DESALINATION
·
2025
·
IF 9.8
Yimin Qu,Changliang Lu,Gaofeng Zhang,Zhu Hu,Dajian Huang,Xiaohu Qiang,Yanping Wang
With the escalating global water crisis, solar-driven interfacial evaporation has garnered significant attention as a sustainable desalination technology. However, it still faces challenges such as low evaporation efficiency, salt accumulation, and insufficient durability under real-world conditions. To address these issues, this study used chitosan (CTS) as a matrix to disperse carbon nanotubes (CNTs) with the assistance of palygorskite (Pal). The resulting Pal-CNTs composites were incorporated into the CTS matrix to prepare high-performance aerogels aimed at enhancing solar interfacial evaporation efficiency. The results show that Pal effectively prevents CNT aggregation, enabling uniform dispersion within the CTS matrix and resulting in enhanced light absorption and thermal management. Inspired by the multichannel structure of plant xylem, CTS/Pal/CNTs composite aerogels (CPC) with vertical pores were fabricated using directional freeze-drying. The combination of superhydrophilicity imparted by CTS and Pal, along with the vertical pore structure, allows the CPC to efficiently store and transport water. The CPC can produce up to 13.1 kg m −2 of water per day in outdoor conditions. Moreover, the vertical pore architecture and continuous water supply enable rapid salt diffusion, effectively resisting salt crystallization and maintaining stable performance even in high-salinity brine. The resulting solar evaporator also demonstrates robust mechanical strength and long-term stability, showing great potential for practical freshwater production.
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DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2021
·Vol. 138
·期 36
·50899
·
IF 3.125
Lingli Ni,Shanshan Li,Yongtao Liu,Xiaowu Jiang,Peng Cai,Liangdong Feng,Shizhong Zhang,Xiaoyan Gao
The development of eco-efficient and environmental friendly active anti-corrosion coatings for metallic substrates represents a fundamental milestone in many engineering applications. Herein, a new type of active corrosion protection coating was successfully synthesized simply based on waterborne polyurethane (WPU) and nanocontainer of Ce 3+ modified palygorskite (Ce-PAL). Particularly, the nanocontainer of Ce-PAL was achieved via a facile and green process by cation exchange in water. Inductively coupled plasma atomic emission spectrometry (ICP) revealed that Ce 3+ had successfully incorporated into PAL nanofibers with a loading amount of 10.334 g/kg. The salt immersion test, electrochemical potentiodynamic measurements and electrochemical impedance spectroscopy (EIS) demonstrated that the incorporation of Ce-PAL only with 2 wt% into WPU led to a significant improvement of their corrosion protection properties. Finally, according to the results of scanning electron microscopy with energy dispersive X-ray spectroscopy, the active anti-corrosion mechanism of Ce-PAL/WPU coating was proposed.
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高影响因子
APPLIED CLAY SCIENCE
·
2021
·
IF 5.467
Hengdong Ren,Sheng Wang,Wei Lian,Jialin Ma,Yan Zhao,Yin Liu,Ling Bing Kong,Tian shu Zhang,Won-Chun Oh
Palygorskite (Pal) was used as frameworks to disperse Fe 3 O 4 and polyaniline (PANI) nanoparticles for the preparation of coral-like Pal-dispersed Fe 3 O 4 /PANI composites with improved electromagnetic absorption performance. The processing was a combination of hydrothermal synthesis and simple mechanical stirring. With increasing content of Pal, specific surface area of the Pal-dispersed Fe 3 O 4 /PANI composites was increased from 21.14 m 2 /g to 29.69 m 2 /g, while the composites exhibitd fluffy coral-like structure due to the cation exchange mechanism and rich silanol (Si-OH) group of Pal. Since various loss mechanisms and improved impedance matching , the Pal-dispersed Fe 3 O 4 /PANI displayed an optimal reflection loss of −62.45 dB and a broad effective absorption bandwidth of 5.05 GHz. Therefore, this work develops an inexpensive framework to disperse nanoparticles for electromagnetic absorption materials , while new application of Pal is proposed.
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高影响因子
Journal of the Taiwan Institute of Chemical Engineers
·
2015
·
IF 3
Guangyan Tian,Wenbo Wang,Yuru Kang,Aiqin Wang
Palygorskite (PAL) has been recognized as a potential adsorbent for the removal of various dyes from aqueous solution, and so how to enhance its adsorption capability by an efficient approach becomes the subject of great interests. Herein, natural PAL was modified via a simple one-pot hydrothermal process in the presence of sodium sulphide to enhance the adsorption capabilities. The resultant material was characterized by Fourier transform infrared spectroscopy, X-ray diffraction and field-emission scanning electron microscopy, and the adsorption properties were evaluated using methylene blue (MB) as the model dye to explore the synergetic effect of hydrothermal process and sodium sulphide on the structure, physico-chemical features and adsorption properties. It was found that the PAL rod crystal was partially evolved as new silicate with relatively higher adsorption activity. The adsorption capacity for MB evidently enhanced from 129.71 mg/g to 187.56 mg/g after hydrothermal modification, and the adsorption kinetics can be accurately fitted by a pseudo-second-order model. The chemical adsorption is the main driving force for the adsorption process, and the intensified electrostatic and hydrogen-bonding interaction between MB and PAL and the chemical association of –Si–O – groups with MB molecules plays a key role to enhance the adsorption properties.
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高影响因子
POWDER TECHNOLOGY
·
2021
·
IF 5.134
Sheng Wang,Hengdong Ren,Wei Lian,Ximing Zhang,Zhenying Liu,Yin Liu,Tianshu Zhang,Ling Bing Kong,Hongcun Bai
Palygorskite was coated with a thin layer of carbon by using a hydrothermal process with glucose, in order to form palygorskite/carbon (Pal/C) composites, which were then used as a template to load polyaniline through in-situ polymerization, thus obtaining dispersed spherical shell-shaped palygorskite/carbon/polyaniline (Pal/C/PANI) ternary composites. The Pal/C/PANI composites exhibit promising electromagnetic absorption performances, which can be optimized by adjusting the content of Pal/C. In this case, palygorskite acts as a skeleton and dispersion agent, which effectively prevents the agglomeration of carbon and polyaniline. Due to the improved impedance matching and increased dielectric loss, the Pal/C/PANI composites display an optimal reflection loss of −74 dB at 6.24 GHz, with a maximum effective absorption bandwidth of 4.96 GHz. Such composites could be candidates as high performance microwave absorbers.
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高影响因子
APPLIED CLAY SCIENCE
·
2025
·
IF 5.8
Cuicui Liang,Fei Zha,Xiaohua Tang,Xiaojun Guo,Haifeng Tian,Yue Chang
The misuse of antibiotics leads to the emergence of a variety of drug-resistant bacteria, which poses a serious threat to human life. Novel antimicrobial strategies are urgently needed. Herein, peroxidase-like enzyme material of Cu 2 O/NPC/Pal was prepared from Cu 2 O/nanoporous carbon (Cu 2 O/NPC) derived from Cu-MOF in the presence of palygorskite (Pal) by the pyrolysis-etching-pyrolysis strategy. Cu 2 O/NPC/Pal could catalyze the production of ·O 2 − from H 2 O 2 to cause the oxidative stress and cell membrane damage to bacteria. The antibacterial rates against Staphylococcus aureus and Pseudomonas aeruginosa reached 98.99 % and 92.70 %, respectively. In addition, Cu 2 O/NPC/Pal can promote the oxidation of glutathione and the consumption of intracellular effectively. Introduction of Pal into Cu 2 O/NPC significantly enhances the binding affinity and forms a highly concentrated substrate microenvironment. The study provided the pyrolysis strategy for the synthesis of carbon-based metal oxide nanomaterials in combination with mineral-based materials for the enhancement of peroxide-like activity in antimicrobial application.
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DOI
高影响因子
EUROPEAN POLYMER JOURNAL
·
2021
·
IF 4.598
Junjie Ding,Hong Zhang,Wenbo Wang,Yongfeng Zhu,Qin Wang,Aiqin Wang
A facile, efficient and universal strategy to design and fabricate ultra-high-strength biopolymer-based hydrogels was proposed. By the synergistic effect of palygorskite (Pal) nanorods, sodium alginate/polyacrylamide (SA/PAAm) interpenetrating network and metal ion cross-linking, a strong, tough and stretchable SA/PAAm/Pal composite hydrogel was prepared. The results indicate the tensile stress of SA/PAAm hydrogel was enhanced from 65.62 ± 1.40 to 106.12 ± 6.04 kPa after incorporating 5 wt% Pal nanorod into the SA/PAAm hydrogel. The post-treatment of SA/PAAm/Pal composite hydrogels with ionic crosslinking results in a significant enhancement of mechanical performance. The Fe 3+ -crosslinked hydrogel (SA/PAAm/Pal-Fe) shows the maximum tensile strength of 1022.32 ± 44.46 MPa (higher than other SA/PAAm hydrogels reported), elastic modulus of 481.04 ± 19.03 MPa and compression strength of 2.14 ± 0.11 MPa (only 0.47 ± 0.06 and 0.78 ± 0.05 MPa for SA/PAAm and SA/PAAm/Pal, respectively). The SA/PAAm/Pal-Fe hydrogel (diameter, 6 mm) can lift up weights over 8.45 kg. The high mechanical strength is resulting from the synergy of multiple crosslinked networks, which are favorable to the energy transfer or dissipation of hydrogel during stretching or compression, and thus form stronger and fracture-resistant hydrogel.
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高影响因子
Journal of Cleaner Production
·
2020
·
IF 7.246
Yingying Shi,Zhuan Yan,Yingtao Xu,Tian Tian,Jing Zhang,Jianfeng Pang,Xihua Peng,Qianghua Zhang,Mingli Shao,Wenyi Tan,Hailun Li,Qingping Xiong
Tetracycline hydrochloride (TC) wastewater has complex components, high concentration of organic matter and certain biological toxicity. Photocatalytic degradation is of great application prospect due to its green, thorough and efficient removal of TC. In this study, heterojunction photocatalyst supported on Palygorskite (Pal) AgBr–TiO 2 -Pal with visible light response was successfully prepared via sol-gel and liquid deposition method successfully. Taking TC as the target pollutant, the photocatalytic performance of AgBr–TiO 2 -Pal photocatalys excited by visible light was studied. The spreading/grafting of AgBr–TiO 2 on the surface of Pal was improved by a series of structural characterization and composition analysis. The results also demonstrated that the specific surface area of AgBr–TiO 2 -Pal was about 48.06 m 2 ⋅g −1 with uniform mesoporous slit. The AgBr–TiO 2 -Pal catalyst was very effective for the degradation of TC, and it still retained its high stability and reusability after five cycles. The results showed that under the best reaction conditions (initial concentration of tetracycline 10 mg⋅L −1 , catalyst dosage 0.5 g⋅L −1 , pH value 9), with the excitation of visible light, the maximum removal ratio of TC was 90%, and the mineralization ratio was 67%. The removal efficiency and degradation rate of TC by AgBr–TiO 2 -Pal catalyst were 2.17 and 4.75 times as much as those of TiO 2 respectively. The outstanding photocatalytic performance of heterogeneous AgBr–TiO 2 -Pal catalyst was obtained by fully participate in the reaction by photoinduced charge. This study could be expected to be used in photocatalytic degradation of antibiotic pollutants in wastewater treatment .
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高影响因子
IONICS
·
2023
·Vol. 29
·期 8
·3373-3384
·
IF 2.8
Wan Xiuying,Zhao Mengyuan,Li Fang,Zhu Gan,Zhao Hongyuan
Herein, we reported a novel niclosamide (NA) electrochemical sensor based on the multifunctional nanocomposite of palygorskite (Pal) nanofibers and bifunctional multiwalled carbon nanotubes (BMCN) with graphitization and carboxylation. For the BMCN@Pal nanocomposite, BMCN with one-dimensional nanotube structure possessed excellent electrical conductivity and good dispersion performance due to the graphitization and carboxylation; Pal with fibrous structure possessed good electrocatalytic activity due to the high absorption capability, large specific surface area, and prominent stability. Moreover, BMCN with interconnected carbon conductive network promoted the uniform distribution of Pal nanofibers and compensated for the poor electrical conductivity of Pal nanofibers. Thanks to the functional combination of BMCN and Pal, the BMCN@Pal/GCE sensor exhibited good NA electrochemical detection performance with low limit of detection of 7.88 nM in linear NA concentration of 0.01–10 μM. The BMCN@Pal/GCE sensor exhibited good repeatability and reproducibility. In addition, a good practical feasibility can be achieved at the BMCN@Pal/GCE sensor for the detection of NA in tap water and pond water samples (recovery rate: 96.2–100.3%, relative standard deviation: 2.53–4.97).
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高影响因子
APPLIED CLAY SCIENCE
·
2015
·
IF 2.467
Yingying Shi,Zewei Yang,Bing Wang,Hao An,Zezhi Chen,Hao Cui
A palygorskite (Pal)-supported Cu 2 O–TiO 2 heterojunction composite (Cu 2 O–TiO 2 –Pal) was successfully prepared. The morphology, structure and chemical composition of the composite was characterized, and the adsorption and photocatalytic degradation of tetracycline hydrochloride using this composite was also investigated. The results showed that a layer of TiO 2 − Cu 2 O was successfully loaded on the surface of Pal. The Cu 2 O–TiO 2 –Pal composite had a specific surface area of 93 m 2 ·g − 1 , mesoporous features, and a uniform slit channel. The composite possessed twofold removal ability to TC, including adsorptive capability for the separation and solar-light illuminate photocatalytic in degradation. The maximum adsorption capacity of Cu 2 O–TiO 2 –Pal for TC was 113.6 mg·g − 1 at 20 °C as calculated by the Langmuir model. The pseudo-first-order degradation rate constant of 50 mL of TC with an initial concentration of 30 mg·L − 1 reached 0.0129 min − 1 when the Cu 2 O–TiO 2 –Pal concentration was 1.0 g·L − 1 . The total removal rate of TC reached 88.81% in the presence of Cu 2 O–TiO 2 –Pal. In addition, the composite could be regenerated by calcination at 400 °C and recycled more than three times, which is useful for practical applications.
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高影响因子
RSC Advances
·
2015
·Vol. 5
·期 72
·58107-58115
·
IF 3.84
Wenbo Wang,Zhifang Zhang,Guangyan Tian,Aiqin Wang
The structural evolution of silicate opens a new avenue to cognize its microstructure, intensify its properties and extend its application. Herein, the one-step transformation of palygorskite (PAL) nanorods into smectite nanosheets was successfully achieved under mild hydrothermal condition with no addition of any extra chemicals. The structural evolution of PAL at different reaction stages and the change in physico-chemical characteristics was intensively studied through field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), thermogravimetry (TG) and Fourier transform infrared spectroscopy (FTIR) techniques. The key factors determining the transformation process were clarified. It was found that the moderate mechanical grinding, pH values and the existence of dolomite are essential to realize the transformation, and alkaline condition may facilitate the transformation. The transformation from nanorods to nanosheets is a rebuilding process of crystals, and the c/2 slide of tetrahedrons represents the main transformation mechanism. After the hydrothermal process, the adsorption capability of RPAL for Cu(II) evidently enhanced by 167%, and 99.01% of Cu(II) ions (only 64.9% for raw PAL) can be removed from 20 mg L−1 of Cu(II) solution.
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高影响因子
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
·
2019
·
IF 4.527
Jian-Jun Jiang,Jun-Feng Wang,Ping Yang,Zhi-Min Xu,Tao He,Qiong Gao,Li-Li Wang,Qu-Sheng Li
The application of palygorskite (PAL) for potentially toxic trace elements (Cd 2+ , Ni 2+ , etc.) remediation in polluted soil can substantially reduce the bioavailability and toxicity of these hazard materials. However, the secretion of organic acids and siderophores by microorganisms might result in the re-mobilization of cadmium (Cd) in PAL-bound forms (PAL-Cd). In this study, the interactive effects between Cd stabilized by PAL and mobilized by siderophores from Pseudomonas fluorescens were performed with four flask-shaking experimental treatments, namely, strain with or without an ability of siderophores production respectively associated with or without PAL-Cd. The GC-MS and UHPLC-MS test methods were used to analyze the concentrations of metabolites. Results showed that the Cd mobilized by strain with siderophores production was 22.1% higher than that of strain without the ability of siderophores production ( p < 0.05). The mobilization of Cd in PAL in turn significantly reduced the siderophores production of Pseudomonas fluorescens by 25.1% ( p < 0.05). The numbers of metabolites significantly up-regulated and down-regulated were 9 and 22 in strain groups with PAL-Cd addition compared with the groups without PAL-Cd, respectively. Metabolomics analysis revealed that the mobilized Cd affects the signal transduction pathway and primary metabolic processes, reduces the metabolic capacity of pentose phosphate pathway, glycolysis and tricarboxylic acid cycle pathway. These changes inhibit the ability of strain to biosynthesize amino acids during the mobilization processes, further reducing the capacity of Pseudomonas fluorescens to produce siderophores. This study provides a useful information on how to select soil Cd-stabilizing materials in a targeted manner and how to avoid Cd re-mobilization by siderophores.
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高影响因子
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