NEW JOURNAL OF CHEMISTRY
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2018
·Vol. 42
·期 21
·17644-17651
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IF 3.201
Shaobo Li,Tao Zhu,Lichun Dong,Mingdong Dong
Heteroatom doping has been demonstrated to be an effective way to tune the properties of nanomaterials including chemical reactivity and electronic and optical performance. In this study, rGO/g-C3N4 and boron doped rGO/g-C3N4 (B-rGO/g-C3N4) nanocomposites were fabricated via a rapid plasma treatment method, and their photocatalytic performance under visible light radiation was examined. The results showed that the photocatalytic efficiency of B-rGO/g-C3N4 for rhodamine B degradation can be 50% higher than that of rGO/g-C3N4 at an optimum rGO loading of 5 wt%. XPS and FTIR analyses indicated the enhanced C–O–C covalent bonding between rGO and g-C3N4 in B-rGO/g-C3N4, and the optical characterization demonstrated that it could further improve the separation of the photo-generated chargers and narrow the bandgap of the nanocomposite. This work provides an idea that boron doping could be an effective way to promote the chemical interaction between different components in composite materials, which is important in designing and developing new functional nanomaterials.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
Molecular Catalysis
·
2025
·
IF 4.9
Weitao Wang,Shuang Yue,Huan Wang,Jiaqi Zhu,Zhen-Hong He,Zhao-Tie Liu
Selective oxidation of lignin-derived vanillyl alcohol to vanillin is a vital reaction due to the widely application of vanillin. From aspect of green catalysis and sustainability, metal-free based heterogeneous catalyst for the entitled reaction is promising. In the present work, Se doped boron carbonitride (Se-BCN) nanotubes catalyst was rationally prepared and employed as the metal-free catalyst for the entitled reaction. The conversion can achieve 94.4 % with the selectivity of 89.4 % at 120 °C for 4 h, which is higher than most reported metal-based catalytic system. The reasons for the enhanced activity and selectivity of Se doped BCN nanotubes catalyst were revealed from the kinetic investigation and adsorption of vanillyl alcohol and vanillin. Mechanism study reveals that radicals are involved in the entitled reaction.
研究领域:
化学催化
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绿色化学
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产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Pengxiang Qiu,Jiawei Zhu,Chenxi Zhang,Tao Liu,Hao Fang,Lidong Shen,Shuai Zhang
Photocatalytic sterilization is attracting attention because of its potential to prevent the dissemination of antimicrobial resistance.Here, a novel silver-doped boron (AgB) photocatalyst was synthesized through a facile photodeposition approach, which was comprehensively characterized and implemented in photocatalytic disinfection of antibiotic-resistant bacteria (ARB). Compared with boron without doping, AgB demonstrated superior photocatalytic disinfection activity (5.57-log reduction in 60 min) towards Escherichia coil K-12 under solar light irradiation. More importantly, no ARB regrowth after 48 h was observed after the treatment by AgB-assisted photocatalysis. This efficient and stable disinfection was achieved because the doped Ag serves as an electron mediator, facilitating rapid electron transfer and effective separation efficiency of electron-hole pairs. Moreover, the tight bonding between Ag and boron reduces the dissolution of silver ions and improves the catalytic stability. These two features jointly benefit the production of reactive species, and the trapping experiments suggested that holes ( h + ) and superoxide radicals (•O 2 − ) played dominant roles in bacterial inactivation.
研究领域:
环境科学
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微生物学
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材料科学
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产品关联
DOI
高影响因子
CHINESE JOURNAL OF CHEMICAL PHYSICS
·
2022
·Vol. 35
·期 2
·369-374
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IF 1.09
Huang Kai,Zhang Feng,Zhao Feng-Jiao,Yin Hong-Ming
Erbium doped borate glass is widely used in luminescent materials, the luminescence dynamics of erbium doped borate glass is of great significance for optimizing and improving the luminous efficiency. The 2% molar ratio erbium doped borate glass was synthesized by the traditional melt quenching method, and annealed at 260 °C below the borate glass transition temperature. The thermal performance parameters of borate glass undoped and doped with Er 3+ were measured by differential scanning calorimetry with 10 °C/min. The transient emission spectrum and decay kinetics curves were measured for the luminescence mechanism of erbium doped borate. Er 3+ ions have different lifetime when emitted at 556 nm with different excitation wavelengths, the excited state trap may exist in erbium doped borate glass.
研究领域:
材料科学
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光学
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发光材料
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DOI
高影响因子
JOURNAL OF LUMINESCENCE
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2023
·
IF 3.6
Li Wang,Fumin Lu,Xiaoman Li,Fangfang Hu,Hai Guo,Rongfei Wei
Luminescence glass is an inspiring scintillating material because of the unique merits including simple preparation process, mass production and low-cost. However, it is still a daunting challenge to explore the scintillating glass which can be applied in practical life. Herein, a novel Cu + doped borate glass scintillator was successfully fabricated under air atmosphere by introducing proper Si 3 N 4 in melting process. The resultant glass exhibits broadband luminescence under ultraviolet (UV) light or X-ray excitation. Through the low temperature thermal treatment, both luminescence induced by UV and X-ray can be significantly enhanced. The quantum efficiency reaches as high as 74.2%. And the sample endows superior thermal stability with the emission intensity at 573 K still maintaining 62.5% of that at 303 K. The X-ray excited luminescence is 37.8% of that of the commercial Bi 4 Ge 3 O 12 (BGO) crystal. Furthermore, the damaged sample even stimulated by high-energy X-ray can be restored to original level completely after heat treatment again. Besides, the sample presents outstanding optical thermometric performance based on the fluorescence decay lifetime. These findings confirm that the as-prepared Cu + doped borate glass is a promising candidate applied in the areas of scintillator and temperature sensor .
研究领域:
材料科学
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光学
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闪烁体技术
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温度传感
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产品关联
DOI
高影响因子
Bioactive Materials
·
2021
·
IF 14.593
Libin Pang,Renliang Zhao,Jing Chen,Jingxin Ding,Xiaochen Chen,Wenwen Chai,Xu Cui,Xiaolin Li,Deping Wang,Haobo Pan
Critical bone defects caused by extensive excision of malignant bone tumor and the probability of tumor recurrence due to residual tumor cells make malignant bone tumor treatment a major clinical challenge. The present therapeutic strategy concentrates on implanting bone substitutes for defect filling but suffers from failures in both enhancing bone regeneration and inhibiting the growth of tumor cells. Herein, Cu and Mn-doped borosilicate nanoparticles (BSNs) were developed for syncretic bone repairing and anti-tumor treatment, which can enhance bone regeneration through the osteogenic effects of Cu 2+ and Mn 3+ ions and meanwhile induce tumor cells apoptosis through the hydroxyl radicals produced by the Fenton-like reactions of Cu 2+ and Mn 3+ ions. In vitro study showed that both osteogenic differentiation of BMSCs and angiogenesis of endothelial cells were promoted by BSNs, and consistently the critical bone defects of rats were efficiently repaired by BSNs through in vivo evaluation. Meanwhile, BSNs could generate hydroxyl radicals through Fenton-like reactions in the simulated tumor microenvironment, promote the generation of intracellular reactive oxygen species, and eventually induce tumor cell apoptosis. Besides, subcutaneous tumors of mice were effectively inhibited by BSNs without causing toxic side effects to normal tissues and organs. Altogether, Cu and Mn-doped BSNs developed in this work performed dual functions of enhancing osteogenesis and angiogenesis for bone regeneration, and inhibiting tumor growth for chemodynamic therapy, thus holding a great potential for syncretic bone repairing and anti-tumor therapy.
研究领域:
生物材料
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纳米技术
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组织工程
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癌症治疗
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生物医学工程
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）