INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
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.
✓ 已验证
DOI
高影响因子
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
·
2024
·
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.
✓ 已验证
DOI
高影响因子
Catalysts
·
2026
·Vol. 16
·期 8
·687
·
IF 4.5
Sadiq Ali,Saeed Ahmed,Huiyu Li,Yongjun Feng
A nickel oxide/attapulgite (A-ATP/NiO) nanocomposite was synthesized and evaluated for the adsorption and Fenton-like degradation of Rhodamine B (Rh-B) in an aqueous solution. The composite was characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), and Brunauer-Emmett-Teller (BET), confirming the successful immobilization of NiO nanoparticles into the attapulgite framework. The attapulgite modification results in enhanced surface properties, including increased surface area (from 68.9 to 111.3 m2g−1), pore volume, and the availability of active sites. Batch experiments demonstrated a high affinity of A-ATP/NiO toward Rh-B, achieving 52% adsorption within 60 min. Upon addition of Fenton reagent (H2O2), the composite exhibited excellent catalytic performance, achieving 97% Rh-B degradation in 10 min and almost complete removal (99.39%) within 60 min under optimized conditions (pH 3, 303 K, H2O25 mmol L−1, catalyst dose 0.03 g L−1, dye concentration 50 ppm). The synergistic combination of adsorption and catalytic oxidation significantly enhanced dye removal, with reactive hydroxyl radicals (•OH) driving the degradation process. Kinetic analysis indicated that the removal followed a pseudo-first-order model, suggesting that physisorption and surface diffusion are the primary mechanisms for Rh-B degradation. These findings highlight A-ATP/NiO as a low-cost, environmentally friendly, and highly efficient material for the rapid and sustainable remediation of Rh-B-contaminated wastewater.
✓ 已验证
产品关联
DOI
高影响因子
Lubrication Science
·
2022
·Vol. 34
·期 3
·210-223
·
IF 1.307
Xiang Rao,Chenxing Sheng,Zhiwei Guo,Xuecheng Zhang,Huabing Yin,Chang Xu,Chengqing Yuan
The performances of diesel cylinder liner-piston ring (CLPR) that works under harsh conditions are very important and affect the service life, reliability and economy of engines. This study aimed to gain insights into the anti-friction and self-repairing properties of lubricating oil with different silicate-based additives for marine diesel CLPR, and expect to find the types and concentrations of additives that are most appropriate for CLPR. Three kinds of silicates, including ultrafine serpentine, attapulgite and kaolin powders, were prepared and modified, and added to the lubricants with different concentrations. The tribological behaviours and worn surface features of the friction pairs were investigated after friction tests. Compared with original oil, it is found that all additives process anti-friction and self-repairing properties at appropriate concentration, and the ultrafine attapulgite powders additive presents the best performance. These findings will aid in understanding the anti-friction and self-repairing abilities of silicate-based additives to diesel CLPR, as well as its potential application to solve the wear failures of CLPR online.
✓ 已验证
DOI
高影响因子
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
·
2023
·
IF 15.9
Xiang Rao,Chenxing Sheng,Zhiwei Guo,Leyang Dai,Chengqing Yuan
The cylinder liner-piston ring (CL-PR) that worked under harsh conditions is extremely susceptible to wear, and its friction loss is the primary source of mechanical loss of engines, affecting its equipment reliability and energy consumption. Recently, the use of low sulfur fuel oils (LSFO) aggravated the wear of the CL-PR, further increasing friction loss . Furthermore, the emissions of diesel engines also affect the environment and human health. In this study, the graphene-attapulgite (G-ATP) additive was prepared and applied to engines in response to these challenges. The prepared G-ATP additive was dispersed into 5040 lubricating oil with a 0.25 wt% concentration, then the effects of the additive on engines were investigated under hot test conditions with a speed of 1750 rpm. It was found that the G-ATP additive displayed excellent tribological properties, the wear mass loss of the piston ring was reduced by 64.5% with the addition of the G-ATP additive, and the wear of the cylinder liner was significantly reduced. Meanwhile, owing to the excellent tribological properties and thermal conductivity of the G-ATP additive, the HC and NOx emissions of the engine were reduced by 3.0% and 6.1%, respectively. Additionally, the vibration performances of the engine were improved by 42.1% in the final stage. These findings revealed the potential mechanism of the G-ATP additive for performance enhancements of diesel engines , as well as the relationships between the emission and vibration of engines and tribological properties of CL-PRs, which promote the energy saving and emission reduction of engines.
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2021
·Vol. 413
·期 7
·1871-1882
·
IF 4.157
Dong Lubei,Chen Yihui,Chen Shubing,Hou Chunyan,Wang Shangyou,Xuan Rongrong,Fang Keyi,Wang Tingting,Zhang Lihua,Zhang Yukui
In this study, a novel method which involved in-tube solid-phase microextraction (SPME) using an attapulgite (ATP) nanoparticles–based hydrophobic monolithic column was successfully developed. It was coupled with high-performance liquid chromatography-ultraviolet detection for the determination of three phosphodiesterase-5 (PDE-5) inhibitors, including thiosildenafil, pseudovardenafil, and norneosildenafil, in functional foods. The monolithic column was prepared by one-step polymerization, using 3-trimethoxysilylpropyl methacrylate–modified ATP nanoparticles and 1-butyl-3-vinylimidazolium bromide (VBIMBr) as the functional monomers, and ethylene glycol dimethacrylate (EDMA) as the cross-linker. The obtained poly(ATP-VBIMBr-EDMA) monolith was characterized by scanning electron microscopy equipped with energy-dispersive analysis of X-ray, Fourier transform infrared spectroscopy, thermogravimetric analysis, and X-ray diffraction. The adsorption capacity, up to 2.00 μg/cm calculated by the Langmuir isotherm model, was about six times that of the poly(VBIMBr-EDMA) monolith. Crucial factors affecting the extraction efficiency, including sample solvent, elution solvent, flow rates of sampling loading and elution, sample loading volume, and elution volume, were investigated in details. Under the optimal in-tube SPME conditions, the proposed method showed good reproducibility with run-to-run, column-to-column, and batch-to-batch relative standard deviations less than 7.2%, and low limits of detection of 0.5–0.9 ng/mL in real samples. Thiosildenafil was detected in four types of functional foods with the contents of 1.30–4.78 μg/g. This newly proposed in-tube SPME method based on poly(ATP-VBIMBr-EDMA) monolith may provide a simple, efficient, and promising alternative to daily monitoring of PDE-5 inhibitors in functional foods. Graphical abstract
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Catalysts
·
2020
·Vol. 10
·期 2
·189
·
IF 3.52
Ting Zhang,Chunyuan Qian,Pengran Guo,Shuchai Gan,Lingyu Dong,Ge Bai,Qiyang Guo
Ciprofloxacin, a third-generation fluoroquinolones (FQs) antibiotic, is observed to increasingly pollute the environment. In this study, a three-dimensional reduced graphene oxide-attapulgite-based catalyst Fe2O3/RGO-ATP was prepared and used to analyze the degradation of ciprofloxacin in a heterogeneous Fenton reaction. The heterogeneous catalyst Fe2O3/RGO-ATP was prepared by a one-step hydrothermal method, and the samples were characterized using BET(Brunauer-Emmett-Teller) surface area, Raman spectroscopy, X-ray diffraction (XRD), Fourier infrared (FTIR) spectroscopy, scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The effect of reaction time, temperature, pH, initial concentration, H2O2dosage and reuse time on the degradation of ciprofloxacin by the catalyst Fe2O3/RGO-ATP was investigated. The optimum conditions of degradation of ciprofloxacin are observed to be 60 °C, pH 5, H2O2concentration of 2.9724 mmol/L, and initial ciprofloxacin concentration of 50 mg/L. The catalyst could be reused several times with a decline in catalytic capacity. Fourier-transform ion cyclotron resonance mass spectrometer (FT) was also employed to study the degradation products of ciprofloxacin in the aqueous solution. The results show that the heterogeneous catalyst Fe2O3/RGO-ATP possessed an excellent ability for the catalytic degradation of ciprofloxacin. Direct hydroxyl oxidation is noted to be the main pathway of degradation of ciprofloxacin, and no defluorination reaction is observed during the degradation process.Keywords:graphene;ciprofloxacin;catalytic degradation;hydroxyl oxidation
✓ 已验证
产品关联
DOI
高影响因子
Materials
·
2024
·Vol. 17
·期 11
·2615
·
IF 3.1
Naveed Karim,Tin Kyawoo,Chao Jiang,Saeed Ahmed,Weiliang Tian,Huiyu Li,Yongjun Feng
The continuous discharge of organic dyes into freshwater resources poses a long-term hazard to aquatic life. The advanced oxidation Fenton process is a combo of adsorption and degradation of pollutants to detoxify toxic effluents, such as anti-bacterial drugs, antibiotics, and organic dyes. In this work, an activated attapulgite clay-loaded iron-oxide (A-ATP@Fe3O4) was produced using a two-step reaction, in which attapulgite serves as an enrichment matrix and Fe3O4functions as the active degrading component. The maximum adsorption capacity (qt) was determined by assessing the effect of temperature, pH H2O2, and adsorbent. The results showed that the A-ATP@Fe3O4achieves the highest removal rate of 99.6% under optimum conditions: 40 °C, pH = 3, H2O225 mM, and 0.1 g dosage of the composite. The dye removal procedure achieved adsorption and degradation equilibrium in 120 and 30 min, respectively, by following the same processes as the advanced oxidation approach. Catalytic activity, kinetics, and specified surface characteristics suggest that A-ATP@Fe3O4is one of the most promising candidates for advanced oxidation-enrooted removal of organic dyes.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2024
·
IF 10.7
Xinchen Du,Xingli Zhao,Yadong Liu,Yafang Chen,Ruxiang Li,Tongxing Zhang,Lianyong Wang
The development of self-elastic sponges with enhanced hemostatic and antibacterial properties to treat noncompressible hemorrhage and facilitate wound healing remains challenging. Herein, we prepared a chitosan sponge reinforced with lauric acid-modified quaternized chitosan (LQC) and attapulgite, features a porous structure, high self-elasticity, and rapid shape recovery. The incorporation of LQC conferred the sponge with an enhanced capacity to promote the adhesion, aggregation, and activation of blood cells, and resistance to infection by Staphylococcus aureus , Escherichia coli , and Methicillin-resistant Staphylococcus aureus ; the incorporation of attapulgite enhanced the hydrophilicity and mechanical strength of the sponge, and its ability to activate the intrinsic and extrinsic coagulation pathways. The sponge exhibited superior hemostatic capacity to commercial gauze and gelatin sponge when applied to rat and rabbit liver perforation wounds. Additionally, the wound healing efficacy of our biocompatible and biosafe sponge was higher than that of commercial 3 M Tegaderm dressing. Our sponge exhibits significant potential in noncompressible hemorrhage treatment, bacterial infection prevention, and wound healing promotion.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COMPOSITE INTERFACES
·
2021
·
IF 2.952
Haicun Yang,Zinan Cai,Runfei Li,Wenzhong Ma,Zheng cao,Fanghong Gong,Guoliang Tao,Chunlin Liu
In this work, the thiolized attapulgite (ATP-MTS) particles were prepared by the dealcoholation between hydroxyl and γ-mercaptopropyltrimethoxysilane (MTS). Then, based on the ‘grafting from’ mechanism, the surface-initiated graft polymerization was carried out to give ATP grafted with polymethyl methacrylate hybrid particles (ATP@PMMA). The grafting process was characterized in detail by FTIR, TGA, XRD, XPS, TEM and elemental analysis. The effects of the main polymerization conditions on the grafting ratio were investigated in detail. Finally, polycarbonate (PC) was modified with ATP@PMMA to investigate the effects of hybrid particles on the processability of nanocomposites. The results showed that ATP@PMMA particles with a maximum graft ratio of 23.3% were prepared successfully within 5 h. The optimum polymerization temperature was 60°C, and the ratio of MMA/SH/AIBN was 500/2/1. The surface tailoring improved the dispersion of ATP@PMMA in the matrix. Compared with the pristine PC, the incorporation of ATP@PMMA enhanced the melt flow index (MFI), while reduced the glass transition temperature (Tg) and complex viscosity of nanocomposites.
✓ 已验证
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2026
·
IF 10.6
Tingting Yuan,Shiyun Yang,Anlong Hu,Jianghu Cui
The antagonistic environmental geochemical behaviors of cadmium (Cd) and arsenic (As) present a critical challenge for the simultaneous remediation of contaminated paddy soils. Here, we report the synthesis of attapulgite-supported nanoscale zero-valent iron (ATP-nZVI), and its remediation performance was systematically investigated. Batch adsorption kinetics studies showed that ATP-nZVI material exhibits superior adsorption capacity performance for Cd and As compared with its individual components. Importantly, the pot experiment demonstrated that ATP-nZVI application significantly increased soil pH and iron content, while concurrently enriching the soil microbiome, especially iron- and arsenic-reducing bacteria. This synergistic Fe-microbe interaction stimulated iron cycling, effectively reducing the bioavailability of Cd and As and promoting the formation of iron plaques in rice roots. Consequently, ATP-nZVI treatment decreased Cd and As accumulation in rice grains by 86.49% and 19.15%, respectively, while enhancing grain yield and essential micronutrient profiles (Zn, Mn, Cu, Fe and Mg). This work offers a cost-effective, eco-friendly and sustainable remediation strategy for the integrated management of multi-heavy metal contaminated agricultural soils.
✓ 已验证
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2018
·
IF 4.439
Shujun Zhao,Yingying Wen,Zhong Wang,Haijiao Kang,Jianzhang Li,Shifeng Zhang,Yong Ji
Nanophase modification is an effective path to improve composite properties, however, it remains a great challenge to increase the mechanical strength of the modified materials without sacrificing elongation and toughness. This study presents a novel and efficient design for interface anchoring of a waterborne polyurethane (WPU) elastomer with attapulgite (ATP) triggered by poly(dopamine) (PDA) formation due to self-polymerization of the dopamine moieties. The WPU-PDA-ATP (WDA) rod-like elastomer served as an active enhancer for a soy protein isolate (SPI)-based composite to facilitate multiple interactions between SPI and the elastomer. As expected, the PDA layer was coated onto ATP, inducing the nanofiller to successfully anchor onto the WPU elastomer, as confirmed by solid-state 13 C NMR, XPS, and ATR-FTIR results. Compared with the control SPI-based film, the tensile strength and toughness increased by 145.6% and 118.3% respectively by introducing WDA rod-like elastomer. The water resistance and thermal stability of the prepared SPI composites were also favorable. The proposed approach represents an efficient way to utilize high-performance elastomer in biobased materials to concurrently enhance strength and toughness.
研究领域:
材料科学
·
高分子科学
·
纳米复合材料
·
生物基材料
·
复合材料增强
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）