International Journal of Applied Ceramic Technology
·
2025
·
IF 2.3
Wenying Jiang,Chuanjin Tian,Zhiyang Ju,Yumin Liu,Shaojian Fu,Wenyan Zhao,Zhipeng Xie
The non-radiative recombination loss at the interface is a huge obstacle to improving the photovoltaic performance of perovskite solar cells (PSCs), especially carbon-based PSCs (C-PSCs). Here, we propose a strategy for synergistic regulation of interface defects and carrier transport through functional groups of long-chain ammonium salt molecules to form 2D perovskite passivation layers by surface treatment with 5-aminovalerate hydroiodide (5-AVAI). The results indicate that the carboxyl group (–COOH) in 5-AVAI molecules can form coordination bonds with uncoordinated Pb 2+ ions, thereby anchoring to the surface of the perovskite film. Simultaneously, the electrostatic interaction between the amino group (–NH 3 + ) and I − ions in 5-AVAI inhibits the formation of iodide vacancies, enhances defect passivation, and improves the transport and transfer efficiency of interfacial carriers. The atmospherically generated 5-AVAI-modified C-PSCs exhibited an efficiency of 16.50% and retained 85% of their initial efficiency for 80 days in atmospheric environment.
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CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Yiyuan Peng,Mengbiao Liang,Ting Chen,Mengdi Zhao,Zhixiang Xie,Chunxian Guo
All-inorganic perovskite nanocrystals (CsPbX 3 NCs, X = Cl, Br, I) have emerged as promising candidates for applications in light-emitting diodes (LEDs), solar cells, photodetectors, and backlight displays, owing to their exceptional optoelectronic properties, including high photoluminescence quantum yield (PLQY), long carrier lifetimes, and narrow emission bandwidths. However, the intrinsic ionic nature of these nanocrystals renders them highly susceptible to environmental degradation, limiting their practical applications. Herein, we report the synthesis of CsPbBr 3 @MOF-5 composites through a physical mixing method: room-temperature supersaturated recrystallization of CsPbBr 3 NCs, followed by encapsulation within a hierarchical porous zinc-based metal-organic framework (MOF-5). By incorporating poly(ethylene oxide)-block-poly(propyleneoxide)-block-poly(ethylene oxide) Pluronic (P123) and 1,3,5-trimethylbenzene (TMB) as structure-directing agents, the pore architecture of MOF-5 was tailored to exhibit hierarchical porosity (2-35 nm), significantly enhancing both the PLQY and stability of CsPbBr 3 NCs. The CsPbBr 3 @MOF-5 composites achieved a remarkable PLQY improvement from 22% to 56%, retained 55% of their initial PL intensity after 60 days of ambient storage, and maintained 65% of PL emission under thermal stress (298-498 K). In contrast, pristine CsPbBr 3 NCs experienced complete quenching under identical conditions. Additionally, the composite exhibited superior resistance to anion exchange when combined with CsPbBr x I 3-x NCs. A white LED (WLED) device fabricated using CsPbBr 3 @MOF-5 composite and K 2 SiF 6 :Mn 2+ (KSF) red phosphor exhibited a luminous efficiency of 20.71 lm/W, a correlated color temperature (CCT) of 5486 K, and a broad color gamut covering 133.3% of the National Television Standards Committee (NTSC) standard, underscoring its potential for advanced lighting and display technologies.
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RUSSIAN JOURNAL OF APPLIED CHEMISTRY
·
2021
·Vol. 94
·期 9
·1313-1323
·
IF 0.85
Ma Yongwei,Zhao Xiangxiang,Sun Xueni,Wang Jun,Shao Hui,Yao Jianfeng
Abstract The present study focuses on the improvement of desulfurization rate in the oxidative desulfurization using hierarchical CoAPO-5 molecular sieve as a catalyst by response surface method. Firstly, the catalytic properties of microporous and hierarchical CoAPO-5 were compared, and hierarchical CoAPO-5 with better catalytic performance was selected for further investigation. Then, the reaction conditions were further optimized by response surface method. In the response surface method, five factors including reaction temperature, reaction time, catalyst dosage, extractant dosage and oxidant dosage affecting desulfurization rate were screened and the conditions for oxidative desulfurization were optimizing by applying Box–Behnken design. The fitting second-order polynomial equation, which was based on experimental results, was employed to predict desulfurization rate and verified by model diagnostic plots. According to the T and P values in the analysis of variance, it is found that the fitting model is significant, and the interaction between reaction temperature, reaction time, and extractant dosage is significant. The optimal conditions for oxidative desulfurization were found through three-dimensional surface and two-contour graph. In this case, the desulfurization rate reached 79.8%.
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Catalysts
·
2022
·Vol. 12
·期 7
·694
·
IF 4.501
Ji Qi,Ziying An,Xiao Chen,Chuang Li,Yan Du,Xiuhong Zhang,Changhai Liang
The classic acrylonitrile (AN) electrohydrodimerization (EHD) to adiponitrile (ADN) process produces oxygen on the anode side. The oxygen evolution reaction (OER) is energy consuming, and O2is of low value and has security issues while directly contacting with organic molecules. Herein, by replacing OER with 5-hydroxymethylfurfural oxidation reaction (HMFOR), we report paired electrolysis of AN and HMF for simultaneous generation of ADN and 2,5-furandicarboxylic acid (FDCA). On the anode side, the electrodeposited amorphous NiMoP film-covered nickel foam efficiently boosted HMFOR activity by enlarging the electrochemically active surface area (ECSA) via in situ selective removal of Mo and P on the surface. On the cathode side, addition of dimethylformamide (DMF) as a cosolvent enhanced the reaction efficiency of ANEHD by forming a single-phase electrolyte that offers better interaction between AN and the electrode. The ANEHD–HMFOR paired system shows excellent generation rates of FDCA (0.018 gFDCA·h−1·cm−2) and ADN (0.017 gADN·h−1·cm−2) at a high cell current (160 mA). An amount of 1 kWh of electricity can produce 2.91 mol of ADN and 0.53 mol of FDCA with 107.1% Faraday efficiency.Keywords:paired electrolysis;5-hydroxymethylfurfural oxidation;acrylonitrile electrohydrodimerization;adiponitrile;2,5-furandicarboxylic acid;dimethylformamide cosolvent
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COMBINATORIAL CHEMISTRY & HIGH THROUGHPUT SCREENING
·
2022
·Vol. 25
·期 6
·1031-1039
·
IF 1.714
Chen Genqiang,Zhu Lina,Xia Yanfei,Yang Jinming,Zhang Song,Li Yuanhao,Guo Xiaolong,Sun Di,He Jiaxuan,Tian Yuee,Liu Shengming,Jiang Jia,Che Zhiping
Background: Developing the high-efficiency and low-risk small-molecule greennematocide is the key of effective control of the nematodes. Paeonol, is a naturally occurring phenolic compound, isolated from the root bark of Paeonia suffruticosa and the whole plant of Cynanchum paniculatum.
Due to its crucial phenolic ketone skeleton, modern biological science research has indicated that paeonol has a wide range of biological activities. Methods: The structural modification of paeonol into paeonol carbonyl hydrazone derivatives is a potential approach for the development
of novel nematodes, which showed more toxicity than paeonol. However, there are no reports on the nematicidal activity of paeonol carbonyl hydrazone derivatives to control Heterodera glycines. Results: We always endeavor to discover and develop biorational natural products-based pesticidal
agents, 4 significant intermediates and 21 novel 3/5(3,5)-(di)nitro/chloropaeonol carbonyl hydrazone derivatives were prepared, and their structures well characterized by 1H NMR, HRMS, MS, and mp. Due to the steric hindrance, the substituents on the C=N double bond of
all hydrazine compounds adopted E configuration. Results of nematicidal activity revealed that, among all compounds, especially 5-nitropaeonol (5) and 3,5-dinitropaeonol (7) displayed the most potent nematicidal activity H. glycines in vivo with LC50 values of 0.0323
and 0.0367 mg/mL, respectively. Conclusion: It suggested that for the 3/5(3,5)-(di)nitro/chloropaeonol carbonyl hydrazone derivatives, a nitro group introduced at C5 position of 1 was necessary for obtaining the potent compound as nematicidal agents. These preliminary results will pave
the way for further modification of paeonol in the development of potential new nematicides.
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PubMed
高影响因子
TECHNOLOGY IN CANCER RESEARCH & TREATMENT
·
2020
·
IF 2.074
AiJun Huang,LiPing Chen,YiMing Wang,ShuQiang Ma,Song Jin,Hanzhou Cai,Xingzhong Huang,Hongbo Zhang,ZengRong Wang,Kun Lin,Fangsiyu Lin
Background:5-fluorouracil (5-FU) is a widely used drug for cancer treatment, but its effect and underlying mechanisms on osteosarcoma (OS) cells remain unclear.Methods:U2OS and MG63 cells were treated with 0, 50, 100, and 500 μM 5-FU. MTS and flow cytometry were used to examine the effect of 5-FU on cell viability and apoptosis, respectively. Circular RNA (circRNA) expression was detected using RNA sequencing and quantitative real-time PCR (qPCR). Differentially expressed circRNAs were further subjected to the Kyoto Encyclopedia of Genes and Genomes (KEGG) and gene ontology (GO) analysis to predict their functions. A circRNA–miRNA–mRNA interaction network was generated to analyze the regulatory networks of 5-FU–induced differentially expressed circRNAs. Western blotting (WB) was used to verify the protein in the downstream of circRNAs.Results:5-FU inhibited the cell viability of the MG63 cells in a concentration-dependent manner. The most significant effect was observed in the cells treated with 500 μM 5-FU. Apoptosis was also increased in the MG63 cells after 500 μM 5-FU treatment for 3 days. RNA sequencing results showed that 183 differentially expressed circRNAs (172 upregulated and 11 downregulated) in 5-FU–treated cells. KEGG and GO analysis showed that the differentially expressed circRNAs were primarily enriched in proliferation-, apoptosis-, and metabolism-related functions. qPCR was used to verify the most upregulated and downregulated circRNAs. The circRNA–miRNA–mRNA interaction network showed that these 8 circRNAs had a sizable regulatory network that links a series of genes involved in tumor suppression.Conclusion:5-FU treatment resulted in the differentially expressed circRNAs that were proliferation- and apoptosis-associated and were involved in the 5-FU–induced inhibition of tumor proliferation in OS cells.
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PubMed
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2017
·Vol. 314
·期 1
·59-67
·
IF 1.282
Liu Zhanxiang,Dong Yang,Liao Jiali,Li Xingliang,Yang Jijun,Yang Yuanyou,Luo Shunzhong,Liu Ning
A novel extractant, 5-octyloxymethyl-7-bromo-8-quinolinol (HBrO 8 Q), was employed to extract Pd(II) from low-acidity aqueous solution. The extraction behaviors indicated that HBrO 8 Q had high extraction efficiency and selectivity for Pd(II) under the experimental conditions, and the stoichiometry of Pd(II) with HBrO 8 Q was found to be 1:1 by means of mole ratio method and Job’s method. The thermodynamic study indicated that the extraction process was endothermic and spontaneous. Additionally, complete back extraction of palladium could be achieved by using acidic thiourea solution.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Yi Yang,Yinuo Wang,Chenyang Zheng,Haowen Lin,Ruikun Xu,Huiqi Zhu,Lulu Bao,Xuhui Xu
High-efficiency phosphate removal from wastewater is crucial for protecting environmental stability. In this work, a lanthanum carbonate grafted ZSM-5 adsorbent (LC-ZSM-5) was prepared and optimized by a Box-Behnken design. The higher temperature, molar ratio of urea to lanthanum and initial lanthanum concentration are beneficial for LC-ZSM-5 synthesis, and the adsorption capacity of LC-ZSM-5 under optimistic conditions was 91.2 mg-PO 4 3- /g. The growth mechanism indicates that the LC particles grow larger with synthesis time and finally agglomerate, and 12 h is the best synthesis time. The thermodynamic results show that phosphate adsorption over LC-ZSM-5 is a spontaneously exothermic and combined physicochemical adsorption process. Kinetic studies suggest that higher temperatures help increase the phosphate adsorption rate, and chemical adsorption plays an important role during adsorption with an activation energy E a of 42.7 kJ/mol. The adsorption mechanism of the phosphate uptake process includes electrostatic attraction and ligand exchange, through which LC is changed to lanthanum phosphate (LP) during adsorption. Finally, the regeneration study revealed that LC-ZSM-5 still exhibited a high adsorption capacity after 5 cycles, showing its satisfactory regeneration ability and potential industrial application.
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高影响因子
MOLECULES
·
2021
·Vol. 26
·期 23
·7307
·
IF 4.412
Dong Zhang,Mojiao Zhao,Yumei Li,Dafang Zhang,Yong Yang,Lijing Li
Xanthine oxidase (XOD) inhibition has long been considered an effective anti-hyperuricemia strategy. To identify effective natural XOD inhibitors with little side effects, we performed a XOD inhibitory assay-coupled isolation of compounds fromSmilacis Glabrae Rhizoma(SGR), a traditional Chinese medicine frequently prescribed as anti-hyperuricemia agent for centuries. Through the in vitro XOD inhibitory assay, we obtained a novel XOD inhibitor, 5-O-caffeoylshikimic acid (#1, 5OCSA) with IC50of 13.96 μM, as well as two known XOD inhibitors, quercetin (#3) and astilbin (#6). Meanwhile, we performed in silico molecular docking and found 5OCSA could interact with the active sites of XOD (PDB ID: 3NVY) with a binding energy of −8.6 kcal/mol, suggesting 5OCSA inhibits XOD by binding with its active site. To evaluate the in vivo effects on XOD, we generated a hyperuricemia mice model by intraperitoneal injection of potassium oxonate (300 mg/kg) and oral gavage of hypoxanthine (500 mg/kg) for 7 days. 5OCSA could inhibit both hepatic and serum XOD in vivo, together with an improvement of histological and multiple serological parameters in kidney injury and HUA. Collectively, our results suggested that 5OCSA may be developed into a safe and effective XOD inhibitor based on in vitro, in silico and in vivo evidence.Keywords:Smilacis Glabrae Rhizoma;5-O-caffeoylshikimic acid;potassium oxonate;hyperuricemia;XOD inhibitor
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PubMed
高影响因子
CATALYSIS TODAY
·
2018
·
IF 4.667
Chuanhui Zhang,He Huang,Genqin Li,Lei Wang,Liang Song,Xuebing Li
Series of 10% MnO x /HZSM-5 catalysts with different zeolitic Si/Al ratios were prepared by an incipient impregnation method and evaluated for the catalytic oxidation of toluene. Characterization results indicated that all catalysts exhibited similar textural and redox properties but variable surface acidity. Catalytic testing results showed that the catalytic activities over these catalysts followed a descending order of 10% MnO x /HZSM-5-25 > 10% MnO x /HZSM-5-50 > 10% MnO x /HZSM-5-75, where 10% MnO x /HZSM-5-25 exhibited the optimum catalytic activity and excellent catalytic durability under dry condition and good water-resistant ability under humid condition. A good linear relationship between the toluene conversion efficiency (TOF Mn ) and the total acidity over MnO x /HZSM-5 catalysts was obtained, which revealed the crucial role and promotional effect of zeolitic acidity acting as a promoter on the catalytic activity for toluene oxidation.
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高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2017
·
IF 3.181
Miao Zuo,Kai Le,Zheng Li,Yetao Jiang,Xianhai Zeng,Xing Tang,Yong Sun,Lu Lin
5-Hydroxymethylfurfural (5-HMF) is one of the most important platform chemicals in biorefinery. In this work, an effective and green route for 5-HMF production in deep eutectic solvents (DESs) was demonstrated using extremely low concentration of hydrochloric acid as the catalyst. Moreover, the DES/acetonitrile (MeCN) biphasic reaction system adopted in this research showed excellent recyclability, which could be directly reused for multiple times without downgrading of the 5-HMF yield.
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高影响因子
CERAMICS INTERNATIONAL
·
2025
·Vol. 51
·期 25
·46911-46917
·
IF 5.6
Pengxin Xu,Zili Zhou,Yaqi Wang,Ergeng Zhang,Zhanyong Wang,Ding Zhou
Highly transparent ceramics of Zr 4+ and Sc 3+ ions co-doped 5 at.%Yb: Lu 2 O 3 were prepared by using wet-chemical precipitant method combined with pressureless sintering in flowing H 2 atmosphere, where Zr 4+ was induced as the sintering aid and Sc 3+ as the band regulators to realizing spectral broadening of Yb:Lu 2 O 3 . The microstructure, broad emission band, PL spectrum and optical properties of the Zr 4+ and Sc 3+ co-doped 5 at.%Yb:Lu 2 O 3 ceramic samples were investigated by SEM, XRD, PL spectrum and other characterization methods. The results indicate that the maxim FWHM of the excitation emission spectrum of Yb:(Lu X Sc 1-X ) 2 O 3 ceramic is 15 nm when x = 0.5. Furthermore, the incorporation of Zr 4+ at a doping concentration of 2 at.% alleviated the microstructural inhomogeneity of the Yb:(Lu 0.5 Sc 0.5 ) 2 O 3 ceramics and significantly reduced the grain size, resulting in high transparency of up to 81.2 % at 1200 nm wavelength. These findings demonstrate a great potential of this ceramic for applications in ultrafast short pulse laser media.
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