RSC Advances
·
2017
·Vol. 7
·期 31
·19205-19210
·
IF 3.108
Jing Yan,Honghu Yao,Junhao Li,Shiman He,Qili Wu,Xianfeng Yang,Wasim Ullah Khan,Jianxin Shi,Mingmei Wu
To meet the increasing requirement, much effort has been devoted to enhance the emission intensity and tailor the emission color of rare earth phosphors. However, limited contributions have been made to the up-conversion (UC) of nanorods by complete epitaxial growth on each facet to achieve this requirement. In this study, we propose a facile epitaxial growth route to grow anisotropic hexagonal β-NaYF4:Yb3+/Ho3+@β-NaYbF4:Er3+, β-NaYF4:Yb3+/Ho3+@β-NaYF4, and β-NaYbF4:Er3+@β-NaYF4 core/shell nanorods, which were realized by adding hexagonal β-NaYF4:Yb3+/Ho3+ or β-NaYbF4:Er3+ nanorods as a core-nanostructure into a solution containing cubic α-NaYbF4:Er3+ or α-NaYF4 nanoparticles as the shell-precursor. During epitaxial growth-induced phase transformation, the precursor nanoparticles disappeared gradually in the solution and consequently corresponding β-phased shell yielded on each outer facet of each β-phased nanorod core. Eventually, the nanorod core was covered completely with a uniformly grown β-NaYbF4:Er3+ or β-NaYF4 shell. The UC emission of either β-NaYF4:Yb3+/Ho3+ or β-NaYbF4:Er3+ core can be enhanced by the outer shell due to the decrease in the number of surface defects. In addition, tailored UC emissions could be obtained by controlling the shell components and thickness, typically in the core/shell nanorods of β-NaYF4:Yb3+/Ho3+@β-NaYbF4:Er3+. The tunable colors with improved emission in these core/shell nanorods may find wider applications in multicolor labeling and anti-counterfeiting.
研究领域:
材料科学
·
光学
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DOI
高影响因子
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
·
2015
·Vol. 121
·期 1
·193-202
·
IF 1.704
Lü Mengyun,Guan Tengpeng,Li Ai-Hua,Sun Zhijun
In solvothermal synthesis of Er 3+ -doped NaGd 1− x
Yb
x
F 4 nanocrystals, morphology of the nanoparticles is dependent on the molar ratio of the chelating agent (e.g., trisodium citrate) to the lanthanide ions. Usually, addition of chelating agent is reported to be effective only when the molar ratio is below a critical value usually around 1 for the preparation of Er 3+ - and Yb 3+ -doped NaYF 4 nanocrystals. In this work, we found that, by increasing the Yb 3+ concentration, the critical molar ratio can be up to more than 4 in the preparation of Er 3+ -doped NaGd 1− x
Yb
x
F 4 nanocrystals, which provides a new route to control the nanoparticles’ size. The result is particularly useful for the synthesis of small Er 3+ -doped NaGd 1− x
Yb
x
F 4 nanocrystals with high concentration of the Yb 3+ dopant. We also investigated mechanisms on the formation of such particles ( β -NaGd 0.3 Yb 0.7 F 4 :Er 3+ ) with large size in a sub-micrometer scale, i.e., the aggregation-induced crystal growth. In addition, upconversion luminescence properties of the powdery samples were studied, which is shown to be dependent both on size of the nanoparticles and on dosage of the trisodium citrate.
研究领域:
材料科学
·
纳米技术
·
光学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Shiyin Zhao,Songyang Jiang,Yuxuan Xia,Fang Wang,Yujiao Li,Zhuoliang Liu,Xin Min,Cheng-an Tao
First piezo-responsive MOF heterostructure for mechanical Cr(VI) reduction. • F-modified MOF and ZnO loading synergistically boost piezoelectric response. • Efficient piezo-catalytic interface enables ultrafast Cr(VI) reduction. • 10 ppm Cr(VI) completely reduced to undetectable level within only 15 s. Hexavalent chromium (Cr(VI)) is highly toxic and carcinogenic; its reduction to Cr(III) remains the most viable remediation strategy. Piezoelectric catalysis, which converts mechanical energy into chemical energy via built-in electric fields, offers a sustainable route for pollutant degradation. However, the application of piezoelectric Metal-Organic Frameworks (MOFs) in heavy metal reduction remains largely unexplored. Herein, we report a strategy of fluorination combine with ZnO loading to construct piezoelectric MOF heterostructures for ultrafast Cr(VI) reduction. The optimized ZnO/UiO-66-F 4 completely reduced 10 ppm Cr(VI) to below detection limits within merely 30 s under sonication, substantially outperforming pristines. Systematic characterizations and DFT calculations revealed that fluorination depresses the conduction band to −0.91 V vs. NHE, establishing a type-II staggered band alignment with ZnO that synergizes with the piezoelectric field to drive vectorial charge separation, as corroborated by markedly reduced charge-transfer resistance and prolonged fluorescence lifetime with enhanced quantum yield. Mechanistic investigations further identified the interfacial Zn Zr dual-atom site as the true catalytic center, exhibiting the strongest Cr(VI) adsorption affinity and the lowest activation energy barrier for the rate-determining step. The catalyst demonstrated exceptional durability, retaining 98.2% removal efficiency after five cycles with negligible metal leaching. This work pioneers the application of piezoelectric MOFs in heavy metal remediation and establishes a molecular-level electronic modulation strategy for mechanical-energy-driven water purification. Piezoelectric ZnO/UiO-66-F 4 heterostructure was constructed via fluorine modification coupled with ZnO loading, demonstrating superior piezocatalytic performance for Cr(VI) reduction under ultrasonic vibration. Download: Download high-res image (138KB) Download: Download full-size image
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高影响因子
Journal of Materials Chemistry C
·
2014
·Vol. 2
·期 42
·9004-9011
·
IF 0
Zhuo Wang,Jing Feng,Shuyan Song,Zhiqiang Sun,Shuang Yao,Xin Ge,Min Pang,Hongjie Zhang
The pure and intense orange upconversion luminescence of Eu3+ was efficiently achieved in NaYF4 and NaLuF4 nanocrystals through the upconversion sensitization of doped Yb3+ and Mn2+ ions dimer for the first time. A shell-coating strategy was performed to further enhance the emission intensity. In this work, a novel upconversion mechanism for energy transfer from the Yb3+–Mn2+ dimer to the Eu3+ ion was proposed by analyzing the upconversion luminescence spectra, lifetimes and pumping photons measurements of the obtained nanocrystals in detail. The applications of the nanocrystals for CT imaging and ratiometric pH sensing in physiological pH range were performed. This study also provides a new upconversion spectral region at around 592 nm for applications in multicolor imaging, multiplexed encoding and detection.
研究领域:
材料科学
·
生物医学工程
·
光学
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DOI
WOOD SCIENCE AND TECHNOLOGY
·
2026
·Vol. 60
·期 5
·81
·
IF 3.2
Huang Changzhu,Zhu Yaqin,Luo Yilong,He Bin,Wu Yunfei,Zhang Chunmei,Duan Gaigai,Han Xiaoshuai,Zhou Rongfei,He Shuijian,Jiang Shaohua
Efficient CO 2 capture remains challenging due to limited adsorption capacity and slow kinetics of conventional materials. Herein, we report a strong–weak acid modulation strategy for the in situ growth mesoporous UiO-66-F 4 within the aligned carbonized wood channels, yielding a hierarchical MOF–carbon composite denoted as meso-UiO-66-F 4 @CP. Dual-acid regulation enables highly uniform and controlled MOF growth under environmentally friendly aqueous conditions, avoiding the use of toxic organic solvents and ensuring a sustainable synthesis route. This composite effectively combines the macroporous framework of carbonized wood with the intrinsic micropores and mesopores of UiO-66-F 4 , establishing a hierarchical pore network that significantly enhances CO 2 diffusion, mass transport, and overall adsorption efficiency. Furthermore, the introduction of fluorinated linkers strengthens dipole–quadrupole interactions, generating abundant high-affinity adsorption sites specifically tailored for CO 2 molecules. Under the present experimental conditions, meso-UiO-66-F 4 @CP exhibits a CO 2 uptake of 38 cm 3 g⁻ 1 (approximately 1.70 mmol g⁻ 1 ) at 298 K and 1 bar, together with a measured adsorption rate of 0.085 mmol g⁻ 1 min⁻ 1 . This work provides a sustainable strategy for constructing hierarchical MOF–carbon composites with tailored pore structures and surface chemistry for CO 2 capture applications.
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高影响因子
FOOD CHEMISTRY
·
2024
·
IF 8.5
Yaqi Yu,Dilong Hong,Zeyu Zhu,Yuliang Jiang
Food safety issues are becoming increasingly prominent, raising public concern. Antibiotic pollutants, as a unique category, act like a double-edged sword. On one hand, they provide precise treatment for related diseases, but on the other hand, their excessive use or improper handling can lead to environmental contamination or entry into the biological chain. This makes it easy for living organisms to come into contact with and ingest these pollutants, leading to serious consequences. Among these antibiotics, Levofloxacin (LVF), a broad-spectrum antibacterial agent, effectively treats various bacterial infections but also causes severe problems due to its misuse. Therefore, developing a simple, fast, and efficient probe for detecting LVF is crucial for environmental protection and human safety. In this study, a novel UiO-66-F 4 fluorescent probe was synthesized. This probe demonstrated dual-channel detection of LVF through its inner filter effect (IFE) and chemical interactions, resulting in a visible color change from colorless to green. It exhibits good linear ranges at the fluorescence peaks of 494 nm (30–68 μM), with a detection limit of 0.1 μM. Based on its excellent detection performance, the probe was further applied for the quantitative determination of LVF in different types of food and beverages samples, yielding satisfactory results with recovery rates ranging from 93.4 % to 114.6 %. This probe offers a reliable means for the detection and evaluation of trace amounts of LVF in food.
研究领域:
分析化学
·
环境科学
·
食品科学
·
材料科学
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DOI
PubMed
高影响因子
Pharmacology Research & Perspectives
·
2020
·Vol. 8
·期 5
·e00660
·
IF 2.052
Jingyi Zhao,Ying Chen,Lijun Dong,Xin Li,Ruijie Dong,Dongmei Zhou,Chengzhi Wang,Xiangdong Guo,Jieyou Zhang,Zhenyi Xue,Qing Xi,Lijuan Zhang,Guangze Yang,Yan Li,Rongxin Zhang
Acute peritonitis is an acute inflammatory response of the peritoneal cavity to physical injury and chemical stimulation. Timely resolution of this response is critical to prevent further damage to the body, which can eventually lead to more severe chronic inflammation. Arctigenin (ATG) is the main active ingredient of the Chinese medicine Arctium lappa . In recent years, there have been an increasing number of studies on the anti-inflammatory effect of ATG, but there have been few studies on the effect of ATG on acute inflammation, especially in acute peritonitis, which has not been reported. In this study, a mouse model of experimental acute peritonitis induced by thioglycolate (TG) solution was used to study the protective anti-inflammatory effect of ATG against acute peritonitis and the relevant mechanism. Our results showed that, after 12 hours of TG treatment, ATG significantly reduced inflammatory cell infiltration in mouse tissues and inhibited the secretion and expression of interleukin-6 (IL-6) and tumor necrosis factor alpha (TNF-α) in mice. ATG significantly reduced the percentage of CD11b + Ly6G + neutrophils and F4/80 + macrophages in the spleen and peritoneal exudate. In addition, ATG significantly inhibited the expression of the chemokines CCL3 and CCL4 and the adhesion molecule CD62L on the surface of CD11b-positive monocytes. ATG was observed to inhibit the phosphorylation of p65 and p38 in LPS-stimulated RAW264.7 cells. In conclusion, ATG can improve the symptoms of TG-induced acute peritonitis through immune regulation. ATG can reduce the inflammatory response in TG-induced acute peritonitis in mice.
研究领域:
药理学
·
免疫学
·
炎症性疾病
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DOI
PubMed
高影响因子
DRUG DEVELOPMENT RESEARCH
·
2020
·Vol. 81
·期 4
·526-533
·
IF 1.902
Dong Liu,Hailong Qin,Bixian Yang,Bin Du,Xuelin Yun
Liver fibrosis is characterized by the activation of hepatic stellate cells (HSCs) and accumulation of the extracellular matrix. There are limitations in the current therapies for liver fibrosis. Recently, oridonin was shown to induce apoptosis in HSCs. Thus, we aimed to determine the roles of oridonin in chronic liver injury and fibrosis. Liver fibrosis was induced by CCl 4 in mice injected intraperitoneally with oridonin for 6 weeks. The administration of oridonin significantly attenuated liver injury and reduced ALT levels. In addition, Sirius Red staining and the expression of α-smooth muscle actin (α-SMA) were significantly reduced by oridonin in murine livers with fibrosis. The expression of NLRP3, caspase-1, and IL-1β was downregulated with the oridonin treatment. Furthermore, the expression of F4/80 in liver tissues was also decreased by oridonin treatment. These results demonstrate that oridonin ameliorates chronic liver injury and fibrosis. Mechanically, oridonin may inhibit the activity of the NLRP3 inflammasome and inflammation in the liver. These results highlight the potential of oridonin as a therapeutic agent for liver fibrosis.
研究领域:
药理学
·
肝病学
·
炎症
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DOI
PubMed
高影响因子
Reaction Kinetics Mechanisms and Catalysis
·
2026
·
IF 2.1
Wang Jiahao,Liu Feng,Xie Lei,Yang Hailiang,Ma Sanjian,Lin Zixia,Liu Xin,Wang Suqin
Refractory wastewater treatment via Fenton reactions is hindered by iron sludge. Herein, fluorinated UiO-66(Zr)-F4 was employed as a hydrogen-storage carrier to confine Pd⁰ catalytic centers, and an [H]-mediated (H 2 -precursored) Fenton-like system was constructed for carbamazepine degradation under ambient conditions. With 25 μM Fe 2 + and 60 mL min⁻ 1 H 2 flow, 53% carbamazepine removal was achieved in 1 h via ⋅OH/ 1 O 2 oxidation, and > 59% efficiency was retained over six 3-h cycles. However, [H]-driven hydrogen spillover reduced C-F bonds, causing a 92.3% drop in specific surface area that compromised long-term stability. It was concluded that fluorination is suboptimal; modulating the carrier’s hydrophobicity via electron-donating groups (instead of fluorination) is critical for stable Zr-MOF-based catalysts in [H]-assisted advanced oxidation, offering alternative perspectives for process optimization. Graphical abstract
The alternative text for this image may have been generated using AI.
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DOI
高影响因子
ACS Applied Nano Materials
·
2023
·
IF 5.9
Qiang Feng,Hongting Xu,Xiaoyu Pan,Siqi Geng,Huifeng Qian,Chujie Wang,Ying Li,Jiaying Qin,Yiting Wu,Bangyi Zhou,Xiaoyu Liu,Zhiqiu Ye,Yingchun Xu,Zhangsen Yu
Acetaminophen (APAP), a common antipyretic and analgesic drug, is considered the most common cause of drug-induced liver injury (DILI). The mechanism of liver injury induced by APAP is mainly related to oxidative stress and inflammatory reaction. Herein, we report a simple and efficient one-step synthesis of Prussian blue (PB) nanozymes with multiple antioxidant enzymatic activities that effectively treat APAP-induced DILI. At the cellular level, reaching 10 μg/mL PB nanozymes can effectively scavenge intracellular reactive oxygen species (ROS), reduce mitochondrial membrane potential drop, and inhibit hepatocyte apoptosis. According to in vivo experimental studies, the levels of serum biochemical indicators and histopathological examination of DILI mice livers showed that 12.5 mg/kg PB nanozymes could effectively inhibit liver necrosis and 25 mg/kg PB nanozymes achieved the same therapeutic effect as 300 mg/kg NAC. More importantly, compared with NAC, PB nanozymes can still attenuate APAP-induced acute liver injury in mice after APAP-induced acute liver injury in mice for 3 h. Therefore, PB nanozymes can effectively prolong the therapeutic time window, revealing the potential of PB nanozymes in clinical applications for advanced DILI treatment. Furthermore, the therapeutic mechanism studies have shown that PB nanozymes with abundant and variable valence states could not only directly scavenge ROS but also through the Keap1-Nrf2/HO-1 pathway to reduce oxidative stress. Moreover, the decreased expression levels of myeloperoxidase and F4/80 in the liver, which are markers of neutrophil and macrophage infiltration, indicated that the Prussian blue nanozymes modulates inflammation to protect against APAP-induced acute liver injury. Consequently, our findings suggested that PB nanozymes have excellent clinical application prospects for acetaminophen-induced acute liver injury.
研究领域:
药理学
·
纳米医学
·
肝病学
·
生物化学
·
毒理学
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Huiyuan Bai,Fei Kong,Kaizheng Feng,Xuan Zhang,Haijiao Dong,Di Liu,Ming Ma,Fangzhou Liu,Ning Gu,Yu Zhang
Anthracycline-induced liver injury (AILI) is becoming an increasingly serious and potential clinical complication and is linked to reactive oxygen species (ROS) production and subsequent inflammatory response. Herein, we demonstrated that artificial Prussian blue nanozymes (PBZs) prevented daunorubicin-induced liver injury, a prototype of AILI, by attenuating ROS production and regulating inflammation. PBZs exhibited multienzyme activity and could scavenge ROS and free radicals. At the cellular level, PBZs could effectively eliminate ROS, suppress hepatocyte apoptosis, reduce deoxyribonucleic acid damage, and decrease the levels of inflammatory cytokines and chemokines. According to the results of the in vivo study, pretreatment with PBZs also resulted in a desirable protective effect against AILI, as indicated by both a decrease in biochemical indicator levels and hepatocyte necrosis. PBZs upregulated antioxidative genes by activating the Nrf2 pathway to reduce oxidative stress. Meanwhile, PBZs counteracted the inflammatory response based on the decreased expression levels of myeloperoxidase and F4/80 in the liver. Collectively, our findings indicate that PBZ-based nanotherapy is a novel strategy for protecting against AILI.
研究领域:
药理学
·
纳米医学
·
肝病学
·
氧化应激与炎症
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DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）