RSC Advances
·
2025
·Vol. 15
·期 46
·38585-38596
·
IF 4.6
Shukai Sun,Yue Zhai,Qingwu Tian,Peng Zhao,Hong Cheng,Deng Pan,Junna Sui,Yusun Zhou,Chao Xuan,Tingting Zhou
Magnetic molecularly imprinted polymers (MMIPs) were synthesized using magnetic Fe3O4@SiO2 as a carrier for the selective recognition and adsorption of doxorubicin (DOX) and epirubicin (EPI) in plasma. Then, the method was combined with high-performance liquid chromatography-ultraviolet detection (HPLC-UV) to realize rapid and accurate detection of DOX and EPI concentrations in plasma. The structures of the prepared MMIPs were characterized by X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, and magnetic saturation. As observed, the prepared MMIPs had a uniform appearance and excellent magnetic properties. Then, the adsorption performance of MMIPs was verified through static, dynamic, and selective adsorption tests. MMIPs were found to have high adsorption capacity (8.36 and 8.19 mg g−1), high selectivity (imprinting factors of 34.83 and 8.03), and rapid adsorption for DOX and EPI, respectively. Next, HPLC-UV was used for quantitative analysis. The prepared method had a good linear relationship (0.0001–0.5 mg mL−1 for DOX and 0.0002–0.5 mg mL−1 for EPI) and low detection limits (0.04613 ng mL−1 for DOX and 0.08969 ng mL−1 for EPI). The combination of magnetic solid-phase extraction and HPLC-UV was a highly specific and sensitive method for determining DOX and EPI concentrations in plasma.
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PROGRESS IN ORGANIC COATINGS
·
2025
·
IF 7.3
Xueying Shan,Qixin Huang,Yuxuan Diao,Boyou Hou,Jiao Gao,Jinchun Li
Designing and preparing highly transparent epoxy (EP) coatings with excellent flame retardant properties and mechanical toughness has been a difficult challenge. In this work, a Schiff base-derived flame retardant (PDSASi) was designed and synthesized via a simple two-step process. Multifunctional EP composites were then prepared using this flame retardant, exhibiting excellent flame retardancy owed to the synergistic effect of phosphorus, nitrogen, and silicon elements presented in PDSASi. With the addition of only 4 wt% PDSASi, EP composites achieved a V-0 rating in UL-94 testing and exhibited an LOI value of 29.2 %. In addition, compared to pure EP, the total heat release (THR), peak heat release rate (PHRR), and CO production rate (PCOPR) were reduced by 29.7 %, 25.6 %, and 14.0 %, respectively, with the incorporation of 8 wt% PDSASi. The flame-retardant mechanism was analyzed. It was demonstrated that PDSASi exhibited excellent the condensed-phase flame retardant as well as notable gas-phase flame retardant. In addition, excellent UV resistance and high transparency were exhibited by EP/PDSASi composites. In terms of mechanical properties, the cured EP/PDSASi composites exhibited notable improvements in tensile strength and impact toughness, which were enhanced by 40.6 % and 123.8 %, respectively, compared to pure EP, owing to the incorporation of flexible silane chain segments into the molecular structure of PDSASi. In this work, the effects of PDSASi on the thermal stability, flame retardancy, UV resistance, and mechanical properties of EP were viewed as a feasible strategy for designing and preparing multifunctional, high-performance EP composites.
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ACS Applied Engineering Materials
·
2026
·
IF 3.5
Ruoxin Fan,Yan Miao,Qingkang Wang,Kaiyu Wu
Terahertz (THz) filters are pivotal for sensing and imaging, yet their performance on flexible substrates is often hindered by scattering losses from rough metal–polymer interfaces. This work introduces a UV-release tape (UV-RT) assisted transfer strategy that directly addresses this challenge by enabling the lossless transfer of metallic metagratings from silicon to a flexible polymer, thereby preserving an atomically smooth functional interface with a roughness of Rq ≈ 0.245 nm. This ultrasmooth surface is fundamental to the demonstrated high-performance flexible device, which combines multiple device-level functionalities on a single platform, including passive switching between bandpass and bandstop filtering via geometric design, distinct polarization-selective resonances, and active mechanical frequency tuning with a high sensitivity of 18.65 GHz %–1. By providing a versatile transfer route to atomically flat, terahertz photonics with well-defined and stable resonant characteristics, the UV-RT method supports flexible terahertz photonic structures for resonance-based filtering and tuning.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Zhaoxiang Liu,Guihua Yang,Haiying Wei,Shoujuan Wang,Zhongming Liu,Chenglong Fu,Shihao Su,Fangong Kong
Acid precipitation is a widely adopted method for lignin recovery from pulping black liquor, where the precipitation parameters determine the structural and physicochemical characteristics of the isolated lignin. Given the structural complexity and heterogeneity of lignin, the impact of acid type on its molecular structure and surface chemistry remains unclear. This study investigates how differences in protonation kinetics among various acids influence lignin particle morphology and their interfacial behavior in cellulose composite films. The results indicate that lignin precipitated using HCl forms spherical particles with size (190 ± 51.1 nm), good monodispersity (PDI = 0.072) and long-term aqueous stability. This is attributed to the strong acidity of HCl, which enables rapid H⁺ release and complete protonation of lignin molecules. Conversely, the weaker acidity of ethanoic acid (HAc) leads to a more gradual protonation, resulting in hierarchically structured particle aggregates with a broader size distribution (240 ± 111.6 nm, with many nanoparticles <50 nm). In addition, HCl-lignin and HAc-lignin composite films showed 38.4% and 39.3% increases in elongation at break over pure cellulose films, along with substantial UV-blocking efficiency enhancements of 540% and 745%.
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ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Yutong Yang,Huiru Xu,Meng Li,Zhenlong Li,Hualei Zhang,Baolin Guo,Jie Zhang
The on-demand replacement of multifunctional hydrogel wound dressings helps to avoid bacterial colonization, and the on-demand painless peeling of tissue adhesive hydrogels on the wound site remains a major challenge to be solved. In this work, we design and develop a series of multifunctional dynamic Schiff base network hydrogels composed of cystamine-modified hyaluronic acid, benzaldehyde-functionalized poly(ethylene glycol)-co-poly(glycerol sebacate), and polydopamine@polypyrrole nanocomposite (PDA@PPy) with mild on-demand removability to enhance drug-resistant bacteria-infected wound healing. These hydrogels exhibited ideal injectable and self-healing properties, excellent tissue adhesion, in vivo hemostasis, good antioxidation, and conductivity. PDA@PPy inspired by melanin endows hydrogels with excellent antioxidant capacity, UV-blocking ability, and photothermal anti-infection ability. Based on the dynamic oxidation–reduction response of disulfide bonds inspired by the dissociation of the tertiary spatial structure transformation of poly-polypeptide chains, these hydrogels can achieve rapid painless on-demand removal under mild conditions by adding dithiothreitol. These multifunctional hydrogels significantly promoted collagen deposition and angiogenesis in the MRSA-infected full-thickness skin repair experiment. All the results showed that these multifunctional hydrogels with painless on-demand removal property showed great potential in clinical treatment of infected wounds.
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JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
·
2022
·Vol. 98
·期 2
·498-505
·
IF 3.709
Qingping Du,Zuanjia Zhong,Ting Zhang,Yanbin Xu,Guoqing Zhang,Shangquan Wu,Jiaxin Xu
Background Biotricking filtration (BTF) based on absorption and biodegradation of waste gas by microorganisms in a biofilm can be used to degrade with difficulty hydrophobic volatile pollutants. Photocatalysis is a promising technology for the abatement of gaseous contaminants because of its nonselective oxidation of volatile organic compounds; however, photocatalysis technology has the limitations of high energy consumption and low mineralization efficiency. This study, therefore, aimed to investigate the synergistic effects of UV/TiO 2 photocatalysis (PCO) pretreatment and BTF in treating gaseous m -xylene. Results BTF incubated with a mold, Aspergillus sp. S1, was acclimated with m -xylene as the sole carbon source. A combined system of PCO with BTF was developed to remove gaseous m -xylene. The results showed that the startup period was shortened by 3 days in the PCO-BTF combined system compared to that with BTF alone. The removal efficiency reached 73% and 91% for the BTF and PCO-BTF systems respectively when the empty bed residence time was extended to 90 s. In addition, PCO-BTF could withstand transient shock loading of m -xylene of 5000 mg m −3 and gradually restore its decontamination performance. Conclusions PCO pretreatment was effective in the enhancement of the removal capacity of BTF for m -xylene. The PCO-BTF system proposed in this study provides an attractive alternative to abate hydrophobic volatile pollutants. The integration of PCO essentially prompted the capability of Aspergillus sp. S1 in the BTF unit, which paves the way for the treatment of gaseous waste at an industrial scale. © 2022 Society of Chemical Industry (SCI).
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ChemPhotoChem
·
2022
·Vol. 6
·期 5
·e202100208
·
IF 3.679
Tian-Jiao Lou,Jing-Qi Wang,Wenyi Wang,Tao Wang,Peng-Fei Qian,Ze-Long Bao,Li-Chao Jing,Xiao-Tong Yuan,Hong-Zhang Geng
Graphical Steps in the right direction : ZnO/CNT (carbon nanotube) heterojunctions were prepared by non-covalent modification of CNTs using a simple spraying method and subsequent annealing. This heterojunction was constructed without affecting the film sheet resistance and transmittance, and the non-covalently modified CNT showed a substantial improvement in the recession time relative to the pristine CNT and improved the device with higher photoresponsivity and detectivity at 365 nm. Flexible electronic devices have received significant attention in recent years as a result of their flexibility and portability. Carbon nanotube (CNT) films could serve as a promising material for photodetection because of their broad absorption spectral coverage. In this research, vertical ultraviolet (UV) to visible (UV/Vis) detectors based on tannic acid functionalized carbon nanotube/zinc oxide (TCNT/ZnO) heterojunctions were prepared by a simple spraying method. The TCNT electrode had excellent photoelectric properties with a sheet resistance of 40.6 Ω/sq and transmittance of 80.4 % at 550 nm, and the resulting TCNT/ZnO device could achieve photocurrent of 3.0 mA at 360 nm in the UV range, a recession time of 8.05 s, photoresponsivity of 7.12 A/W, and detectivity of 25.2×10 11 Jones. As a comparison, for the pure CNT electrode with a sheet resistance of 45.5 Ω/sq and transmittance of 79.6 % at 550 nm, the CNT/ZnO photocurrent was only 0.6 mA at 360 nm, with a recession time of 17.25 s, photoresponsivity of 1.00 A/W, and detectivity of 3.4×10 11 Jones. The prepared device was also able to operate stably after 1000 mechanical bending tests and maintained more than 95 % detectivity, providing a feasible path for the generation of carbon nanotube based photodetector devices.
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CELLULOSE
·
2022
·Vol. 29
·期 4
·2699-2709
·
IF 6.123
Cui Yifan,Zheng Guolin,Jiang Zhe,Zhou Yu,Wang Qiang,Zhou Man,Wang Ping,Yu Yuanyuan
The development and improvement of fabric-based stretchable strain sensors play a vital role in constructing wearable devices. In this paper, a flexible and sensitive cotton-based strain sensor for human motion monitoring was successfully developed by facile LBL-ESA (layer-by-layer electrostatic self-assembly) of chitosan (or chitosan quaternary ammonium salt) and poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate), abbreviated to PEDOT:PSS. Chemical structure and microscopic morphology of the cotton fabric coated with PEDOT:PSS were measured using X-ray photoelectron spectroscopy, Raman spectroscopy, Scanning electron micrographs, Fourier transform infrared spectrometer and color strength (K/S value). Electrical conductivity of the fabric changed with the “odd–even” oscillations of K/S value of the cotton fabric. Furthermore, cotton fabric alternately deposited with five cycles reached the highest electrical conductivity (0.335 mS/cm). Meanwhile, the fabric presents excellent UV protection capacity (maximum UPF value of 385.07), which was 24.4 times of pristine cotton fabric (15.76). In addition, cotton fabric strain sensor coated by PEDOT:PSS could effectively detect finger and knee movements of humans, showing a promising prospect in the field of human rehabilitation training, real-time monitoring, and gesture recognition due to its good stability and being highly responsive.
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ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Min Zhang,Qili Yang,Tianshuo Hu,Lele Tang,Yonghao Ni,Lihui Chen,Hui Wu,Liulian Huang,Cuicui Ding
Recently, versatile hydrogels with multifunctionality have been widely developed with emerging applications as wearable and implantable devices. In this work, we reported novel versatile hydrogels by self-catalyzing the gelation of an interpenetrating polymer network consisting of acrylic acid (AA) monomers and GA-modified collagen (GCOL) in situ decorated silver nanoparticles (AgNPs). The resultant hydrogel, namely AgNP@GCOL/PAA, has many desirable features, including good mechanical properties (such as 123 kPa, 916%, and 1961 J m−2 for the fracture stress, strain and tearing energy) that match with those of animal skin, excellent self-healing performance, favorable conductivity and strain sensitivity as a flexible biosensor, and excellent antibacterial and anti-UV properties, as well as the strong adhesiveness on skin. Moreover, AgNP@GCOL/PAA showed excellent biocompatibility via in vitro cell culture. Remarkably, AgNP@GCOL/PAA displayed superior hemostatic properties with sharply decreasing blood loss for a mouse liver incision, closely related to its strong self-adhesion which produced anchoring strength to the bleeding site and thus formed a network barrier with liver tissue. This study provides new opportunities for the facile preparation of widely used multifunctional collagen-based hydrogels based on a simple pyrogallol-Ag system.
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Journal of Materials Research and Technology-JMR&T
·
2022
·
IF 6.267
Yizhuo Xu,Dingyuan Zheng,Xiaojian Chen,Wenrui Yao,Yuning Wang,Zihao Zheng,Haiyan Tan,Yanhua Zhang
To improve the inherent properties of polylactic acid (PLA), cellulose nanocrystals (CNCs) have been picked up as the nanofillers. However, the hydrophilic CNCs show poor compatibility with hydrophobic PLA, which usually fails to improve the performance of PLA. Inspired by mussel, polydopamine (PDA) decorated CNCs (PDA@CNCs) were utilized as nanofillers for PLA modification. With the introduction of PDA grafting on the surface of CNCs, the compatibility of CNCs in the PLA matrix was improved. The PDA acts as the bridge to enhance the interfacial adhesion between CNCs and PLA, improving the mechanical properties of the composite. At low addition level (1 wt%), the obtained composites (PDA@CNCs/PLA) showed enhanced mechanical properties 17.31% and 33.01% increases for tensile strength and elongation at break, respectively. In addition, the existence of PDA with UV radiation absorption performance induces PDA@CNCs/PLA UV-shielding property, which could undoubtedly extend the cycle time of the product and has the potential to be used in packaging for light-sensitive foods, pharmaceuticals, etc. The mussel-inspired PDA decoration of CNCs by this work provided a new strategy for the enhancement of the inherent properties of PLA.
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ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Shannan Chang,Jiajing He,Slawomir Prucnal,Jieyin Zhang,Jianjun Zhang,Shengqiang Zhou,Manfred Helm,Yaping Dan
Delta doping (δ-doping) can find a wide range of applications in advanced metal oxide semiconductor field effect transistors, deep UV photodetectors, quantum devices, and others. In this work, we formed a δ-doping layer in silicon by employing flash lamp annealing to treat the PCl3 monolayers grafted on silicon surfaces. The δ-doping layer is atomically thin (<1 nm). Low-temperature Hall measurements show that the δ-doping layer is in a metallic state and exhibits a weak localization phenomenon, implying that a two-dimensional electron gas is formed. When we form such an n-type δ-doping layer on a highly doped p-type Si substrate, a highly sensitive solar-blind UV photodetector is created, which traditionally was only possible by using wide band gap semiconductors such as gallium nitride (GaN) or silicon carbide (SiC).
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Water
·
2022
·Vol. 14
·期 18
·2811
·
IF 3.53
Zhixiong Liu,Wenlei Qin,Lei Sun,Huiyu Dong,Xiangjuan Yuan,Fei Pan,Dongsheng Xia
The degradation of acyclovir (ACY) and atenolol (ATL) in the UV/peroxydisulfate (UV/PDS) process has been systematically considered, focusing on the degradation kinetics, theoretical models, and reaction pathways via applying a microfluidic UV reaction system. The removal efficiencies of ACY and ATL were >94.8%, and the apparent degradation rate constants (kobs) were 0.0931 and 0.1938 min−1at pH 6.0 in the UV/PDS system. The sulfate radical (SO4•−) and hydroxyl radical (•OH) were identified as the major reactive radicals. The pH-dependent reaction rate constants of ACY and ATL with•OH and SO4•−were measured via the competing kinetics. Meanwhile, the contributions of•OH and SO4•−for ACY and ATL degradation were calculated by the radical steady-state hypothesis, and the results revealed that SO4•−occupied a decisive position (>84.5%) for the elimination of ACY and ATL. The contribution of•OH became more significant with the increasing pH, while SO4•−was still dominant. Moreover, ACY and ATL degradation performance were systematically evaluated via the experiments and Kintecus model under different operational parameters (Cl−, Br−, HCO3−, NOM, etc.) in the UV/PDS process. Furthermore, the plausible reaction pathways of ACY and ATL were elucidated based on the Fukui function theory and ultra-performance liquid chromatography-tandem quadrupole time-of-flight mass spectrometry (UPLC-QTOF-MS) analysis. The UV/PDS process has been demonstrated to be an efficient and potential application for micropollutants mitigation.Keywords:UV/PDS;micropollutants;radical contribution rates;kinetic models;degradation pathways
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