and enriched for their phosphatase activities may have mobilized reactive enzyme-P, significantly enhancing the transformation of reactive organic P and P-pool in soil. These results contributed to our understanding of the ecotoxicity and environmental impacts of nano-enabled Glp prior to its successful and sustainable application in agriculture.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2021
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IF 8.128
Jiaojiao Zhang,Jinfei Wei,Bucheng Li,Xia Zhao,Junping Zhang
Magnesium (Mg) alloy has wide potential applications due to its unique properties, but is apt to corrosion. Recently, superhydrophobic coatings are receiving great interest for corrosion protection of metals but suffer from short lifespan. Here, we report a strategy for long-term corrosion protection of Mg alloy by designing two-layer self-healing superamphiphobic coatings based on shape memory polymers (SMP) and attapulgite. The superamphiphobic coatings are composed of a bottom SMP coating containing a corrosion inhibitor (1, 2, 3-benzotriazole, BTA) and ceresine wax microparticles and a top superamphiphobic attapulgite coating. The two-layer self-healing coatings have excellent superamphiphobicity and initial anti-corrosion performance. The Mg alloy with the coatings can withstand immersion in 3.5 wt% NaCl solution for 80 days and neutral salt spray with 5 wt% NaCl for 54 days. Furthermore, the coatings show excellent self-healing capability towards various physical damages, such as 10 scratching/self-healing cycles at the same position, hexagonal star scratching and grid scratching. Moreover, the physically damaged coatings exhibit self-healing behavior of the microstructure and superhydrophobicity, driven by the shape memory effect of the bottom SMP layer. Thus, the self-healed coatings can still withstand 60 days of 3.5 wt% NaCl solution immersion and 30 days of 5 wt% NaCl salt spray. This study paves the way for applying super anti-wetting coatings for long-term corrosion protection of metals.
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Journal of CO2 Utilization
·
2021
·
IF 7.132
Zairong Yan,Qinghe Liu,Lixing Liang,Jing Ouyang
Here we report a Ni/TiO 2 loaded on attapulgite (ATP) composite catalyst with fairly good CO 2 conversion performance amd outstanding reusability (up to 80 h re-use circles) at ambient pressure. The composite was prepared by sol-gel method using ATP powder as the matrix to load TiO 2 and Ni nanocrystals in an equivalent impregnation process. Catalytic activity of the newly synthesized catalysts was investigated towards hydrogenation of CO 2 at atmospheric pressure in varied temperature between 200 and 450 °C. And in the reaction process, the flow rate of CO 2 gas was 2.5 mL/min and the concentration ratio of H 2 : CO 2 is always 4. The GHSV was 30,000 h −1 . Among the investigated catalysts, the 8 % Ni-TiO 2 -ATP catalyst showed preferable activity at 450 ℃. Improved activity and reducibility were found when adding 8 % Ni due to the enhanced CO 2 activation compared with the pure TiO 2 or ATP matrix, as well as with the other Ni dosages. These improvements were obtained probably due to its higher surface area than TiO 2 catalyst, more surface hydroxyls, and better dispersion on the ATP matrix.
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JOURNAL OF MEMBRANE SCIENCE
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2021
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IF 8.742
Atian Xie,Jiuyun Cui,Yin Liu,Changguo Xue,Yi Wang,Jiangdong Dai
Here, we report a Janus membrane constructed using a sustainable regenerated cellulose (RC) membrane as matrix, based on biomimetic polydopamine (PDA) interface regulation and superhydrophobic attapulgite (SOATP) spraying. The dual-action PDA was reasonably interfacially-regulated by high temperature-induced self-polymerization to construct a superhydrophilic surface with PDA layer/particle hierarchical structures, which strengthened the interfacial interactions between the organic RC substrate and inorganic SOATP. Subsequently, SOATP was sprayed on the bottom surface of membrane via a simple spraying method to obtain a superhydrophobic surface. The resulting RC@PDA/SOATP Janus membrane exhibited a superhydrophilic top surface and superhydrophobic bottom surface, with excellent separation efficiency (>99%) and acceptable permeation flux toward different types of emulsions. The membrane also showed good renewability, excellent environmental durability and structural stability. The facile and versatile interface regulation and spraying techniques, as well as the environmentally friendly and economical raw materials, were used, which makes the Janus membrane a promising solution for a range of applications in the field of oil-water separation.
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JOURNAL OF POLYMER SCIENCE
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2020
·Vol. 58
·期 6
·903-913
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IF 0
Haicun Yang,Zinan Cai,Haotian Liu,Zheng Cao,Yanping Xia,Wenzhong Ma,Fanghong Gong,Guoliang Tao,Chunlin Liu
In this work, the compatibilization effects of hybrid maleated POE/attapulgite hybrid compatibilizer (M-POE/ATP) on the immiscible polypropylene/poly(glycolic acid) (PP/PGA) blends was investigated. The hybrid compatibilizer integrating strengthening, toughening and compatibilization functions was prepared via one-step reactive extrusion using peroxidated ATP as the initiator. Then, the effects of compatibilizer dosage on the mechanical, thermal, rheological and morphological characteristics of blends were evaluated in detail. It was found that the hybrid compatibilizer resulted in the significantly enhanced compatibility and mechanical performance. Increased amount of compatibilizer content fractionated and almost wholly suppressed the crystallization process of PGA. The compatibilized blends showed higher thermal stability than pure PGA, and lower storage modulus and complex viscosity at higher shearing frequency. PGA in the blends presented a much lower degradation rate, which lead to the higher strength retention of 81% for the blend with 4 wt% of compatibilizer in buffer solution after 35 days. Graphical The maleated POE/attapulgite (M-POE/ATP) hybrid compatibilizer was prepared via one-step reactive extrusion using peroxidated ATP as the initiator to compatilize the immiscible polypropylene/poly(glycolic acid) (PP/PGA) blends. The effective integration of strengthening, toughening, and compatibilization functions for this compatibilizer was confirmed by the enhanced mechanical performance, improved compatibility and the transform of fractured surface morphology of blends in the presence of M-POE/ATP.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2019
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IF 4.784
Xue Xue Liang,Xiao-Kun Ouyang,Songyan Wang,Li-Ye Yang,Fangfang Huang,Chao Ji,Xiaohong Chen
The performance of Fe 3 O 4 /attapulgite (APT) nanoparticles in Pb(II) adsorption from aqueous solutions could be improved by modifying the particles with aminopropyltriethoxysilane (APTS) and then combining with chitosan (CS) into beads. After preparing the APTS-Fe 3 O 4 /APT@CS beads, their surface morphology and crystal phases were analyzed by Fourier-transform infrared spectroscopy, scanning electron microscopy, and X-ray diffraction. The magnetic properties of APTS-Fe 3 O 4 /APT@CS were studied by a vibrating sample magnetometer, while their heat resistance and stability were characterized by thermal weight analysis. A recycling test and comparison of adsorption capacities were also carried out. The adsorption capacity of Fe 3 O 4 /APT was improved by the modification with APTS and CS. The adsorption process conforms to the pseudo-second-order kinetic and Langmuir adsorption isotherm models. The adsorption of Pb(II) reaches a maximum of 625.34 mg/g, which compares favorably with other reported adsorbents. The results show that APTS-Fe 3 O 4 /APT@CS is a promising hybrid adsorbent for effective removal of Pb(II) from water.
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高影响因子
ANALYTICA CHIMICA ACTA
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2016
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IF 4.712
Xiaoling Yang,Kexin Qiao,Yiren Ye,Miyi Yang,Jing Li,Haixiang Gao,Sanbing Zhang,Wenfeng Zhou,Runhua Lu
In this study, the superparamagnetic attapulgite/Fe 3 O 4 /polyaniline (ATP/Fe 3 O 4 /PANI) nanocomposites were successfully synthesized by a one-pot method. Fe (III) was applied as both the oxidant for the oxidative polymerization of aniline and the single iron source of Fe 3 O 4 formed by the redox reaction between aniline and Fe (III). The ATP/Fe 3 O 4 /PANI was used as sorbent for magnetic dispersive solid phase extraction (MDSPE) of benzoylurea insecticides (BUs) in environmental water samples. The as-prepared nanocomposite sorbents were characterized by Fourier transform infrared spectra (FT-IR), X Ray diffraction (XRD), scanning electron microscopy(SEM), transmission electron microscopy (TEM), and vibrating sample magnetometry . Various experimental parameters affecting the ATP/Fe 3 O 4 /PANI-based MDSPE procedure, including the composition of the nanocomposite sorbents, amount of ATP/Fe 3 O 4 /PANI nanocomposites, vortex time, pH, and desorption conditions were investigated. Under the optimal conditions, a good linearity was observed for all target analytes, with correlation coefficients (r 2 ) ranging from 0.9985 to 0.9997; the limits of detection (LOD) were in the range of 0.02–0.43 μg L −1 , and the recoveries of analytes using the proposed method ranged between 77.37% and 103.69%. The sorbents exhibited an excellent reproducibility in the range of 1.52–5.27% in extracting the five target analytes. In addition, the intra-day and inter-day precision values were found to be in the range of 0.78–6.86% and 1.66–8.41%, respectively. Finally, the proposed ATP/Fe 3 O 4 /PANI-based MDSPE method was successfully applied to analyze river water samples by rapid preconcentration of BUs.
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高影响因子
COMPOSITES COMMUNICATIONS
·
2024
·
IF 6.5
Yunyirui Liu,Changhua Li,Rongkai Wu,Jixin Gong,Bihe Yuan
Enhancing flame retardancy and fire-warning capabilities of thermal insulation materials used in building external walls is crucial for ensuring fire safety as well as guarding people's lives and assets. Herein, we have developed an environmentally friendly nano-coating that possesses flame-retardant and early-warning properties by integrating graphene oxide (GO) and attapulgite (ATP) onto melamine foam (MF) through a layer-by-layer self-assembly method (LBL). The GO-ATP-MF composite demonstrates a rapid response to flame (<1 s) due to GO's thermally induced reduction. Additionally, ATP's synergistic flame-retardant effects on both gas and condensed phases contribute to outstanding flame retardancy, enabling an enduring fire alarm duration (>1330 s). The warning duration time of this composite surpasses the majority of GO-based fire-warning nano-coatings reported to date. Moreover, incorporating a Bluetooth wireless transmission system facilitates real-time fire information sharing among smart devices, thereby optimizing fire signal transmission efficiency. Thus, this study advances GO-based flame-retardant nano-coatings and devices with high sensitivity and prolonged fire-warning capabilities, providing an innovative idea to enhance the fire safety of MF as a thermal insulation material.
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高影响因子
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
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2024
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IF 4.5
Yu Wang,Lisi Yan,Xu Yan,Jianqiang Ding,Bo Cheng,Jing Yang,Binbin Li,Xinyu Wang
The micro-nano structure of drug delivery systems, which realize the release of the drug in stages, represent a promising therapeutic approach for tumor chemotherapy. In this study, we developed a drug delivery system in which nano-PLGA was coated on the surface of attapulgite microspheres (ATT-MS) loaded with doxorubicin hydrochloride (DOX). Nano-PLGA surrounding ATT-MS formed a satellite structure, which improved the drug release rate by blocking the drug release channels with the nano-PLGA. The drug delivery system achieves a high DOX encapsulation efficiency (98 %) and enables passive, tumor-selective drug release. The zeta potential and drug release curve showed that DOX in this drug delivery system is more readily released in the tumor microenvironment. The fluorescence imaging and Western blot analysis showed that the drug delivery system has the potential to improve tumor resistance. Moreover, the in vivo experiment showed that the system not only maintained the anticancer activity but also reduced the organ damage. In conclusion, this micro-nano structure of the drug delivery system may provide a novel approach to effectively deliver DOX to the tumor and reduce systemic toxicity.
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高影响因子
MICROCHEMICAL JOURNAL
·
2020
·
IF 3.594
Mingxin Niu,Zuopeng Li,Sanbing Zhang,Wenjuan He,Jing Li,Runhua Lu,Haixiang Gao,Aijun Zeng,Wenfeng Zhou
A magnetic Metal-Organic Frameworks composite material modified with attapulgite was prepared via in situ growth method and characterized by Fourier transform infrared, X-ray diffraction, scanning electron microscopy, N 2 adsorption-desorption and vibration sample magnetometer analysis. It was applied as an efficient adsorbent for the magnetic solid-phase extraction of seven benzoylurea insecticides from environmental water samples couple with high-performance liquid chromatography detection. Under the optimized experimental conditions, the established procedure exhibited low limit of detection ranging from 0.75 to 1.5 µg L −1 and good linear response ranging from 2.5 to 500 µg L −1 with coefficients of determination >0.99. The method recoveries of spiked analytes at the concentrations of 20, 100 and 200 µg L −1 in real water samples were 73.56–99.63% with the relative standard deviations <7.53%. Moreover, the hybrid materials showed excellent reusability and there was no loss observed for the extraction efficiency within five cycles. This study highlighted the potential of functional Metal-Organic Frameworks as efficient adsorbents in sample pretreatment.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2021
·
IF 6.953
Ping Sun,Wei Zhang,Binze Zou,Lincheng Zhou,Zhengfang Ye,Quanlin Zhao
Attapulgite (ATP) has a unique porous layered chain structure and is an excellent environment-friendly decolorizer. However, its high viscosity makes it difficult to separate. First, it was combined with magnetic Fe 3 O 4 nanoparticles to obtain Fe 3 O 4 -ATP that is easy to recycle and reuse. Then, Fe 3 O 4 -ATP nanoparticles were embedded in chitosan (CS) gel beads, and glutaraldehyde was used for cross-linking and curing. Lastly, ethylenediaminetetraacetic acid (EDTA) was successfully connected to Fe 3 O 4 -ATP/CS gel beads through amidation reaction, which further increased the capability of the adsorbent to adsorb heavy metal ions. The prepared magnetic composite adsorbent is a sphere with a rough surface and porous structure. The maximum adsorption capacity of the prepared Fe 3 O 4 -ATP/EDTA/CS adsorbent for Pb(II), Cu(II), and Ni(II) is 368.32, 267.94, and 220.31 mg g −1 , respectively. After 5 times of repeated use, Fe 3 O 4 -ATP/EDTA/CS still showed good adsorption capacity for Cu(II), Pb(II), and Ni(II). Fe 3 O 4 -ATP/EDTA/CS has a large adsorption capacity for heavy metal ions, a wide pH applicability, good reuse, and rapid magnetic separation. In addition, Cu(II) loaded Fe 3 O 4 -ATP/EDTA/CS also showed good catalytic degradation performance for bisphenol A. This study prepared a new type of adsorbent with good adsorption performance and provided a promising method for the treatment of wastewater.
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高影响因子
危险品化学品经营许可证（带存储）