MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Mingwei Yang,Jiajin Feng,Chunru Li,Yulin Wang,Xinyu Zheng
In this study, a porous carbon material — carbon molecular sieve (CMS) is proposed by pyrolysis of inorganic molecular sieve infiltrated with organic molecules. During the pyrolysis, the architecture of molecular sieve offers nucleation framework for carbon atoms under the inert atmosphere. Thus, the CMS replicates the structure merit of molecular sieve, being characterized with ordered channels and cavities. The obtained CMS went through a series of materials characterization, showing the CMS was containing lots of ordered cavity structure with majority of mesopores. Meanwhile the CMS was highly graphitized, which could speed up electron and mass transfer on its surface. To demonstrate the excellent electrochemical properties of CMS, it was drop-coating onto the surface of GCE to fabricate a CMS/GCE electrode. The composite electrode was employed for the detection of p-nitrophenol, a highly toxic environmental pollutant, demonstrating its excellent performance in the electrocatalytic oxidation response. A series of electrochemical tests were carried out to optimize the detection of p-nitrophenol. Under the optimized conditions, the quantification of p-nitrophenol is achieved from 2.0 to 1000 μM with a detection limit of 0.2 μM (S/N = 3).
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高影响因子
Food & Function
·
2020
·Vol. 11
·期 5
·4193-4201
·
IF 4.171
Xianghe Meng,Chaosheng Xia,Qin Ye,Xiaohua Nie
tert-Butyl-p-benzoquinone (TBBQ), a metabolite of tert-butylhydroquinone from food, has cytotoxicity, the underlying mechanism of which is not clear. In this study, the viability of RAW 264.7 cells exposed to TBBQ at concentrations of 0.5–10 μg mL−1 was assayed by MTT. Results suggest that TBBQ decreased the viability in a dose-dependent manner. Monodansylcadaverine (MDC) staining results indicate the occurrence of autophagy induced by TBBQ, which was manifested by activation of LC3-II concurrent with the increased levels of Beclin1 and reduced levels of p62. Elevated lipid peroxide and decreased SOD activity by TBBQ exposure suggest the overproduction of ROS, which may account for the increase in the genotoxic stress protein p53. Both upregulation of p53 and reduction of Akt levels inhibited mTOR, which activated autophagy. Addition of 3-MA counteracted the impact of TBBQ on ATG proteins and cell viability. All of these results suggest that TBBQ induces autophagy of RAW 264.7 cells principally by inhibition of the Akt/mTOR signaling pathway, and they implicate ROS in this regulation.
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Chuxuan Zhao,Zixin Liu,Yi Wu,Juntao Guo,Peng Huang,Yifei Wang,Yeheng Leng,Ivan P. Pozdnyakov,Jing Xu,Feng Wu
The widespread used organic arsenic pesticides and veterinary drugs have drawn attention for decades. Its photochemical transformation in the surface water contributes to its degradation and the formation of products. The effect of co-existent components like anthropogenic reagents (e.g. ethylenediaminetetraacetatic acid, EDTA) on the photochemical transformation has still to be investigated in depth. Fe(III)-EDTA complex is a common and abundant complex in surface water. In this work, UVA light and simulated sunlight have been used as light sources to explore the effect of Fe(III)-EDTA on the photodegradation of p -arsanilic acid (ASA), used as an organic arsenic feed additive. Whereas ASA hardly absorbs UVA light and can only be directly photolyzed by simulated sunlight, the Fe(III)-EDTA complex is photoactive under either light source. At pH 6, the presence of Fe(III)-EDTA complex enhances the photodegradation efficiency of ASA from 0% to ca. 23% after 180 min reaction under UVA light irradiation, and from 30% to ca. 58% after 45 min reaction under simulated sunlight irradiation. Appropriate amount of EDTA enhances the photodegradation efficiency, whereas excessive EDTA suppresses the initial reaction rate. Mechanistic study has revealed contributions from direct photolysis and photochemical reactions of Fe(III)-EDTA and Fe(III)–OH complexes. Generated •OH has been confirmed as the important contribution. Photodegradation products include inorganic arsenic, organic arsenic, and other organic by-products, and the proportions of these products vary in different light-induced systems due to the diverse reaction pathways. The results of this work improve our understanding of the risks of residual ASA in the environment, allow prediction of its migration and transformation, and show how organic arsenic livestock and poultry feed additives might be removed.
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高影响因子
CARBOHYDRATE POLYMERS
·
2025
·
IF 12.5
Qing Gao,Zerui Ou,Xiangze Jia,Shahid Ahmed Junejo,Bin Zhang,Qiang Huang
Despite the good biological and antibacterial activities, the p-anisaldehyde is easy to evaporate or degrade during processing and storage. Herein, a new V -type starch-cyclodextrin composite carrier was constructed to efficiently encapsulate p-anisaldehyde in addressing the inherent disadvantages. The introduction of β-cyclodextrin (β-CD) enhanced the short- and long-range ordered structures of the composite carrier. The V -type starch-cyclodextrin composite ( V C30) exhibited the highest loading capacity of 142.01 mg/g for p-anisaldehyde, which was significantly higher than that of V -type starch (VS, 97.83 mg/g) and commercial β-CD (128.48 mg/g). The loading capacity of the V-type starch-cyclodextrin composite was positively correlated with its crystallinity and short-range order. The release rate of p-anisaldehyde was in the order of VC30 < β-CD < VS. Under non-cold chain daily storage (25 °C and 57 % relative humidity) for 2 weeks, the p-anisaldehyde of thymol released from complexes was 36 % (VC30), 49 % (β-CD), and 65 % (VS), respectively. Due to the high loading capacity and good sustained release properties, the noncontact preservation of high-value fruit by V C30 controlling p-anisaldehyde release successfully extended the shelf life of cherries from six to twelve days.
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PubMed
高影响因子
Materials Today Chemistry
·
2025
·
IF 6.7
Wenquan Liu,Yu Sun,B. Narsu,Liang Qiao,Jipeng Huang,Chang Q. Sun,Guiye Shan,Biao Wang
The escalating demand for energy harvesting technologies to power small wireless devices has intensified interest in triboelectric nanogenerators (TENGs), yet challenges in energy conversion efficiency and durability persist. In this study, we present a novel core-shell BaTiO 3 @P(VDF-TrFE) nanofiber (BT@PVFT NF) structure, developed to enhance the triboelectric performance of TENGs for wearable and portable electronic applications. The BT@PVFT NF were fabricated using coaxial electrospinning , combining the high dielectric constant of BT with the ferroelectric properties of PVFT to maximize surface charge density and energy conversion efficiency. The morphological, structural, and phase characteristics of the BT@PVFT NFs were thoroughly investigated, with significant findings on the enhancement of the β-phase of PVFT through the synergistic effects of the core-shell configuration and electrospinning process . The optimized TENG demonstrated remarkable electrical output, achieving peak output voltage of 450 V and power density of 80 μW cm −2 , alongside exceptional durability over 15,500 cycles. Furthermore, the device successfully powered commercial electronics and exhibited robust mechanical energy harvesting from human motion. This work not only advances the understanding of core-shell structures in energy harvesting but also highlights the potential of the BT@PVFT NFs for self-powered sensing applications, opening new pathways for the development of energy-efficient wearable technologies .
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高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2019
·Vol. 166
·期 2
·B35
·
IF 3.12
Juanjuan Gao,Weiqing Zhu,Haiou Song,Shupeng Zhang
p-Phenylenediamine (PPD) and hydroquinone (HQ) are hair dye precursors for permanent dyeing and are used globally. We report a novel and economic approach for the selective and simultaneous detection of the cathodic peaks of PPD and HQ by using a bare glassy carbon electrode, compared with modified electrodes that are obtained by tedious or expensive functionalized and that failed to achieve a peak-to-peak separation of PPD and HQ. Linear relationships between the simultaneous cathodic peak current of PPD and HQ concentrations were obtained for 0.5–400 μM and 5–4,000 μM with detection limits (S/N = 3) of 0.163 and 0.353 μM, respectively. The glassy carbon electrode sensor was applied to determine PPD and HQ in Nanjing river water with a recovery for these two analogues of 98.7–103.9% and 98.0–102.4%, respectively.
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高影响因子
Advanced Science
·
2020
·Vol. 7
·期 16
·2001013
·
IF 15.84
Kai Shen,Yu Zhang,Xiaoqing Wang,Chizhu Ou,Fei Guo,Hongbing Zhu,Cong Liu,Yanyan Gao,Ruud E. I. Schropp,Zhiqiang Li,Xianhu Liu,Yaohua Mai
Environmentally benign and potentially cost-effective Sb 2 Se 3 solar cells have drawn much attention by continuously achieving new efficiency records. This article reports a compatible strategy to enhance the efficiency of planar n–i–p Sb 2 Se 3 solar cells through Sb 2 Se 3 surface modification and an architecture with oriented 1D van der Waals material, trigonal selenium (t-Se). A seed layer assisted successive close spaced sublimation (CSS) is developed to fabricate highly crystalline Sb 2 Se 3 absorbers. It is found that the Sb 2 Se 3 absorber exhibits a Se-deficient surface and negative surface band bending. Reactive Se is innovatively introduced to compensate the surface Se deficiency and form an (101) oriented 1D t-Se interlayer. The p-type t-Se layer promotes a favored band alignment and band bending at the Sb 2 Se 3 /t-Se interface, and functionally works as a surface passivation and hole transport material, which significantly suppresses interface recombination and enhances carrier extraction efficiency. An efficiency of 7.45% is obtained in a planar Sb 2 Se 3 solar cell in superstrate n–i–p configuration, which is the highest efficiency for planar Sb 2 Se 3 solar cells prepared by CSS. The all-inorganic Sb 2 Se 3 solar cell with t-Se shows superb stability, retaining ≈98% of the initial efficiency after 40 days storage in open air without encapsulation.
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高影响因子
INTEGRATED FERROELECTRICS
·
2020
·
IF 0.557
Jianming Liu,Yao Feng,Juanjuan Yin,Tifeng Jiao
In this work, a new composite nanomaterial prepared by hydrothermal synthesis, it not only offers a convenient and stable method, but beneficial for the stable of nanomaterials. The obtained composite was explored use CNT-COOH and CuCl2, after deal with ultrasound and magnetic stirring then transferred to Teflon-lined stainless-steel autoclave for reaction. CNT-COOH not only increases the mechanical strength of the composite, but also provides a growth site of Cu nanocrystalline. The final production has a shorter reaction time for reducing 4-nitrophenol with NaBH4 than other products and has a high utilization rate. Studies have shown that the preparation of excellent nanocomposite has the potential for catalytic degradation.
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高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-13
·
IF 14.7
Xu Chenyang,Wang Hongxin,Guo Hongying,Liang Ke,Zhang Yuanming,Li Weicong,Chen Junze,Lee Jae Sung,Zhang Hemin
Developing transparent and efficient photoanodes is a challenging but essential task in tandem photoelectrochemical cell for unassisted solar water splitting without an external bias. Here we report construction of p–n homojunction hematite photoanodes by hybrid microwave annealing-induced single antimony doping, which results in the gradually-increased valence states from the surface to the inside by the unique features of hybrid microwave annealing. The Sb-doped p–n homojunction hematite photoanode exhibits improved performance and displays a good transparency, achieving a stable photocurrent density of ~4.21 mA cm −2 at 1.23 V RHE under 100 mW cm −2 solar irradiation, which is comparable to the reported state-of-the-art hematite photoanodes. More importantly, a parallel-connected stack of six photoanodes of transparent p–n homojunction records a near-theoretical photocurrent density of ~10 mA cm –2 at 1.23 V RHE under standard photoelectrochemical water splitting conditions, which serves as a useful reference for hematite photoanodes and promises its practical application for unbiased photoelectrochemical water splitting.
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高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2021
·
IF 8.067
Zeming Gu,Qi Wang,Xiaoqin Sun,Lingwei Lu,Yuwei Zhang,Ran Wang,Shu Jin,Yinlin Shao,Jun Qian,Xiaoxiang Xu
P-type semiconductivity has been observed in solid solution series (SrTiO 3 ) 1- x (CaCr 0.5 Nb 0.5 O 3 ) x (0.0 ≤ x ≤ 0.15), which all adopt cubic symmetry and own intense absorption in the visible light region. These solid solutions are superior H 2 evolution photocatalysts under visible light illumination (λ ≥ 400 nm). An AQE as high as 1.02 % at 420 ± 20 nm has been achieved at optimal composition (SrTiO 3 ) 0.85 (CaCr 0.5 Nb 0.5 O 3 ) 0.15 which significantly surpasses the parent compounds. Stoichiometric H 2 /O 2 production under visible light illumination has been successfully realized using Z-scheme system containing (SrTiO 3 ) 0.85 (CaCr 0.5 Nb 0.5 O 3 ) 0.15 , WO 3 and I − /IO 3 − redox couple.
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高影响因子
JOURNAL OF FLUORINE CHEMISTRY
·
2021
·
IF 2.05
Tao Zhang,Huihui Liu,Jingyu Shuai,Ziru Gao,Qingfeng Dong,Guannan Wang,Yabo Xiong,Qing Zhu,Houbin Li
The energetic polymeric binders play a key role in the solid propellants, and it create an important need for the development of the energetic binder performance. In this work, we developed a strategy for obtaining a novel fluorine-containing copolymer P(FPO/NIMMO) by the cationic ring-opening polymerization of 2-(2,2,3,3-tetrafluoro-propoxymethyl)-oxirane (FPO) and 3-nitratomethyl-3-methyloxetane (NIMMO). The chemical structure of P(FPO/NIMMO) was systemically characterized by Fourier transform infrared (FT-IR), 1 H and 13 C nuclear magnetic resonance ( 1 H NMR and 13 C NMR), and gel permeation chromatography (GPC). Thermogravimetric analysis (TGA-DTG) was utilized to evaluate the thermal stability of (FPO/NIMMO) and the result showed that the sharp weight loss temperature was at 215.7 °C. In comparison with PNIMMO, the P(FPO/NIMMO) had a lower glass transition temperature (T g ) of -42.7 °C detecting by the differential scanning calorimetry (DSC), indicating that it developed the better stability performance. This new strategy is devised for the utility of P(FPO/NIMMO) copolymer , enabling their extension to be potential energetic binder for solid propellants.
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高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2023
·
IF 10.9
Yi-bo Zhang,Ji-Sheng Liang,Chengyan Liu,Qi Zhou,Zhe Xu,Hong-bo Chen,Fu-cong Li,Ying Peng,Lei Miao
P-type Mg 3 Sb 2 -based Zintls have attracted considerable interest in the thermoelectric (TE) field due to their environmental friendliness and low cost. However, compared to their n-type counterparts, they show relatively low TE performance, limiting their application in TE devices. In this work, we simultaneously introduce Bi alloying at Sb sites and Ag doping at Mg sites into the Mg 3 Sb 2 to cooperatively optimize the electrical and thermal properties for the first time, acquiring the highest ZT value of ∼0.85 at 723 K and a high average ZT of 0.39 in the temperature range of 323–723 K in sample Mg 2.94 Ag 0.06 Sb 1.9 Bi 0.1 . The first-principle calculations show that the co-doping of Ag and Bi can shift the Fermi level into the valence band and narrow the band gap, resulting in the increased carrier concentration from 3.50 × 10 17 cm −3 in the reference Mg 3 Sb 0.9 Bi 0.1 to ∼7.88 × 10 19 cm −3 in sample Mg 2.94 Ag 0.06 Sb 0.9 Bi 0.1 . As a result, a remarkable power factor of ∼778.9 µW m − 1 K − 2 at 723 K is achieved in sample Mg 2.94 Ag 0.06 Sb 0.9 Bi 0.1 . Meanwhile, a low lattice thermal conductivity of ∼0.48 W m − 1 K − 1 at 723 K is also obtained with the help of phonon scattering at the distorted lattice, point defects, and nano-precipitates in sample Mg 2.94 Ag 0.06 Sb 0.9 Bi 0.1 . The synergistic effect of using the multi-element co-doping/-alloying to optimize electrical properties in Mg 3 Sb 2 holds promise for further improving the TE performance of Zintl phase materials or even others.
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