ACS Applied Materials & Interfaces
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2021
·
IF 9.229
Yuan-Ming Cao,Mi Zheng,Yi-Fei Li,Wang-Yi Zhai,Guo-Tao Yuan,Min Zheng,Ming-Peng Zhuo,Zuo-Shan Wang,Liang-Sheng Liao
Two-dimensional transition metal dichalcogenides are of particular interest in high-performance photothermal conversion, yet there remains a huge challenge in their practical application in smart textiles for healthcare, energy, and personal protection. Herein, we controllably prepared MoS2 hollow nanospheres with a high photothermal conversion efficiency of 36% via a microemulsion-hydrothermal method, which was further applied to construct photothermal fibers for personal thermal management after a hot-blast dip-drying process. Because of the prominent photothermal effect, the temperature of the photothermal fibers sharply increases from the room temperature value of 25.0 to 55.5 °C in 60 s under near-infrared illumination with a power density of 500 W/cm2. Furthermore, the photothermal fiber pad demonstrated an obvious temperature enhancement of 38.0 °C from a skin temperature of 22.0 °C after it was irradiated by natural sunlight for 60 s. Significantly, the antibacterial elimination rates of the photothermal fibers for Escherichia coli and Staphylococcus aureus are ∼99.9 and ∼99.8%, respectively. This strategy affords an avenue toward the practical application of photothermal materials in smart fibers for personal thermoregulation.
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2021
·Vol. 32
·期 22
·26291-26305
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IF 2.478
Qi Lu,Zhiheng Wang,Yimin Dai,Ling Chen,Chengqian Fang,Shengyun Wang,Yue-fei Zhang,Yan Li,Li Wan
Using a simple dipping method, a novel the magnetically driven hydrophobic polyurethane sponge (MHPS) was synthesized in this work. The isodecyl alcohol with longer carbon chain is grafted onto the sponge surface through substitution reaction and condensation reaction, and Fe 3 O 4 nanoparticles are adhered to the sponge to give it magnetism and make it easy to collect. MHPS were characterized by Fourier transformed infrared, X-ray diffraction, scanning electron microscopy and energy dispersive spectrometers. The maximum adsorption capacity for various oils/organic solvents was 24–50 times its own weight. MHPS shows excellent reusability after ten absorption–extrusion-heating cycles. Moreover, it can selectively absorb and continuously remove oil in a wide range of water due to the combination of its high porosity, hydrophobicity and lipophilicity. The magnetism of MHPS makes it easy to collect with magnets. It is believed that MHPS has potential application prospects in oil purification and oil spill removal industry wastewater.
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ACS Applied Materials & Interfaces
·
2019
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IF 8.456
Baoyi Wu,Yukun Jian,Xiaoxia Le,Han Lin,Shuxin Wei,Wei Lu,Jiawei Zhang,Afang Zhang,Chih-Feng Huang,Tao Chen
Inspired by the high importance of hollow structures in nature such as blood vessels and bamboos in matter transportation, properties enhancement, or even survival of living creatures, the creation of hollow materials remains of considerable interest. However, constructing hollow unique living-like soft and wet polymeric hydrogels with desirable structures and functionalities is still a big challenge. Here, we reported a robust and effective strategy to fabricate complex three-dimensional (3D) hollow polymeric hydrogel with designed shape and function diversity on the basis of supramolecular interactions. By placing a Ca2+ included gelatin core into the solution of alginate, hydrogel shell could be formed along with the shape of the gelatin core via coordination between alginate chains and Ca2+ diffused from gelatin. The hollow hydrogel could finally be obtained by dissolving the gelatin core. Various complex 3D hollow structures could be achieved by designing/constructing assembled gelatin core as a building block with adjustable supramolecular metal coordination position and strength. Moreover, hollow hydrogels with function diversity could be developed by introducing functional polymers or nanoparticles into the hydrogel wall. This work has made important progress in developing hollow polymeric hydrogel with desirable structures, shapes, and various functional applications including soft actuators and chemical reaction containers.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2019
·Vol. 137
·期 2
·48279
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IF 2.188
Yan Song,Fang-Fei Wang,Guan-Xiu Lu,Lin-Yuan Zhou,Qing-Biao Yang
Two kinds of PEI (Polyethyleneimine) nanofibers membrane were successfully prepared by electrospinning and crosslinking technology, which were insoluble in water. One Polyethyleneimine/ Epichlorohydrin/ Polyacrylonitrile nanofibrous films (abbreviated as PEI/ EPI/ PAN NFs) was prepared by in situ crosslinking of PEI/PAN nanofiber containing of EPI, and the other PEI/ PAN/ EPI NFs was prepared by crosslinking PEI/ PAN nanofibers using EPI solution. The composition and morphology of nanofibers before and after crosslinking were investigated by infrared spectroscopy and scanning electron microscopy. PEI/EPI/PAN nanofibers exhibited excellent adsorption properties toward heavy metal ions and methyl orange dyes, which can also be reused multiple times. The adsorption rate of methyl orange remained around 75% after 4 cycles, meanwhile, the adsorption rate of copper and lead still remained around 90% after 5 cycles. In addition, we found that PEI/ PAN/ EPI nanofibers prepared by solution crosslinking technology solved the problem of easy gel formation in in situ crosslinking technology and facilitated the continuous production of PEI/ EPI/ PAN nanofibers, which is better than in situ crosslinking technology. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020 , 137 , 48279.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2019
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IF 4.784
Mengen Yu,Mengjiao Chen,Jiangli Gui,Shudan Huang,Yumeng Liu,Huifei Shentu,Jian He,Zhiyu Fang,Weimin Wang,Yongjun Zhang
In the present study, six different polysaccharides (RFPs, MAPs, UWPs, AEPs, HWPs and CEPs) were extracted from Chlorella vulgaris using repeated freeze–thawing, microwave-assisted-, ultrasonic wave-, alkali-, hot water-, and cellulase-based methods; and antioxidant property assays were performed both in vitro and in vivo . Radical-scavenging capacity (using DPPH, superoxide and hydroxyl radicals) and metal chelating ability were assessed in vitro ; Caenorhabditis elegans was used to assess antioxidant effects in vivo . Based on the in vitro screening tests, UWPs exhibited high antioxidant capacity. The UWP yield was 17.1% ± 2.2%; the DPPH-, superoxide-, and hydroxyl radical-scavenging rates were 65.1% ± 2.4%, 61.2% ± 2.7%, and 56.2% ± 2.2%, respectively, and the metal chelating ability was 63.6% ± 2.5% at a concentration of 0.4 mg/mL. UWPs also exhibited high antioxidant activity in vivo . UWPs significantly increased the lifespan of C. elegans under oxidative stress induced by hydrogen peroxide compared with the control group, enhanced stress-resistance-related enzymes, including catalase and superoxide dismutase by 7.29% ± 1.8% and 24.41% ± 4.8%, respectively. The results of the present study indicate that the extraction methods of C. vulgaris polysaccharides were a key factor influencing antioxidant activity.
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高影响因子
LANGMUIR
·
2019
·
IF 3.683
Yi Xia,Qian Sun,Dan Wang,Xiao-Fei Zeng,Jie-Xin Wang,Jian-Feng Chen
Colloidal nanocrystal clusters (CNCs) are formed by clustering nanocrystals into secondary structures, which represent a new class of materials and have attracted considerable attention, owing to their unique collective properties and novel functionalities achieved from the ensembles in addition to the properties of each individual subunit. Here, we design a simple route to prepare aqueous dispersions of highly stable ZrO2 CNCs with tunable shape and size without modification. ZrO2 CNCs are composed of many ZrO2 nanocrystals each with a size of about 7 nm and possess a mesoporous structure. Both cube-like and star-like shapes of CNCs can be achieved by using different alkaline sources, while the size of CNCs can be adjusted by changing the hydrothermal time. The as-prepared aqueous dispersions of ZrO2 CNCs display an enhanced photocatalytic activity in the degradation of rhodamine B (RhB), compared with ZrO2 nanodispersions. More interestingly, star-like ZrO2 CNCs show better photocatalytic degradation properties than those of cube-like counterparts and even commercial P25. Furthermore, ZrO2 CNCs are easily recycled and can be used for the degradation of a range of dye systems.
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CHEMICAL ENGINEERING JOURNAL
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2019
·
IF 8.355
Xiangyu Zhang,Chao Zhang,Yongqiang Yang,Hongyu zhang,Xiaobo Huang,Ruiqiang Hang,Xiaohong Yao
Bacterial infection is one of the serious problems during wound healing. Antibiotics and traditional antibacterial treatment can produce side effects, such as bacterial resistance, cell toxicity, during the long-term interaction with bacteria. Therefore, developing new antibacterial materials and methods for rapid and safe disinfection in wound healing is important. This work fabricated a hybrid hydrogel incorporated with Ag 3 PO 4 /MoS 2 composites for rapid sterilization during wound healing. This hydrogel exhibited a superior antibacterial activity within 5 min by co-irradiation of 660 nm visible light (VL) and 808 nm near infrared (NIR) light due to the synergistic effects of both photodynamic antibacterial and photothermal antibacterial treatments. In addition, the antibacterial hydrogel could promote the wound healing compared with the pure hydrogel and medical gauze (MG) and cause no noticeable organ abnormalities in rats during the wound healing process.
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Journal of Materials Chemistry A
·
2019
·Vol. 7
·期 37
·21386-21403
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IF 10.733
Xin Song,Jiangle An,Chao He,Jukai Zhou,Yuanting Xu,Haifeng Ji,Li Yang,Jiarui Yin,Weifeng Zhao,Changsheng Zhao
Super adsorbents with ultrahigh adsorption capabilities are highly desired for efficient wastewater remediation. However, most of the adsorbents with high adsorption capabilities are powdery adsorbents, showing inescapable limitations in practical adsorption column application. It is practically urgent to develop a simple and effective method for preparing adsorbents with ultrahigh adsorption capability and convenient column operation ability. Herein, inspired by oviparity, we fabricate super-adsorbent hydrogel spheres (SAHSs) based on self-sacrificing micro-reactors, which achieve the interior cross-linking polymerization of the hydrogel network and subsequent self-disintegration within only 150 seconds. The as-prepared poly(2-acrylamido-2-methyl-propanesulfonic acid-co-acrylic acid) hydrogel spheres show outstanding adsorption capabilities toward organic dyes (4625 ± 231 mg g−1 for methylene blue) and heavy metallic ions (4312 ± 185 mg g−1 for Pb(II)). Remarkably, the adsorption column packed with the SAHSs exhibits splendid removal abilities for organic dyes, which can purify 6280 mL of dye-containing wastewater (150 μmol L−1) thoroughly using only 7 mL SAHSs. This is the first time that a maximum dynamic removal capacity over 50 g L−1 spheres has been obtained using an adsorption column. In addition, the hydrogel spheres also show good recyclability, dynamic filtration–regeneration, selective adsorption and smart separation–regeneration. Thus, the oviparity-inspired method to fabricate super-adsorbent hydrogel spheres has great potential to be used in efficient, economical and environmental wastewater treatment.
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NANOTECHNOLOGY
·
2019
·Vol. 30
·期 32
·325101
·
IF 3.399
Miaomiao Zhang,Lulu Zhao,Fengting Du,Yunchao Wu,Rong Cai,Lixia Xu,Hongrui Jin,Shengqiang Zou,Aihua Gong,Fengyi Du
Excessive reactive oxygen species (ROS) can lead to irreversible damage to the human body in vivo, therefore it is highly desirable to exploit an efficient antioxidant. Recently, cerium oxide nanoparticles have attracted extensive attention in the field of biomedicine due to their excellent antioxidant properties. In this study, cerium-doped carbon quantum dots (Ce-doped CQDs) with hydroxyl radical scavenging capacity were synthesized for first time by one-step hydrothermal carbonization method. The resultant Ce-doped CQDs with the average particle size of 2.5 nm possessed the properties of good water solubility, colloid stability, and strong fluorescence, which are similar to traditional CQDs. Meanwhile, the Ce-doped CQDs had good biocompatibility and negligible cytotoxicity. Taking advantage of inherent ultra-small size, the Ce-doped CQDs exhibited a high Ce3+/Ce4+ ratio at the surface of particles. The radical scavenging capability of the Ce-doped CQDs was proved by a simple photometric system in vitro, which provided direct evidence for its antioxidant potency. Furthermore, the Ce-doped CQDs had a high ability to protect cells from hydrogen peroxide-induced damage by scavenging hydroxyl radicals. These results suggest that Ce-doped CQDs as a new ROS scavenger may provide potential prospects for the treatment of oxidative stress-related diseases.
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高影响因子
CARBOHYDRATE POLYMERS
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2018
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IF 5.158
Yiheng Song,Jisuan Tan,Guan Wang,Li Zhou
Herein, we demonstrated the potential of peach gum polysaccharide-based amine-rich gel (ARG) as an efficient adsorbent for removal of anionic dyes from water. The adsorption performance of ARG was systematically studied by choosing methyl orange (MO) and amaranth (ART) as representative anionic dyes. The effects of various parameters such as pH, ionic strength, temperature, initial dye concentration and contact time on the adsorption were investigated. The ARG exhibited superior adsorption selectivity and stable adsorption behaviors against variation of pH and ionic strength for anionic dyes. Adsorption process reached equilibrium within 10 min and showed good correlation with pseudo-second-order kinetic model and Langmuir isotherm. The adsorption capacity of ARG for MO and ART can reach 1949.5 and 1082.2 mg g −1 , respectively. Based on its sustainable characteristic, low cost and excellent adsorption property, the ARG holds great promise for utilizing as an adsorbent for practical water treatment applications.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2018
·
IF 3.141
Ran Wei,Wanying Song,Fan Yang,Jukai Zhou,Man Zhang,Xiang Zhang,Weifeng Zhao,Changsheng Zhao
Solution pH is an important factor in the adsorptive behavior of ionizable dyes in the chemical and biotechnology industries. In this study, novel pH-responsive zwitterionic hydrogels were prepared by the copolymerization of acrylic acid and methylacryloyloxyethyl trimethylammonium chloride. The results indicated that the hydrogels showed bidirectionally pH-responsive behaviors: the swelling ratio was small in neutral pH value and increased with the increase or decrease of pH values. Meanwhile, the selective adsorption capacities of the hydrogels for anionic or cationic dyes could be controlled by adjusting the pH values. The hydrogels might be applied in many fields, such as adsorption and separation and water treatment.
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高影响因子
ACS Applied Nano Materials
·
2018
·
IF 0
Lili Yang,Yusi Peng,Yong Yang,Jianjun Liu,Zhiyuan Li,Yunfeng Ma,Zhang Zhang,Yuquan Wei,Shuai Li,Zhengren Huang,Nguyen Viet Long
Hydrogenation was discovered to be an effective method to improve the surfaced-enhanced Raman scattering (SERS) performance of semiconductor TiO2 and enhance its enhancement factor (EF) by at least 3 orders of magnitude. The TiO2 substrate hydrogenated for 3 h showed the most remarkable SERS activity with a detection limit of 1 × 10–7 M for R6G and an EF of 1.20 × 106, which can be comparable to the Ag substrate. The remarkable SERS activities can be attributed to the chemical enhancement mechanism dominated by the enhanced photoinduced charge transfer (PICT) process between R6G and the oxygen vacancy-containing partly amorphous black TiO2 NWs substrate, as well as the electromagnetic enhancement (EM) derived from the metal-like local surface plasma resonance (LSPR) of the hydrogenated randomly oriented TiO2 nanowires. The first principle based on the density functional theory has been applied to demonstrate the appearance of tailed electron energy state produced by hydrogenation and provide the reasonable explanation for an easier PICT process, a stronger light absorption, and the enhanced SERS performance of our hydrogenated TiO2 substrates. Another impressive fact was that the photodegradation capability of TiO2 was also evidently improved. After 14 cycles of detection-and-degradation of R6G molecules, the substrates can still maintain regenerative and remarkable SERS activity. Ultrasensitive SERS activity and self-cleaning performance were successfully integrated on the black TiO2 NWs substrate by hydrogenation. Moreover, our substrate exhibited the excellent signal reproducibility and the outstanding stability of antioxidation in atmosphere thanks to the protection of the surface amorphous layer.
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