通讯机构：
[Cao, Z ] C;[Xu, F; Sun, LX ] G;Changsha Univ Sci & Technol, Sch Chem & Chem Engn, Hunan Prov Key Lab Mat Protect Elect Power & Trans, Changsha 410114, Peoples R China.;Guilin Univ Elect Technol, Sch Mat Sci & Engn, Guangxi Key Lab Informat Mat, Guilin 541004, Peoples R China.;Guilin Univ Elect Technol, Guangxi Collaborat Innovat Ctr Struct & Properties, Sch Mat Sci & Engn, Guilin 541004, Peoples R China.
摘要：
Developing a highly sensitive enzyme-free glucose sensor is critical, given the significant health risks posed by diabetes. In this study, a ZnO@CuCo2O4 composite with a novel flower-like heterostructure assembled by nanorods is prepared utilizing straightforward hydrothermal and calcination processes. The core-shell ZnO@CuCo2O4 featuring ZnO as the core and CuCo2O4 as the shell can improve the agglomeration phenomenon of CuCo2O4, expose more active sites, and promote efficient electron transfer. A ZnO@CuCo2O4 based non-enzyme glucose sensor is constructed and tested for the first time, which exhibits good sensing performance, a low limit of detection of 0.82 mu M, with broad linear ranges of 10-1725 mu M and 1725-9225 mu M, yielding sensitivities of 898 and 524 mu A mM-1 cm-2, respectively, and a rapid response time of only 2 seconds. Furthermore, it shows excellent selectivity, long-term stability (retaining 92.42% of its initial response current after 20 days), and good reproducibility, including in real saliva samples. The superior sensing performance of the ZnO@CuCo2O4 sensor can be attributed to the synergistic effects of the core-shell n-p heterostructure, the integration of amorphous and crystalline dual phases, and the flower-like structure, which collectively optimize electron transfer and electrocatalytic activity. This work offers a cost-effective and innovative strategy for advancing enzyme-free glucose sensing technologies.
作者：
Li Yaqi;Dai Yimin;Cai Ling;Yang Siwen;Wang Junlong;...
期刊：
Journal of Molecular Liquids,2025年424:126995 ISSN：0167-7322
作者机构：
[Li Yaqi; Dai Yimin; Cai Ling; Yang Siwen; Wang Junlong; Liu Bo; Ding Xianglong; Zhang Yue-Fei; Li Yan; Lu Cuihong; Wan Li] School of Chemistry and Chemical Engineering, Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Hunan Provincial Key Laboratory of Cytochemistry, Changsha University of Science and Technology, Changsha 410114 PR China
摘要：
Using aniline and environmentally friendly chitosan as raw materials, MnFe 2 O 4 with photocatalytic properties was introduced and in-situ polymerization was used to prepare Cht/PANI/MnFe 2 O 4 . The Cht/PANI/MnFe 2 O 4 was characterized by FTIR, SEM, XPS, XRD, BET and TGA. The experiment on the influence of pH on the adsorption capacity of the material shows that an acidic environment is conducive to the adsorption of fuel by the adsorbent. The zero charge point (pH PZC ) on the adsorbent surface is obtained at pH 6.45. The adsorption kinetic model conformed to the pseudo second order model, and the adsorption isotherm was in agreement with the Langmuir isotherm model. The q max values of Cht/PANI/MnFe 2 O 4 and Cht/PANI were 202.84 and 148.37 mg·g −1 . Experimental results have shown that Cht/PANI/MnFe 2 O 4 exhibits photocatalytic performance, which is superior to pure MnFe 2 O 4 .The maximum removal amount of Cht/PANI/MnFe 2 O 4 at equilibrium is 2569.66 mg·g −1 . The photocatalytic process of Cht/PANI/MnFe 2 O 4 also conforms to the pseudo-second-order kinetic model. The material has the advantages of simplicity and environmental friendliness and has potential application prospects in the purification of dye wastewater. The study proposed possible mechanisms for the adsorption and photocatalysis of CR.
Using aniline and environmentally friendly chitosan as raw materials, MnFe 2 O 4 with photocatalytic properties was introduced and in-situ polymerization was used to prepare Cht/PANI/MnFe 2 O 4 . The Cht/PANI/MnFe 2 O 4 was characterized by FTIR, SEM, XPS, XRD, BET and TGA. The experiment on the influence of pH on the adsorption capacity of the material shows that an acidic environment is conducive to the adsorption of fuel by the adsorbent. The zero charge point (pH PZC ) on the adsorbent surface is obtained at pH 6.45. The adsorption kinetic model conformed to the pseudo second order model, and the adsorption isotherm was in agreement with the Langmuir isotherm model. The q max values of Cht/PANI/MnFe 2 O 4 and Cht/PANI were 202.84 and 148.37 mg·g −1 . Experimental results have shown that Cht/PANI/MnFe 2 O 4 exhibits photocatalytic performance, which is superior to pure MnFe 2 O 4 .The maximum removal amount of Cht/PANI/MnFe 2 O 4 at equilibrium is 2569.66 mg·g −1 . The photocatalytic process of Cht/PANI/MnFe 2 O 4 also conforms to the pseudo-second-order kinetic model. The material has the advantages of simplicity and environmental friendliness and has potential application prospects in the purification of dye wastewater. The study proposed possible mechanisms for the adsorption and photocatalysis of CR.
摘要：
Aptamers have recently become novel probes for biosensors because of their good biocompatibility, strong specificity, and high sensitivity. Biosensors based on peptides or nucleic acid aptamers are used in implantable and wearable devices owing to their ease of synthesis and economic efficiency. Simultaneously, amphoteric ionic peptides are being explored as antifouling layers for biosensors resistant to interference from extraneous proteins in serum. Thus, this paper reviews recently developed aptamer-based biosensors and introduces peptide- and nucleic acid-based biosensors, while focusing on the three primary classes of biosensors: electrochemical sensors, fluorescent or colorimetric biosensors, and electroluminescent sensors. Furthermore, we summarize their general construction strategies, describe specific electrochemical sensors that use peptides as an antipollution layer, and elucidate their advantages.
通讯机构：
[Li, W ; Dai, YM] C;Changsha Univ Sci & Technol, Sch Chem & Chem Engn, Hunan Prov Key Lab Mat Protect Elect Power & Trans, Hunan Prov Key Lab Cytochem, Changsha 410114, Peoples R China.
摘要：
The frequent leakage of crude oil and the illegal discharge of industrial organic pollutants have caused serious damage to the ecological environment and the loss of valuable resources. In this paper, we introduce a sponge with magnetic and photothermal properties. Polydopamine and ferric oxide (Fe3O4) were grafted onto the sponge, self-assembled on the three-dimensional (3D) skeleton surface by Zif material, and grafted with cetyltrimethoxysilane to make the modified sponge highly hydrophobic (water contact angle = 155 degrees). Moreover, due to the dual photothermal conversion properties of polydopamine and ferric oxide (Fe3O4), the modified sponge can be quickly heated to 110 degrees C under light (1.25 kw/m2). The modified sponge demonstrated excellent crude oil adsorption capacity (44 g/g) and recyclability. Due to its magnetic properties (saturated magnetization = 4.43 emu/g), derived from the incorporation of Fe3O4, the sponge could be remotely controlled for adsorption. Moreover, it demonstrated the ability to continuously adsorb and collect light oil from the water surface with the aid of a peristaltic pump. The sponge also functioned as an efficient filter for separating heavy oil underwater through liquid gravity, achieving a separation efficiency of 97.2%. Therefore, this composite sponge not only presents a promising solution for crude oil spill remediation but also holds significant potential for industrial wastewater treatment, making it highly relevant for practical environmental applications.
期刊：
Colloids and Surfaces A: Physicochemical and Engineering Aspects,2025年713:136482 ISSN：0927-7757
通讯作者：
Ye Tan<&wdkj&>Julan Zeng
作者机构：
[Ting Yan; Ye Tan; Zhihong Zhou; Haixia Tong; Linping Yu; Julan Zeng] Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, PR China;[Zhiming Sun] School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, PR China
通讯机构：
[Ye Tan; Julan Zeng] H;Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, PR China
摘要：
Metal free carbon materials such as graphene, diamond, and carbon nanotubes are becoming alternative catalysts for peroxymonosulfate (PMS) activation to avoid drawbacks of traditional transition metal-containing catalysts, such as leaching of metal ions and harshing usage environments. However, these new catalysts have drawbacks such as complex processes and high synthesis costs. Herein, in this study, graphite with a unique "multilayer cake" structure was prepared as an efficient peroxymonosulfate (PMS) activator to degrade the antibiotic in the wastewater. Specifically, by optimizing the spacing between graphite layers, the expanded graphite (EG) exhibited exceptional performance, achieving over 80 % removal of tetracycline (TC) molecules within 15 mins. The enhancement of PMS activation ability is attributed to the enhanced electronic conductivity and adsorption capacity of EG. Notably, the electron-donating capability of EG facilitates a degradation mechanism dominated by singlet oxygen ( 1 O 2 ) rather than conventional free radicals (SO 4 •− , •OH), imparting the system with enhanced environmental adaptability. Furthermore, the facilitated electron transfer between pollutants and EG accelerates degradation. Compared with reported，The inherent hydrophobicity and excellent stability of graphite enable self-separation and reusability, ensuring cost-effectiveness and practicality. Collectively, this study highlights the promising application of the highly self-separating "multilayer cake" structured EG catalyst as a low-cost, high-efficiency PMS activator, offering valuable insights into the practical deployment of carbon-based materials in Fenton-like catalytic systems.
Metal free carbon materials such as graphene, diamond, and carbon nanotubes are becoming alternative catalysts for peroxymonosulfate (PMS) activation to avoid drawbacks of traditional transition metal-containing catalysts, such as leaching of metal ions and harshing usage environments. However, these new catalysts have drawbacks such as complex processes and high synthesis costs. Herein, in this study, graphite with a unique "multilayer cake" structure was prepared as an efficient peroxymonosulfate (PMS) activator to degrade the antibiotic in the wastewater. Specifically, by optimizing the spacing between graphite layers, the expanded graphite (EG) exhibited exceptional performance, achieving over 80 % removal of tetracycline (TC) molecules within 15 mins. The enhancement of PMS activation ability is attributed to the enhanced electronic conductivity and adsorption capacity of EG. Notably, the electron-donating capability of EG facilitates a degradation mechanism dominated by singlet oxygen ( 1 O 2 ) rather than conventional free radicals (SO 4 •− , •OH), imparting the system with enhanced environmental adaptability. Furthermore, the facilitated electron transfer between pollutants and EG accelerates degradation. Compared with reported，The inherent hydrophobicity and excellent stability of graphite enable self-separation and reusability, ensuring cost-effectiveness and practicality. Collectively, this study highlights the promising application of the highly self-separating "multilayer cake" structured EG catalyst as a low-cost, high-efficiency PMS activator, offering valuable insights into the practical deployment of carbon-based materials in Fenton-like catalytic systems.
摘要：
Pollution caused by the excessive use of phosphate has attracted widespread attention. In this study, Zr-La MOF-derived carbon (ZLMCs) electrode was prepared to remove phosphorus from water via the electroassisted adsorption (EAA) method. The crystal structure of ZLMOF induces defects that provide active sites for phosphate uptake. In comparison to alternative adsorption materials, ZLMC-16 achieves 143.0 mg g –1 (80 % full capacity) in one hour and 178.8 mg g –1 in three hours. In addition, the spontaneous adsorption of phosphorus was observed to be heat-absorbing, in line with the proposed pseudo-second-order kinetics and Langmuir isotherm model. FTIR and XPS analyses indicated that chemical bonding and electrostatic gravitational forces between La/Zr-O-P play a key role in the phosphate trapping mechanism. Under electric field, PO 4 3- was rapidly transferred from the aqueous solution to the electrode surface and can reach deeper adsorption sites. Furthermore, ZLMC-16 demonstrated high selectivity for PO 4 3- in the presence of common interfering ions (SO 4 2- , Cl - , and NO 3 – ) and an efficient adsorption capacity between pH 3–7. In conclusion, our work shows that ZLMC electrodes with fiber additions have good potential for efficient phosphate removal and recovery, which will promote the application of electroassisted adsorption in wastewater treatment.
Pollution caused by the excessive use of phosphate has attracted widespread attention. In this study, Zr-La MOF-derived carbon (ZLMCs) electrode was prepared to remove phosphorus from water via the electroassisted adsorption (EAA) method. The crystal structure of ZLMOF induces defects that provide active sites for phosphate uptake. In comparison to alternative adsorption materials, ZLMC-16 achieves 143.0 mg g –1 (80 % full capacity) in one hour and 178.8 mg g –1 in three hours. In addition, the spontaneous adsorption of phosphorus was observed to be heat-absorbing, in line with the proposed pseudo-second-order kinetics and Langmuir isotherm model. FTIR and XPS analyses indicated that chemical bonding and electrostatic gravitational forces between La/Zr-O-P play a key role in the phosphate trapping mechanism. Under electric field, PO 4 3- was rapidly transferred from the aqueous solution to the electrode surface and can reach deeper adsorption sites. Furthermore, ZLMC-16 demonstrated high selectivity for PO 4 3- in the presence of common interfering ions (SO 4 2- , Cl - , and NO 3 – ) and an efficient adsorption capacity between pH 3–7. In conclusion, our work shows that ZLMC electrodes with fiber additions have good potential for efficient phosphate removal and recovery, which will promote the application of electroassisted adsorption in wastewater treatment.
摘要：
In this study, a chalcone-based fluorescent probe (2-HPC) was synthetized and used to detect N 2 H 4 . Upon addition of N 2 H 4 , the fluorescence of 2-HPC significantly decreases at 478 and increases at 445 nm. The sensing mechanism was investigated using nuclear magnetic resonance (NMR) and mass spectrometry (MS). This fluorescence enhancement-based method offers a low detection limit of 12.3 nM. Additionally, a simple 2-HPC-loaded silica gel sheet device was also developed and employed for monitoring N 2 H 4 in water samples. Importantly, the proposed probe 2-HPC exhibited low cytotoxicity to cells, enabling it to tracking N 2 H 4 in living cells.
期刊：
E3S Web of Conferences,2024年522 ISSN：2555-0403
作者机构：
Electric Power Research Institute of EHV Transmission Company, China Southern Power Grid Co., Ltd., Guangzhou 510405, P. R. China;Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, P. R. China
摘要：
Oil-filled submarine cables have come to dominate the reliable delivery of electrical power today, but oil leakage still remain a challenge. This work focuses on the exploring of spill behavior of dodecylbenzene (DDB) after leakage and the detection of DDB. Static and dynamic spill model were established to study the spreading and migration behavior of underwater DDB. In still water, the spilled oil droplets can quickly reach the uniform floating speed of 0.13 m s<sup>-1<sup/> with no significant change under different oil spill rates. DDB can be dispersed as small droplets in seawater, which the diameter of DDB droplets increased from 60 nm to 200 nm with the increase of the concentration from 10 ppm to 1000 ppm. This study suggests a research basis for finding the leakage point of submarine cables, and explores the way for detection of DDB.
摘要：
In order to develop a highly efficient H(2)S gas sensor at low working temperature, in this work, a kind of novel Ce-doped ZnCo(2)O(4) hollow microspheres (Ce/ZnCo(2)O(4) HMSs) were successfully synthesized using a template-free one-pot method, showing a sensitive response toward H(2)S. The microstructure and morphology of the material were characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The gas-sensing performance of the composite was investigated, showing that the ZnCo(2)O(4) doped with 6 mol% Ce had the highest response to 20 ppm H(2)S at a low operating temperature of 160 °C with a response value of 67.42, which was about 2 times higher than that of original ZnCo(2)O(4). The prepared Ce/ZnCo(2)O(4) HMS sensor in response to H(2)S exhibited a linear range of 0.1-200 ppm with a low detection limit of 0.1 ppm under the conditions of ambient humidity of 45% and ambient temperature of 20 °C. Meanwhile, it also possessed good selectivity, repeatability and reproducibility. The response value of the sensor decreased by 5.32% after 7 months of continuous monitoring of H(2)S in an atmospheric environment of a pig farm, indicating that the sensor had a long-term stability and continuous service life with important application prospects.
摘要：
A series of novel porous hydrogen-generation materials with the formulae Al-(BiO)2CO3, Al-4BiNO3(OH)2 center dot BiO(OH), and Al-Bi2(SO4)3 were synthesized by ball milling and spark plasma sintering (SPS). Their hydrogen-production properties were investigated. The results revealed that doping Al-(BiO)2CO3 in aluminium powder was the most effective for improving the hydrogen-generation performance. The hydrogen-conversion yield and maximum hydrogen-generation rate (MHGR) of the Al-(BiO)2CO3 block reached 94.9% and 384.6 mL g-1 min-1, respectively. Mechanism study indicated that (BiO)2CO3 decomposed into Bi2O3 and CO2, and the produced Bi2O3 could react with Al to produce Bi and Al2O3in situ during the SPS process. Herein, the produced CO2 could also form a large number of holes in the bulk sample under the action of sintering pressure to obtain the porous Al-(BiO)2CO3 composite. The hydrogen-generation performance of Al-(BiO)2CO3 was thus substantially enhanced under the synergistic effect of these factors. A series of novel porous hydrogen-generation materials with the formulae Al-(BiO)2CO3, Al-4BiNO3(OH)2 center dot BiO(OH), and Al-Bi2(SO4)3 were synthesized by ball milling and spark plasma sintering (SPS).
摘要：
The effect of critical plasma spraying parameters (CPSPs) on phase composition, microstructure and mechanical property of (La 0.2 Nd 0.2 Sm 0.2 Eu 0.2 Gd 0.2 ) 2 Zr 2 O 7 thick coatings was investigated. After coating deposition, the phase structure of (La 0.2 Nd 0.2 Sm 0.2 Eu 0.2 Gd 0.2 ) 2 Zr 2 O 7 was transformed from pyrochlore to fluorite in the coating. When the CPSP value increased from 0.83kW/Lpm to 1.17kW/Lpm, the porosity of as -deposited coating was decreased from (16.46 +/- 0.65)% to (6.94 +/- 0.44)%. As a result, the elastic modulus of the coating was improved from (59.34 +/- 2.39) GPa to (79.19 +/- 4.78) GPa, and the corresponding micro -hardness was also increased from (2.59 +/- 0.30) GPa to (3.39 +/- 0.37) GPa. Consequently, the fracture toughness of as -deposited coating was decreased with the increasing CPSP value, while the corresponding residual stress was obtained to be compressive stress and it increased from -(43.00 +/- 1.96) MPa to -(70.42 +/- 3.89) MPa, indicating that the lower CPSP value was beneficial to reducing the residual compressive stress, which might be in favor of enhancing thermal shock resistance of coating.
摘要：
Low mass transfer and photon efficiency are the main problems compromising the practical application of photocatalysts. A novel hemimorphite/zinc oxide (ZnO)/silica (SiO2) aerogel composite material for degradation of tetracycline (TC) was prepared by a mild direct precipitation-calcination method. By optimizing the preparation conditions, the loading of ZnO was determined to be 40% and the calcination temperature was 450 degrees C. Not only was the mass transfer efficiency of the system improved by the significant number of stacking holes, but also, the light absorption performance of hemimorphite/ZnO/SiO2 was enhanced by the generation of a specific crystal phase, the hemimorphite phase. The results indicate that the equilibrium adsorption capacity and photocatalytic kinetic rate of the hemimorphite/ZnO/SiO2 composite are 4.30 and 3.28 times higher than that of pure ZnO, respectively. The introduction of SiO2 reduced the grain size of ZnO from 14.5 to 4.5 nm, inhibiting the agglomeration of ZnO. O2-\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$O_{2}<^>{ - }$$\end{document} and h+\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$h<^>{ + }$$\end{document} were proved to be the primary and secondary active species for the degradation by EPR and radical scavenger tests.a The possible mechanism and intermediates of TC degradation process were speculated, including hydroxylation, ring opening and branch chain removal reactions. In a nutshell, this study provides a novel strategy for designing and preparing efficient photocatalytic materials.
