JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2017
·
IF 4.233
Xian Li,Yue Yan,Yuanzhe Lin,Jian Jiao,Da Wang,Donghua Di,Ying Zhang,Tongying Jiang,Qinfu Zhao,Siling Wang
In this study, hollow mesoporous carbon nanoparticles (HMCN) and mesoporous carbon nanoparticles (MCN) were used as near-infrared region (NIR) nanomaterials and drug nanocarriers were prepared using different methods. A comparison between HMCN and MCN was performed with regard to the NIR-induced photothermal effect and drug loading efficiency. The results of NIR-induced photothermal effect test demonstrated that HMCN-COOH had a better photothermal conversion efficacy than MCN-COOH. Given the prominent photothermal effect of HMCN-COOH in vitro , the chemotherapeutic drug DOX was chosen as a model drug to further evaluate the drug loading efficiencies and NIR-triggered drug release behaviors of the nanocarriers. The drug loading efficiency of DOX/HMCN-COOH was found to be up to 76.9%, which was higher than that of DOX/MCN-COOH. In addition, the use of an 808 nm NIR laser markedly increased the release of DOX from both carbon carriers in pH 5.0 PBS and pH 7.4 PBS. Cellular photothermal tests involving A549 cells demonstrated that HMCN-COOH had a much higher photothermal efficacy than MCN-COOH. Cell viability experiments and flow cytometry were performed to evaluate the therapeutic effect of DOX/HMCN-COOH and the results obtained demonstrated that DOX/HMCN-COOH had a synergistic therapeutic effect in cancer treatment involving a combination of chemotherapy and photothermal therapy.
研究领域:
材料科学
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纳米技术
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癌症治疗
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药物递送系统
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产品关联
DOI
PubMed
高影响因子
Scientific Reports
·
2020
·Vol. 10
·期 1
·1-15
·
IF 3.998
Zhou Qiying,Chen Wenhua,Jiang Xia,Liu Hongying,Ma Shenggui,Wang Bangda
A novel nitrogen-containing graphitic mesoporous carbon was prepared through MnO-templated method using polyacrylonitrile (PAN) as both carbon and nitrogen sources, and MnCO 3 as both template and catalyst precursors. The effects of preparation conditions on the physicochemical properties of obtained samples were systematically investigated. The results showed that as the decrease of the weight ratios of PAN and MnO (2:1–1:4), the increase of carbonization temperature (700–900 °C) and pre-oxidation temperature (180–200 °C), the samples had higher specific surface area, mesopores volume and ratios, up to 507 m 2 /g, 0.824 cm 3 /g and 96.83%, respectively. Moreover, the prepared samples presented relatively high graphitic degree and nitrogen contents (~2.21%). The adsorption capacity for acid red 88 (AR88) was as high as 309 mg/g, which were dramatically affected by the mesoporous properties and C- and N-containing groups on the surface of prepared carbon. The rich graphic carbon and pyridine-N in mesoporous carbon generated π-π dispersion and electrostatic interaction with AR88, respectively, which jointly were responsible for the adsorption process. The results of the isotherm and kinetic studies indicated that the AR88 adsorption on mesoporous carbon could be well depicted using Langmuir model and pseudo-2 nd -order model.
研究领域:
材料科学
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环境科学
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DOI
PubMed
高影响因子
RSC Advances
·
2022
·Vol. 12
·期 21
·12997-13002
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IF 4.036
Yue Hou,Cheng-Jie Jiang,Ying Wang,Jing-Wei Zhu,Jia-Xing Lu,Huan Wang
The construction of an efficient catalyst for electrocatalytic reduction of CO2 to high value-added fuels has received extensive attention. Herein, nitrogen-doped mesoporous carbon (NMC) was used to support CuSb to prepare a series of materials for electrocatalytic reduction of CO2 to CH4. The catalytic activity of the composites was significantly improved compared with that of Cu/NMC. In addition, the Cu content also influenced the activity of electrocatalytic CO2 reduction reaction. Among the materials used, the CuSb/NMC-2 (Cu: 5.9 wt%, Sb: 0.49 wt%) catalyst exhibited the best performance for electrocatalytic CO2 reduction, and the faradaic efficiency of CH4 reached 35%, and the total faradaic efficiency of C1–C2 products reached 67%.
研究领域:
材料科学
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电化学
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催化反应
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产品关联
DOI
PubMed
高影响因子
Molecular Catalysis
·
2023
·
IF 4.6
Shide Wu,Yifei Zhang,Feng Yi,Dan Ping,Wan Li,Siyuan Cheng,Duwei Fan,Lifeng Han,Shiwen Wang,Junfeng Tian,Shaoming Fang
Developing an efficient and low-cost bifunctional electrocatalysts with superior activity for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) is highly required but still challenging. Herein, highly dispersed Ni species containing both Ni nanoparticles (NPs) and atomically dispersed Ni-N X on mesoporous nitrogen-doped carbon (Ni-N-C) were prepared by a facile one-pot pyrolysis strategy using dicyandiamide, citric acid and nickel acetylacetonate as raw materials. The confinement agent citric acid is quite requisite for dispersing Ni NPs and forming mesoporous graphene-like carbon substrate. Due to the uniform size of Ni NPs (3 nm) and the synergistic effect between Ni NPs and Ni-N X , and the unique mesoporous carbon structure, such Ni-N-C catalyst exhibits favorable activities for both HER and OER. The overpotentials for HER and OER are only 218 and 330 mV vs. RHE on glassy carbon to deliver a current density of 10 mA·cm −2 , respectively. Moreover, this catalyst also showed good operation durability with no obvious deactivation after long-term (18 h) potentiostatic electrolysis or continuous CV tests. This work could offer a new avenue for the design of bifunctional electrocatalysts in efficient water splitting.
研究领域:
材料科学
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能源化学
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产品关联
DOI
高影响因子
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
·
2015
·Vol. 15
·期 1
·628-632
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IF 1.556
Hu Xin,Miao Yuqing,Zhou Shilin,Liang Xiaocai
Here we report a Bi/mesoporous carbon modified glass carbon electrode (Bi-MC-GCE) for the detection of heavy metal ions Zn, Cd and Pb. Bi(NO3)3 was firstly entrapped into the holes of MCs by sonicating them together in solution. Then the dispersed mixture was pipetted
onto the surface of GCE and left to dry. Bi(NO3)3 in the holes of MCs was reduced to metallic Bi during the process of deposition for square wave stripping analysis. The obtained Bi-MC-GCE exhibits significantly enhanced sensitivity for Zn, Cd and Pb detection compared
to blank GCE, bismuth or MC alone modified GCE, which is attributed to the high specific surface area of MCs and the increased amount of entrapped bismuth as active sites for the deposition and stripping of heavy metal ions. A linearship is observed for the concentration of Zn, Cd, and Pb
from 10 to 110 ppb. The relative standard deviation was 3.7% for Zn, 3% for Cd and 8% for Pb at the 90 ppb level (n = 3). The suggested Bi-MC-GCE exhibits a potential application for real water sample analysis.
研究领域:
环境科学
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分析化学
✓ 已验证
DOI
PubMed
高影响因子
ACS ES&T Engineering
·
2022
·
IF 0
Ting Zhang,Zhelun Pan,Dinggui Song,Hong Huang,Jiang Yu,Yichan Wen,Junlin Lu,Zhenfeng Bian,Xufang Qian
The high reactivity of Fe(0) with Cr(VI) makes it the best choice for Cr(VI) removal. Interstitial compound Fe3C was produced during the carbothermic reduction of mesoporous phenolic resin/ferric ions to form Fe(0)/Fe3C nanoparticles embedded in mesoporous carbon (Fe(0)/Fe3C@MesoC). Fe3C accelerates the electrochemical corrosion process of α-Fe(0) in solution, and the positive/negative equipotential interface that is formed by iron–carbon (Fe–C) microelectrolysis of Fe(0)/Fe3C@MesoC induces the capture of Cr(VI) anions and Cr(III) cations as a result of this process. Cr(VI) was completely reduced to Cr(III) by the Fe(0)/Fe3C@MesoC catalyst with a high electron efficiency (40.5%) relative to nanosized zero-valent iron (1.9%) and Fe@MesoC (32.7%). Surface ferrous ions are the principal reactive species responsible for Cr(VI) reduction (at least 64%); Fe(0)/Fe3C and undetectable surface ferrous ions account for a small part of Cr(VI) reduction (around 28%), and only 8% of Cr(VI) ions are reduced by active hydrogen (H*). The proposed structure of Fe(0)/Fe3C@MesoC provides new insight into iron–carbon material preparation and application in in situ chemical reduction.
研究领域:
环境科学
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材料科学
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DOI
Energy Technology
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2018
·Vol. 6
·期 11
·2273-2281
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IF 3.175
Peng Chen,Suhui Lu,Chao Yang,Zi He,Xuli Chen,Kunkun Guo
The molten salt activation containing different oxysalts are proposed to activate the ordered mesoporous carbons loading on graphene layers (OMC/G). The effects of different oxysalts activations on the structures of OMC/G are thoroughly investigated by scan electron microscopy (SEM), small angle X-ray scattering (SAXS), Raman spectroscopy and nitrogen adsorption-desorption at 77 K. The structures of these carboneous materials are related with the oxidizing nature of these oxysalts. By using weak oxysalt of K 2 CO 3 , the original structure of OMC/G is almost kept together with the appearance of a lot of micropores and mesopores. The electrochemical performances of OMC/G after different oxysalts activation are also studied for supercapacitor applications. OMC/G after weak oxysalt of K 2 CO 3 based electrode results in the highest specific capacitance up to 332.5 F g −1 at a current density of 1.0 A g −1 , which is higher than those after both KOH activation (276.8 F g −1 ) and the other three oxysalts activation. Moreover, OMC/G-K 2 CO 3 shows an excellent cycling stability with no capacitance loss over 5000 cycles. The molten salt activation would be potentially applied to activate the porous carbons for supercapacitor applications.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2019
·
IF 5.256
Chuyi Ni,Junlong Huang,Xintong Xie,Yueru Shi,Juan Zheng,Gangfeng Ouyang
Ordered mesoporous carbons (OMCs) are a kind of remarkable adsorbents in environment area due to high surface area, controllable pore size and superior stability. However, the inherent hydrophobicity and strong π-π interaction make OMCs have an advantage for the adsorption of nonpolar pollutants, leading to great demands for the development of new-type OMCs with outstanding adsorption efficiencies towards polar pollutants. The zirconium and nitrogen co-doped ordered mesoporous carbon (Zr/N-OMC) was obtained by directly carbonizing the composites of phenolic resin and UiO-66-NH 2 , with uniform mesopore structure, large surface area (583 m 2 g −1 ) and widely dispersed heteroatoms . Due to these prominent properties, the Zr/N-OMC was fabricated as high-performance solid phase microextraction coating. The results proved that the doping zirconium and nitrogen could act as active sites to interact with polar pollutants, resulting in fast adsorption rate and enhanced adsorption capacity. Therefore, the high-performance Zr/N-OMC-coated fiber was coupled with gas chromatography-mass spectrometry to establish sensitive analytical method for the detection of trace phenols from real water samples. This work would open up a new avenue for simple and efficient modification of OMC with enhanced adsorption performance to expand applications.
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
MOLECULES
·
2022
·Vol. 27
·期 15
·4954
·
IF 4.927
Chengqi Bao,Yan Lu,Jiawei Liu,Yansha Gao,Limin Lu,Shuwu Liu
In this work, β-cyclodextrin (β-CD)/mesoporous carbon (CMK-8) nanocomposite was synthesized and used as an electrochemical sensing platform for highly sensitive and selective detection of Cu2+. The morphology and structure of β-CD/CMK-8 were characterized by scanning electron microscope (SEM) and X-ray diffraction (XRD). In addition, the dates from electrochemical impedance spectroscopy (EIS) and Cyclic voltammetry (CV) demonstrated that the β-CD/CMK-8 possessed a fast electronic transfer rate and large effective surface area. Besides this, the β-CD/CMK-8 composite displayed high enrichment ability toward Cu2+. As a result of these impressive features, the β-CD/CMK-8 modified electrode provided a wide linear response ranging from 0.1 ng·L−1to 1.0 mg·L−1with a low detection limit of 0.3 ng·L−1. Furthermore, the repeatability, reproducibility and selectivity of β-CD/CMK-8 towards Cu2+were commendable. The sensor could be used to detect Cu2+in real samples. All in all, this work proposes a simple and sensitive method for Cu2+detection, which provides a reference for the subsequent detection of HMIs.Keywords:copper ion;β-cyclodextrin;mesoporous carbon;electrochemical sensor
研究领域:
分析化学
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材料科学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2021
·Vol. 56
·期 17
·10282-10292
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IF 4.22
Hussain Taimoor,Nie Pengfei,Hu Bin,Shang Xiaohong,Yang Jianmao,Liu Jianyun
Alkaline-earth metal-based MOF has many merits such as light weight, environmental friendliness and low cost, but it has rarely been used in energy storage and capacitive deionization (CDI). This paper presents a facile method for the fast synthesis of small-size magnesium formate MOF (Mg-MOF) under mild conditions by linker-free incubation in the presence of Mg(CH 3 COO) 2 ⋅ 4H 2 O and dimethylformamide. The formic acid was in situ formed as ligand to facilitate the formation of Mg-MOF. The effect of incubation time on the morphology of MOF crystals was investigated. The small and well-defined Mg-MOF particles with the size of ~ 18 nm were formed in 1 h incubation, characterized by scanning electron microscopy and X-ray diffraction. Following carbonization, the Mg-MOF-derived mesoporous carbon was obtained. N 2 -sorption isotherm confirmed the mesoporous structure. Cyclic voltammetry test indicated the good electric double-layer feature of the Mg-MOF-derived carbon electrode, and the impedance results showed the excellent conductivity. As a capacitor electrode material, it delivered the specific capacitances of 102 F/g by GCD (0.2 A/g). The Mg-MOF-derived carbon electrode was applied successfully for capacitive deionization (CDI) with a desalination capacity of 8.0 mg/g in a CDI device. A supper fast desalination rate of 1.1 mg/g/min was achieved due to the abundant mesoporous structure. The work provides a cost effective and environmentally friendly way for the synthesis of MOF-based carbon materials free of transition metal, and the prospects for CDI application have been demonstrated.
研究领域:
材料科学
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环境工程
✓ 已验证
DOI
高影响因子
RSC Advances
·
2017
·Vol. 7
·期 20
·11921-11928
·
IF 3.108
Shan Xue,Chaozhan Wang,Yinmao Wei
A magnetic mesoporous carbon material (Fe3O4@C) was fabricated by carbonizing polystyrene grafted polydopamine-coated magnetic nanoparticles. The chemical composition, morphology and magnetism of the mesoporous carbon materials were characterized. The as-prepared magnetic mesoporous carbon was employed for enrichment of chlorophenols from water samples coupled with high-performance liquid chromatography with UV detection (HPLC-UV). Various parameters affecting the enrichment were investigated. A good linearity was obtained in the range of 10–200 ng mL−1 for 2-CP, 4-CP and 2,4-DCP, and 5–200 ng mL−1 for 2,4,6-TCP. The recoveries of CPs were in the range of 84.2–120% with intra- and inter-relative standard deviations (RSD) lower than 11.0%. The proposed method is fast, convenient and environmentally friendly. The results revealed the suitability of Fe3O4@C nanoparticles as adsorbents for enrichment of CPs from environmental water samples.
研究领域:
环境科学
·
分析化学
✓ 已验证
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2025
·
IF 2.5
Yun Wang,Jiayang Wang,Zhiyang Zhang,Runsheng Xu,Shuang Wang
The reductive amination of biomass-derived furfural over non-noble metal catalysts represents a promising but challenging strategy for the sustainable synthesis of furfurylamine. Herein, we report mesoporous carbon supported CoZn bimetallic catalysts (CoxZny@MC) via a one-pot solvent evaporation induced self-assembly (EISA) method for high-efficiency reductive amination of furfural to furfurylamine with hydrous hydrazine (N2H4⋅H2O) as a nitrogen source. A complete conversion of furfural with a 97.5% yield of furfurylamine was achieved over bimetallic Co1Zn3@MC catalyst under mild conditions of 100 °C and 1.5 MPa H2 for 3 h. Furthermore, Co1Zn3@MC could be reused for at least five times with only a slight loss in activity. The excellent performance of the Co1Zn3@MC catalyst was mainly attributed to the introduction of moderate Zn species, which led to high dispersion of Co particles on the catalyst surface, as well as the abundant mesopores and high specific surface area of the catalyst. Moreover, a significant electron transfer from Zn species to Co centers occurs, which improves the inherent catalytic activity of the non-noble bimetallic catalyst by enhancing the electron density of Co particles.
研究领域:
催化化学
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材料科学
·
绿色化学
✓ 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）