COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2018
·
IF 2.829
Rui Zhang,Youfeng Cai,Xuyang Zhu,Qiong Han,Tongqing Zhang,Yi Liu,Yu Li,Ailian Wang
In this study, a reduced graphene oxide/silver phosphate (RGO/Ag 3 PO 4 ) was obtained via polydopamine (PDA) modification, and the PDA/RGO/Ag 3 PO 4 composite was coated on the pure polyvinylidene fluoride (PVDF) membrane, which named PDA/RGO/Ag 3 PO 4 /PVDF memebrane. The PDA/RGO/Ag 3 PO 4 was characterized by Fourier transform infrared (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Futhermore, the SEM, Energy dispersive spectrometer (EDS) spectrograms and Atomic force microscopy (AFM) were used to characterize the morphology structure, elemental mapping and roughness of PDA/RGO/Ag 3 PO 4 /PVDF memebrane. The results showed that the composite membrane has a good effect on the degradation of dyes, and the rejection rate of MB reached 99% with an increasing of the composite material ratio. The hydrophilicity of the membrane surface increased by measuring the contact angle, with decrease to 59.2°compared with 88.2°of pure PVDF membrane. In addition, under the visible light irrradiation, the coated membrane still keeps stable flux and high separation efficiency after 5 cycles. Hence, this study provides an attractive PVDF modified membrane.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
·
2019
·
IF 2.606
Mengzhu Kong,Yaling Huang,Ruilin Yu,Juqun Xi
Multistimuli-responsive vehicles that deliver drugs in temporal-, spatial- and dosage-controlled manners have developed as a potential platform in tumor therapy. However, how to integrate these functions in one single carrier effectively still presents a lot of challenge. Here, we developed a strategy to construct a photothermal and pH responsive platform based on Zn 2+ coordination with doxorubicin (DOX) and polydopamine (PDA) on the surface of magnetic nanoparticles (Fe 3 O 4 @PDA-Zn 2+ -DOX NPs). In this architecture, Fe 3 O 4 @PDA nanoparticles triggered photothermal effects for tumor hyperthermia, and Zn 2+ coordinated DOX was released in responding to the thermal effect to achieve chemotherapy simultaneously. Moreover, DOX release was further promoted at acidic environment due to the pH sensitivity of Zn 2+ coordination. Therefore, our system possesses multiple effects in tumor treatment: photothermal therapy with near infrared lighting (NIR), thermosensitive DOX release for chemotherapy, and pH-responsive DOX release to enhance deeper therapy in tumor acidic microenvironment. Our in vivo results provide the evidence that Fe 3 O 4 @PDA-Zn 2+ -DOX NPs upon laser exposure have effective anti-tumor therapeutic activity, indicating this platform is suitable for enhanced chemo-photothermal synergistic tumor therapy.
研究领域:
肿瘤学
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纳米医学
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药物递送系统
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产品关联
DOI
高影响因子
CELLULOSE
·
2021
·Vol. 29
·期 2
·1175-1187
·
IF 5.044
Cheng Wei,Liu Wenjing,Wang Qiang,Wang Ping,Zhou Man,Yu Yuanyuan
Antibacterial textiles cannot prevent the dirty liquid containing bacteria from passing through the fabrics to reach the human skin, and cannot effectively protect human health. To enhance the antibacterial function of the fabric, a dual-function cotton fabric with hydrophobic and antibacterial properties, cotton@PDA@AgNPs@ODA, was prepared via in situ surface assembly of polydopamine (PDA), Ag nanoparticles (AgNPs) and octadecylamine (ODA). Polydopamine (PDA) was deposited on raw cotton fabric. AgNPs were introduced to the surface PDA coating of the fabric by in situ reduction of AgNO 3 with reducibility of catechol moieties in PDA. Subsequently, octadecylamine (ODA) was grafted onto PDA by Michael addition/Schiff base reaction. Water contact angle of Cotton@PDA@AgNPs@ODA was 130° at 10 min of drop contact time, showing good hydrophobicity. The antibacterial rates of Cotton@PDA@AgNPs@ODA against Escherichia coli and Staphylococcus aureus were above 99%, and the modified fabric had good bacterial liquid shielding function. Furthermore, the PDA/AgNPs/ODA coating had good fastness under washing, mechanical abrasion and strong acid/alkaline conditions.
研究领域:
纺织材料科学
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生物医学工程
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产品关联
DOI
高影响因子
CATALYSIS LETTERS
·
2022
·Vol. 153
·期 4
·965-977
·
IF 2.936
Zhang Tong,Zhao HuaHua,Yang Jian,Zhao Jun,Yan Liang,Chou Lingjun,Song Huanling
Selective hydrogenation of crotonaldehyde to crotyl alcohol over PDA (polydopamine) modified Co 3 O 4 supported Pt catalysts was investigated in liquid phase. The catalysts which contain PDA and Co 3 O 4 lead to the formation of two kinds of interfaces: Pt-PDA and Pt-Co 3 O 4 , which greatly improves the performance in the hydrogenation of crotonaldehyde. TEM results reveal that the Pt nanoparticles of Pt/Co 3 O 4 @PDA have a smaller size and better dispersion than Pt/Co 3 O 4 . XPS, FT-IR and CO-DRIFTs results indicate that the addition of PDA decreases the electron density of Pt which is favor to the hydrogenation of C=O in crotonaldehyde. The characterization results demonstrate that the interaction between Pt and PDA creates new active interfacial sites and the synergy of Pt-PDA and Pt-Co 3 O 4 is responsible for the excellent performance. Graphical Abstract
研究领域:
催化化学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2023
·
IF 3.9
Manting Wang,Rongrong Fan,Qingjian Yu,Jie-Xin Wang,Yuan Le,Jian-Feng Chen
Controlled pesticide delivery systems offer many distinctive advantages over conventional pesticide formulations. In this work, degradable poly(N-isopropylacrylamide) (PNIPAM)–tannic acid (TA) microgels and multifunctional PDA@PNIPAM-TA nanocomposites were prepared in a high-gravity rotating packed bed reactor (RPB) for smart pesticide delivery and release. The as-prepared microgels and nanocomposites showed reversible temperature-dependent swelling/deswelling behavior and irreversible pH-induced degradation. A dynamic contact angle test suggested that the introduction of TA and PDA into the PNIPAM matrix could enhance foliar adhesion and deposition efficiency. The nanocomposites were further used for the encapsulation and delivery of imidacloprid (IMI) to protect it from rapid photolysis and improve its pest-control efficiency. Their thermoresponsive behavior as well as pesticide loading capacity could be tuned by tailoring the PNIPAM-TA shell thickness, which could be varied by the NIPAM amount. The release rate of IMI from the core/shell nanocomposites was positively correlated with environmental temperature and near-infrared (NIR) light, which was adaptive to the positive temperature-dependent toxicity correlation of IMI and the increasing trend of pests under high temperature. The cumulative release of IMI was 23.5% at 25 °C, while it was 81.2% at 40 °C after 24 h of incubation, and the release rate was greatly enhanced under NIR irradiation. The results indicated that the facile control of pesticide release could be realized by regulating environmental conditions. This work also provides an idea for using high-gravity technology to conveniently construct a smart, effective, and environmentally friendly pesticide delivery system for sustainable crop protection.
研究领域:
材料科学
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化学工程
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农业科学
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纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Kezhu Xu,Jin Wu,Qunling Fang,Linfeng Bai,Jinyu Duan,Jiaxing Li,Huajian Xu,Ailing Hui,Lingyun Hao,Shouhu Xuan
The organic pollutants and heavy metal ions are critical harmful substances in waste water because they destroy the ecological systems and lead diseases to animals and human beings. Unfortunately, the simultaneously remove of them in one system is still a challenge due to their different treating mechanism. Herein, a novel magnetic h-Fe 3 O 4 @Au/Polydopamine (Au/PDA) hybrid hollow nanosphere which can both absorb the potentially toxic U(VI) ions and catalyze the reduction of the 4-nitrophenol is reported. By using a simple in situ redox-oxidizing polymerization method, the h-Fe 3 O 4 hollow nanosphere is well encapsulated by the Au/PDA hybrid shell to form the dual-functional magnetic hollow nanocomposites. Owing to the hollow interior, uniform and functional PDA coating, and high active Au nanocrystals, the final h-Fe 3 O 4 @Au/PDA hollow nanosphere possesses high potential in nanocatalysis, heavy metal ions adsorption, and drug delivery. Because of the PDA protection, the h-Fe 3 O 4 @Au/PDA nanosphere can even keep 90% activity after 7 cycling catalytic reactions on reduction of 4-nitrophenol. Similarly, the h-Fe 3 O 4 @Au/PDA exhibits a good adsorption effect for U(VI) in nuclear waste and its adsorption capability reaches to 82.9 mg·g −1 by 6 successive adsorption–desorption experiments. Due to the facile magnetic separation, the h-Fe 3 O 4 @Au/PDA nanosphere can be easily collected by applying an external magnetic field. In summary, such a multifunctional recyclable h-Fe 3 O 4 @Au/PDA nanosphere with green and facile synthesis, easy manipulation, efficient adsorption performance and good catalytic activity possesses broad application potential in treatment of coexisting toxic water pollution.
研究领域:
环境科学
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材料科学
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化学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Jiayao Wang,Jingguo Li,Shaokui Cao,Yingliang Liu,Jun Shi
In recent years, the remotely multi-responsive chitosan (CS) hydrogel has been garnering extensive attention owing to its remarkable potential in biomedical applications. Meanwhile, it presents a wide range of uses in the realm of controlled drug delivery and photothermal chemical combination therapy. In this paper, the CS/β-glycerophosphate disodium salt (β-GP) physical crosslinked network was employed as the framework to encapsulate near-infrared (NIR) responsive hollow copper sulfide (CuS)/polydopamine (PDA) nanoparticles, and the NIR/pH synergistic responsive CS/CuS/PDA hydrogel was fabricated. The negatively charged β-GP, along with the hollow CuS/PDA nanoparticles, played a key role in promoting the creation of abundant electronegative cavities. As a result, the hybrid hydrogel achieved an impressively high DOX loading rate, reaching up to 95.5%. The CS/CuS/PDA hydrogel exhibits excellent pH responsiveness, which could be attributed to the disintegration of the CS/β-GP network under acidic buffer solution. In addition, hollow CuS/PDA nanoparticles embedded in the hydrogel endow the hydrogel with excellent NIR photothermal responsiveness, which significantly promotes the release of DOX. Consequently, the CS/CuS/PDA hydrogel reveals excellent synergistically enhanced NIR, pH, and thermal triple-responsiveness, indicating its tremendous promise in the field of controlled drug release.
研究领域:
生物医学工程
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材料科学
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药学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Guangjin Yu,Jing Wang,Qingshan Xiong,Yunqi Xu,Shouhu Xuan,Ken Cham-Fai Leung,Qunling Fang
With the prevalence of drug-resistant bacteria and the waning effects of antibiotics, nanoplatform has become an effective strategy for fighting infections. This work reports a dipolar-hollowed α-Fe 2 O 3 @Au/Polydopamine (PDA) nanospindle which possesses both photothermal-photodynamic (PTT-PDT) coupling antibacterial and drug carrying performance. Firstly, the spindle type α-Fe 2 O 3 @Au/PDA particle was prepared by a simple one-step strategy and then the dipolar-hollow structure was obtained by controlling etching the inside α-Fe 2 O 3 core with hydrochloric acid. After further loading the photosensitizer zinc phthalocyanine (ZnPc), the dipolar-hollowed α-Fe 2 O 3 @Au/PDA-ZnPc nanospindles were obtained. Owing to the dipolar-hollowed interior, the nanospindles are also effective in carrying antitumor drug doxorubicin (DOX) and shows a good drug loading-release behavior. The dipolar-hollowed α-Fe 2 O 3 @Au/PDA nanospindles exhibits a high antibacterial performance against Escherichia coli ( E. coli ) and Staphylococcus aureus ( S. aureus ) under near-infrared (NIR) and Xenon lamp irradiation. When α-Fe 2 O 3 @Au/PDA-ZnPc nanospindles concentration was increased to 100 μg/mL, the antibacterial rate was close to 100 %. In comparison to the original α-Fe 2 O 3 @Au/PDA nanospindles, the product achieved a lower effective antibacterial temperature. This triple-mode therapy (PTT/PDT/Drug) provides an interesting design idea for anisotropic therapeutic nanoplatform which can be applied in low-temperature antibacterial and drug delivery.
研究领域:
纳米医学
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生物材料学
·
抗菌研究
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Jie-Yao Lyu,Jia-Hao Yu,De-Yun Tang,Wei He,Bo-Wen Tao,Xiang Guo,Qi-Long Yan
In this paper, micro-spherical Al@PDA@RDX composites with fine interfacial control have been fabricated by spray-drying technique, where poly-dopamine (PDA) is employed as a binding layer. These composites have been applied in HTPB/AP/RDX/Al propellants, which have the same theoretical formulation and hence identical specific impulse ( I sp ). However, these propellants differ in the interfacial structure due to different ways of assembling the ingredients, resulting in significant changes in their combustion performance. The thermal reactivity, burning rate, flame structure and the morphology of condensed combustion products (CCPs) of the prepared propellants have been investigated comprehensively. It has been shown that the pressure exponent (1–4 MPa) can be decreased from 0.236 to 0.024 (10 times lower) by the fine interfacial control, with more than 500 °C increase in flame temperature and 45.5% drop-off in the flame stand-off distance. In addition, the CCPs size distributions of the propellants have shown the enhanced interfacial interaction from Al@PDA@RDX composites can greatly inhibit the large-sized agglomeration of Al particles during the burning process.
研究领域:
推进剂工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
npj Flexible Electronics
·
2022
·Vol. 6
·期 1
·1-15
·
IF 12.019
Wang Xinyi,Tao Yan,Pan Shaoshan,Fang Xue,Lou Congcong,Xu Yunqi,Wu Jianpeng,Sang Min,Lu Liang,Gong Xinglong,Luo Tianzhi,Xuan Shouhu
With the booming development of smart wearable devices, flexible multifunctional composites with high sensitivity and well health therapy have evoked great interest for next-generation healthcare electronics. However, the weak biocompatibility, low breathability, and narrow sensing range greatly hinder the development of healthcare sensors. Herein, a porous, flexible and conductive MXene/Polydimethylsiloxane/Polydopamine/Polyurethane Sponge (MXene/PDMS/PDA/PU) nanocomposite is developed as a promising motion-detecting device with good flexibility, breathability, sensing performance, photothermal therapy and antibacterial activity. Benefiting from the porous structure and biocompatible surface, this multifunctional sensor is further fabricated into a diagnostic and therapeutic system for monitoring human body motion and performing hot therapy/antibacterial treatment in the application of sports injury site. Moreover, both the wireless smart insole and cushion are constructed to gait monitoring and sit position detecting. This multifunctional hybrid sponge not only demonstrates great potential for motion monitoring sensors but also exhibits wide potential in wearable medical assistive and therapeutic systems.
研究领域:
生物医学工程
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材料科学
·
健康监测
✓ 已验证
产品关联
DOI
高影响因子
Materials Science and Engineering B-Advanced Functional Solid-State Materials
·
2024
·
IF 3.9
Guojuan Zhang,Zhipeng Dai,Yujing Guo,Jinzhong Zhao,Yujie Han
In recent years, increased environmental pollution has become a major societal concern, since quite a few people experienced various diseases caused by heavy metal ion pollution. Rare earth oxide perovskite based adsorbents have been applied in heavy metal ions removal on account of a special affinity. However, perovskite tending to agglomeration promoted an urgent and necessary search for protective agents. Here, the rare earth oxide perovskite PDA@LaCo 0.35 Ni 0.65 O 3 was synthesized by introducing PDA onto LaCo 0.35 Ni 0.65 O 3 structure via hydrothermal method. The PDA providing with large specific surface area and oxygen-containing functional groups can enhance the adsorption capacity of nanomaterials for heavy metal ions in water. The as-obtained PDA@LaCo 0.35 Ni 0.65 O 3 displayed maximum adsorption capacity of 142.49 mg∙g −1 , 96.30 mg∙g −1 , 105.12 mg∙g −1 for Cu 2+ , Hg 2+ , Pb 2+ . The proposed PDA@LaCo 0.35 Ni 0.65 O 3 enabled to achieve excellent removal rates toward three heavy metal ions. This work brings new opportunities for sorbents innovation in the field of sewage treatment.
研究领域:
环境科学
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材料科学
·
水处理
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Xianmin Gong,Yujie Guo,Haijiao Sun,Hao Chen,Yi He,Wenru Zhang
The development of environmentally friendly anticorrosion coatings is of great significance for pipeline corrosion protection and marine environmental protection. The introduction of nontoxic inorganic nanomaterials into the Ni-W plating layer has great potential for enhancing corrosion resistance. However, the application of traditional Ni-W/ZrO 2 plating layer is limited by the large mass of ZrO 2 particles, easy to settle, poor dispersion in the plating solution, and insufficient corrosion resistance. In this study, polydopamine-functionalized ZrO 2 composite particles were prepared by surface modification of ZrO 2 with dopamine. These particles were embedded into Ni-W plating to form a new environmentally friendly anticorrosive Ni-W/P-ZrO 2 plating, and the PDA modification effectively improved the dispersion stability of ZrO 2 in the Ni-W plating solution. Owing to the synergistic effect of the physical barrier effect of ZrO 2 and the chemical corrosion inhibition of PDA, the Ni-W/P-ZrO 2 plating exhibits excellent corrosion resistance in 3.5 wt% NaCl solution, with a corrosion rate as low as 0.0466 mm/y, which is 64.83 % lower than that of Ni-W plating (0.1325 mm/y) and 22.55 % lower than that of Ni-W/ZrO₂ plating. Tribological tests showed that the Ni-W/P-ZrO 2 plating had a lower average coefficient of friction (COF = 0.343) and a smaller wear area (7.23E-5 mm 2 ). These results confirm that the introduction of P-ZrO 2 significantly improved the corrosion protection and wear resistance of the Ni-W coatings.
研究领域:
材料科学
·
腐蚀工程
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表面涂层
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纳米复合材料
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）