Journal of Materials Chemistry C
·
2018
·Vol. 6
·期 36
·9778-9785
·
IF 5.976
Qiang Zhang,Yan Xu,Zhuopeng Wang,Xia Zhang,Zhiguo Xia
Dual-emitting hierarchical Bi4(GeO4)3/Zn2GeO4 hybrid microspheres have been prepared by a facile one-pot hydrothermal synthesis of Zn2GeO4 with the addition of pre-synthesized BiOBr nanoplates. The phase composition and morphology evolution of the Bi4(GeO4)3/Zn2GeO4 composites are investigated depending on the amounts of BiOBr precursor used in the hydrothermal process. The photoluminescence peaks at 412 and 532 nm for the as-prepared Bi4(GeO4)3/Zn2GeO4 are ascribed to Bi3+ emission and defect-related centers in the Zn2GeO4 component, respectively, and the features show a quenching response toward a temperature increase. The fluorescence intensity ratio (FIR) of Bi3+: 3P1–1S0 (412 nm) to the defect emission center of Zn2GeO4 (532 nm) can be exploited as a self-calibrated temperature index for potential thermometer applications. The maximum relative sensitivity (Sr) is 3.96% °C−1 in the temperature range of 20 °C to 100 °C. This work expands the rational design strategy for controllable particle morphology and structure modulation, and further explores their synergetic distinctive properties and potential optical sensor applications.
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DALTON TRANSACTIONS
·
2024
·Vol. 53
·期 35
·14648-14655
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IF 3.5
Hong Su,Cong Dou,Fan Dou,Wen Li,Jiachen Li,Xiaolian Chao,Zupei Yang,Xiaoming Wang,Huan Jiao
The efficiency of silicon solar cells is still lower than theoretical values, partly due to their inability to utilize the ultraviolet and infrared portions of the solar spectrum. Herein, a novel method using a KCa2Mg2(VO4)3 phosphor with a down-shift effect to improve the photovoltaic performance of silicon solar cells and enhance the utilization of UV light in standard p-type silicon solar cells is proposed. The synthesized phosphors were mixed with an ethylene vinyl acetate (EVA) copolymer and pressed into a film, which was subsequently encapsulated in monocrystalline silicon solar cells. The results show that the addition of this film notably enhanced the photovoltaic performance of the silicon solar cells; the current density was increased by 2.89% (from 33.20 to 34.16 mA cm−2), and the photovoltaic conversion efficiency was improved by 5.69% (from 15.11% to 15.97%) at the optimal concentration compared to bare cells.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2018
·
IF 3.779
Zhi Zhou,Simin Gu,Yongli Zhang,Fangfang Wu,Nan Zhou
NASICON-type NaTi 2 (PO 4 ) 3 has been acknowledged as a promising anode for energy storage due to high ion conductivity and low cost. Nevertheless, intrinsic low electrical conductivity of NaTi 2 (PO 4 ) 3 and low stability in aqueous electrolyte limit its further applications in aqueous lithium rechargeable battery. In this paper, polyaniline as carbon and nitrogen sources was employed to synthesize nitrogen-doped carbon coated NaTi 2 (PO 4 ) 3 (NTP-P) composite by sol-gel approach and following calcination treatment. The loose and carbon-coated structure endows NTP-P with good structure stability and improved electrochemical kinetics . Compared with glucose-derived carbon-coated NaTi 2 (PO 4 ) 3 composite, NTP-P exhibits superior rate and cycling performance. NTP-P with proper carbon content delivers the discharge capacity of 119.4 and 83.4 mAh g −1 at rate of 0.2 and 15 C, and its capacity retention can maintain 85.8% after 1000 cycles at 5 C. This research reveals that the integration of carbon coating and nitrogen doping by using polyaniline give an excellent method to enhance the electrochemical properties of electrode materials.
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APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Keyi Sun,Yuxuan Liu,Wenbin Fei,Yian Wang,Huazhang Guo,Kexin Rao,Mengting Deng,Yulei Sui,Ling Wu
Na 4 MnCr(PO 4 ) 3 , a manganese-based NASICON-type phosphate cathode material, is attracted considerable attention due to its high voltage and energy density. However, its practical application is hindered by poor electronic conductivity and inferior sodium ion diffusion kinetics. In this study, trace La 3+ is utilized to optimize the lattice structure of Na 4 MnCr(PO 4 ) 3 due to its unique energy level structure. La 3+ doping significantly enhances the local environment of the Mn-O bond and stabilizes the lattice structure by improving covalency, thereby mitigating Mn dissolution during charge–discharge cycles. Additionally, the large ionic radius of La 3+ promotes the sodium ion transport kinetics by expanding the cell volume and facilitating rapid sodium storage. As a result, the optimal Na 4 MnCr 0.995 La 0.005 (PO 4 ) 3 /C sample demonstrates an impressive initial discharge specific capacity of 124.5 mAh g −1 at 0.1C and superior cycling stability with a capacity retention of 70.2 % after 500 cycles at 5C. Furthermore, density functional theory calculations indicate that La 3+ doping can enhance conductivity and reduce the energy barrier for sodium ion diffusion. This study presents an effective and cost-efficient doping strategy for modifying high-energy density NASICON-type phosphate cathode materials, showing promising potential in the field of sodium ion batteries.
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Materials Chemistry Frontiers
·
2025
·
IF 6.4
Qing Li,Weiping Guo,Binqiang Chai,Kang Xu,Weijiang Hu,Xueming Su,Huaixin Wei,Hongbo Geng,Jun Yang,Zhong-Zhen Luo
An innovative SnPS 3 @carbon nanofibers (CNFs) composite anode was successfully synthesized through an integrated electrospinning and thermal phosphosulfuration strategy. Comprehensive structural characterization confirms the uniform dispersion of Sn, P, and S elements within a nitrogen-doped porous carbon matrix, forming an interconnected three-dimensional conductive network. This architecturally optimized design significantly enhances electrical conductivity while providing abundant accessible active sites for efficient sodium ion adsorption and storage.Electrochemical evaluation demonstrates exceptional sodium storage performance: the SnPS 3 @CNFs anode delivers a remarkable reversible capacity of 448.14 mA h g⁻¹ after 980 cycles at an ultrahigh current density of 10 A g⁻¹, representing an enhancement over conventional SnS₂@CNFs and Sn₄P₃@CNFs counterparts.Furthermore, full-cell configuration with a Na₃V₂(PO₄)₃ (NVP) cathode maintains a high reversible capacity of 196.3 mA h g⁻¹ following 200 cycles at 1 A g⁻¹, confirming excellent practical compatibility. The synergistic integration of outstanding cyclability, superior rate capability, and structural integrity establishes this composite as a promising high-performance anode material for next-generation sodium-ion batteries, particularly suited for high-power energy storage applications.
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JOURNAL OF STEROID BIOCHEMISTRY AND MOLECULAR BIOLOGY
·
2025
·
IF 2.5
Xiaoli Liu,Shan Wang,Chuangfu Kuang,Yuwen Deng,Shuaicai Yuan,Juying Zou
We aim to explore the key metabolic components and underlying mechanisms of the Bushen Huoxue Formula (BH) in treating Osteoarthritis (OA). The mouse knee OA model was constructed using the destabilization of the medial meniscus method. OA mice were orally administered the BH. Mouse cartilage damage was assessed. High performance liquid chromatography-tandem mass spectrometry (HPLC-MS), network pharmacology analysis and molecular docking were employed to analyze the serum metabolite components and target protein of BH. After lipopolysaccharide (LPS) treatment, different concentrations of β-Estradiol 3-acetate were added to primary chondrocytes. Flow cytometry was utilized for detecting cell apoptosis. The Ubiquitin-Specific Protease 13 (USP13)/Toll-like Receptor 4 (TLR4)/Myeloid Differentiation Primary Response Protein 88 (MYD88)/NF-κB pathway and the TLR4 ubiquitination levels were assessed using immunological quantification and biochemical methods. Relative to normal mice, OA mice exhibited decreased knee joint cartilage thickness and increased inflammatory damage. BH treatment reversed these effects. Furthermore, BH enhanced TLR4 ubiquitination. Estradiol acetate was identified as the metabolic component of BH that alleviates OA. Estradiol acetate and its subtype molecule β-Estradiol 3-acetate could bind to the USP13 protein. The β-Estradiol 3-acetate concentration-dependently decreased the elevated levels of USP13, TLR4, MYD88, p-p65/p65 in chondrocytes induced by LPS, while increasing the TLR4 ubiquitination. β-Estradiol 3-acetate reversed LPS-induced chondrocyte apoptosis and elevation of inflammatory factors. Moreover, USP13 overexpression abolished the protective effects of BH and β-Estradiol 3-acetate against LPS-induced chondrocytes. In Conclusion, the BH metabolite β-Estradiol 3-acetate promotes TLR4 ubiquitination to relieve inflammation and apoptosis in OA chondrocytes by inhibiting USP13.
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CHEMISTRY-A EUROPEAN JOURNAL
·
2025
·
IF 3.7
Hui Guo,Shaoshuang Zhu,Zhenghan Zhang,Lu Pan,Huimin Jiang,Nasir A. Siddiqui,Aslam Khan,Jianjian Lin
Constructing non-precious metal electrocatalysts with good hydrogen evolution activity is crucial for the hydrogen evolution reaction (HER) in acidic media. The synergistic optimization of the water dissociation and hydrogen desorption steps presents a challenge for the HER. Here, we have synthesized phosphorus-doped tungsten trioxide with oxygen vacancies (P-WO3-x) using a simple but effective hydrothermal reaction followed by calcination annealing. Interestingly, the P-WO3-x material exhibits unique characteristics that set it apart from conventional tungsten oxide-based electrocatalysts. The introduction of oxygen vacancies and phosphorus doping creates an optimal structure that significantly improves the electronic properties and the catalytic sites. The oxygen vacancies enhance the material’s ability to adsorb and activate water molecules, while phosphorus doping further modifies the electronic structure, facilitating more efficient hydrogen desorption. Meanwhile, the catalyst demonstrates a favorable urchin-like morphology with excellent supportability. Remarkably, the P-WO3-x electrocatalyst demonstrates excellent HER performance and excellent durability. We indicate that P-WO3-x exhibits a small overpotential (155.42 mV at -10 mA cm-2), a low Tafel slope (74.97 mV dec-1), and excellent durability over 12 hours. This work presents a significant advance for the development of tungsten oxide-based electrocatalysts with anion doping and oxygen vacancies for HER in acidic media.
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RSC Advances
·
2025
·Vol. 15
·期 26
·21133
·
IF 4.6
Jing Chen,Xi Chen,Jinsong Song,Hongliu Zhang,Hongjiang Yang,Jinhui Feng,Qiaqing Wu,Dunming Zhu
Chiral 3-substituted-4-hydroxypiperidines are highly valuable in pharmaceutical applications due to their diverse and potent biological activities. Biocatalytic ketone reduction by carbonyl reductases represents a promising approach for synthesizing these compounds. In this study, two structurally similar yet stereoselectively distinct carbonyl reductases, HeCR and DbCR, were identified. Both enzymes exhibited exceptional catalytic performance, with >99% enantiomeric excess (ee) and >99% conversion rate in the reduction of tert -butyl 4-oxo-3-phenylpiperidine-1-carboxylate (1a). We found that 1a exhibits a relatively low rate of racemization under the mild reaction conditions. Subsequently, analogs of 1a were synthesized and reduced with high enantioselectivity (ee > 99%) using HeCR and DbCR. Carbonyl reductases demonstrated excellent catalytic activity and stereoselectivity in the synthesis of 3-substituted-4-hydroxypiperidines with dual chiral centers, underscoring their potential for pharmaceutical applications. Chiral 3-substituted-4-hydroxypiperidines are highly valuable in pharmaceutical applications due to their diverse and potent biological activities.
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FOOD CHEMISTRY
·
2019
·
IF 5.399
Yuanqi Lv,Lin Chen,Haizhou Wu,Xinglian Xu,Guanghong Zhou,Beiwei Zhu,Xianchao Feng
The quality of meat products is influenced by protein oxidation. Understanding the effects of antioxidant polyphenols and oxidizing lipoperoxides on myofibrillar proteins is essential for controlling the quality of meat products. This study was designed to investigate the epigallocatechin-3-gallate (EGCG)-mediated formation of myofibrillar protein emulsion gels under malondialdehyde (MDA)-induced oxidative stress. Low MDA concentrations (3 and 6 mM) improved the water-holding capacity, strength, elasticity, and emulsifying properties of gels due to the enhanced protein-protein interactions via MDA. The addition of EGCG reduced the overall properties of the emulsion gel due to further modification of the proteins. At a high concentration of MDA (12 mM), there was excessive cross-linking and unfolding of myofibrillar proteins, which led to a compact gel structure, and reduced the overall properties of the gel. In this situation, the addition of EGCG protected myofibrillar proteins from modifications induced by MDA and improved the quality of emulsion gels.
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ACTA DIABETOLOGICA
·
2024
·
IF 3.1
Zhang Ling,Zhao Jing,Peng Zhou,Zhang Zhongxiao,Huang Shan,Dong Xiaohua,Gao Jianfang,Guo Xirong
Background Obesity, defined as excessive or abnormal body fat accumulation, which could significantly increase the risk of cardiovascular disease, type 2 diabetes mellitus (T2DM) diseases and seriously affect people’s quality of life. More than 2 billion people are overweight, and the incidence of obesity is increasing rapidly worldwide, it has become a widely concerned public health issue in the world. Diverse evidence show that active metabolites are involved in the pathophysiological processes of obesity. Aims However, whether the downstream catabolite of tryptophan, 3-indole acrylic acid (IA), is involved in obesity remains unclear. Methods We collected the samples of serum from peripheral blood of obesity and health controls, and liquid chromatography–mass spectrometry (LC-MS) was performed to identify the plasma levels of IA. Additionally, we verified the potential benefits of IA on human preadipocytes and HFD- induced zebrafish by cell viability assay, flow cytometry assay, Oil red O staining, total cholesterol (T-CHO), triglyceride (TG) and nonesterified free fatty acids (NEFA) measurements and Nile Red staining. RNA-Seq, functional analysis and western blot revealed the mechanisms underlying the function of IA. Results We found that the content of IA in peripheral blood serum of overweight people was significantly lower than that of normal people. In addition, supplementation with IA in zebrafish larvae induced by a high fat diet (HFD) dramatically reduced HFD induced lipid accumulation. IA had no effect on proliferation and apoptosis of preadipocytes, but significantly inhibited adipogenesis of preadipocytes by down-regulate CEBPα and PPARγ. RNA-Seq and functional analysis revealed that IA regulated the adipogenesis of preadipocytes through stimulate the phosphorylation of STAT1. Conclusions Taken together, IA has been identified as a potent metabolite for the prevention or treatment of obesity. Graphic Abstract
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MOLECULES
·
2025
·Vol. 31
·期 1
·76
·
IF 4.6
Xilin Bai,Jing Xiao,Bingqi Du,Duidui Liu,Yanzhuo Wang,Shujing Shi,Jing Ge
Understanding the influence of solvent environments on the excited-state charge transfer process remains a fundamental question in molecular photophysics and photochemistry. While twisted intramolecular charge transfer (TICT) is crucial in determining fluorescence efficiency and photostability, the combined effects of solvent polarity and hydrogen bonding interactions are still elusive. Here, we employ steady-state and femtosecond transient absorption (fs-TA) spectroscopy with density functional theory (DFT) calculations to investigate the excited-state dynamics of 7-(diethylamino)coumarin-3-carboxylic acid (7-DCCA) in different solvents. Our findings reveal that in highly polar solvents with strong hydrogen-donating and hydrogen-accepting capabilities, 7-DCCA undergoes significant TICT formation, resulting in fluorescence quenching. Conversely, in environments with low polarity or weak hydrogen-bonding interactions, this transformation is largely suppressed. Quantitative correlation analysis utilizing the Kamlet–Taft and Catalán four-parameter models further elucidates the synergistic role of solvent polarity and specific hydrogen-bonding parameters in modulating the steady-state spectral behavior of 7-DCCA. This study provides microscopic insights into solvent–charge transfer interactions and establishes a general framework for enhancing the luminescence efficiency and structural robustness of organic optoelectronic materials through strategic solvent engineering.
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CHEMICO-BIOLOGICAL INTERACTIONS
·
2022
·
IF 5.168
Liangping Li,Wenqing Du,Hui Wang,Yufei Zhao,Zetian Huang,Yan Peng,Shulan Zeng,Guohai Zhang
p53 inactivation is a common feature in non-small cell lung cancer (NSCLC) resulting in NSCLC malignant transformation . Targeting serine 392 phosphorylation to restore p53 anticancer activity has proven to be an effective therapeutic strategy against NSCLC. A synthetic p53 activator, NA-17, has been developed that shows promise in preclinical models of NSCLC. However, NA-17 exhibits limited therapeutic efficacy in oncogene-driven tumors as well as relatively high toxicity to normal cells. It is possible that high efficiency and low toxicity p53 activators can be obtained by optimizing the leading molecule. Here, we performed high-throughput screening of compounds optimized based on NA-17 to identify new p53 activators. Two promising candidates named MX-C2 and MX-C3 were identified, both exhibited considerable therapeutic efficacy in oncogene-driven tumor models. Similar to NA-17, MX-C2/3 induced p53 activation via phosphorylating serine-392 without DNA damage. Both compounds showed broad antitumor activity in NSCLC cells and limited toxicity in normal cell lines. Moreover, MX-C2/3 suppressed tumor progression by arresting the cell cycle at G2/M phase, exhibiting a different mechanism of cell cycle arrest than NA-17. In addition, MX-C2/3 promoted the enrichment of p-p53 (s392) in mitochondria, leading to the conformational activation of Bak for cell apoptosis, which is consistent with NA-17. Finally, we demonstrated that MX-C2 significantly inhibited tumor growth without obvious systemic toxicity in oncogene-driven HCC-827 xenograft models. Collectively, we report two p53 activators with high-efficiency and low-toxicity that target p53 serine 392 phosphorylation for anticancer translational investigation.
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