ELECTROPHORESIS
·
2020
·Vol. 42
·期 6
·719-724
·
IF 3.081
Evgeniya V. Polyakova,Olga V. Shuvaeva,Olga S. Koshcheeva,Yuliya E. Tyutereva,Ivan P. Pozdnyakov
Arsenic aromatic compounds including p-arsanylic acid (pASA) are still widely used in a number of countries as the feed additives in animal breeding resulting in its entering the environment. Under the influence of oxidizing agents or UV radiation, pASA undergoes transformations leading to generation of inorganic arsenic species that are more mobile and toxic than organic ones. On the one hand, an approach based on the treatment of contaminated waters by UV irradiation seems perspective for their detoxification, but the feasibility of this approach depends on the composition of the products forming as a result of photodegradation. In the present work, a CZE was applied for the study of the pASA degradation process during stationary (308 nm) photolysis in the presence of Fe(III)-oxalate complex. A developed assay allowed controlling the parent compounds and also As-containing products of pASA degradation, presented mainly by arsenate and arsenite ions. It was found that the main inorganic derivatives of the pASA photolytic conversions are presented by arsenate and arsenite ions whose ratio depends on the initial amount of pASA and reaction conditions.
研究领域:
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NANOTECHNOLOGY
·
2016
·Vol. 27
·期 14
·145701
·
IF 3.573
Yong Zuo,Ji-Ming Song,He-Lin Niu,Chang-Jie Mao,Sheng-Yi Zhang,Yu-Hua Shen
P-nitrophenol (4-NP) and hydrazine hydrate are considered to be highly toxic pollutants in wastewater, and it is of great importance to remove them. Herein, TiO2-loaded Co0.85Se thin films with heterostructure were successfully synthesized by a hydrothermal route. The as-synthesized samples were characterized by x-ray diffraction, x-ray photoelectron spectroscopy, transmission electron microscopy and selective-area electron diffraction. The results demonstrate that TiO2 nanoparticles with a size of about 10 nm are easily loaded on the surface of graphene-like Co0.85Se nanofilms, and the NH3 · H2O plays an important role in the generation and crystallization of TiO2 nanoparticles. Brunauer–Emmett–Teller measurement shows that the obtained nanocomposites have a larger specific surface area (199.3 m2 g−1) than that of Co0.85Se nanofilms (55.17 m2 g−1) and TiO2 nanoparticles (19.49 m2 g−1). The catalytic tests indicate Co0.85Se–TiO2 nanofilms have the highest activity for 4-NP reduction and hydrazine hydrate decomposition within 10 min and 8 min, respectively, compared with the corresponding precursor Co0.85Se nanofilms and TiO2 nanoparticles. The enhanced catalytic performance can be attributed to the larger specific surface area and higher rate of interfacial charge transfer in the heterojunction than that of the single components. In addition, recycling tests show that the as-synthesized sample presents stable conversion efficiency for 4-NP reduction.
研究领域:
材料科学
·
环境科学
·
化学
✓ 已验证
DOI
高影响因子
BIOMATERIALS
·
2011
·
IF 7.883
Feihu Wang,Dianrui Zhang,Qiang Zhang,Yuxuan Chen,Dandan Zheng,Leilei Hao,Cunxian Duan,Lejiao Jia,Guangpu Liu,Yue Liu
Multidrug resistance (MDR) in tumor cells is a significant obstacle for successful cancer chemotherapy. Overexpression of drug efflux transporters such as P-glycoprotein (P-gp) is a key factor contributing to the development of tumor drug resistance. Verapamil (VRP), a P-gp inhibitor, has been reported to be able to reverse completely the resistance caused by P-gp. For optimal synergy, the drug and inhibitor combination may need to be temporally colocalized in the tumor cells. Herein, we investigated the effectiveness of simultaneous and targeted delivery of anticancer drug, paclitaxel (PTX), along with VRP, using DOMC-FA micelles to overcome tumor drug resistance. The floate-functionalized dual agent loaded micelles resulted in the similar cytotoxicity to PTX-loaded micelles/free VRP combination and co-administration of two single-agent loaded micelles, which was higher than that of PTX-loaded micelles. Enhanced therapeutic efficacy of dual agent micelles could be ascribe to increased accumulation of PTX in drug-resistant tumor cells. We suggest that the synergistic effect of folate receptor-mediated internalization and VRP-mediated overcoming MDR could be beneficial in treatment of MDR solid tumors by targeting delivery of micellar PTX into tumor cells. As a result, the difunctional micelle systems is a very promising approach to overcome tumor drug resistance.
研究领域:
药学科学
·
肿瘤学
·
药物递送系统
·
癌症治疗
✓ 已验证
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY
·
2024
·
IF 4.3
Li-Yang Shao,Shuo Wang,Shu-Ni Li,Jie Meng,Jiao-Na Yue,Wen-Yu Yuan,Ying Wang,Quan-Guo Zhai
Developing catalysts with excellent CO2 capture capability and electrochemical CO2 reduction reaction (CO2RR) at a wide potential range simultaneously is significant but remains a formidable challenge. Here, two novel InMg defective trinuclear cluster-based MOFs (SNNU-41 and SNNU-42) with abundant p-block unsaturated coordinated sites were reported and exhibited good CO2 capture and CO2RR performance simultaneously. Due to the suitable micropores, SNNU-41 showed higher CO2 capture ability at different adsorption pressure conditions. On account of the rigid framework and the closer p band center to Fermi level, SNNU-42 accelerated the conversion of CO2 molecule to C1 efficiency. Notably, via adjusting the ratio of p-block metal (In) in the SNNU-42 framework, the performance of the CO2RR was promoted drastically. SNNU-42 with the InMg (1:1.8) mixed cluster delivered an excellent Faradaic efficiency of 91.3% for C1 products and high selectivity of 72.0% for HCOOH at −2.5 V (vs Ag/Ag+) with a total current density of 77.2 mA cm–2. This work provides a possibility for efficient CO2 capture and CO2RR electrocatalysts through the modulation of electronic structures and composition in MOFs.
研究领域:
材料科学
·
催化化学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Fan Zhang,Jianru Huang,Rui Ou,Jiannan Chen,Weirong Yao,He Qian,Yuliang Cheng
In this study, novel dual-emission Au nanoclusters (BSA@CDs-BSA-AuNCs) were developed via a two-step in-situ synthesis strategy. Step one, bovine serum albumin (BSA) doped carbon dots (BSA@CDs) covalently bound to BSA under the coupling effect of N-hydroxysuccinimide (NHS) and 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide (EDC) to obtain BSA@CDs-functionalized BSA (BSA@CDs-BSA); step two, in-situ synthesis of Au nanoclusters using BSA@CDs-BSA as template was conducted and BSA@CDs-BSA-AuNCs with a size of 30 nm and two characteristic emission peaks at 450 and 675 nm confirmed to be attributed to BSA@CDs and BSA-templated AuNCs (BSA-AuNCs) respectively were fabricated, presenting an emission separation of 225 nm. The prepared nanoclusters were fully characterized. Notably, the two characteristic emission peaks both have been redshifted compared to the original BSA@CDs and BSA-AuNCs respectively, due to possible charge transfer occurred between BSA ligand and the above two fluorophores. Further, it has been applied to establish an original ratiometric fluorescence sensor for p-nitrophenol (p-NP) detection with excellent performance, which has not been reported in literatures.
研究领域:
分析化学
·
纳米材料科学
·
环境监测
✓ 已验证
产品关联
DOI
高影响因子
FOOD CONTROL
·
2024
·
IF 5.6
Zhumiao Ye,Haidu Yuan,Jianhao Zhang,Wenjing Yan,Changrui Xing
Fresh pork is easily contaminated by microorganisms, leading to spoilage. Dielectric barrier discharge (DBD) cold plasma technology has shown significant advantages in the preservation of meat. However, severe lipid oxidation of pork resulting from DBD treatment greatly limits its development. Herein, the antibacterial D@MSNs-P/PCL nanofiber membranes were prepared by modification polycaprolactone (PCL) with pre-reported nanomaterials (D@MSNs-P) through electrostatic spinning. Compared with the PCL membranes, the D@MSNs-P/PCL membranes showed better water stability, lower water vapor transmission rate, stronger hydrophobicity, and potent antibacterial activity. The D@MSNs-P/PCL membranes can be used for wrapping fresh pork before treatment with DBD plasma, which can not only improve the antibacterial efficiency but effectively inhibit the lipid oxidation and color change of fresh pork, extending the shelf life for 2 days. The developed D@MSNs-P/PCL membranes can also be used alone to preserve other fresh meat or oily food, with a wide range of application prospects.
研究领域:
食品科学
·
材料科学
·
微生物学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2023
·Vol. 27
·期 12
·3583-3595
·
IF 2.5
Chen Quangang,He Yi,Yan Siming,Zhou Huilian,Li Hongjie,Li Zhiyuan,Wei Kaijun,Chen Wen,Yan Jing,Wu Guiyang,Yuan Xi
The Ni-P-WS 2 composite coatings with prominent structures were constructed by composite electrodeposition by adding tungsten disulfide (WS 2 ) nanoparticles to the electroplating solution. Modification of the Ni-P-WS 2 composite coating with hexadecyltrimethoxysilane (HDTMS) is going to achieve the superhydrophobic effect. The successful construction of the superhydrophobic surface was demonstrated by X-ray diffractometer (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and contact angle measurement (CA). Electrochemical impedance spectroscopy (EIS) was used to investigate the corrosion resistance. The finding indicates that hexadecyltrimethoxysilane (HDTMS) reduces the surface energy of the Ni-P-WS 2 composite coating, generates a film on its rough surface, blocks the corrosive medium, and improves the corrosion resistance of the composite coating. The Ni-P-WS 2 nanocomposite coating’s water contact angle is 156.8° and its sliding angle is 8° at 3 g/L of WS 2 particle concentration. And the composite plating has the highest self-corrosion potential ( E corr = − 0.285 V) and the lowest self-corrosion current density ( i corr = 3.206 μA cm −2 ), with a better corrosion resistance. In addition, the prepared superhydrophobic coating showed excellent corrosion resistance under the hydrophobic barrier and the layer barrier of WS 2 nanosheets.
研究领域:
材料科学
·
表面工程
·
腐蚀与防护
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry C
·
2025
·
IF 5.1
Jian Chen,Yifan Wang,Jiajia Gao,Jialiang Tian,Yuelong Ma,Wei Shen,Kun Cao,Yingying Fu,Lihui Liu,Shu-Fen Chen
The inferior hole injection efficiency in blue perovskite light-emitting diodes (PeLEDs), caused by the large hole injection barrier and low hole mobility of conventional hole transport layers (HTLs), remains a critical limitation to achieving higher external quantum efficiency (EQE) and device stability. To address this challenge, we propose a rational interfacial engineering strategy employing p-type molecular doping to optimize device performance. By incorporating 2,3,5,6-tetrafluoro-7,7',8,8'-tetracyanodimethyl-p-benzoquinone (F4TCNQ) as a dopant in the poly(9,9-dioctylfluorene-co-N-(4-butylphenyl)diphenylamine) (TFB) HTL, we significantly enhance hole mobility from 3.96×10⁻⁶ to 1.13×10⁻⁴ cm²/(V·s) and adjust the highest occupied molecular orbital energy level from -5.40 to -5.56 eV, facilitating efficient hole carrier injection and transport. Additionally, perovskite films deposited on the doped HTL exhibit improved crystallinity and a reduced defect density from 3.47×10¹⁸ to 3.18×10¹⁷ cm⁻³. Owing to these synergistic improvements, the optimized blue PeLEDs achieve a maximum EQE of 4.57% with an emission peak at 484 nm, representing a 4.02-fold enhancement over the pristine device. This work highlights the effectiveness of molecular doping in tailoring interfacial properties and balancing charge transport for high-performance blue PeLEDs.
研究领域:
材料科学
·
光电子学
·
高分子科学
·
半导体器件
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Applied Materials Today
·
2024
·
IF 7.2
Guobo Huang,Siqi Huo,Jiahao Ren,Wei Chen,Haiqin Yang,Shenwei Xiao,Tianle Wang,Hong Peng,Pingan Song
The nanomaterials have been deeply explored as flame retardants for various polymeric materials due to their multifunctionality, but they often fail to significantly increase the limiting oxygen index (LOI) and vertical burning UL-94 rating, thus unable to meet industrial needs (LOI>27.0 % and UL-94 V-0 rating). Herein, we fabricated a cerium/phosphorus-doped g-C 3 N 4 (Ce/P-CN) nanohybrid as a multifunctional high-efficiency fire retardant for acrylonitrile–butadiene–styrene (ABS). The Ce/P-CN nanoflakes featured a strengthening effect towards ABS, 10 wt% of which increased the tensile strength of ABS/(Ce/P-CN) by 33.8 %. Meanwhile, the ABS/(Ce/P-CN) nanocomposites showed remarkably enhanced high-temperature stability and carbonization performances relative to virgin ABS. Ce/P-CN simultaneously improved the anti-ignition, fire retardancy and smoke suppression of ABS due to the barrier effect of g-C 3 N 4 nanoflakes and the catalytic carbonization effect of cerium and phosphorus. Notably, adding 10 wt% Ce/P-CN increased the LOI and UL-94 rating of ABS to 28.6 % and V-0, respectively, demonstrating its high flame-retardant efficiency. Thus, the high flame-retardant efficiency and multifunctionality enable Ce/P-CN to outperform previous flame retardants for ABS. This work offers a novel strategy for the development of high-efficiency g-C 3 N 4 nanoflakes, which endow ABS with improved mechanical robustness and fire retardancy and show broad industrial prospects.
研究领域:
材料科学
·
高分子化学
·
燃烧学
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Mingjun Sun,Kuan Ding,Yujie Lu,Xiaopeng She,Yi Chen,Mengqing Wang,Cheng Zou,Xiaoyu Liu,Yong Zhou
Of diverse NH 3 gas-detection strategies applied in the fields of individual healthcare and industrial production, chemiresistive gas sensors gain the most popularity owing to the superior merits of low cost, convenient signal processing and high sensitivity. However, severe challenges still exist such as elevated operation temperature (>200 °C), limited sensitivity and unsatisfactory selectivity especially under low-concentration and high-humidity conditions. To overcome these hindrances, a sensing layer of black phosphorus nanosheets (BP)-modified α-MoO 3 nanoflakes was prepared in this work. After subtle optimization of ingredient composition and operation temperature, the composite sensor S2 could recognize NH 3 gas with the concentration spanning from 0.4 to 25 ppm at 40 °C. In particular, a larger mean response (27 % vs. ∼ 2.3 %) with a response/recovery speed of 275/388 s toward 10 ppm NH 3 and lower detection of limit (LoD, 0.4 ppm vs. 10 ppm) was achieved with respect to pure BP counterpart. In addition, excellent repeatability, selectivity, long-term stability and humidity-tolerant features were demonstrated for Sensor S2 . The improved sensing performance after α-MoO 3 incorporation was primarily ascribed to abundant p-n heterojunctions, excellent conductivity of BP and hydrophilic MoO 3 that mitigated the water corrosion effect on susceptible BP nanosheets. This work offers an alternative strategy for sensitive and low-temperature NH 3 detection, and well cater for the demanding requirements of high sensitivity and low-power consumption in the field of novel gas sensors applicable in the future Internet of Things and exhaled breath-oriented medical diagnosis.
研究领域:
材料科学
·
化学传感
·
生物医学工程
✓ 已验证
DOI
高影响因子
DALTON TRANSACTIONS
·
2020
·Vol. 49
·期 14
·4476-4490
·
IF 4.174
Keyu Tao,Lian Wang,Yang Hai,Yun Gong
P–TiOn–VOm nanowires were grown on nickel foam (NF) via a one-pot hydrothermal method and by further vapor deposition/phosphorization method. It was found that low valence states of titanium oxide and deficient-oxygen coexist in P–TiOn–VOm/NF. Furthermore, (TiO1.25)3.07 (denoted as TiOn) and VO (denoted as VOm) possess similar structures and matched facets, and their epitaxial growth leads to the formation of TiOn/VOm heterostructure with a formation energy of −1.59 eV. P–TiOn–VOm/NF possesses good electron conductivity and electrons can be transferred from Ti to V centers, as evidenced by the DFT calculations and the XPS spectra. As a result, the specific capacity of P–TiOn–VOm/NF can reach 785 C g−1 at 1 A g−1 in the potential range of 0–0.55 V vs. Hg/HgO, which is much larger than those of VOm/NF, P–VOm/NF, and P–TiO2–VOm/NF. On the other hand, the TiOn/VOm heterostructure also favors the separation and transfer of photoinduced electrons and holes, and P–TiOn–VOm/NF exhibits visible-light-driven photoresponse. Under visible light illumination, the specific capacity of P–TiOn–VOm/NF is increased by 6.2% relative to that in the dark. Furthermore, the P–TiOn–VOm/NF//activated carbon (AC) asymmetric supercapacitor (ASC) shows an energy density of 37.2 W h kg−1 at a power density of 1 kW kg−1 and excellent cycling performance with 93.6% capacity retention after 10 000 cycles at 5 A g−1, which is comparable to and even superior to those of titanium oxides and vanadium oxides. A promising achievement has been proposed to improve the energy storage performance of P–TiOn–VOm through P-functionalization and O-deficiency in this work.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
IEEE SENSORS JOURNAL
·
2025
·
IF 4.5
Kaiyuan Lai,Yurong Liu,Ruohe Yao,Kuiwei Geng
High sensitivity, highly integrated, low-power consumption, and highly flexible pressure sensors are essential for applications in fields such as electronic skin, smart robotics, and human-AI interaction. In this study, a highly sensitive integrated pressure sensor was prepared on a flexible PI substrate which includes a thin-film transistors (TFTs)-based amplifier with a P(VDF-TrFE)/BaTiO3 piezoelectric composite sensing unit. The sensing unit is connected to the extended gate of one In-doped ZnO (IZO) TFT, while the other IZO TFT serves as a load resistor for the amplifier. The integrated sensor can directly convert an external pressure applied to P(VDF-TrFE)/BaTiO3 composite into a voltage (or current) signal and amplify it without an additional charge amplifier. The results indicate the integrated sensor exhibits a low power consumption of 100 ~ 200 μW, a high sensitivity of 0.64 V/kPa, and a rapid response time of 20 ms. The integrated sensor can be used to detect human movements and vital signs in real time, such as finger bending and stretching, pulse, and vocal cord vibrations, suggesting that the integrated sensor has a great deal of promise for application in wearable health monitoring systems.
研究领域:
电子皮肤
·
智能机器人
·
人机交互
·
健康监测系统
✓ 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）