MOLECULES
·
2022
·Vol. 27
·期 21
·7617
·
IF 4.927
Xiaodong Fang,Xiangguo Wang,Ling Ouyang,Longcheng Zhang,Shengjun Sun,Yimei Liang,Yongsong Luo,Dongdong Zheng,Tairan Kang,Qian Liu,Feng Huo,Xuping Sun
The development of efficient electrochemical seawater splitting catalysts for large-scale hydrogen production is of great importance. In this work, we report an amorphous Co-Mo-B film on Ni foam (Co-Mo-B/NF) via a facile one-step electrodeposition process. Such amorphous Co-Mo-B/NF possesses superior activity with a small overpotential of 199 mV at 100 mA cm−2for a hydrogen evolution reaction in alkaline seawater. Notably, Co-Mo-B/NF also maintains excellent stability for at least 24 h under alkaline seawater electrolysis.Keywords:amorphous Co-Mo-B film;alkaline seawater electrolysis;hydrogen evolution reaction
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2021
·Vol. 9
·期 41
·14730-14739
·
IF 7.393
Shao Yan,Yanjie Liang,Jingwei Liu,Dongxun Chen,Shihai Miao,Jianqiang Bi,Kangning Sun
Inorganic luminescent materials that emit in the ultraviolet-B (UVB) region (280–320 nm) have gained considerable attention in recent years because of the growing demands for applications in photochemistry and photomedicine. However, most of the available UVB phosphors are photoluminescent, for which continuous external excitation is essential. This common but very inconvenient luminescence form hinders the further development of UVB luminescence technology. Here, we report the design and development of a series of Pr3+-doped garnet-based UVB persistent phosphors by combining conduction band engineering, the vacuum referred binding energy (VRBE) diagram and persistent energy transfer control. The developed UVB persistent phosphors can not only be charged using a standard 254 nm UV lamp but also natural sunlight, leading to an intense and long-lasting UVB afterglow of more than 60 h. Besides, the persistent luminescence properties and trap charging and detrapping processes are comprehensively investigated using persistent luminescence excitation spectra and thermoluminescence experiments to uncover the possible luminescence mechanism in these phosphors. More importantly, the unique UVB persistent light emission from these garnet phosphors can be clearly imaged and recorded using a UVB camera in a bright indoor-lighting environment because of the zero-background noise from indoor ambient light, indicating that these UVB persistent phosphors have important application potential for optical tagging and optical data storage in a bright environment.
研究领域:
无机材料科学
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光物理学
·
生物医学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2022
·
IF 6.364
Yang Yang,Yifan Zhai,Huaicheng Xiang,Jie Li,Ying Tang,Liang Fang
Herein two cubic garnet ceramics Ca 3 TiBGe 3 O 12 (B = Mg, Zn) were prepared with optimal sintering temperatures of 1300 ℃ and 1200 ℃, respectively. Both ceramics exhibited promising microwave dielectric properties as well as rather low coefficient of thermal expansion ( α L ) of ε r = 11.95, Q×f = 83,000 GHz, τ f = −34.1 ppm/℃ and α L = 3.9 ppm/℃ for Ca 3 TiMgGe 3 O 12 , and ε r = 11.80, Q×f = 79,000 GHz, τ f = −42.9 ppm/℃ and α L = 4.0 ppm/℃ for Ca 3 TiZnGe 3 O 12 . Bond valence calculation reveals that Ca 2+ at the A-site is slightly compressed, Ge 4+ at C-site is rattling, and compressed Mg 2+ /Zn 2+ coexists with rattling Ti 4+ in the B-site. The large positive deviations (17.22% for Ca 3 TiMgGe 3 O 12 and 10.90% for Ca 3 TiZnGe 3 O 12 ) between the porosity corrected ε r (Corr) (12.32 and 12.41) and calculated ε r (C-M) (10.51 and 11.19) by the C-M equation were observed, which might be attributed to the combination of rattling effects in B-site and C-site. The relatively stronger rattling effect in Ca 3 TiMgGe 3 O 12 leads to a higher ε r and a τ f closer to zero than those of Ca 3 TiZnGe 3 O 12 . Besides, the Q×f values of Ca 3 TiBGe 3 O 12 (B = Mg, Zn) ceramics are mainly affected by relative density, packing fraction, and Raman mode (A 1 g ).
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2022
·Vol. 57
·期 13
·6900-6913
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IF 4.682
Yan Yuanjiu,Wang Ruoheng,Maimaitituersun Mieralimu,Sun Huajun,Liu Xiaofang
BiFeO 3 nanoflakes (BFO NFs) were synthesized via a facile hydrothermal route. The crystal structure, morphology, specific surface area and optical properties of the flakes were characterized by X-Ray Diffraction (XRD), Brunner–Emmet–Teller measurements (BET) and UV–vis Diffuse Reflectance Spectrum (UV–vis DRS). The results showed that the thickness and diameter of BFO NFs are 100–150 nm and 1.0–1.2 μm, respectively. Moreover, the results of UV–vis DRS indicated that BFO NFs exhibits good response to the visible light and the bandgap was calculated to be 2.2 eV according to the Kubelka–Munk theory. The photo-Fenton performance of BFO NFs was obviously enhanced due to the piezoelectric effect for the degradation efficiency of Rhodamine B (Rh B) (10 mg L −1 ) within 60 min and greatly elevated from 72 to 97%. The intermediate active species of ·O 2− and ·OH were detected by radical capture experiments and Electron Spin Resonance (ESR). The possible catalytic mechanism was proposed based on the above experiments results. In previous researches about photo-Fenton reaction, the piezoelectric properties of BFO NFs were rarely mentioned. This study represents a potential approach toward waste water treatment.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
FOOD RESEARCH INTERNATIONAL
·
2017
·
IF 3.086
Yinzhou Hu,Weisu Huang,Maiquan Li,Mengmeng Wang,Yajing Zhao,Tao Xu,Liuquan Zhang,Baiyi Lu,Yan He
This study aimed to investigate the effect of metal ions on the degradation of phytosterols in oils. The oil was heated at 180 °C for 1 h with/without addition of Fe 3 + , Fe 2 + , Cu 2 + , Mn 2 + , Zn 2 + , Na + , Al 3 + and Mg 2 + . Variations of β-sitosterol, stigmasterol , campesterol , brassicasterol and their degradation products were confirmed by the GC–MS analysis. In general, the increase of the metal ion concentration resulted in more phytosterol degradation, and the ability of metal ions following decreasing order: Fe 3 + > Fe 2 + > Mn 2 + ≥ Cu 2 + ≥ Zn 2 + > Na + ≥ Mg 2 + > Al 3 + . Metal ions significantly induced phytosterol autoxidation on C5, C6 and C7 on Ring B of steroid nucleus at even a low concentration, and induced dehydration on the C3 hydroxyl to form dienes and trienes at high concentration. The metal ions in oils are accounted for increasing phytosterol degradation, which decreases food nutritional quality and gives rise to the formation of undesirable compounds.
研究领域:
食品科学
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生物化学
✓ 已验证
DOI
高影响因子
Journal of Energy Chemistry
·
2019
·
IF 5.162
Jun Chen,F. Xu,L. Sun,Kexiang Zhang,Yongpeng Xia,Xiaolei Guo,Huanzhi Zhang,Fang Yu,Erhu Yan,Hongliang Peng,Pengru Huang,Shujun Qiu,Cuili Xiang,Yujie Sun
In this work, Ni-Bi-B alloy has been synthesized via chemical synthesis method . A new kind of Al-InCl 3 -(Ni-Bi-B) composite has been prepared by high energy mechanical ball grinding Al powder with additives. Results show that the doped Ni-Bi-B alloy can significantly improve the hydrogen generation performance of Al-InCl 3 and the catalytic activity is enhanced with the increasing content of Bi in Ni-Bi-B alloy. Under optimal conditions, the hydrogen generation yield and conversion yield of Al-InCl 3 -(Ni-Bi-B) reached 1196.8 mL g −1 and 100.0% at room temperature, respectively. Mechanism study shows five kinds of active sites, such as the fresh surface/defect of Al particle , Al-AlCl 3 , Al-In, Al-Bi/B and Al-Ni/B produced during the ball milling process. Their synergistic effect enhances the hydrogen generation performance of Al-InCl 3 -(Ni-Bi-B) remarkably. In general, the proposed Al-InCl 3 -(Ni-Bi-B) composite is possible to serve as hydrogen generation material for fuel cells.
研究领域:
材料科学
·
能源工程
✓ 已验证
DOI
高影响因子
JOURNAL OF NON-CRYSTALLINE SOLIDS
·
2025
·
IF 3.5
Jing Wei,Zhigang Zheng,Zhaoguo Qiu,Dechang Zeng
The removal efficiency of tetracycline (TC) by Fe-based amorphous (Fe am ) alloy was investigated through batch experiments, examining the effects of TC concentration, initial pH, and environmental temperature on its removal performance. The experimental results indicate that Fe am , owing to its amorphous structure and excellent catalytic properties, has a TC removal rate that is 2.75 times greater than that of zero-valent iron (ZVI) powder. Within the range of initial pH values from 4 to 7, the degradation efficiency for TC remains high, with nearly all removal rates reaching 99 % after 30 min of treatment. The results suggest that the removal process is primarily attributed to adsorption (by Fe 0 and its corrosion products) and reduction. The pH significantly influences the formation of iron corrosion products and the variations in TC species. The reactive adsorbed Fe 2+ plays a crucial role in the removal process. In addition to demonstrating effective removal capabilities for TC, Fe am also exhibits excellent removal performance for oxytetracycline (OTC) hydrochloride and chlorotetracycline (CTC) hydrochloride, underscoring its broad applicability among tetracycline antibiotics. In summary, this study provides a novel approach for the removal of tetracycline antibiotics from water.
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
International Journal of Nanomedicine
·
2019
·
IF 4.471
Ning Sun,Dou Wang,Guoqiang Yao,Xiaomei Li,Ting Mei,Xinke Zhou,Kwok-Yin Wong,Baishan Jiang,Zhiyuan Fang
Background: The intraoperative visualization of tumor cells is a powerful modality for surgical treatment of solid tumors. Since the completeness of tumor excision is closely correlated with the survival of patients, probes that can assist in distinguishing tumor cells are highly demanded.Purpose: In the present study, a fluorescent probe JF1 was synthesized for imaging of tumor cells by conjugating a substrate of cathepsin B (quenching moiety) to Oregon Green derivative JF2 using a self-immolative linker.Methods: JF1 was then loaded into the folate-PEG modified CaCO3 nanoparticles. The folate receptor-targeted, pH-dependent, and cathepsin B activable CaCO3 nanoprobe was test in vitro and in vivo for tumor imaging.Results: CaCO3 nanoprobe demonstrated good stability and fast lighting ability in tumors under low pH conditions. It also showed lower fluorescence background than the single cathepsin B dependent fluorescent probe. The pH-dependent and cathepsin B controlled “turn-on” property enables precise and fast indication of tumor in vitro and in vivo.Conclusion: This strategy of controlled drug delivery enables in vivo imaging of tumor nodules with a high signal-to-noise ratio, which has great potential in surgical tumor treatment.
研究领域:
生物医学工程
·
肿瘤学
·
分子影像学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2023
·
IF 8.8
Xiaohui Wang,Jingjie Cao,Xin Cheng,Xuyang Liu,Wenfeng Zhu,Yan Li,Xiaochun Wan,Shengkeng Chen,Linlin Liu
Solar withering is essential for the aroma formation of oolong tea, but due to the rainy and humid weather in plantation areas, solar withering became insufficient which seriously limits high-grade oolong tea production. This study aims to investigate ultraviolet B (UV-B) effects on the aroma characteristics of oolong tea and its feasibility in improving tea aroma quality. Sensory evaluation, odorant quantitation, and aroma characteristic analysis suggested UV-B application during the aeration process provided similar effects as solar withering in improving the aroma quality of oolong tea. UV-B application significantly increased fruity and floral odorants (4-hexanolide, α -farnesene, and β -ocimene by 44%, 74%, and 37%, respectively), and decreased green and fatty odorants (hexanal, ( E )-2-octenal, and ( Z )-4-heptenal by 42%, 45%, and 27%, respectively). These indicate UV-B is crucial for the flowery and fruity aroma formation of oolong tea, which can be potentially applied to oolong tea production, especially under unsunny weather.
研究领域:
食品科学
·
植物生理学
✓ 已验证
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2019
·
IF 3.206
Xiaolan Jiang,Yuncong Yuan,Linbo Chen,Yiming Liu,Mengwei Xiao,Yadong Hu,Ze Chun,Xun Liao
Monoamine oxidase B (MAO-B) was for the first time immobilized on magnetic nanoparticles to be used for screening of MAO-B inhibitors from herbal extracts. The immobilized enzyme was characterized with transmission electronic microscopy , Fourier transform infrared spectroscopy, thermal gravimetric analysis , and vibrating sample magnetometer. The immobilized enzyme retained 95% of the activity, while the thermostability was significantly increased. It was then used as solid phase extraction absorbent to extract MAO-B's ligands from two traditional Chinese medicinal plants, Cortex fraxini and Pericarpium granati . Calceolarioside B and ellagic acid were extracted from C. fraxini and P. granati, respectively, and both of them were found to be inhibitors of MAO-B with IC 50 of 40.95 ± 0.63 and 103.70 ± 2.34 μ M, respectively. This is the first report that calceolarioside B inhibits MAO-B activity. Furthermore, inhibitory mechanisms of both compounds were studied by molecular docking analysis, the results of which demonstrated that the affinity of calceolarioside B with monoamine oxidase B was stronger than that of ellagic acid. The method proposed in this work is highly efficient for screening of MAO-B inhibitors from complex mixtures, showing great potential in discovering anti-Parkinson's disease compounds present in medicinal plants.
研究领域:
药理学
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生物化学
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分子生物学
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中医药学
✓ 已验证
产品关联
DOI
高影响因子
WATER AIR AND SOIL POLLUTION
·
2024
·Vol. 235
·期 9
·1-11
·
IF 3.8
Wei Hongyan,Li Xuejiao,Chen Lizhu,Li Shujie,Liu Hongxu,Song Tiehong
At present, the visible light (Vis) catalytic oxidation, as a wastewater treatment approach without secondary pollution, has captured the interest of many researchers. However, the efficiency of visible photocatalysis still needs to be continuously improved. In this study, a piezoelectric photocatalyst Bi 2 WO 6 (BWO) responding to both Vis and ultrasound (US) was prepared, characterized, and employed to treat Rhodamine B (RhB) in water. The removal efficiencies of RhB under different systems (Vis/BWO, US/BWO, (Vis + US)/BWO) were investigated and the reuse capacity of BWO were examined. Moreover, the piezoelectric photocatalytic mechanism of (Vis + US)/BWO system on RhB removal was analyzed. The results exhibited that the prepared Bi 2 WO 6 possessed excellent photoresponsive and piezoresponsive properties, and the removal and mineralization of RhB could reach 100% and 77.2% within 60 min, respectively. Under the combined effect of photocatalysis and piezoelectricity, the superoxide radicals, hydroxyl radicals, and photogenerated holes produced, which were responsible for the degradation of RhB in (Vis + US)/BWO system. Graphical Abstract
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
Materials Advances
·
2022
·Vol. 3
·期 4
·2185-2190
·
IF 0
Ping Li,Mengyou Gao,Lei Sun,Huizhong Xu,Xiaochen Dong,Jianjian Lin
Coating a few layers of MoS2 nanosheets on a substrate is an effective approach to enhance catalytic activity for photocatalytic degradation. Herein, we fabricated heterostructured TiO2/MoS2 (H-TiO2/MoS2) with high structural stability via a simple two-step solvothermal approach. H-TiO2/MoS2 was composed of TiO2 as a hard core and MoS2 nanosheets as a shell, which could increase the electron transfer rate between TiO2 and MoS2 and enable active edge sites of MoS2 to be maximally exposed. Besides, H-TiO2/MoS2 indicated enhanced light absorption in the UV to Vis range when compared to TiO2 nanoparticles, and slightly lower than that of MoS2. This is beneficial for the enhancement of the photocatalytic degradation performance. Therefore, H-TiO2/MoS2 displayed a strong adsorption ability toward organic dyes and showed excellent performance in the photocatalytic degradation of rhodamine B with the concentration decreased by 99.4% due to the synergistically stimulative effect. The work will enlighten the development of highly efficient molybdenum sulfide-based heterostructured photocatalysts.
研究领域:
材料科学
·
环境科学
·
化学
✓ 已验证
产品关联
DOI
危险品化学品经营许可证（带存储）