DESALINATION
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2025
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IF 9.8
Changting Chen,Yu Liu,Jianguo Ma,Shujuan Liu,Jianqiang Luo,Xiaolan Tong,Xuejiao Peng
The effective separation and recovery of uranium holds significant strategic importance for the sustainable management of radioactive wastewater. In view of the limitations of traditional adsorption techniques, a novel uranium extraction system was constructed in this study using a coupled electrochemical-adsorption approach. An innovative glyphosate-functionalized chitosan composite electrode (GP-CS@CF) was developed and integrated with a galvanic cell-assisted (GCA) electrochemical system to achieve high-efficiency uranium removal. Experimental results demonstrated that GP-CS@CF exhibited an excellent adsorption capacity, and the GCA method achieved a uranium extraction rate nearly seven times that of traditional physicochemical adsorption methods, with a maximum adsorption capacity of 4860 mg/g. Moreover, GP-CS@CF exhibited excellent anti-interference properties and regeneration ability. Mechanistic analysis suggested that the enhanced uranium removal was attributed to synergistic effects of three pathways: adsorption by GP-CS@CF, electrochemical reduction via the GCA, and O 2 -mediated oxidation. This study offers a cost-effective and environmentally sustainable strategy for uranium extraction, which has significant potential for practical application.
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高影响因子
Journal of Physical Chemistry C
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2025
·
IF 3.2
Yanfang Tao,Yanyan Li,Meng He,Xiandong Zhao,Xiaojie Yang,Jinmao Li,Li Zhao,Yang Li,Shimin Wang
Solar energy conversion into electricity through photovoltaic technology represents an environmentally friendly way of utilizing renewable energy sources for sustainable energy production. Low-cost and highly stable Sb2S3 solar cells are considered promising photovoltaic materials. However, Sb2S3 solar cells are currently facing problems such as poor electron transport capacity and grain boundary defects. In this work, an Sb2S3 precursor solution is prepared by the sol–gel method, to which a small amount of cesium is added for doping the light absorbing layer. By exploring the doping concentration, the optimal doping concentration of 0.05% is obtained. The doped Sb2S3 exhibits improved crystallinity, reduces surface roughness, increases particle size, decreases grain boundaries, and enhances carrier transport capacity, which is reflected in the increased open-circuit voltage (Voc = 0.678 V), short-circuit current density (Jsc = 15.92 mA/cm2), and power conversion efficiency (PCE = 4.81%). Cs doping effectively suppresses recombination centers by forming S–Cs metal bonds, thereby reducing impurities and reducing film surface defects, which collectively enhance the quality of Sb2S3 films. This study provides valuable insights and strategies for the further modification and optimization of Sb2S3 solar cells.
研究领域:
材料科学
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光伏技术
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半导体物理
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无机化学
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能源材料
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DOI
高影响因子
Materials
·
2024
·Vol. 17
·期 5
·1214
·
IF 3.1
Jiabao Wu,Xinpeng Chen,Aijing Li,Tieling Xing,Guoqiang Chen
Synthetic dyes are prone to water pollution during use, jeopardizing biodiversity and human health. This study aimed to investigate the adsorption and photocatalytic assist potential of sodium lignosulfonate (LS) in in situ reduced silver nanoparticles (AgNPs) and chitosan (CS)-loaded silver nanoparticles (CS-LS/AgNPs) as adsorbents for Rhodamine B (RhB). The AgNPs were synthesized by doping LS on the surface of chitosan for modification. Fourier transform infrared (FT-IR) spectrometry, energy-dispersive spectroscopy (EDS), scanning electron microscopy (SEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) were used to confirm the synthesis of nanomaterials. The adsorption and photocatalytic removal experiments of RhB were carried out under optimal conditions (initial dye concentration of 20 mg/L, adsorbent dosage of 0.02 g, time of 60 min, and UV power of 250 W), and the kinetics of dye degradation was also investigated, which showed that the removal rate of RhB by AgNPs photocatalysis can reach 55%. The results indicated that LS was highly effective as a reducing agent for the large-scale production of metal nanoparticles and can be used for dye decolorization. This work provides a new catalyst for the effective removal of dye from wastewater, and can achieve high-value applications of chitosan and lignin.
研究领域:
环境科学
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材料科学
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DOI
PubMed
高影响因子
BIOELECTROCHEMISTRY
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2012
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IF 3.759
Yi Fang,Yalong Ni,Guohui Zhang,Chun Mao,Xiaohua Huang,Jian Shen
The intrinsic properties and application potential of nanocolloids are mainly determined by size, shape, composition , and structure. In this case, a novel glucose biosensor was developed by using the chitosan–polypyrrole (CS–PPy) nanocomposites as special modified materials that coating onto the surface of glassy carbon electrode (GCE). The CS–PPy nanocomposites were characterized by transmission electron microscopy (TEM) and scanning electron microscopy (SEM), respectively. Moreover, the interaction of CS–PPy nanocomposites with glucose oxidase (GOD) was also investigated by the combined studies with Fourier transform infrared spectroscopy (FTIR) and circular dichroism spectroscopy (CD). Due to the conductivity of polypyrrole (PPy), good biocompatibility of CS, and advantages of nanoparticles , CS–PPy nanocomposites were chosen and designed to modify the GCE for the retention of GOD's biological activity and the vantage of electron transfer between GOD and electrodes. The GOD biosensor exhibited a fast amperometric response (5 s) to glucose, a good linear current–time relation over a wide range of glucose concentrations from 5.00 × 10 − 4 to 1.47 × 10 − 1 M, and a low detection limit of 1.55 × 10 − 5 M. The GOD biosensor modified with CS–PPy nanocomposites will have essential meaning and practical application in future that attributed to the simple method of fabrication and good performance.
研究领域:
生物医学工程
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材料科学
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分析化学
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DOI
高影响因子
Materials
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2018
·Vol. 11
·期 5
·717
·
IF 2.467
Jing Li,Huijie Zhang,Song Wang,Debing Long,Mingkai Li,Duofa Wang,Tianjin Zhang
The perovskite CsPbBr3attracts great attention due to its potential in optoelectronics. However, stability remains a major obstacle to achieving its effecting application. In this work, we prepared CsPbBr3solids through a simple reaction and investigated reversible conversion between CsPbBr3, Cs4PbBr6, and CsPb2Br5. We found that CsPbBr3can be respectively converted to Cs4PbBr6or CsPb2Br5by reacting with CsBr or PbBr2. Thermodynamic analysis demonstrated that the chemical reactions above were exothermic and occurred spontaneously. Moreover, the formed Cs4PbBr6could be converted to CsPbBr3reversely, and then progressively converted to Cs-deficient CsPb2Br5by extraction of CsBr with water. The CsPb2Br5was converted to CsPbBr3reversely under thermal annealing at 400 °C. The thermodynamic processes of these conversions between the three compounds above were clarified. Our findings regarding the conversions not only provide a new method for controlled synthesis of the ternary Cs-Pb-Br materials but also clarify the underlying mechanism for the instability of perovskites CsPbBr3.
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2020
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IF 4.65
Aiqing Zhao,Jinlei Zhang,Yunsong Di,Yajie Guo,Xiaoli Shan,Weiping Zhou,Zhixing Gan
The lead halide perovskite is chemical unstable toward water or other polar solvents because of its ionic nature, which hinders the applications in high-performance and reliable devices. One of the main instabilities is phase conversion among different dimensions of Cs–Pb–Br compounds. In this work, hydration induced phase conversion of Cs–Pb–Br compounds is investigated. There are two anomalous fluorescent variations during the phase conversion: (1) the hydration-induced fluorescence quenching is irreversible; (2) the conversion from Cs 4 PbBr 6 to CsPbBr 3 leads to the weakening of green fluorescence. With our study, we found out: first, the hydration-induced conversion is mainly caused by the precipitation of CsBr. The extracted CsBr is spatially separated from the Cs–Pb–Br compounds, thus breaking the back conversion from CsPbBr 3 to Cs 4 PbBr 6 ; second, for the as-prepared Cs–Pb–Br compounds, the CsPbBr 3 nanodomains are well passivated by wide bandgap Cs 4 PbBr 6 , thus exhibiting a strong green emission. Whereas, after hydration, the passivation by Cs 4 PbBr 6 disappears and a large number of defects and traps appear. Consequently, the green fluorescence intensity decreases although the content of CsPbBr 3 increases.
研究领域:
材料科学
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光电子学
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钙钛矿化学
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纳米材料
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DOI
高影响因子
JOURNAL OF INORGANIC BIOCHEMISTRY
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2021
·
IF 4.155
Xiang Gao,Hongxia Li,Xiaohui Niu,Deyi Zhang,Yi Wang,Haiyan Fan,Kunjie Wang
The present study attempted to synthesize carbon quantum dots (CQDs) through Aldol polymerization reaction , wherein acetone was used as the carbon source. A nano composite CQDs/Ag 2 S/CS was developed by loading as prepared CQDs and Ag 2 S nanoparticles on a chitosan substrate (CS). An in-situation growth of nanocomposites was adopted to study their antibacterial properties . Staphylococcus aureus (Gram-positive), Escherichia coli (Gram-negative) and methicillin-resistant Staphylococcus aureus were selected as the model bacteria. The CQDs/Ag 2 S/CS nanocomposites exhibited excellent inhibition not only against common pathogenic bacteria, but also those well-known drug-resistant bacteria. Moreover, compared to traditional antibiotics, the as prepared nanocomposites in the present work do not likely cause bacterial drug resistance , which make them a potential candidate for a new type of clinically applicable antibiotics.
研究领域:
生物医学工程
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材料科学
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微生物学
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DOI
PubMed
高影响因子
Materials Science & Engineering C-Materials for Biological Applications
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2017
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IF 4.164
Jian-Tao Lin,Wen-Jia Pan,Jun-Ai Zhang,Wei Wang,Jia Zhong,Jia-Min Su,Tong Li,Ying Zou,Guan-Hai Wang
The codelivery of drug and gene is a promising method for cancer treatment. In our previous works, we prepared a cationic micelles based on chitosan and poly-( N -3-carbobenzyloxylysine) (CS-g-PZLL), but transfection ratio of CS-g-PZLL to Hela cell was low. Herein, to improve the transfection efficiency of CS-g-PZLL, curcumin was loaded in the CS-g-PZLL micelle. After irradiation, the obtained curcumin loaded micelle showed a better transfection, and the p53 protein expression in Hela cells was higher. The apoptosis assay showed that the complex could induce a more significant apoptosis to Hela cells than that of curcumin or p53 used alone, and the curcumin loaded micelle inducing apoptosis was best after irradiation. Therefore, CS-g-PZLL is a safe and effective carrier for the codelivery of drug/gene, and curcumin could be used as a photosensitizer to induce a photoenhanced gene transfection, which should be encouraged in improving transfection and tumor therapy.
研究领域:
生物医学工程
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分子生物学
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癌症治疗
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DOI
PubMed
高影响因子
EUROPEAN POLYMER JOURNAL
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2023
·
IF 6
Yongwei Cai,Hong Yang,Jianxiang Li,Ronghua Gu,Yuhang Dong,Qi Zhao,Yao Chen,Yuanju Li,Ruru Wang
Catheter-associated urinary tract infections (CAUTI) account for 40% of all hospital-acquired infections and more than 1 million CAUTIs occur annually in the United States and Europe with increased morbidity and mortality. Although anti-bacterial coating is an effective way to solve this problem, so far only limitted progress has been made. In this paper we prepared a novel antibacterial silver nanoparticles poly(acrylamide)-chitosan-polyvinylpyrrolidone (AgNPs-PAAm-CS-PVP) composite hydrogel coating on latex urinary catheters by a simple dipping method. The average particle size, the size distribution as well as the polydispersity index (PDI) value of the AgNPs were examined by using TEM analysis. The surface morphology and roughness, the element contents, the functional groups, the static contact angles, and the surface energy of the coatings were characterized by using SEM, EDS, AFM, FTIR, XPS, and a video optical contact angle instrument, respectively. The amount of the total Ag released from the hydrogel was tested by ICP-MS. The antibacterial and antiadhesion efficacies against Gram-negative E. coli of the coated urinary catheters were evaluated with an inhibition zone test and fluorescence microscopy. A synergistic antibacterial mechanism of AgNPs and CS was also presented. The results showed that the synthesized AgNPs in the hydrogel had a spherical shape with an average diameter of 25.9 nm. The AgNPs-PAAm-CS-PVP hydrogel had a more durable release of the antibacterial agents of AgNPs and Ag + , which explains why the coated urinary catheters had long-term antibacterial activity. The mathematical modelling of Ag release kinetics supported Case I or Fickian diffusion mechanism for the AgNPs-PAAm-CS-PVP hydrogel. The hydrogel-coated urinary catheters became smoother and more hydrophilic which further explains why the coated urinary catheter decreased bacterial adhesion. More importantly, bacterial activity and bacterial adhesion assays showed that both the outer and inner surfaces of the AgNPs-PAAm-CS-PVP hydrogel-coated urinary catheters had strong antibacterial property against E. coli . Furthermore, the hydrogel-coated urinary catheters showed high hemocompatibility and cytocompatibility for promising biomedical applications. The AgNPs-PAAm-CS-PVP hydrogel-coated urinary catheters have great potential for decreasing CAUTIs.
研究领域:
材料科学
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生物材料
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生物医学工程
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传染病学
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纳米技术
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
·
IF 13.3
Mochou Gao,Chenglin Xu,Jinyu Deng,Tong Zhu,Zhilong Xie,Xueyan Zou,Wensheng Yang
Chitosan (CS) was deposited onto the surface of Fe 3 O 4 nanoparticles by anionic cross-linking to obtain Fe 3 O 4 @CS nanocomposite with improved biocompatibility ascribed to CS. The optimized reaction condition for preparing Fe 3 O 4 @CS was established. Furthermore, polyacrylic acid (PAA) was grafted onto the surface of Fe 3 O 4 @CS to obtain magnetically responsive Fe 3 O 4 @CS/PAA nanocomposite; and dextrin was grafted onto the surface of Fe 3 O 4 @CS/PAA by hydrogen bonding to obtain Fe 3 O 4 @CS/dextrin nanoadsorbent with desired magnetic response for the rapid purification of the maltose binding protein-tagged (MBP-tagged) fusion proteins from Escherichia coli lysate. The as-obtained Fe 3 O 4 @CS/PAA nanocomposite was loaded with relevant antibodies to construct the platform for the purification of MBP-tagged, glutathione S-transferase-tagged, and histidine-tagged fusion proteins. Findings demonstrate that multi-tagged proteins platform exhibits rapid recognition and high binding abilities as well as desired specification, universality, and recycling ability to the tested tagged fusion proteins, because they can strongly load different protein ligands.
研究领域:
纳米技术
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生物技术
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生物化学
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材料科学
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DOI
高影响因子
CHEMISTRY OF MATERIALS
·
2024
·
IF 7.2
Huan Pei,Luyong Zhang,Huanhuan Cheng,Shibin Wang,Zhihua Yang,Fangfang Zhang,Shilie Pan
Four hydroxyfluorooxoborates, α-K2[B3O3F4(OH)] (I), β-K2[B3O3F4(OH)] (II), Cs(NH4)3[B3O3F4(OH)]2 (III), and RbCs5[B3O3F4(OH)]3 (IV), with identical fundamental building block (FBB) [B3O3F4(OH)]2–, were obtained successfully and characterized comprehensively. A phase transition between I and II was detected, which led to a space group evolution from centrosymmetric to noncentrosymmetric. The F– and OH– substitution effect was studied based on II and its hydroxyborate derivative K2[B3O3(OH)5], which reveals the corresponding changes in the band gap and the nonlinear optical properties. In addition, the cationic-size effect on the arrangement of the [B3O3F4(OH)]2– FBBs and the birefringent properties were discussed for the title compounds. This study contributes to the advancement of structural chemistry and sheds some light on the structure–property relationship studies of hydroxyfluorooxoborates.
研究领域:
材料化学
·
晶体学
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DOI
高影响因子
Physica Status Solidi-Rapid Research Letters
·
2025
·
IF 2
Yuyang Li,Hui Liu,Li Ding,Deren Yang,Yanjun Fang
Perovskite nanocrystals (PNCs) have emerged as promising candidates for X-ray detection due to their large X-ray stopping power and their presynthesized crystalline nature, which enables high-quality thick-film deposition via a scalable spray coating process. However, the inherent high defect density at the surface of PNCs significantly hampers the charge collection efficiency and overall stability of X-ray detectors. In this study, the Cs/Pb precursor ratio is identified as a critical factor in mitigating defect formation in CsPbBr 3 PNCs. By introducing a moderate Cs-deficient stoichiometry, both defect density and self-doping within the PNCs are effectively reduced. Additionally, PNCs are incorporated into organic bulk-heterojunctions to fabricate nanocomposite X-ray detectors, showing that this stoichiometry regulation not only enhances the detectors’ sensitivity but also decreases the dark current and significantly improves their environmental stability. These advancements hold substantial potential for high-performance flat-panel X-ray imaging applications in the future.
研究领域:
材料科学
·
物理学
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DOI
高影响因子
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