JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2025
·
IF 4.1
Zikang Hou,Baogang Zhang,Xia Li,Yuanjie Liang
Tailoring a highly active interlayer in Pd electrodes is critical for determining electrode performance and stability. In this study, an active Cu-porphyrin interlayer is electrodeposited onto the sponge nickel (SN) skeleton. The modified sponge nickel is subsequently used to support Pd particles and fabricate an effective Pd/Cu-P/SN composite electrode. Compared with the initial Pd/SN electrode, the increase in dechlorination efficiency is 3.59 times for the Pd/Cu-P/SN electrode. Furthermore, substantial improvements in both mass activity and current efficiency are achieved, with respective increases of approximately 14.2-fold and 4.2-fold relative to the untreated electrode. These significant enhancements are ascribed to the well-designed active Cu-porphyrin interphase. Specifically, the Cu-porphyrin interlayer on the SN skeleton provides an enlarged specific surface area, thus accommodating a greater dispersion of Pd particles. Additionally, the confinement of Pd particles on Cu-porphyrin regions leads to the establishment of Pd Cu interfaces, and this interfacial intimacy expedites the evolution of active hydrogen, leading to a high electrocatalytic removal rate even at an elevated 4-chlorophenol concentration. The Pd/Cu-P/SN composite electrode presented here shows a great application potential for the electrocatalytic treatment of organic chlorophenol wastewater, which also paves a new avenue for enhancing electrode properties through rational introducing of metal-porphyrin interphase.
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DOI
高影响因子
Molecular Catalysis
·
2024
·
IF 3.9
Weiyou Zhou,Jiayin Huang,Anwei Wang,Jia Cui,Jie Yao,Tao Hou,Shuliang Ji,Mingyang He,Zhonghua Sun
An efficient heterogeneous catalytic system for the [4 + 2] annulation reactions between tertiary anilines and tetrahydrofuran has been developed based on CuCoFe layered double oxide in the study. Cu + species was believed to play the crucial role in the catalytic transformation, and synergistic effect between Cu and CoFe species was observed in the reaction. Various tertiary anilines could be tolerated by the present catalytic system. A series of control experiments were conducted to determine the reaction intermediates. A distinctive reaction mechanism has been described for the annulation reaction based on these results and kinetic isotopic effects experiments.
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高影响因子
FITOTERAPIA
·
2025
·
IF 2.6
Zhong He,Hui Long,Hongyue Ma,Wanrong Ran,Yinhong Song,Wenjuan Shang,Junhui Wang,Ye Qin,Zhangshuang Deng
Triple-negative breast cancer (TNBC) is the most aggressive and malignant breast cancer. Ferroptosis is an oxidative, iron-dependent form of regulated cell death. Ferroptosis-targeted therapies is a promising approach to improving treatment outcomes of TNBC. Combining death pathway inhibitors with relevant indices for ferroptosis and LipROS, this study uncovered that a natural product of 4, 9-dihydroxy- α -lapachone (DLN) from Catalpa bungei “jinsi” exhibited in vitro and in vivo inhibitory activity against TNBC via ferroptosis. The molecular mechanism is an activation of the FTH1 led to iron overload, and then inhibition of cysteine-glutamate antiporter (system Xc − ) and GPX4, which further sensitized TNBC cells to ferroptosis. This study clarified the pathway of DLN-induced cell death in TNBC treatment and exhibited its potential as therapeutic agent for TNBC.
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DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2017
·
IF 3.387
Hui Mao,Meihong Liu,Zhenqian Cao,Chunguang Ji,Ying Sun,Daliang Liu,Shuyao Wu,Yu Zhang,Xi-Ming Song
Novel poly(4-vinylphenylboronic acid) (P4VPBA) functionalized polypyrrole/graphene oxide (PPy/GO) nanosheets , which combined the advantages of GO, PPy and PBA groups, were successfully prepared by a simple polymerization of 4-vinylphenylboronic acid (4VPBA) on the surface of pre-treated PPy/GO containing vinyl groups. Because of the synergistic effects of GO with excellent 2D structures and large surface area, PPy with good electronic conductivity and PBA with high recognition capability, P4VPBA/PPy/GO modified glassy carbon electrode presented excellent electrochemical sensing capabilities toward catechol (CC) and hydroquinone (HQ) with good stability, high sensitivity and selectivity, especially giving a large anodic peak potential difference between CC and HQ enough to well distinguish and simultaneously determine the two dihydroxybenzene isomers in their mixture. It is found that PBA groups on the surface of P4VPBA/PPy/GO nanosheets played an essential role for the discrimination and simultaneous electrochemical determination of CC and HQ, which may be due to the selective formation of stable cyclic esters by the covalent interaction between PBA groups and related molecules with a cis -diol in an alkaline aqueous solution. Therefore, P4VPBA/PPy/GO nanosheets can act as a good electrode material for building a steady electrochemical sensor for detecting the two dihydroxybenzene isomers with high sensitivity and selectivity.
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高影响因子
DYES AND PIGMENTS
·
2021
·
IF 4.889
Pengyue Sun,Diya Yang,Jing Li,Yaodong Zhang
In this work, 4-formyl-3-hydroxybenzoic acid (FHBA), which does not contain a large conjugated ring structure, exhibited aggregation-induced emission (AIE) in aqueous solvents. On this basis, FHBA and a metal-organic framework material (i.e., ZIF-8) form into a complex (FHBA@ZIF-8), which presents the AIE characteristics of FHBA. Then, lanthanide metal (i.e., Eu 3+ ) coordinates with guanosine 5′-monophosphate disodium (GMP) salt to synthesize a coordination polymer (LnCP), which combines with FHBA@ZIF-8 do afford a novel double-emitting fluorescence probe (FHBA@ZIF-8@Eu-GMP, FZE) for tetracycline antibiotics (TCAs). TCAs coordinate with Eu 3+ and act as antenna ligand. Thus, an “antenna effect” comes into being and effectively enhances the emission intensity of Eu 3+ at 616 nm. Moreover, the UV–vis spectra of TCAs largely overlap with the excitation spectrum of FHBA, resulting in an inner filter effect (IFE) and quenching of blue-green fluorescence from FHBA molecules at 473 nm. The ratio of fluorescence signal (F 616 /F 473 ) showed a good linear relationship with the concentration of tetracycline hydrochloride (TC) in the range of 0.1–200.0 μM, and the detection limit was 60 nM (S/N = 3). This fluorescence probe can also effectively respond to oxytetracycline hydrochloride (OTC) and chlortetracycline hydrochloride (CTC). The probe was applied to determine TC in milk, and the recoveries ranged from 94.0% to 101.4%, indicating the application potential of this method. This study provides a novel idea for the construction of ratiometric fluorescence sensing platforms and shows the application potential of the AIE effect of FHBA.
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高影响因子
RSC Advances
·
2020
·Vol. 10
·期 19
·11210-11218
·
IF 3.119
Yan Zhang,Fengsong Qi,Yujian Liu
The high B-doped ordered mesoporous carbon (HPB-OMC) was prepared by using 4-hydroxyphenylboronic acid-modified phenolic resin (HPBPF) as a boron and carbon precursor via the evaporation-induced self-assembly (EISA) approach. The chemical composite, mesoporous structure, and electrochemical properties of the as-prepared HPB-OMC are investigated. The results show that both highly boron-doped and well-ordered mesoporous structure are achieved for HPB-OMCs, owing to the improvement of solubility of the resins in ethanol, and the enhancement of thermal stability of pore channels during carbonization. Moreover, the HPB-OMCs exhibit an ideal electric double-layer capacitor performance. With the increase of the B-doped content, the specific capacitance of the HPB-OMC electrode rises gradually, then drops off a little. The HPB-OMC with a high B content (3.96 wt%) shows a much high specific capacitance of 183 F g−1 at a current density of 1 A g−1, suggesting its promising application in the field of supercapacitors.
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高影响因子
INORGANIC CHEMISTRY
·
2023
·
IF 4.6
Yanfei Zou,Chen Hu,Shoukun Lv,Yimeng Shao,Bing Teng,Fei You,Hui Xu,Degao Zhong
As a key material for phosphor-converted light-emitting diodes (pc-LEDs) applications, broadband near-infrared (NIR) phosphors currently face poor thermal stability issues. In this work, we synthesized a broadband near-infrared phosphor YGa3(BO3)4: Cr3+ (YGBO: Cr3+) with a high thermal stability. The YGBO: Cr3+ sample exhibits a broadband near-infrared emission centered at 770 nm with a full width at half-maximum (fwhm) of 2130 cm–1 under blue light excitation. Benefiting from the borate host crystal’s strong structural rigidity, wide optical band gap, and weak electron–phonon coupling strength, YGBO: Cr3+ demonstrates strong luminescence thermal stability, and the corresponding luminescence intensity can maintain 80% at 150 °C compared to room temperature. Furthermore, we fabricated a pc-LED device using a blue light chip and YGBO: Cr3+ phosphor, and confirmed its application potential as a near-infrared light source in the spectral analysis of fruit freshness.
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高影响因子
Optical Materials Express
·
2021
·Vol. 11
·期 9
·3015-3022
·
IF 3.442
Xiangfa Kong,Chaohui Cheng,Qifan Wang,Mianwu Meng,Mianwu Meng,Chaoshu Chen,Xiujian Wang,Siyu Huang,Siyu Huang,Siyu Huang,Weixin Gan,Weixin Gan
A Au-Ga alloy layer is synthesized on a Au sheet substrate at low temperature and a new nanoporous Au material is then prepared based on Ga removal from the Au-Ga alloy by a electrochemical method. X-ray diffraction analysis confirms that the grains of the newly formed Au layer are refined and scanning electron microscopy suggests that the newly formed Au layer has a nanoporous structure with a pore size of∼16 nm. The cyclic voltammetry curve of the prepared nanoporous Au in a 1 M KCl solution presents a square structure of a supercapacitor with a specific capacitance of mF·cm-2, which is 86 times that of the smooth Au electrode. The 4-mercaptobenzoic acid (4-MBA) modified nanoporous Au material is used as a Raman substrate to detect Hg2+ with surface-enhanced Raman scattering. from 1.0×10−10 mol·L-1 to 1.0×10−5 mol·L-1), and the limit of detection is 1.0×10−10 mol·L-1.
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2020
·
IF 3.99
Junlin Zhu,Xuan Zhang,Zhihui Qin,Lexin Zhang,Yuqu Ye,Meiwen Cao,Lili Gao,Tifeng Jiao
The development of functional hydrogel materials for applications in catalysis has attracted great research interest, especially in aqueous phase catalysis. However, preparation of new structural hydrogel catalysts with enhanced catalytic activity still remains a challenge. In this study, a series of Pd nanoparticles (PdNPs) doped chitosan (CS)-based composite hydrogels were successfully prepared by adding graphene oxide (GO), carbon nanotubes (CNTs) and layered double hydrotalcites (LDHs) to CS hydrogel with glutaraldehyde as a cross-linking agent and in situ growing PdNPs. The structure and morphology analysis indicated that chitosan-based composite hydrogels could be used as carriers to load PdNPs and effectively prevent the agglomeration of PdNPs. Subsequently, 4-nitrophenol (4-NP) catalytic reaction was used as a typical model to evaluate catalytic performances of chitosan (CS)-based composite hydrogel catalysts. The obtained chitosan-based composite hydrogel catalysts exhibited better catalytic activity than that of PdNPs doped CS hydrogel catalyst (CS-PdNPs) and reusability for the reduction of 4-nitrophenol in water. The catalytic process conformed to the pseudo-first-order kinetic equation. Moreover, chitosan-based composite hydrogel catalysts containing CNTs had the best catalytic performance since the particle size of PdNPs was the smallest among three kinds of chitosan-based composite hydrogel catalysts. This work provides new ideas for the preparation of stable and efficient precious metal nanoparticle catalysts for applications in aqueous phase catalysis.
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高影响因子
ACS Sustainable Chemistry & Engineering
·
2020
·
IF 7.632
Kaisheng Yao,Tianjin Li,Chenchen Zhao,Weiwei Lu,Shuang Zhao,Jianji Wang
Conceiving a simple, green, and mild one-pot route to grow and construct anisotropic bimetallic 3D architectures with multilevel structures and promising functions is highly desirable and technically important in many applications. Herein, a facile ionic liquid-modulated strategy is presented for the preparation of hyperbranched Au3Pd1 bimetallic nanodendrites (NDs) in aqueous solution at room temperature. To implement this protocol, HAuCl4 and Na2PdCl4 are used as precursors and ascorbic acid as a reductant, and a common ionic liquid 1-butyl-3-methylimidazolium chloride ([C4mim]Cl) is utilized to direct the anisotropic growth of 3D Au3Pd1 NDs, which exhibits an eco-friendly feature. It is shown that the alloy Au3Pd1 NDs possess multilevel architectures, that is, primary 3D large flowers (with diameters of about 2.5–4.0 μm), secondary 2D leaves, tertiary symmetric branches, and quaternary symmetric petals. A series of factors influencing morphologies and properties of the products are investigated, and the results indicate that both [C4mim]Cl and Au/Pd atomic ratios are crucial to the formation of 3D Au3Pd1 NDs. Owing to the well-defined morphology and probable electronic effects between Au and Pd, the 3D Au3Pd1 NDs display high catalytic selectivity and good durability toward stepwise hydrogenation of 4-nitrophenylacetylene with a 100% conversion and 99.5% selectivity to 4-nitrostyrene in the first step and then 100% conversion from 4-nitrostyrene and 96.7% selectivity to 4-nitroethylbenzene in the second step. It is believed that the well-defined 3D Au3Pd1 NDs would also exhibit promising applications in other catalysis and eletrocatalysis applications.
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高影响因子
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
·
2020
·Vol. 96
·期 3
·697-703
·
IF 2.75
Aslam Khan,Dandi Wei,Zhuan Wang,Xintai Su,Jide Wang,Sultan Alam,Lu Wang,Ronglan Wu,Anatoly S Maloletnev,Chao Yang
BACKGROUND 4-Nitrophenol, as a representative hazardous contaminant, may pose potential risks to the environment in the process of production, storage, and use. Catalytic hydrogenation reduction offers a promising route to the removal of 4-nitrophenol by its transformation into the less toxic and biodegradable 4-aminophenol. In this work, nickel−cobalt bimetal oxide nanostructures were fabricated by the thermal decomposition of metal organic frameworks and cooperatively utilized for the catalytic reduction of 4-nitrophenol. RESULTS The as-fabricated oxide catalysts were characterized and analyzed with several physicochemical measurements, including X-ray diffraction, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, thermogravimetry, Fourier-transform infrared spectroscopy, Raman spectroscopy, nitrogen adsorption, and electrochemical impedance spectroscopy. The catalytic reduction of 4-nitrophenol was conducted in the presence of the as-prepared oxide nanostructures with varying Ni/Co ratios to evaluate their catalytic activity. The optimal catalyst (Ni–Co–O) delivered the activity parameter of k’ app = 12.0 min −1 mg −1 , which was higher than either NiO (2.4 min −1 mg −1 ) or Co 3 O 4 (3.6 min −1 mg −1 ). Moreover, the induction time of the 4-nitrophenol reduction was significantly reduced by using the bimetal oxide catalyst. Based on the surface and electrochemistry analyses, the enhancement of catalytic activity for the Ni–Co bimetal oxide nanostructures was discussed. CONCLUSION The above results indicated that the cooperation of nickel with cobalt into bimetal oxide nanostructures exhibited an enhanced catalytic activity, which not only promoted the conversion rate of 4-nitrophenol, but also shortened the reduction induction period.
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高影响因子
ChemCatChem
·
2021
·Vol. 14
·期 6
·e202101539
·
IF 5.686
Siwei Zhao,Shaohua Jin,Huanmin Liu,Youxin Su,Wei Liu,Shengfu Li,Chongchong She,Haonan Li,Kun Chen
Graphical A series of all-inorganic lead-free halide perovskite inverse opals were prepared and furtherly used as the photocatalysts to promote the polymerization of EDOT under the irradiation of visible light. All the samples exhibited the nice replica of the artificial template and high crystallinity. The bandgap of the catalysts was adjusted by screening the ratios of bromide to iodide and antinomy to bismuth. Cs 3 Bi 0.5 Sb 1.5 Br 9 showed the highest performance of the photocatalytic polymerization for EDOT, indicating the dual halide perovskites are more flexible than single halide perovskite in terms of bandgap engineering. A series of all-inorganic lead-free halide perovskite inverse opals were prepared and furtherly used as the photocatalysts to promote the polymerization of 3, 4-ethylenedioxythiophene (EDOT) under the irradiation of visible light. All the samples exhibited the nice replica of the artificial template and high crystallinity. The bandgap of the catalysts was adjusted by screening the ratios of bromide to iodide and antinomy to bismuth, respectively. Among all the samples, Cs 3 Bi 0.5 Sb 1.5 Br 9 inverse opal showed the best catalytic performance and the excellent stability in terms of the morphology and the crystalline phase after four cycles of photocatalytic polymerization. Since EDOT is commercially available, the present observation suggested a convenient protocol of preparing the composited materials or optoelectronic devices based on the lead-free halide perovskites and the conductive poly(3, 4-ethylenedioxythiophene).
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高影响因子
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