JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
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2023
·Vol. 333
·期 1
·545-556
·
IF 1.6
Tang Haoming,Zhang Mingzhu,Ran Fengya,Sun Shiyong,Golubev Yevgeny Aleksandrovich,Zhao Qian,Lin Sen,Duan Tao,Kotova Olga Borisovna
The Cu 2 O/Cu modified shungite (ShC) absorbent (Cu 2 O/Cu-ShC) was synthesized by hydrothermal method, benefiting from the mineral backbone and Cu 2 O/Cu particles, Cu 2 O/Cu-ShC can remove ~ 96% of I − within 60 min, the batch experiments showed that the I − adsorption process follows pseudo-second-order model and Langmuir model with maximum adsorption capacity of 10.99 mg/g. The high binding affinity between Cu + and I − contributes effective removal of I − and excellent selectivity at high concentrations of competing ions. This work highlights the feasibility of Cu 2 O/Cu-ShC for the radioactive iodine separation, and provides a promising sorbent material for large-scale purification of radioactive iodine anions in wastewater.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
Natural Products Journal
·
2019
·Vol. 9
·期 2
·138-143
·
IF 0
Li Tianyun,Dai Xiling,Li Yichen,Huang Guozheng,Cao Jianguo
Background: Stenoloma chusanum (L.) Ching is a Chinese traditional medicinal fern with high total flavonoid and total phenolic content. Traditionally, phenolic compounds were separated by using column chromatography, which is relatively inefficient. Objective: This study aims to
use an efficient method to separate natural products from S. chusanum by Medium-Pressure Liquid Chromatography (MPLC) and High-Speed Counter-Current Chromatography (HSCCC). Methods: In the present research, firstly, a sample (2.5 g) from the dichloromethane extract of S. chusanum was
separated by MPLC. Next, fraction P5 was purified by HSCCC with a two-phase solvent system composed of hexane-ethyl acetate-methanol-water (HEMWat) at a volume ratio of 2:4:1:4 (v/v/v/v). Result: Four phenolic acids were obtained and their structures were identified by means of NMR and
ESI-mass analysis. They were identified as: 1) protocatechuic acid (34 mg, purity 90.1%), 2) syringic acid (66 mg, purity 99.0%), 3) p-hydroxybenzoic acid (5 mg, purity 91.2%) and 4) vanillic acid (6 mg, purity 99.3%). Conclusion: The combination of MPLC and HSCCC is a high-efficiency
separation method for natural products. This is the first report with regard to the separation of four phenolic acids in one step by MPLC and HSCCC from S. chusanum (L.) Ching.
研究领域:
药用植物化学
·
天然产物分离纯化
✓ 已验证
DOI
Materials Horizons
·
2025
·
IF 10.7
Zhiguang Guo,Yuanmeng Zhou,Jing Wang,Shulun Ai
Facing the increasingly serious problems of plastic waste pollution and food waste, edible superhydrophobic coatings have received extensive attention from researchers because of their excellent anti-adhesion performance, which can effectively prevent liquid food from adhering to the inner wall of containers. In this study, we designed a heat-resistant and edible superhydrophobic coating by leveraging the unique and robust hierarchical structure of Lycopodium spore powder (LSP) and utilizing natural low surface energy carnauba wax (CW) as the binder. The focus was to evaluate the hydrophobicity, heat resistance, and mechanical properties of the coating and to further demonstrate its application on liquid food packaging surfaces. The results confirmed that the superhydrophobic coating (LCW) prepared by the coating exhibited excellent superhydrophobic properties (WCA>150°, SA<4°) and excellent self-cleaning function. It also has excellent anti-adhesion properties to food liquids with high viscosity and complex composition, such as honey and yogurt, etc. (it only takes 5170 ms and 2930 ms to completely slip on a surface with about 10° tilt, respectively). The incorporation of Lycopodium spore power notably enhanced the thermal stability of the coating, allowing it to retain a temperature of 150 ° even after being subjected to high-temperature treatment at 120 ℃ for 2 hours. We posit that this lycopodium-coated water-repellent material offers a promising avenue for the efficient production of biodegradable superhydrophobic coatings and holds significant potential for applications in functional food packaging.
研究领域:
材料科学
·
食品包装
·
表面工程
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可降解材料
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纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Nano
·
2024
·
IF 15.8
Liyun Zheng,Yiming Ding,Shiji Fang,Wenjing Yang,Jiale Chen,Ji Ma,Mengyuan Wang,Jiaoli Wang,Feng Zhang,Xiaoju Guo,Kun Zhang,Gao-Feng Shu,Qiaoyou Weng,Fazong Wu,Zhongwei Zhao,Minjiang Chen,Ji Jiansong
Unfavorable phenotypes characterized by low immunogenicity and acidity within the tumor microenvironment (TME) contribute to immunosuppression and therapeutic resistance. Herein, we rationally synthesized a multifunctional nanoregulator by encapsulating DOX and erianin into calcium carbonate (CaCO3)-based nanoparticles using a modified double emulsion method. The DOX and erianin-loaded CaCO3-based nanoparticles, termed DECaNPs, could effectively induce the calcium overload by triggering calcium influx and absorbing CaCO3 nanoparticles. Additionally, DECaNPs also neutralize the acidic TME by interacting with extracellular protons and limiting lactic acid production, a result of metabolic remodeling in cancer cells. As a result, DECaNPs elicit cellular oxidative stress damage, which mediates the activation of ferroptosis/apoptosis hybrid pathways, and profound immunogenic cell death. Treatment with DECaNPs could inhibit the growth of tumors by promoting oxidative stress, acid neutralization, metabolic remodeling, and protective antitumor immunity in vivo. In addition, DECaNPs could synergistically amplify the antitumor effects of αPD-L1 in a bilateral tumor model by eliciting systemic immune responses. In all, our work presents the preparation of CaCO3-based nanoregulators designed to reverse the unfavorable TME and enhance αPD-L1 immunotherapy through multiple mechanisms.
研究领域:
肿瘤学
·
药学
·
纳米技术
·
免疫学
·
癌症治疗
✓ 已验证
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）