JOURNAL OF MEMBRANE SCIENCE
·
2021
·
IF 8.742
Yunhao Li,Shuhao Wang,Hengyu Li,Guodong Kang,Yang Sun,Haijun Yu,Yan Jin,Yiming Cao
The enhancement in selectivity of nanofiltration (NF) membranes is of great significance for extending the application areas and improving the process economy, especially for the separation of monovalent/divalent ions. The characteristics of moderately increased pore size, fewer nonselective defects and a more uniform structure are conducive to NF membrane exhibiting higher rejection of divalent ions but lower rejection of monovalent ions. Nonylphenol polyoxyethylene ether (NP-10) was introduced in interfacial polymerization process in this study to optimize the microstructure and surface properties of polyamide (PA) layer to manufacture highly selective NF membranes. The hydrophobic benzene ring and aliphatic chain in NP-10 could form a local space that restricted the interfacial polymerization reaction on the side of the oil phase, thereby appropriately increasing the pore size of the PA layer. It was advantageous to the permeation of water molecules and monovalent ions with a smaller radius. The long hydrophilic oxyethylene group as a guide could facilitate the uniform diffusion of the monomer to the water/hexane interface. NP-10 as an amphiphilic substance would form a self-assembled network at the water/hexane interface, which was expected to optimize the distribution of aqueous amine monomers at the phase interface . Meanwhile, introducing NP-10 can form a stable interface and reduce the interface disturbance, thus inhibiting the formation of non-selective macropores (or “defects”) in PA layer, which could improve the separation selectivity of monovalent/divalent ions. In addition, the hydrophilicity and electronegativity were also enhanced. The results showed that the MWCO of NF membrane increased from 210.1 Da (TFC-0) to 269.6 Da (TFC-0.25), and the average pore radius increased from 0.248 nm to 0.276 nm. The water flux of optimized membrane was doubled compared to the control membrane. Most important, the optimized exhibited higher rejection of divalent Na 2 SO 4 (from 98.07% to 99.43%), and meanwhile lower rejection of monovalent NaCl (from 54.07% to 27.52%). NaCl/Na 2 SO 4 separation factor reached up to 130.53, which was about four times of TFC-0 membrane.
研究领域:
材料科学
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环境工程
·
化学工程
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DOI
高影响因子
Journal of Materials Chemistry C
·
2019
·Vol. 7
·期 48
·15259-15268
·
IF 6.641
Lingling Zhang,Xiaodie Li,Weihua Liu,Rui Hao,Hongrui Jia,Yanzhu Dai,Muhammad Usman Amin,Hongjun You,Tao Li,Jixiang Fang
The fabrication of flexible surface-enhanced Raman scattering (SERS) substrates with high sensitivity and signal consistency in a simple and low-cost way have been a crucial and urgent challenge. In this study, we demonstrated a flexible transparent three-dimensional (3D) ordered micro-hemisphere (MHS) array PDMS film with self-assembled Au nanoparticles (NPs) (an Au NP-MHS array film) as a surface-enhanced Raman scattering (SERS) platform for the in situ detection of pesticides in food. According to the finite difference time domain (FDTD) simulation results, the Au NP-MHS array film possesses high-density and ordered “hot spots” to enhance the electromagnetic field (EMF), so that the sensitivity and signal consistency are effectively improved. The optimized Au NP-MHS array film exhibits fascinating SERS sensitivity, with a limitation of crystal violet (CV) reaching 10−12 M as well as excellent consistency (RSD = 4.89% at 10−8 M). For in situ pesticide detection in fruits, this flexible film was pasted on the surfaces of tomatoes. The carbendazol and parathion were directly detected, and distinctly identified even at a low concentration (10−8 M). The flexible Au NP-MHS array film could be a potential candidate for the SERS substrate applied in the rapid and true inspection.
研究领域:
材料科学
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分析化学
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食品科学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2022
·
IF 4.889
Kun Wang,Xun Zhu,Rong Chen,Dingding Ye,Yang Yang,Qiang Liao
In this work, Ag nanoparticles as surface plasmon catalysts were prepared on polydopamine microspheres via in-situ reduction for catalytic 4-nitrophenol to 4-aminophenol in the presence of sodium borohydride. The kinetics of catalytic reaction under light and dark conditions was compared. It was found that the reaction rate constant under light condition was increased by 53.6% due to the surface plasmon resonance effect. The transition state theory was used to reveal the enhanced mechanism of catalytic conversion of 4-nitrophenol under light condition. It is demonstrated that the light-excited high-energy electrons are responsible for the shift of the adsorbed reactants to the excited state with higher potential energy, lowering the apparent activation energy from 47.2 kJ/mol to 32.6 kJ/mol and thereby enhancing the conversion of 4-nitrophenol to 4-aminophenol. This study offers a deep insight into the contribution of surface plasmon resonance to catalytic conversion of 4-nitrophenol by surface plasmon catalysts.
研究领域:
化学
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材料科学
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光催化
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
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IF 8.2
Xuewen Si,Hongyu Zhu,Zhenhai Yang,Hang Wei,Ben Chen,Rui Wang,Ruchao Bao,Jinxin Gu,Yaohui Zhan
The imperatives of low energy consumption and environmental sustainability have intensified the demand for passive radiative cooling systems that operate without electrical input. However, the inherent cooling effect under low temperatures significantly hampers their energy-saving potential. Besides, the inflexibility of conventional designs restricts their application to complex or nonplanar surfaces. To surmount these challenges, we propose a flexible smart radiative cooler (FSRC) that synergistically integrates a solar reflective layer (poly-4-methylpentene, TPX) with a phase-change layer (VO2 NPs@TPX). This novel architecture empowers the FSRC with spectrally self-adaptive reflectance and emission capabilities and dynamic response to temperature fluctuations. Simulation results highlight the FSRC’s remarkable energy management capabilities, characterized by minimal solar absorptance (0.13) and high infrared emissivity tunability (0.37). Outdoor field tests and building energy consumption simulations further validate the practical feasibility and efficacy of FSRC. This work not only offers a spectral decoupling strategy for realizing radiative cooling but also presents a promising device architecture and alternative technological solution that enables the evolution from static to dynamic photothermal management.
研究领域:
材料科学
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能源技术
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环境科学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2024
·Vol. 35
·期 1
·1-11
·
IF 2.8
Changshi Hao,Yiding Wang,Hongpeng Wu,Shaojing Duan,Bo Liu,Luting Yan
We successfully developed a GH-PP-Pt/GCE electrode by compounding graphene hydrogel (GH) with poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS), and in situ electrodeposition of Pt nanoparticles. The experimental results prove that the performance of GH-PP-Pt/GCE to trace copper ions significantly improved, the sensitivity reaches 45.673 µA/µmol L −1 , the limit of detection is as low as 9.9 nmol L −1 , and the linear range is 0.08–10 µmol L −1 . Its detection ability is at a relatively high level among the existing Cu 2+ electrochemical detection sensors, and the repeatability, stability, and anti-interference are good.
研究领域:
分析化学
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材料科学
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电化学传感器
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产品关联
DOI
高影响因子
Environmental Science-Nano
·
2021
·Vol. 9
·期 1
·349-360
·
IF 8.131
Cailiang Yue,Changqing Zhu,Wenting Zheng,Jinli Qiu,Zhiling Du,Chen Ling,Fu-Qiang Liu
Highly efficient mineralization of refractory organic pollutants is an admittedly difficult problem for most photocatalytic processes. Herein, a hierarchical type-II heterojunction Bi2MoO6/Bi/BiOBr-x (BMO/Bi/BOB-x) was successfully fabricated via a one-pot solvothermal method. The optimal BMO/Bi/BOB-2 exhibited an ∼80% mineralization ratio of ciprofloxacin under simulated solar irradiation, outperforming most reported photocatalysts. ˙OH was demonstrated to be the dominant reactive species. The ˙OH production capacity of BMO/Bi/BOB-2 increased by 76.2% compared with that of BMO/BOB, highlighting the key role of Bi nanoparticles (Bi NPs). Bi NPs not only induced a strong localized surface plasmon resonance effect to enhance the utilization of visible light, but also acted as an electron mediator to accelerate the separation of e−/h+ pairs. Due to the specific redox potential, the separated h+ and e− could activate H2O and O2 to produce ˙OH synchronously. Overall, this work provided a valuable strategy to design a plasmonic Bi NP-enhanced type-II heterojunction for the efficient treatment of refractory organic wastewater.
研究领域:
环境科学
·
材料科学
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Libo Sun,Qingtai Xie,Heshun Jing,Xueqing Liu,Lijun Zhao,Xun Sun,Baorong Duan,Caixia Qi,Huijuan Su
Here, Au/polydopamine (Au/PDA) catalysts were prepared by gold sol adsorption (Au/PDA(Sol)), PDA in situ reduction (Au/PDA(PDA reduction)) and DA in situ reduction (Au/PDA(DA reduction)). The factors that influence the performance of Au-PDA on the reduction of 4-nitrophenol (4-NP), were systematically studied for the first time. The catalytic performance of Au/PDA(Sol) is the best because of the uniform and small size of Au nanoparticles (NPs) (3.2 ± 0.7 nm), with a turn over frequency (TOF) of 10125 h −1 , a mass-normalized rate constant ( k’ ) of 33360 min -1 g Au -1 and an apparent activation energy (Ea) of 11.39 KJ/mol. It is confirmed that there are electronic interactions between Au and the catechol hydroxyl groups and imino groups of PDA. Some unreduced Au 3+ ions can be reduced in situ by NaBH 4 during the catalytic reaction, forming ultra small Au NPs and leading to a good initial catalytic activity, especially for Au/PDA(DA reduction). This work systematically studied the influencing factors in catalysis for Au/PDA, providing guidance for the preparation and industrial application of PDA supported noble metal catalysts.
研究领域:
化学
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材料科学
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催化反应
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产品关联
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2014
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IF 3.163
Xiaoping Liao,Caixiang Zhang,Linlin Yao,Jiale Li,Min Liu,Liang Xu,Mulindankaka Evalde
The reuse of wastewater for irrigation of agricultural land is a well established resources management practice but has the disadvantage of inputting various forms of contaminants into the terrestrial environment including nonylphenol (NP), a well known endocrine disrupting substance. To elucidate the environmental fate and transport of NP, the sorption behavior on sewage-irrigated soil was studied by batch experiment. It was found that sorption processes of NP on different sorbents (soil, humic acid (HA) and silica) could be expressed well using two compartment pseudo first-order model, where both surface and intra-particle diffusion were probable rate-controlling processes. Linear model could better express the sorption of NP on soil, black carbon (BC) and mineral (e.g., SiO 2 ) except HA than Freundlich model. The large value of distribution coefficients of normalized organic carbon (K oc ) on soils indicated that NP was limited to migrate to deep soil. The higher desorption partition coefficient of NP on soil showed enhanced hysteresis. According to the experimental data, the calculated thermodynamic parameters implied that the sorption reaction on sewage-irrigation was spontaneous, exothermic and entropy decreasing process. The amount of soil organic matter (SOM) dominated the sorption capacity, whereas the sorption behavior of NP on soil showed no significant correlation with ionic strength.
研究领域:
环境科学
·
生态学
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产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry B
·
2021
·Vol. 9
·期 32
·6406-6411
·
IF 6.331
Jie Yu,Xidong He,Zigui Wang,Sha Liu,Dengyuan Hao,Xiaoyuan Li,Yubin Huang
Platinum nanoparticles (Pt-NPs) have been developed for enhanced toxicity against tumor cells. However, the therapeutic effect of Pt-NPs was severely limited by the lack of cellular uptake of Pt-NPs and an oxidative environment. The combination of starvation therapy with Pt-NP based chemotherapy in a well-designed nano-system is expected to eliminate tumors. Therefore, GOx and Pt-NPs were coated with PLGA to obtain a functional nano-system (GOx–Pt-NS), which increased the cellular uptake of Pt-NPs. The accumulation of GOx–Pt-NS in tumors increased significantly via the enhanced permeability and retention (EPR) effect of nanoparticles. In addition, protection of the GOx–Pt-NS overcame several drawbacks of GOx such as poor stability, short in vivo half-life, immunogenicity, and systemic toxicity. Glucose oxidase (GOx) elevated the gluconic acid ROS levels in tumor cells, resulting in an acidic and oxidative environment. The acidic and oxidative environment enhanced the conversion of Pt2+via Pt NPs as well as DNA-binding ability. Finally, combining GOx based starvation therapy with Pt-NP based chemotherapy was expected to eliminate tumors more efficiently through a synergistic strategy.
研究领域:
肿瘤学
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纳米技术
·
药学
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产品关联
DOI
PubMed
高影响因子
Biosensors-Basel
·
2025
·Vol. 15
·期 11
·719
·
IF 5.6
Min-Fu Wu,Jing-Min Li,Sha Li,Min-Hua Wu,Ri-Sheng Chen,Yan-Can Liu,Jian-Nan Liu,Zhen-Lin Xu,Yi-Chao Yang,Jia-Dong Li,Qing-Yi Lei,Si-Min Zhan,Lin Luo
In this study, a colorimetric–photothermal dual-mode immunosensor based on Fe(Ⅲ)–gallic acid composite Prussian blue nanozyme (FGAN@PB NPs) was developed for the highly sensitive detection of malachite green (MG) in aquatic products. This strategy addresses the stability limitations associated with conventional horseradish peroxidase (HRP). In the colorimetric mode, the immunosensor exhibited an IC50of 7.56 ng/mL with a linear detection range of 2.21–25.84 ng/mL. In the photothermal mode, the linear range was 0.262–25.6 ng/mL, with a detection limit (LOD) of 0.31 ng/mL. The results from the two detection modes were mutually corroborative. Moreover, the detection of the proposed immunosensor was strongly correlated with the LC-MS/MS, offering a promising approach for the rapid on-site screening of MG and improving its applicability in complex sample matrices.
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产品关联
DOI
PubMed
高影响因子
OPTICAL MATERIALS
·
2024
·
IF 3.8
Jie Yang,Huimin Du,Yue Deng,Meifang Liu,Xingzuo Liu,Jun Yang,Shanshan Hu
Quantitative detection of permanganate ( MnO 4 ‐ ) and 4-nitrophenol (4-NP) is essential for environmental safety. Fluorescence detection technology is one of the most widely used detection technologies, which can be used for the detection of various anions and organic pollutants. In this paper, Ba 4 Lu 3 F 17 :Tb 3+ phosphors were successfully obtained by hydrothermal method. The morphology transition of Ba 4 Lu 3 F 17 crystal from nanoparticles through octahedron to hexagonal prism was realized in the pH range of 3–11. The best luminescent samples were obtained by changing the type of additives and the doping concentration of Tb 3+ ions. The obtained Ba 4 Lu 3 F 17 :Tb 3+ has high selectivity and anti-interference for MnO 4 ‐ and 4-NP detection, with the detection limits being 0.79 μM and 1.28 μM, respectively.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 114
·113298-113306
·
IF 3.289
Yan Yuan,Bo Peng,Hang Chi,Cong Li,Ren Liu,Xiaoya Liu
We report the preparation of poly(3,4-ethylenedioxythiophene) (PEDOT) nanoparticles (NPs) and graphene oxide (GO) ink-based layer-by-layer inkjet printing humidity sensors. Sulfonate polystyrene:PEDOT NPs (SPS:PEDOT NPs) were prepared with hard template SPS NPs and GO was synthesized through a modified Hummers' method. Next, the SPS:PEDOT NP/GO multilayer films were printed layer by layer, with one layer of GO followed by one layer of SPS:PEDOT NP ink on the flexible poly-ethylene terephthalate (PET) substrate by using a home inkjet printer. The morphology and structure of the SPS:PEDOT NPs and GO were characterized through TEM and Raman spectroscopy and those of the film were investigated through optical microscopy. SPS:PEDOT NP-reduced GO (SPS:PEDOT NP/RGO) composite sensors were obtained after thermal annealing. To assess their humidity sensing properties, the sensors were exposed to a wide range of relative humidities (RH 0–98%) at room temperature. The SPS:PEDOT NP/RGO PET-based sensor exhibited superior humidity sensing properties in a wide response range (0.13–68.46%), short response and recovery time (39 and 57 s, respectively), and excellent repeatability and flexibility. The resistance of sensors was almost invariable even after folding 200 times. Overall, the SPS:PEDOT NP/RGO PET-based sensors can be used as humidity sensors.
研究领域:
材料科学
·
传感器技术
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产品关联
DOI
高影响因子
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