JOURNAL OF ALLOYS AND COMPOUNDS
·
2018
·
IF 3.779
Yunqing Pi,Peng Zhao,Lingjia Ma,Yangdan Cao,Huiqing Gao,Shuying Dong,Jianhui Sun
The Co(OH) 2 /reduced graphene oxide hybrids (Co(OH) 2 /rGO) was prepared and used as catalyst to enhanced heterogeneous activation of Oxone for the decomposition of Levofloxacin (LVF). The Co(OH) 2 /rGO composites with different Co(OH) 2 loading have been successfully synthesized, where the sample contain 20% Co(OH) 2 exhibited superior activation, attributing to the synergistic effect between Co(OH) 2 and rGO. Meanwhile, the effects of some important reaction parameters on the decomposition of LVF by Co(OH) 2 /rGO/Oxone process were investigated. The results indicated that the decomposition rate of LVF(>94.5%) was increased with the increasing of Oxone concentration, and 20% Co(OH) 2 /rGO dosage neutral pH. Moreover, the Co(OH) 2 /rGO catalyst showed high activity and stability during the repeated experiments.
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ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES
·
2017
·Vol. 73
·期 2
·99-103
·
IF 1.432
Lu Pan,Xiaozhan Yang,Chaoyue Xiong,Dashen Deng,Chunlin Qin,Wenlin Feng
A series of new red-orange emission phosphors Na 2 BaMg(PO 4 ) 2 :Pr 3+ were synthesised by a high-temperature solid-state reaction. The crystal structure and photoluminescence properties of these samples were characterised by X-ray diffraction and spectroscopic measurements. This compound holds P 3̅ m 1 space group of the trigonal system with the lattice parameters of hexagonal cell a =0.5304(3) nm and c =0.6989(3) nm. The phosphor emits the strongest peak at 606 nm when excited by 449 nm. The average Commission Internationale de l’Eclairage chromaticity coordinates calculated for the phosphors are (0.52, 0.46). The results demonstrate the potential application of these phosphors in solid-state lighting and other fields.
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Journal of Natural Medicines
·
2017
·Vol. 72
·期 2
·390-398
·
IF 1.982
Lu Jianrao,Yi Yang,Pan Ronghua,Zhang Chuanfu,Han Haiyan,Chen Jie,Liu Wenrui
Renal ischemia reperfusion injury (RIRI) refers to the irreversible damage for renal function when blood perfusion is recovered after ischemia for an extended period, which is common in clinical surgeries and has been regarded as a major risk for acute renal failures (ARF) that is accompanied with unimaginably high morbidity and mortality. Hypoxia during ischemia followed by reoxygenation via reperfusion serves as a major event contributing to cell apoptosis, which has been widely accepted as the vital pathogenesis in RIRI. Preventing apoptosis in renal tubular epithelial cell has been considered as effective method for blocking RIRI. In this paper, we established a hypoxia/reoxygenation (H/R) injury model in human proximal tubular epithelial HK-2 cells. Here, we found increased SPHK1 levels in H/R injured HK-2 cells, which could be significantly down regulated after berberine treatment. Berberine has been reported to exert a protective effect on H/R-induced apoptosis of HK-2 cells. So, in our present study, we planned to investigate whether SPHK1 participated in the anti-apoptosis process of berberine in H/R injured HK-2 cells. Our study confirmed the protective effect of berberine against H/R-induced apoptosis in HK-2 cells through promoting cells viability, inhibiting cells apoptosis, and down-regulating p-P38, caspase-3, caspase-9 as well as SPHK1, while up regulating the ratio of Bcl-2/Bax. However, SPHK1 overexpression in HK-2 cells induced severe apoptosis, which can be significantly ameliorated with additional berberine treatment. We concluded that berberine could remarkably prevent H/R-induced apoptosis in HK-2 cells through down-regulating SPHK1 expression levels, and the mechanisms included the suppression of p38 MAPK activation and mitochondrial stress pathways.
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RESEARCH ON CHEMICAL INTERMEDIATES
·
2018
·Vol. 44
·期 5
·3613-3627
·
IF 1.674
Sun Zhiguo,Feng Run,Zhang Li,Xie Hongyong
A new method of carbon capture and sequestration (CCS) by sodium humate (HA–Na) and Ca(OH) 2 from carbide slag (CS) solution was proposed. The effects of various operating parameters, such as the additive amount of HA–Na, pH, temperature, gas flow rate, CO 2 inlet concentration, and stirring rate on both the Ca ion concentration and Ca conversion rate were investigated in a lab-scale bubbling reactor. The synergistic mechanism of HA–Na and Ca(OH) 2 from CS on CCS is also put forward and demonstrated. The experimental results indicate that HA–Na may improve significantly the CCS capability of CS since the Ca conversion rate of CS is increased 10% by HA–Na additive. The pH is a key factor for the CO 2 absorption process and HA–Na may lower the rate of pH decrease of Ca(OH) 2 solution. The increasing temperature, stirring rate, and CO 2 inlet concentration are favorable to CO 2 capture, as well as low gas flow rate. Ca(OH) 2 from CS mixed with HA–Na solution shows good performance in CO 2 uptake, and the Ca conversion rate reaches 99% with 100 mL of Ca(OH) 2 (1.5 g/L) solution mixed with 0.1 g HA–Na at 40 °C, a gas flow rate of 0.1 L/min, and an inlet CO 2 concentration of 100% at ambient pressure. Moreover, calcite CaCO 3 is is identified as the main product of CO 2 capture by X-ray diffraction and scanning electron microscopy analysis.
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ELECTROCHIMICA ACTA
·
2018
·
IF 5.116
Zhihao Yue,Siyu Yao,Yuanzhen Li,Wenxin Zhu,Wentao Zhang,Rong Wang,Jing Wang,Lunjie Huang,Dongyang Zhao,Jianlong Wang
In order to resolve the pollution and waste caused by urea-rich wastewater, designing superior and stable earth-abundant catalysts for urea oxidation reaction (UOR) have always been attractive and urgent but still challenging. Herein, we report on a facile surface-engineering strategy of building hierarchical nickel hydroxide nanosheet@nanowire array on Ni foam (Ni(OH) 2 NS@NW/Ni foam) as anode material toward superior urea electrolysis. This Ni(OH) 2 based-catalyst with peculiar nanosheet@nanowire configuration just requires a small potential of 0.34 V ( vs. SCE) to drive 10 mA cm −2 in 1.0 M KOH with 0.33 M urea, which outperforms the one with pure nanosheet array architecture and even the commercial Pt/C catalyst. Further, a two-electrode electrolysis system is built here with the cathode of cobalt phosphide nanowire array on Ni foam (Co 2 P NW/Ni foam) and anode of Ni(OH) 2 NS@NW/Ni foam for overall urea electrolysis, which needs a low voltage of 1.58 V to drive 5 mA cm −2 in 1.0 M KOH with 0.33 M urea. Note that, the current density presented in this work is based on the real surface area of Ni foam but not the geometric area, unless otherwise specified.
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JOURNAL OF MEDICINAL CHEMISTRY
·
2025
·
IF 6.8
Lei Xu,Yaling Wang,Sangyu Hu,Yuzhu Pei,Chenliang Qian,Wenjie Xue,Gao Zhang,Song Wu,Xinxin Si,Xuming Deng,Jie Xia,Jianfeng Wang
To date, the abuse of antibiotics and a gradual decline in novel antibiotic discovery enlarge the threat of drug-resistant bacterial infections, especially methicillin-resistant Staphylococcus aureus (MRSA). Herein, inspired by the unique structures and antibacterial activities of 2-quinolones, a class of novel 2-quinolones with substituted pyridines was synthesized. Notably, compound 11, the derivative with a methylpyridine fragment, showed potent antibacterial and antibiofilm activities, especially for MRSA strains (MIC = 0.02–0.04 μg/mL). A mechanistic study of compound 11 revealed that the increase of intracellular ROS and acceleration of the TCA cycle, which reprogrammed the bacterial metabolism, eventually triggered membrane damage and bacterial death. Most importantly, compound 11, with antibacterial and anti-inflammatory properties, accelerated the reconstruction and healing of MRSA-infected cutaneous wounds by decreasing bacterial loads, attenuating inflammation, and promoting angiogenesis. Overall, these findings provide a novel multifunctional chemotype with broad-spectrum antibacterial activity and highlight a promising strategy for MRSA-infected wound healing.
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MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Ziwen Song,Qiqi Huang,Shizhao Zhang,Songlin Luo,Mengdie Su,Xin Yang,Shaopeng Wang,Liwei Wang
2-Aminophenol (2-AP) is an organic compound with antibacterial and antioxidant properties in cosmetics, detergents, dyes, and pharmaceuticals. In particular, human health and the environment can be significantly threatened when the concentration of phenolic substances in water reaches 0.1005 mg/L. Hence, there is an urgent need to develop a prompt and accurate analyzing method of 2-AP. To this end, Cu-MOF material was employed as a substrate, and its conductivity and catalytic properties were then enhanced by incorporating Tp-BD-DBd COF within the pores. This COF@MOF composite incorporation, named Tp-COF@Cu-BDC, introduced not only extensive π-conjugated systems but also the mutual electron-donating amino and carboxylate electron-withdrawing groups that may help improve the adsorption capability of 2-AP. Consequently, an increase in conductivity of the Tp-COF@Cu-BDC composite was achieved compared with the MOF monomer. At the same time, the fabricated sensor exhibited a broad detection range (2–250 μM), a low detection limit (0.597 μM), remarkable anti-interference capabilities, and a high recovery rate for 2-AP. Furthermore, the recovery experiment results have proved the actual samples’ detection capability based on our electrochemical sensor. Thus, it can be inferred that the COF@MOF composite-based electrochemical sensor is a highly effective platform for detecting 2-AP in environmental settings.
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Batteries-Basel
·
2025
·Vol. 11
·期 3
·83
·
IF 4.8
Yongli Tong,Baoqian Chi,Yu Jiang,Xiang Wu
It is crucial for energy storage devices to construct electrode materials with excellent performance. However, enhancing energy density and cycling stability for supercapacitors is a significant challenge. We successfully synthesized CoNi2S4@Ni(OH)2nanosheets on the surface of Ni foam substrate by a two-step hydrothermal approach. The obtained products exhibit a remarkable areal capacitance of 1534 F g−1at a current density of 1 A g−1. Moreover, even after 10,000 cycles, the specific capacitance remains 90% of its initial value, highlighting the exceptional long-term stability and durability. Furthermore, an asymmetric supercapacitor (ASC) device incorporating the CoNi2S4@Ni(OH)2material shows remarkable electrochemical performance. It delivers an energy density of 58.5 mW h g−1at a power density of 2700 W kg−1. The outstanding performance mainly arises from the selection of materials, the design of the structure, and the synergistic interaction between the materials. The result suggests that this material holds great potential as an energy storage material.
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ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
·
2024
·
IF 6.2
Yihan Hu,Yiming Sun,Haolin Zhang,Linghuan Luo,Haibin Wang,Ruili Zhang,Ming Ge
2-ethylhexyl diphenyl phosphate (EHDPHP) is a widely used organophosphorus flame retardant and plasticizer, which is commonly found in the environment. EHDPHP not only potentially harms the environment but also causes different degrees of damage to the organism. In this study, the duodenum of chicks was selected as the potential toxic target organ to explore the mechanism of duodenal injury induced by EHDPHP exposure. Ninety one-day-old healthy male chicks were selected and randomly divided into C1(control group), C2(solvent control group), L(800 mg/kg), M(1600 mg/kg), H(3200 mg/kg) according to different doses of EHDPHP after one week of environmental adaptation. The chicks were given continuous gavage for 14 d, 28 d, and 42 d. It was found that constant exposure to EHDPHP caused an increase in duodenal MDA content, a decrease in P-gp, SOD, GSH-Px activities, and a decrease in duodenal mucosal immune factor (sIgA, GSH-Px). The expression of sIgM and mucosal link proteins (CLDN, OCLN, ZO-1, JAM) decreased, and the expression of the inflammatory protein (NF-κB, COX2) in duodenal tissues was up-regulated. The results showed that continuous exposure to EHDPHP could cause duodenal oxidative stress, inflammation, and mucosal barrier damage in chicks, which provided a basis for studying the mechanism of toxic damage caused by EHDPHP in poultry.
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INORGANIC CHEMISTRY COMMUNICATIONS
·
2024
·
IF 4.4
Jianbo Ding,Ce Xu,Xianghong Li,Bingguang Zhang,Dingguo Tang
A cyclometalated ruthenium complex ( 1 ) using 2-phenylbenzimidazole as a C,N-ligand was developed as a colorimetric chemosensor to detect Ag + ions. Upon the addition of Ag + ions, the absorption spectra of complex 1 demonstrated no change in CH 3 CN solution. However, an excellent solution color change from dark-green to purple and absorption spectral change with a blue-shift of 27 nm (from 612 to 585 nm) were clearly observed after Ag + ions were added to the solution of 1 with 2-fold of fluoride (denoted as 1 + F − ). When Ag + ions were replaced by other common metal ions, the solution color changed from green to red. Therefore, the solution of 1 + F − can be used to distinguish Ag + from the other common metal ions. The absorption intensity at 612 nm exhibited a good linear correlation for the detection of Ag + ion from 0 to 4 µM with a detection limit of 0.34 µM. According to the absorption and 1 HNMR spectral changes of complex 1 , the reaction mechanism is proposed to be as a coordination between silver ion and the deprotonated nitrogen in imidazole. However, the interactions of other metal ions with 1 + F − are related to a proton transfer process.
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RENEWABLE ENERGY
·
2024
·
IF 9
Cuicui Wu,Meng Wang,Yunming Fang
The productive motivation of high-energy-density fuels from sustainable feedstocks has been prompted by environmental concerns and resource scarcities. To address this demand, here, the energy-rich C10 cycloalkanes were first afforded with biomass-derived 2-cyclopentenone (2CPE). Initially, bio-based 2CPE can be converted to tricyclo-diketones by (2 + 2) cycloaddition under UV irradiation or zeolite catalysis. The UV-light photocatalysis for dimerization of 2CPE to diketol-cycloadducts disclosed outstanding advantages of cost-effectiveness and feasibility than traditional zeolite-catalyzed manner, with a yield of 53.61 % at ambient temperature for 2 h. Despite the potential for high dimer yield (77.28 %) under thermo-catalysis of H-ZSM-5 zeolite, the reaction conditions (120 °C, 18 h) were found to be suboptimal. Subsequently, diketol-cycloadducts were selectively and efficiently hydrodeoxygenated to provide cyclopentane-based hydrocarbons using a Huang-Minlon methodology with a yield of 97.04 %, where the target components were directly distilled during the reaction. Specifically, the as-synthesized C10 cycloalkane mixture originated from 2CPE possess high density of 0.96 g mL −1 , large volumetric heat net of combustion (NHOC) of 40.02 MJ L −1 , along with low freezing point of −49 °C. These properties suggest that the bio-liquid cycloalkanes can be used as a standalone high-energy fuel or as a blending agent to enhance the performance of conventional jet fuels.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Ziyu Gan,Jun Wang
Plants exhibit rapid responses to biotic and abiotic stresses by releasing a range of volatile organic compounds (VOCs). Monitoring changes in these VOCs holds the potential for the early detection of plant diseases. This study proposes a method for identifying late blight in potatoes based on the detection of (E) -2-hexenal, one of the major VOC markers released during plant infection by Phytophthora infestans . By combining the Michael addition reaction with cysteine-mediated etching of aggregation-induced emission gold nanoclusters (Au NCs), we have developed a portable hydrogel kit for on-site detection of (E) -2-hexenal. The Michael addition reaction between (E) -2-hexenal and cysteine effectively alleviates the etching of cysteine-mediated Au NCs, leading to a distinct fluorescence color change in the Au NCs, enabling a detection limit of 0.61 ppm. Utilizing the superior loading and diffusion characteristics of the three-dimensional structure of agarose hydrogel, our sensor demonstrated exceptional performance in terms of sensitivity, selectivity, reaction time, and ease of use. Moreover, quantitative measurement of (E) -2-hexenal was made easier by using ImageJ software to transform fluorescent images from the hydrogel kit into digital data. Such method was effectively used for the early detection of potato late blight. This study presents a low-cost, portable fluorescent analytical tool, offering a new avenue for on-site detection of plant diseases.
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