CELLULAR & MOLECULAR BIOLOGY LETTERS
·
2017
·Vol. 22
·期 1
·1-11
·
IF 1.26
Li Xican,Xie Hong,Jiang Qian,Wei Gang,Lin Lishan,Li Changying,Ou Xingmei,Yang Lichan,Xie Yulu,Fu Zhen,Liu Yamei,Chen Dongfeng
The natural dihydroflavonol (+) taxifolin was investigated for its protective effect on Fenton reagent-treated bone marrow-derived mesenchymal stem cells (bmMSCs). Various antioxidant assays were used to determine the possible mechanism. These included •OH-scavenging, 2-phenyl-4, 4, 5, 5-tetramethylimidazoline-1-oxyl-3-oxide radical-scavenging (PTIO•-scavenging), 1, 1-diphenyl-2-picryl-hydrazl radical-scavenging (DPPH•-scavenging), 2, 2′-azino-bis (3-ethylbenzo-thiazoline-6-sulfonic acid) radical-scavenging (ABTS+•-scavenging), Fe3+-reducing, and Cu2+-reducing assays. The Fe2+-binding reaction was also investigated using UV-Vis spectra. The results revealed that cell viability was fully restored, even increasing to 142.9 ± 9.3% after treatment with (+) taxifolin. In the antioxidant assays, (+) taxifolin was observed to efficiently scavenge •OH, DPPH• and ABTS+• radicals, and to increase the relative Cu2+- and Fe3+-reducing levels. In the PTIO•-scavenging assay, its IC50 values varied with pH. In the Fe2+-binding reaction, (+) taxifolin was found to yield a green solution with two UV-Vis absorbance peaks: λmax = 433 nm (ε =5.2 × 102 L mol−1 cm −1) and λmax = 721 nm (ε = 5.1 × 102 L mol−1 cm −1). These results indicate that (+) taxifolin can act as an effective •OH-scavenger, protecting bmMSCs from •OH-induced damage. Its •OH-scavenging action consists of direct and indirect antioxidant effects. Direct antioxidation occurs via multiple pathways, including ET, PCET or HAT. Indirect antioxidation involves binding to Fe2+.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Catalysis
·
2024
·
IF 11.3
Yuexiang Li,Junliang Liu,Shuqi Li,Shaoqin Peng
Hydrogen production through electrochemical water splitting (EWS) presents a viable solution for addressing the fossil energy crisis. However, the commercial viability of this approach is impeded by the sluggish kinetics of the oxygen evolution reaction (OER). It is urgently needed to develop efficient, stable, and cost-effective OER electrocatalysts. Herein, we comprehensively design and investigate a phosphate ion and Fe3+ codecorating Ni(OH)2/NiOOH electrocatalyst (Pi-Fe:NiOH) for OER. This codecoration induces multiple synergistic effects, which include an increase in the interlayer water content for the internal OER, altering the OER mechanism, facilitating proton transport across the layers, and improving the stability of Pi-Fe:NiOH. Consequently, Pi-Fe:NiOH exhibits a high OER activity with overpotentials of 118 ± 1 and 222 ± 4 mV at current densities of 10 and 100 mA cm–2, respectively. More impressively, it maintains stable operation at a high current density of around 300 mA cm–2 for at least 500 h, much better than the Ni(OH)2/NiOOH electrocatalyst (NiOH) for less than 6 h at a current density below 200 mA cm–2. These findings offer insights for the design of anion–cation codoped hydroxide eletrocatalysts, paving a way for the development of efficient and stable OER electrocatalysts.
✓ 已验证
产品关联
DOI
高影响因子
INORGANICA CHIMICA ACTA
·
2025
·
IF 3.2
Lei Yuan,Yuanzhen Liu,Zhenyu Zhu,Na Xin,Liwei Zhang,Chunming Xu
We introduce Co(OH)₂/Ni₂Co (PO₄)₂ composite nanomaterials, synthesized via hydrothermal synthesis, as potential high-stability cathode materials for hybrid supercapacitors (HSCs). Structural characterization tests, such as XRD, SEM, HRTEM, and XPS, revealed the subtleties of the morphology, structure, and composition of these nanostructures. The electrode material exhibits an ultra-high capacitance of 2131.2 F g −1 at 1 A g −1 . When combined with activated carbon (AC), the resulting HSC exhibits a high capacitance of 123.2 F g −1 and remarkable cycle life, with 94.6 % capacitance retention after 12,000 cycles. The device achieves an energy density of 39.5 Wh kg −1 at 750 W kg −1 . This study meticulously details the synthesis, structural characterization, and extensive electrochemical analysis, culminating in their effective application in HSCs.
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2012
·Vol. 36
·期 6
·1335-1338
·
IF 2.605
Sa Huang,Jianhua Liu,Di Liu,Qinghai Yuan
We report the facile and scalable synthesis of a highly monodispersed inorganic nanostructure based on well-designed Gd(OH)3 nanorods. X-Ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), as well as energy-dispersive spectroscopy (EDS) were applied to characterize the samples, indicating that the nanomaterials with an average length of 100 nm and an average diameter of 15 nm showed a typical hexagonal phase. Biocompatibility tests were performed from in vitro cell experiments to in vivo long-term histological assessment, indicating that the Gd(OH)3 nanorods were promising for further bio-related application. Owing to the excellent paramagnetic behavior, we further investigated the capability of the nanorods as MRI contrast agent. Compared with the conventional Gd–DTPA complex, the well-designed Gd(OH)3 nanorods present a higher T1 relaxation rate, showing more potential for biomedicine applications.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Man Zhao,Liwu Qiang,Meng Bai,He Xiao,Li Zhang,Junming Zhang,Tianjun Hu,Baoliang Lv,Shengxiang Wang,Jianfeng Jia
Rational design of Ni-based electrocatalysts for methanol electrooxidation reaction (MOR) and in-depth understanding of their catalytic mechanism remain a challenge. Herein, carbon dots/graphene heterostructure is constructed to load Ni(OH) 2 and the role of carbon dots focuses on regulating distribution and electronic property of Ni(OH) 2 . Regulation mechanism of carbon dots on Ni(OH) 2 for optimizing MOR activity are revealed by in-situ Raman, in-situ FTIR, operando electrochemical impedance spectroscopy, X-ray absorption fine structure (XAFS) spectroscopy, and so on. It’s found carbon dots could disperse Ni species and regulate their distribution configuration. Appropriate amount of carbon dots promotes the formation of highly dispersed CDs&Ni(OH) 2 type. Because of strong interaction between Ni(OH) 2 and CDs, coordination environment and local electronic structure of Ni in Ni-CDs/G can be regulated by carbon dots, leading to phase-ratio variation of α-Ni(OH) 2 /β‑Ni(OH) 2 and d-band center shift of Ni(OH) 2 . For the best Ni-4CDs/G electrocatalyst, more formed α-Ni(OH) 2 lead to d-band center downshift from the E F level and optimized its adsorption of methanol. Ni-4CDs/G shows the specific activity of 299.2 mA cm −2 and mass activity of 3756.5 mA mg −1 at peak current. In water splitting test, lower initial overpotential of 140 mV is found in methanol electrolysis than that in water electrolysis. This opens a new door to regulate the metal-based electrocatalysts by CDs and will inspire more people to explore CDs-based materials for electrocatalytic application.
✓ 已验证
产品关联
DOI
高影响因子
Plasma Processes and Polymers
·
2024
·
IF 2.9
Qingjin Tang,Mingjia Zhang,Binhong Wu,Xin Wang,Xin Tu,Kostya (Ken) Ostrikov,Linsheng Liu,Qiang Chen
We revisit one of the most used techniques for quantifying the aqueous OH radicals (OH aq ) in plasma–liquid systems, the molecular probe method which obtains the [OH aq ] by measuring a stable material formed through a rapid reaction between the molecular probe and the OH aq . In this study, we used disodium terephthalate (NaTA) as the molecular probe; the experimental results with a theoretical analysis suggest that to obtain the correct OH aq concentration, the concentration of the molecular probe should be greater than a certain value, which depends on the types of the plasma–liquid systems. However, this is not the case in most of the existing reports in which the NaTA is often much less than the requisite value.
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES COMMUNICATIONS
·
2024
·
IF 6.5
Fan Gao,Ying Nie,Yue Zhang,Tao Wang
Carbon nanomaterial is a momentous field of current biomedical research. However, extensive exploration is still required to endow carbon nanomaterial with both antibacterial properties and biological safety. In this study, fullerenol and calcium ions were synthesized into C 60 (OH) n -Ca nanoparticles through an electrostatic self-assembly strategy. Morphological and chemical analyses revealed that the C 60 (OH) n -Ca nanoparticles contained 4.52 at.% Ca, with a minimum size of approximately 10 nm. The electrostatic self-assembly did not alter the chemical structure of the fullerenol. The photodynamic antibacterial effect of the C 60 (OH) n -Ca nanoparticles was concentration-dependent, showing antibacterial rates of 94 % and 96.6 % against Escherichia coli and Staphylococcus aureus at a concentration of 100 μg/mL, while the antibacterial effect was unsatisfactory under dark conditions. Additionally, C 60 (OH) n -Ca nanoparticles promoted the proliferation of MC3T3-E1 cells, demonstrating desirable biological safety. The C 60 (OH) n -Ca nanoparticles synthesized in this article achieved a balance between antibacterial and cytocompatibility, thus possess potential applications in biomedical fields.
✓ 已验证
产品关联
DOI
高影响因子
IONICS
·
2024
·
IF 2.4
Wu Fang,Ge Jin-Long,Zhu Yujun,Jiao Yuhong,Wu Zhong,Feng Chao,Zhao Yupei,Li Qiu
The development of high-performance and cost-effective electrocatalysts toward the oxygen evolution reaction (OER) is remarkably desirable but challenging. Herein, we design and fabricate a sea urchin-like S-doped Ni(OH) 2 electrocatalyst on nickel foam using a simple hydrothermal method, followed by treatment with Na 2 S solution. The introduction of S not only modulates the electronic structure of Ni(OH) 2 , but also improves the electronic conductivity, thus enhancing the OER performance of Ni(OH) 2 . Owing to the free-standing feature, modified electronic structure, and sea urchin-like structure, the optimized S-Ni(OH) 2 –30 min delivers excellent OER performance with overpotentials of 306 and 392 mV at 10 and 100 mA cm −2 , respectively, Tafel slope of 89.2 mV dec −1 , and stability for 30 h at 50 mA cm −2 . This work demonstrates the importance of incorporating S in Ni(OH) 2 to optimize the electronic structure for improving OER activity and provides a promising pathway to synthesize Ni(OH) 2 -based electrocatalysts.
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Communications
·
2024
·
IF 3.7
Chunlong Qiu,Haiyang Sun,Yeyang Ni,Zhenjiang Dou,Ming Xia,Zhaoyang Fei,Zhuxiu Zhang,Mifen Cui,Qing Liu,Xu Qiao
The impressive water stability demonstrated by MIL-101(Cr) highlights its considerable potential for the effective elimination of organic contaminants from wastewater. Nevertheless, the limited availability of adsorption sites within MOFs leads to an unsatisfactory capacity for tetracycline (TC) adsorption. In this case, the lanthanum modified MIL-101(Cr) porous adsorbents, termed as nLa-MIL-101(Cr), were successfully synthesized using a post-synthetic modification method. Through various characterization analyses, it was confirmed that lanthanum exists in the form of La(OH) 3 within the adsorbents, and all adsorbents also preserved the original structure as MIL-101(Cr). The results of static adsorption experiments demonstrated that, compared to the original material, the adsorption capacity of 1La-MIL-101(Cr) for TC increased by 3.5 times. Further experiments demonstrated that the adsorbent exhibits remarkable ion interference resistance and cycle stability. Finally, based on X-ray photoelectron spectroscopy, the adsorption mechanism was primarily attributed to the coordination between TC molecules and metals active site, while electrostatic interactions also played a significant role in the process. This study has developed a highly efficient adsorbent for the treatment of TC-contaminated wastewater, which reflects promising practical application prospects.
✓ 已验证
产品关联
DOI
高影响因子
MOLECULES
·
2025
·Vol. 30
·期 17
·3529
·
IF 4.6
Qianqian Dong,Yuhao Li,Jihao Liu,Yaru Wen,Junjie Wang,Haining Mo,Qianqian Jin,Shaohui Zhang,Xiong He
This study deciphers the anionic modulation mechanism of halide ions (F−/Cl−) in cobalt-based hydroxides for oxygen evolution reaction (OER). Phase-pure Co(OH)2, Co(OH)F, and Co2(OH)3Cl were fabricated via substrate-independent hydrothermal synthesis to eliminate conductive support interference. Electrocatalytic evaluation on glassy carbon electrodes demonstrates fluoride’s superior regulatory capability over chloride. X-ray photoelectron spectroscopy (XPS) analyses revealed that F−incorporation induces charge redistribution through Co → F electron transfer, optimizing the electronic configuration via ligand effects. F−incorporation simultaneously guided the anisotropic growth of 1D nanorods and reduced surface energy, thereby enhancing the wettability of Co(OH)F. The engineered Co(OH)F catalyst delivers exceptional OER performance: 318 mV overpotential at 10 mA/cm2in 1 M KOH with 94% current retention over 20 h operation. This study provides a synthetic strategy for preparing pure-phase Co(OH)F and compares halide ions’ effects on enhancing OER activity through electronic structure modulation and morphological control of basic cobalt salts.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Bingchen Li,Zexiong Cui,Yufeng Tao,Jin Xiong,Jinbo Gao,Lihua Liu,Shiwei Song,Pengfei Tian
The slow kinetics of the cathodic hydrogen evolution reaction (HER) present a significant obstacle for alkaline water electrolysis. Consequently, developing non-precious metal HER catalysts with high activity and stability remains a challenge. This study reports a heterostructure catalyst composed of Mo-doped amorphous Ni(OH) 2 nanosheets modified Fe 3 O 4 crystal nanoparticles (Mo-NiOH@Fe 3 O 4 ). This unique structure exhibits a three-dimensional, coral-like structure, which significantly increases the electrochemically active surface area and exposes more active sites to the electrolyte. The incorporation of Mo-doped amorphous Ni(OH) 2 enriches electron density around Fe atoms, modulating their electronic state and optimizing intrinsic activity. As an alkaline hydrogen evolution catalyst, Mo-NiOH@Fe 3 O 4 requires overpotentials of only 23.7 and 140.6 mV to achieve 10 and 100 mA cm −2 , respectively, demonstrating exceptional catalytic activity. Furthermore, it shows negligible performance degradation at 100 mA cm −2 and maintains stability for over 120 h. This work demonstrates that a heterostructure strategy, integrating Mo-doped amorphous Ni(OH) 2 with Fe 3 O 4 , provides a reasonable route for developing low-cost, high-performance HER catalysts.
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2025
·
IF 5.4
Xiaoyu Qiu,Linting Zou,Jianmei Cen,Xingnian Duan
In this research, Mo-oxides complexes combined with Co(OH) 2 grown on three-dimensional (3D) nickel foam (Mo-Co(OH) 2 /NF) were developed as a peroxymonosulfate (PMS) activator enabling a pathway transition from radical to non-radical for efficient degradation of organic pollutants. The incorporation of high-valence Mo species promoted the formation of sheet structure and facilitated the Co(II)/Co(III) ratio, while Co served as the primary active site for PMS activation. Consequently, complete removal of 40 mg/L Rhodamine B (RhB) in optimized conditions (catalyst = 1.5 cm 2 , 0.4 g/L PMS dosage, reaction temperature = 25 °C) was achieved within 2 min. In addition, excellent adaptability was exhibited over a wide pH (3.0–9.0) and versatility (99 %, 80.94 % and 91.54 % for MB, LFX, and TC, respectively) in Mo-Co(OH) 2 /NF + PMS system. Impressively, radical scavenging experiments and electron spin resonance (ESR) analyses revealed that the degradation process was mainly dominated by the conversion of O 2 •– to non-radical 1 O 2 . Hence, this work demonstrates the potential of high-valent metal-oxides complexes integrated with Co(OH) 2 as effective PMS activators for non-radical degradation of dye and other refractory antibiotics, significantly broadening their applications in environmental remediation.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）