MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Wen-Juan Wang,Kai-Qi Liu,Jia-Lou Chen,Gang Wang,Feng Li,Yu-Qin Wang,Fen-Ying Kong,Wei Wang,Zhong-Xia Wang
Cancer is currently one of the deadliest diseases in the world. As one of the most common anti-cancer drugs, monitoring the amount of doxorubicin (Dox) with high sensitivity in serum can not only guide the dosage of Dox and minimize their toxicity, but also guarantee the effectiveness of treatment and the safety of patient’s life. Here, a green luminescent probe of the sulfur-enrichment, nitrogen-deficiency carbon nanodots (SCDs) was synthesized by melamine and 3-mercaptopropionic acid as nitrogen-sulfur-oxygen sources. The optical properties and surface functional groups of the SCDs have tremendously changed owing to the enrichment of the sulfur atoms. Interestingly, the SCDs luminescence can be suppressed by Dox through effective inner filter effect, which was permitted to construct high sensing platform for Dox determination. With the help of this mechanism, a wide linear range from 0.1 μM to 300 μM with a low limit of detection of 78.4 nM by utilizing SCDs-based constructed sensing platform were obtained. More importantly, this sensing platform has been successfully used to detect Dox in serum samples, and achieved satisfactory results with the recoveries between 97.7 and 104.2 %. This study conduces to the design of surface sulfur-containing carbon dots and broaden the utilization of functional SCDs in anthraquinone drugs detection.
研究领域:
生物医学
·
药物分析
·
纳米材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POROUS MATERIALS
·
2016
·Vol. 23
·期 6
·1537-1545
·
IF 1.385
Ge Chunhua,Du Yan,Wang Rui,Xue Lili,Wu Zhongshuai,Xing Tianzhu,Ji Xiaochun,Ma Lin,Zhang Xiangdong
A new composite (CCSs/MOFs) of carboxyl-rich carbon spheres (CCSs) and copper-based metal–organic frameworks (MOFs) was for the first time prepared. The CCSs/MOFs composite was synthesized by the coordinated growth of high surface area and porous MOFs, [Cu 3 (BTC) 2 (H 2 O)] n (HKUST-1), on the surface of the functionalized CCSs obtained through a one-step hydrothermal carbonization of glucose with acrylic acid at 180 °C for 24 h. The resulting composites showed a core/shell structure with a tunable diameter arranging from 0.6 to 3.0 μm, and possessed high specific surface area of 495 m 2 /g and nanoporous structures derived from MOFs. Further, the catalytic oxidation of benzylic alcohol to benzaldehyde as its application was studied.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
AICHE JOURNAL
·
2025
·
IF 4
Weilin Li,Rui Ma,Zheyang Liu,Zhehao Liu,Min Zhou,Baker Rhimi,Qiang Ma,Zhifeng Jiang,Weidong Shi
The insufficient light absorption capacity and severe photogenerated carrier recombination limit the overall efficiency of photocatalysts. Herein, we designed carbon-rich poly(heptazine imide) (PHI) by copolymerization of melamine and 2,4,6-triamine-pyrimidine with KCl/KI. This material has been demonstrated to markedly enhance the utilization rate of photons while simultaneously optimizing the charge efficiency of photogenerated electrons. The carbon-rich PHI showed a higher CO₂ reduction efficiency than the PHI, with a CO generation rate reaching 46.6 μmol g −1 h −1 . To overcome the obstacle of slow mass transfer, a flow reactor was designed in-house. The CO yield on carbon-rich PHI in the home-built flow reactor was found to be as high as 153 μmol g −1 h −1 , which is 3.3 times that observed in the batch reactor. The findings of the experimental study are in alignment with the results of the theoretical modeling, which was based on the finite volume analysis method.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Zhixin Liu,Yongdi Liu,Xianbo Sun,Haodong Ji,Wen Liu,Zhengqing Cai
A novel Z-scheme Ag/AgVO 3 /carbon-rich g-C 3 N 4 heterojunction with excellent solar-light-driven photocatalytic activity was constructed via a facile hydrothermal-calcining method. The Ag/AgVO 3 /carbon-rich g-C 3 N 4 composites displayed superior performance for the photocatalytic degradation of sulfamethiadiazole (SFZ) under solar irradiation. The optimal composite with a 10 wt% Ag/AgVO 3 content showed the highest photocatalytic activity, its degradation rate constant ( k ) for SFZ degradation was ∼13 and 30 times than that of carbon-rich g-C 3 N 4 (CCN) and Ag/AgVO 3 , respectively. Furthermore, •O 2 – was identified as the most crucial reactive species in the Z-scheme photocatalysis system. The greatly improved photocatalytic activities are derived from the built-in electric field (BIEF) of CCN and efficient Z-scheme charge transfer with Ag nanoparticles as charge transmission-bridge. The possible photocatalytic degradation mechanism and pathway over Ag/AgVO 3 /carbon-rich g-C 3 N 4 were proposed based on LC-MS analysis and density functional theory (DFT) calculation, and the toxicity of intermediates was evaluated by Quantitative structure–activity relationship (QSAR) based prediction. In summary, this work provides new insight into constructing highly efficient Z-scheme photocatalyst, which is promising for implementation in surface water remediation.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
NANOTECHNOLOGY
·
2018
·Vol. 30
·期 7
·075402
·
IF 3.404
Lulu Chen,Wenxiu Yang,Xiangjian Liu,Ling Long,Dandan Li,Jianbo Jia
The design of high-efficient and durable bi-functional oxygen electrocatalysts is still a great challenge. In this work, novel Co9S8 nanoparticles/N,S-codoped defect-rich carbon nanotubes (Co9S8/N,S-CNTs) were fabricated by an ingenious template method. CdS nanowires, as a sacrificial template, can be removed simultaneously during the carbonization process without additional post-treatments. The large BET surface area (661.2 m2 g−1) and pore volume (1.49 cm3 g−1) of Co9S8/N,S-CNTs could largely enhance the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) activities by facilitating the mass transportation and exposing more active sites. The abundant defects produced by the evaporation of Cd and S doping could provide more active sites for ORR and OER. Coupling with Co9S8, Co9S8/N,S-CNTs possesses more defects in the carbon skeleton, better electron conductivity, and larger effective electrochemical area. Co9S8/N,S-CNTs not only performs excellent ORR activity with a half-wave potential of 0.821 V but also owns RuO2-like OER activity in alkaline solution. The potential difference (ΔE) between ORR and OER is as low as 0.78 V in 0.10 M KOH. The excellent bi-functional performance enables the potential to be utilized in fuel cells and metal-air batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Small
·
2021
·Vol. 17
·期 41
·2102300
·
IF 13.281
Menglong Sun,Sining Yun,Jing Shi,Yongwei Zhang,Asim Arshad,Jiaoe Dang,Lishan Zhang,Xi Wang,Zhuolei Liu
Nitrogen-coordinated metal-modified carbon is regarded as a novel frontier electrocatalyst in energy conversion devices. However, the construction of intrinsic defects in a carbon matrix remains a great challenge. Herein, N-coordinated magnetic metal (Fe, Co) modified porous carbon dodecahedrons (Fe/Co-NPCD) with a large surface area, rich intrinsic defects, and evenly distributed metal-N x species are successfully synthesized via the rational design of iron precursor and the bimetallic-organic frameworks. Because of a synergistic effect between N-coordinated dual magnetic metal active sites, the Fe/Co-NPCD exhibits exceptional electrocatalytic activity and electrochemical stability. A solar cell fabricates with the Fe/Co-NPCD yields an impressive power conversion efficiency of 8.35% in dye-sensitized solar cells, superior to that of mono-metal-doped carbon-based cells and conventional Pt-based cells. Furthermore, density functional theory calculations illustrate that Fe, Co, and N doping are in favor of improving the adsorption capacity of the catalyst for I 3 − species by optimizing the magnetic momentum between the magnetic metal atoms, thereby upgrading its catalytic activity. This work develops a general strategy for synthesizing a high-performance defect-rich carbon-based catalyst, and offers valuable insight into the role of magnetic metals in catalysis, which can be used to guide the design of high-performance catalysts in the energy field.
研究领域:
材料科学
·
能源科学
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2016
·
IF 3.782
Rui Zhao,Xiang Li,Bolun Sun,He Ji,Ce Wang
An environmentally benign and efficient hydrothermal carbonization method is widely applied for the preparation of carbon-based adsorbents. However, the adsorption capacity toward anionic species would be influenced due to the negatively charged surface of the traditional hydrothermal carbonaceous materials ; moreover most of the carbonaceous materials were in the form of powder which restricted the practical applications. Herein, amino-rich hydrothermal carbon-coated electrospun polyacrylonitrile fiber (PAN@NC) adsorbents were obtained through one-step hydrothermal carbonization approach assisted by diethylenetriamine using polyacrylonitrile (PAN) fibers as the templates, which showed highly efficient adsorption for anionic pollutants. The PAN@NC fibers were characterized in detail to confirm their structures and composition . The flexible and robust PAN@NC fiber membrane exhibited high adsorption capacity and good regeneration and recycling ability toward the anionic metal ion Cr(VI) and herbicide 2,4-dichlorophenoxyacetic acid (2,4-D). According to the Langmuir model, the adsorption behaviors showed monolayer adsorption capacities of 290.70 mg/g and 164.47 mg/g for Cr(VI) and 2,4- D , respectively, which were higher than that of many other adsorbents. Recycling study indicated that the removal efficiencies for both pollutants retained above 90% after five cycles. These findings demonstrate that PAN@NC fibers are promising adsorbents for the removal of anionic pollutants from wastewater solutions.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry B
·
2018
·Vol. 6
·期 12
·1771-1781
·
IF 4.776
Zhong-Xia Wang,Xian-He Yu,Feng Li,Fen-Ying Kong,Wei-Xin Lv,Wei Wang
The shape of nanoparticles is decisive for their intrinsic physicochemical properties, as well as for the anisotropic behavior of individual particles in many instances. Herein, boron-doped nitrogen-rich carbon rugby ball-like nanodots (BNCRDs) have been synthesized by a heterophase polymerization route at a vital mass ratio of phenylboronic acid and uric acid in the precursor solution. Unexpectedly, the as-prepared BNCRDs showed stable dispersions of ellipsoidal carbonaceous polymer nanodots (rugby ball-like structures that are approximately 150 nm in length) as novel carbon dot derivatives. The anisotropic BNCRDs are water-soluble compounds that have highly enhanced photoluminescence (PL), which is accompanied by a large red shift of the emission peak upon the addition of Hg2+ and is nearly quenched upon the addition of Cu2+. This is due to the chelation-enhanced fluorescence property of the BNCRDs following Hg2+ complexation with sterically efficient heteroaromatics in the BNCRDs and the chelation enhancement quenching effect of the BNCRDs following Cu2+ complexation with the N/O donor atoms of the surface of the BNCRDs, respectively. Importantly, the BNCRD PL, which is changed by Hg2+ and Cu2+, exhibits high selectivity and sensitivity for the pyrophosphate ion (PPi) in the ranges 50 nM–280 μM and 10 nM–100 μM through a photoluminescent reset process, respectively, and could be attributed to the effective coordination/chelation interactions between Hg2+/Cu2+ and the plentiful oxygen groups of PPi. These results indicate that anisotropic BNCRDs can act not only as a ratiometric sensor for Hg2+ but also as a dual-mode PPi-selective sensor via ratiometric displacement and a competitive mechanism. With the broad diversity in the molecular backbone of the carbon dots via rich chemical routes, anisotropic BNCRDs have been developed with unique structural, electrical, and attractive functions, which greatly expands the research horizon of carbon-based composites.
研究领域:
纳米技术
·
分析化学
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Applications in Energy and Combustion Science
·
2021
·
IF 0
Chao Li,Yifan Sun,Lijun Zhang,Qingyang Li,Shu Zhang,Xun Hu
Coal and biomass are two important carbonaceous feedstock and their co-pyrolysis has been proven to modify the fuel properties of resulting oil and char. Nevertheless, how do the volatiles from coal impact the property of biochar from biomass is largely unknown. In this study, sequential pyrolysis of coal in upper bed with sawdust, cellulose, or lignin in lower bed at 600 °C was investigated. The volatiles from the pyrolysis of coal did react with the biochar from biomass, which promoted cracking reactions and resulted in the formation of more gases at expense of biochar. The coal-derived volatiles enhanced the cracking or gasification of sugar derivatives and impacted the evolution of aromatic phenols. Furthermore, coal-derived volatiles also promoted the cracking or deoxygenation of oxygen-containing functionalities, making the biochar carbon-rich with higher crystallinity but reduced the thermal stability. Additionally, the hydrophilicity and the evolution of functionalities on surface biochar was also significantly affected by the volatiles from pyrolysis of coal.
研究领域:
能源与燃料
·
化学工程
·
环境科学
✓ 已验证
DOI
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2018
·
IF 11.698
Rong Wang,Bowen Zhang,Zichen Liang,Yixin He,Zonghan Wang,Xingfa Ma,Xiaolin Yao,Jing Sun,Jianlong Wang
Despite the development of various drugs and materials, bacterial infections remain a serious problem for wound healing. Most current materials cannot simultaneously provide antibacterial effects, reusability, and biocompatibility, and participate in stimulating cellular behaviour to promote bacterial wound healing. Herein, multifunctional nitrogen-rich carbon-coated bismuth/cobalt nanoparticles ( [email protected] @CN) with foam-like structures synthesised by a simple two-step method showed remarkably improved magnetic and photoconversion effects. These are promising candidates as photodynamic inactivation materials. Within 20 min, >99.999% Staphylococcus aureus ( S. aureus ) were killed by the composite due to its strong ability to generate reactive oxygen species (ROS) and thermal energy under simulated visible light. Additionally, [email protected] @CN also displayed high stability: its antibacterial efficiency underwent rapid photodynamic inactivation over five cycles. In vitro results revealed that ROS and photothermal conversion of materials can seriously damage bacterial cell membranes and inhibit the virulence factors produced by bacteria, which ultimately leads to the death of S. aureus . Moreover, in vivo assessment of wound healing showed that the material was very effective for bacteria-accompanied wound healing and did not cause detectable damage to the major organs. Therefore, the [email protected] @CN composite has great potential as a safe multimodal treatment system for active photodynamic inactivation and wound healing.
研究领域:
材料科学
·
纳米技术
·
生物医学工程
·
微生物学
·
伤口愈合
✓ 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）