ACS Sustainable Chemistry & Engineering
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2018
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IF 6.14
Xiao-Yan Xie,Xin-Yu Qian,Shi-Chao Qi,Ju-Kang Wu,Xiao-Qin Liu,Lin-Bing Sun
Metal–organic frameworks (MOFs) have drawn much attention for their highly promising applications, but the applications are often obstructed by the congenitally hydrothermal instability of the MOFs. Hybridizing the MOFs with other materials has been proved to be effective to solve the hydrothermal problems. Herein, a vapor-induced crystallization (VIC) method is employed for the first time to fabricate the hybrid MOFs based on the Cu-BTC and the natural clay attapulgite (NCA). Compared with the traditional solvothermal method for the hybridization, the VIC one has the obvious advantages of both reducing the solvent consumption and inducing the crystals self-repairing to generate perfect crystals of the hybrid MOFs. With an appropriate content of the NCA, the hybrid MOFs are proved to be highly stable even undergoing the hot water vapor (90 °C) for 12 h. The hybrid MOFs also exhibit the improved catalytic activity in catalyzing the styrene oxide ring-opening. The molar conversion of the styrene oxide over the hybrid MOF reaches 93.8% within 20 min, even higher than that of the unadulterated Cu-BTC (68.0%). These results indicate the promising application of the hybrid MOFs as the hydrothermal-stable and highly active heterogeneous catalysts.
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ANALYTICAL AND BIOANALYTICAL CHEMISTRY
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2018
·Vol. 410
·期 25
·6643-6651
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IF 3.307
Chai Mengsa,Chen Yihui,Xuan Rongrong,Ma Junfeng,Jin Zhenfeng,Wang Tingting,Qiu Dan,Zhang Lihua,Zhang Yukui
A polyethyleneimine (PEI)-modified attapulgite was employed as a new adsorbent for solid-phase extraction (SPE) of chlorophenols (CPs) from environmental water samples. Key factors pivotal to extraction efficiency, such as organic additive, pH, salt, sample loading volume, elution volume, and sample loading flow rate, were investigated. The maximum adsorption capacity of CPs reached 38 mg/g, and the adsorption behavior could be described with the Langmuir isotherm model. The developed SPE procedure was then tested on river water samples. Of this cartridge, 0.4 g could be used to treat up to 100 mL of the water sample, with high recoveries achieved. The limit of detection ( S / N = 3) and the limit of quantification ( S / N = 10) were in range of 0.08–0.56 and 0.27–1.88 ng/mL, respectively. The mean recoveries of CPs spiked in river water samples ranged from 84.4 to 96.8% with relative standard deviations for the intra-day and inter-day less than 6.30%. The developed SPE method exhibited high sensitivity, high selectivity, excellent accuracy, and good repeatability to the analysis of trace CPs in complicated aqueous matrices.
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高影响因子
NEW JOURNAL OF CHEMISTRY
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2024
·
IF 2.7
Haosen Xiong,Renyang Yang,Xiaohong Fu,Wensheng liao,Jiagen Li,Shuyong Shang,Songqing Liu,Qiang Zhang
Aflatoxin B1 (AFB1) is one of the most harmful mycotoxins to human and environmental health. In this paper, a novel electrochemical AFB1 immunosensor using attapulgite composite N-phenylglycine as a conductive material is developed. The strong π–π and electrostatic interactions between the AFB1 antibody and the nanomaterial are investigated. The developed electrochemical AFB1 immunosensor exhibits high sensitivity, with a detection limit of 0.011 ng mL−1 and a quantitation limit of 0.035 ng mL−1 (S/N = 3). The recoveries for three different concentrations of AFB1 range from 97.5% to 104.6%, with a relative standard deviation of stability less than 2.0%. ATP-PNPG possesses more oxygen defects and adsorbed oxygen than ATP-NPG. These properties enhance its electronegativity and make it more conducive to detecting low concentrations of AFB1 through electrochemical sensing technology. Finally, the electrochemical AFB1 immunosensor demonstrates good selectivity, stability, and reusability for detecting AFB1 in corn samples, exhibiting a high recovery rate.
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Journal of Cleaner Production
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2025
·
IF 10
Nana Jing,Chaowen Chen,Chuang Chen,Xue Yuan,Xueqi Ma,Guopeng Teng,Jia Zhang,Xingjiang Li,Zhengyan Wu
To minimize the pesticide loss and enhance the efficiency of active ingredient utilization, the pH-responsive controlled-release pesticide with easy operation has been widely applied despite for its potential on bothering the non-target organisms while using acid or alkaline alone. To overcome that obstacle, we developed an environmentally safe herbicide particle with a smart wetting surface that can be regulated through consecutive base-acid stimuli to maintain stable pH levels. Herein, attapulgite (ATP) is mixed with glyphosate (Gly) initially and the resultants are coated by suspensions of phenylamine-modified ATP (ph-ATP) and amino silicon oil (ASO), ultimately the outmost polyvinyl pyrrolidone (PVP) are constructed to acquire the smart herbicide (AG@ph-AA@PVP). The base may destroy the outmost PVP membrane, and the later acid treatment turns ph-AA layer gradually from hydrophobic to hydrophilic due to protonation of aniline groups, both of which allow water to invade further and promote Gly release. Therefore, the AG@ph-AA@PVP appears with excellent base-acid sensitivity and controlled-release performance, being demonstrating by the burst Gly release in water and significant weeds control efficiency in pot experiments. The interaction of the materials and the surface wettability were analyzed for explaining the controlled-release mechanism. Besides, AG@ph-AA@PVP possesses high environmental stability and good biosafety. This work develops a simple and feasible technology for environmental-safe and on-demand Gly delivery, assisting for advancement of sustainable and green agriculture.
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Materials Research Express
·
2017
·Vol. 4
·期 8
·085009
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IF 1.068
Zongtang Liu,Chenggang Gu,Yongrong Bian,Xin Jiang,Yufeng Sun,Zhenghao Fei,Jingtao Dai
In this study, Fe/Ni bimetallic nanoparticles were supported on the attapulgite (A-Fe/Ni) to enhance the degradation reactivity of decabrominated diphenyl ether (BDE209) in aqueous solution. The Fe/Ni nanoparticles were well distributed on the attapulgite surface with an average diameter of 20–40 nm. The removal percentage of BDE209 by A-Fe/Ni was 1.59 times higher than Fe/Ni nanoparticles alone because attapulgite could act as supporting material to disperse Fe/Ni nanoparticles and prevent Fe/Ni nanoparticles from aggregation. The degradation kinetics for BDE209 debromination by A-Fe/Ni could be well described by a pseudo-first-order model, and the debromination rate constant of BDE209 increased with increasing the dosage of A-Fe/Ni, water/THF ratio, and decreasing the initial BDE209 concentration and solution pH. The degradation products were identified using a third-order polynomial regression equation between the experimental and reference gas chromatography relative retention times. Stepwise debromination from n-bromo-DE to (n − 1)-bromo-DE was a possible pathway with bromines being substituted sequentially by hydrogen. The preferred elimination of bromines of BDE209 by A-Fe/Ni followed the debromination preference of para-Br > meta-Br > ortho-Br. The results provide evidences for understanding the debromination mechanism of polybrominated diphenyl ether by clay-supported Fe/Ni nanoparticles.
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COMPOSITES SCIENCE AND TECHNOLOGY
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2016
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IF 3.897
Zhenzhen Wei,Yinli Liu,Xueli Wang,Jianyong Yu,Faxue Li
Clearly understanding the structural development of materials during their preparation and processing allows for the fabrication of materials with expected properties that can be tailored for specific applications. In this work, we first presented the generation of poly(butylene succinate- co -terephthalate) (PBST) nanocomposites by combining the polymerization of copolymer with the simultaneous incorporation of fibrous attapulgite (ATP) nanoparticles with good dispersion . The lamellar structure , crystallization behavior and mechanical properties of PBST nanocomposites can be regulated by tuning the content of nanoparticles. The effects of nanoparticle morphology on the structure and properties of PBST nanocomposites with fibrous ATP and spherical silica nanoparticles also were investigated. The question why ATP nanoparticles always bring about faster crystallization rate and larger elongation at break than those caused by silica nanoparticles was answered as well. Furthermore, a schematic for the evolution of the hierarchical structure of PBST nanocomposites at each level during cooling was proposed. It was found that the formation and development of the hierarchical structure of PBST nanocomposites were highly temperature-dependent, and their cumulative growth leads to the final crystalline and hierarchical state. Studies of nanoparticles themselves and detailed changes of polymer structure in various scales are opening pathways for engineering flexible composites that can exploit the advantages of both polymers and nanoparticles.
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Surfaces and Interfaces
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2024
·
IF 5.7
Shun Lu,Chaohu Xiao,Min Yin,Yang Jin,Shuqin Xu,Qi-Meige Hasi,Yuhan Zhang,Lihua Chen
Solar-driven interfacial evaporation (SIE) is a promising fresh water acquisition technology to address the global water resource shortage. Therefore, solar evaporators with efficient photothermal conversion efficiency and multifunctional purification capabilities are still in high demand. At present, a variety of photothermal conversion materials have been explored, however, there are few studies on integrating interfacial evaporation and photocatalytic capabilities into one solar steam generation system collaboratively. In this work, a new double-layered solar interfacial evaporator (MXene/PPy-ACA) was fabricated by using polymeric ionic liquid grafted attapulgite (ATP-PIL) as the matrix and modified the upper surface by MXene and polypyrrole (PPy). The evaporator can not only carry out seawater desalination efficiently, but also has good photocatalytic degradation effect on organic dyes. The MXene/PPy-ACA achieves an evaporation rate of 1.53 kg m −2 h −1 and corresponding to an efficiency of 92.17 % under irradiation of 1 sun. In addition, duing to the ionic repulsion effect of ATP-PIL, the MXene/PPy-ACA possesses good salt resistance. When tested in 20 wt% high brine, the evaporation rate is measured to be 1.40 kg m −2 h −1 . Moreover, owing to the superb photocatalytic properties of MXene and PPy, the MXene/PPy-ACA exhibits remarkable photocatalytic efficiency towards organic dyes, achieving degradation rates of 94.9 %, 67.49 %, and 65.11 % for methyl orange (MO), rhodamine B (RhB), and methylene blue (MB), respectively. The prepared interfacial evaporation system can also run stably in acid and alkali solution, and has a good practical application prospect. This study may offer an alternative approach in achieving clean water via SIE of seawater and complex wastewater.
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Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Chaolong Liu,Yadan Guo,Shuaihang Li,Keng Xuan,Yaoping Guo,Jun Li,Xuegang Wang,Xiaomeng Li,Zhongkui Zhou
Photocatalytic reduction of uranium(VI) via g-C 3 N 4 is a promising and efficient method for the recovery of radioactive uranium contamination from wastewater. In this work, the mesoporous sulfur-doped g-C 3 N 4 @attapulgite composite was first synthesized via a two-step hydrothermal-roasting method with (NH 4 ) 2 S 2 O 8 as the sulfur source and attapulgite as the supporter, respectively. As expected, the recovery efficiency of uranium(VI) using S-doped g-C 3 N 4 was 1.80 times higher than that of g-C 3 N 4 . Additionally, compared to S-doped g-C 3 N 4 , the mesoporous S-doped g-C 3 N 4 @attapulgite composite exhibited further improved photocatalytic efficiency and stability. The experimental results further showed the uranium(VI) was quickly eliminated within 20 min by mesoporous S-doped g-C 3 N 4 @attapulgite, and the recovery rate of which remained at 88.4 % even after seven cycles. According to the XPS results and trapping experiments, the excellent uranium(VI) recovery and stability can be attributed to the adsorption capacity of attapulgite and the e - reduction from sulfur doping g-C 3 N 4 , respectively. This result contributes to understanding the enhanced photocatalytic reduction mechanism of uranium(VI) and to achieving the high-efficiency recovery of uranium from wastewater using the mesoporous S-doped g-C 3 N 4 @attapulgite composite.
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高影响因子
INTERNATIONAL JOURNAL OF PHARMACEUTICS
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2025
·
IF 5.2
Shiwen Gong,Wentao Ma,Die Hu,Haixing Xu,Binbin Li,Xinyu Wang
Inflammatory bowel disease ( IBD) is an idiopathic, lifelong, and devastating chronic inflammatory disease of the gastrointestinal tract. Berberine, an alkaloid extracted from the Chinese herb Huanglian, is a pharmaceutical ingredient with antibacterial, anti-inflammatory, and antiviral pharmacological effects in Chinese medicine. However, direct administration of berberine requires high doses due to its low bioavailability and high waste in the stomach. In this study, we prepared berberine-loaded pH-responsive Eudragit® FS 30D-attapulgite (FS-ATT) microspheres for the targeted treatment of colitis. The microspheres had pH-responsive release behavior, with minimal berberine release (about 5.97%) in simulated gastric fluid and high berberine release in simulated colonic fluid (about 69.27%). In addition, it was revealed by in vivo biological evaluations that, compared with drugs in an equivalent solution form taken orally, a significant improvement in IBD symptoms was observed after oral administration of drug-loaded FS-ATT microspheres, leading to an increase in the diversity of intestinal microbiota, inhibition of inflammatory cytokines, and enhanced therapeutic effects of berberine. The pH-responsive FS-ATT microspheres could offer a promising drug delivery platform for managing and treating many gastrointestinal diseases.
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高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2023
·
IF 10.9
Yinghao Wu,Jinming Wei,Xiaolu Shi,Wenjie Zhao
In the marine environment, the protective coatings face serious corrosion and biofouling problem, limitations, and challenges that made self-healing coatings unable to perform both anti-corrosion and anti-biofouling dual-function at the same time. Here we constructed the corrosion resistance and anti-biofouling self-healing coating by integrating nano-containers into the coating matrix, the 2-Undecylimidazoline (ULM) acted as a corrosion inhibitor and anti-biofouling dual-functional agent which was loaded on the natural container attapulgite (ATP). To obtain high healing efficiency, a fluidity-driven self-healing silicone oil coating was thickened by fibrous ATP to enhance its stability, which played a key role in the self-healing and long-term corrosion resistance. The self-healing time of ULM@ATP reinforced oil coating was 4 s at least in the air and up to 30 s in the 1 M HCl solution. Meanwhile, the ULM@ATP can significantly enhance the corrosion resistance of the self-healing coating, with the best effect achieved when the content of ULM@ATP was 5 wt.%. The impedance modulus of ULM@ATP-2 still reached 1.62 × 10 8 Ω cm 2 after 480 immersion in 3.5 wt.% NaCl solution, which is 3 orders of magnitude high than pure Oil coating (2.17 × 10 5 Ω cm 2 ). The restructure of the ATP network and the release of ULM could largely inhibit the corrosion of metal. The continuous open circuit potential of the composite coating performed the potentially infinite self-healing capacity. The self-healing performances of the composite coating in strong acid and base solutions exhibited high environmental suitability. This anti-corrosion and anti-biofouling (the surface coverage of adhered chlorella decreased 96.88%) dual-function strategy of self-healing coatings could be also realized by many other porous nano-materials or function modifications. The self-healing performances of the composite coating in strong acid and base solutions exhibited high environmental suitability. This anti-corrosion and anti-biofouling dual-function strategy of self-healing coatings could be also realized by many other porous nano-materials or function modifications. The rapid response self-healing coating possessed anti-biofouling and active self-healing functions and showed wide application under more service environments.
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高影响因子
Desalination and Water Treatment
·
2016
·
IF 1.272
Xudong Zheng,Jiangdong Dai,Jianming Pan
In this work, mesoporous attapulgite (mATP) was firstly prepared in the presence of the cetyltrimethylammonium bromide using attapulgite (ATP) as the matrix materials. Then, it was modified by β-cyclodextrin (β-CD) to obtain the β-cyclodextrin/mesoporous attapulgite composites (β-CD/mATP). The characterization of the composites showed that β-CD/mATP composites remained excellent channel structure and the value of the specific surface area was 300.30 m2/g. As-prepared β-CD/mATP was evaluated as sorbents to adsorption of 2,4,6-trichlorophenol (2,4,6-TCP) and 2,4,5-trichlorophenol (2,4,5-TCP). The results of the batch mode experiment revealed that the Langmuir isotherm model fitted the equilibrium data better, while the kinetic data could be described by pseudo-second-order model perfectly. Furthermore, 2,4,5-TCP adsorption onto β-CD/mATP was more affected than that of 2,4,6-TCP in the presence of competitive phenolic compound. In addition, β-CD/mATP possessed excellent regeneration property.
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高影响因子
SYNTHETIC METALS
·
2009
·
IF 1.962
Chao Yang,Peng Liu
Conductive polypyrrole (PPy) layer was chemically grafted from the self-assembled monolayer (SAM) coated on ATP, resulting in SAM-ATP@PPy composites after attapulgite (ATP) particles were surface modified. The composites possess high electrical conductivity at room temperature, weakly temperature dependence of the conductivity. X-ray diffraction (XRD) analysis confirmed that the main peaks of SAM-ATP@PPy composites are similar to the SAM-ATP particles, which reveal that the crystal structure of SAM-ATP is well-maintained after the coating process under polymerization conditions and exhibit semi-crystalline behavior. Thermogravimetric analysis shows that the thermal stability of SAM-ATP@PPy composites was enhanced and these can be attributed to the retardation effect of amine-functionalized ATP as barriers for the degradation of PPy. The morphology of SAM-ATP@PPy composites showed the fibrillar structure and well-defined corn cob-like morphology.
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高影响因子
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