CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Zhihua Zhao,Xianghao Meng,Ayesha Yousaf,Zhigang Shao,Lan Wu
MoO 3 nanorods, successfully modified with CeO 2 , were synthesized using the hydrothermal technique and subsequently utilized for gas detection. Various techniques were employed to test and analyze the MoO 3 /CeO 2 materials. Numerous characterizations have confirmed that the synthesized MoO 3 /CeO 2 possesses excellent properties. The synthesized MoO 3 nanorods demonstrated uniformity in size, with an approximate diameter of 146 nm. CeO 2 nanoparticles were distinctly visible on the surface of the MoO 3 nanorods. The MoO 3 /CeO 2 sensor demonstrated significantly enhanced sensing performance for triethylamine at 240 °C. Specifically, the MoO 3 /CeO 2 sensor exhibited a reactivity of 73.1 to 20 ppm of triethylamine, signifying an improvement of 3.5 times compared to the reactivity of the MoO 3 nanorods. The sensor based on MoO 3 /CeO 2 exhibited high selectivity, good repeatability, and a lower detection limit for TEA. The enhancement of the gas-sensing performance of the MoO 3 /CeO 2 sensor may have been attributed to the accelerated electron transfer facilitated by the heterojunction formed between MoO 3 and CeO 2 . Additionally, underlying sensing mechanism was investigated using Density Functional Theory (DFT) methodologies.
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产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2020
·
IF 6.306
Ting Zhou,Yunzi Feng,Thierry Thomas-Danguin,Mouming Zhao
Odor-taste interaction has become a popular salt reduction method. In this study, the odorants associated with saltiness in soy sauce were selected by gas chromatography/olfactometry-associated taste (GC/O-AT), and their ability to induce saltiness/umami enhancement was verified by sensory evaluation. A total of 30 taste-associated odorants were perceived, including 5 saltiness-associated and 2 umami-associated odorants. Among them, 3-(methylthio)propanal, 1-octen-3-ol, 3-(methylthio)-1-propanol, and 2,5-dimethylpyrazine could significantly enhance saltiness of 0.3% NaCl solution ( p < 0.05). Furthermore, 3-(methylthio)propanal, maltol, 2,5-dimethyl-4-hydroxy-3(2 H )-furanone (HDMF), dimethyl trisulfide, 3-(methylthio)-1-propanol and 1-octen-3-ol could also enhance the umami taste in 0.3% monosodium glutamate solution. Compared with zero or strong-salt-content (0.8%) solution, the saltiness of weak-salt-content (0.3%) was enhanced significantly by adding the odorant. These results suggest that salty food is an efficient source for selecting saltiness-enhancing odorants, which could be used to compensate NaCl reduction in food.
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DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Huai Wang,Zhenyu Yuan,Jingfeng Li,Renze Zhang,Fanli Meng
Xylene is not only a carcinogenic gas, but also one of indoor pollution gases. Therefore, it is indispensable to develop a xylene gas sensor with fast response and high sensitivity. In this paper, 5 wt%rGO-Fe 2 (MoO 4 ) 3 -1 wt%Pt gas sensitive material was prepared by integrating the excellent properties of reduced graphene oxide (rGO) and noble metal Pt. In addition, the microstructure, elemental composition, phase and crystal structure of 5 wt%rGO-Fe 2 (MoO 4 ) 3 -1 wt%Pt nanocomposites were characterized. The nanostructure of Pt-modified Fe 2 (MoO 4 ) 3 nano-hollow spheres compounded on rGO was successfully prepared. The gas sensitive experiment results showed that 5 wt%rGO-Fe 2 (MoO 4 ) 3 -1 wt%Pt had better gas sensitive performance than Fe 2 (MoO 4 ) 3 (FMO), FMO-1 wt%Pt and 5 wt%rGO-FMO. At the optimum working temperature (175℃), the 5 wt%rGO-FMO-1 wt%Pt sensor had a maximum response value to xylene, and could detect 500 ppb xylene. In addition, the 5 wt%rGO-FMO-1 wt%Pt nanocomposite showed a rapid response and recovery process to xylene. Moreover, the gas sensitivity mechanism and enhancement of gas sensitivity of 5 wt%rGO-FMO-1 wt%Pt to xylene were systematically analyzed. The 5 wt%rGO-FMO-1 wt%Pt gas sensor prepared provided a new reference for the detection of xylene.
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DOI
高影响因子
Small
·
2025
·
IF 12.1
Yanlin Zhang,Changming Zhang,Zheng Zhang,Huakang Zong,Pengwei Tan,Liyang Luo,Yuanyuan Luo,Guotao Duan
In the sensing field, the electronic structure of sensing materials has a great influence on the properties of the sensors. Here, by Ga doping pure rhombohedral In 2 O 3 (h-In 2 O 3 ), the double-phase In 2 O 3 (cubic/rhombohedral In 2 O 3 , c/h-In 2 O 3 ) porous nanospheres are obtained. And then Micro Electromechanical System (MEMS) gas sensors based on monolayer film are further fabricated by self-assembling the above nanospheres. The 5% Ga-doped In 2 O 3 sensors exhibit excellent HCHO sensing performance with a high-response (110.6@100 ppm), rapid response/recovery time (5.2/18.4 s) and low limit of detection (50 ppb) at an operating temperature of 180 °C. The 5% Ga-doped In 2 O 3 sensors also show high consistency (fluctuations of only 8.3%). Besides, a handheld device is developed to enable real-time monitoring and early warning of indoor HCHO at ppb-level. Based on experimental results and DFT theoretical calculation, the enhanced sensing mechanism is revealed, which is correlated with the optimization of electronic band structure by Ga doping and the appearance of double-phase heterostructures caused by Ga doping. Therefore, the relationship between electronic structure and gas sensing properties has also been established. This work significantly introduces a novel approach for the mass production of MEMS gas sensors, ensuring high sensitivity, repeatability and consistency.
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DOI
PubMed
高影响因子
Small
·
2024
·
IF 13
Jinyan Lin,Yueyang He,Yang Li,Jianwu Chen,Xiaolong Liu
The efficacy of traditional radiotherapy (RT) has been severely limited by its significant side effects, as well as tumor hypoxia. Here, the nanoscale cerium (Ce)-based metaloxo clusters (Ce(IV) 6 )-porphyrin (meso-tetra (4-carboxyphenyl) porphyrin, TCPP) framework loaded with L-arginine (LA) (denoted as LA@Ce(IV) 6 -TCPP) is developed to serve as a multifarious radio enhancer to heighten X-ray absorption and energy transfer accompanied by O 2 /NO generation for hypoxia-improved RT-radiodynamic therapy (RDT) and gas therapy. Within tumor cells, LA@Ce(IV) 6 -TCPP will first react with endogenous H 2 O 2 and inducible NO synthase (iNOS) to produce O 2 and NO to respectively increase the oxygen supply and reduce oxygen consumption, thus alleviating tumor hypoxia. Then upon X-ray irradiation, LA@Ce(IV) 6 -TCPP can significantly enhance hydroxyl radical (•OH) generation from Ce(IV) 6 metaloxo clusters for RT and synchronously facilitate singlet oxygen ( 1 O 2 ) generation from adjacently-coordinated TCPP for RDT. Moreover, both the •OH and 1 O 2 can further react with NO to generate more toxic peroxynitrite anions (ONOO − ) to inhibit tumor growth for gas therapy. Benefitting from the alleviation of tumor hypoxia and intensified RT-RDT synergized with gas therapy, LA@Ce(IV) 6 -TCPP elicited superior anticancer outcomes. This work provides an effective RT strategy by using low doses of X-rays to intensify tumor suppression yet reduce systemic toxicity.
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DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2022
·
IF 4.326
Shuaifeng Liu,Edouard Asselin,Zhibao Li
An industrially feasible process was proposed to produce α-calcium sulfate hemihydrate (α-HH) from FGD gypsum without any additives. In this process, an AlCl3 solution was used to promote the conversion of calcium sulfate dihydrate (DH) to hexagonal prismatic α-HH with high strength at atmospheric pressure. The phase transition kinetics of FGD gypsum was experimentally investigated under conditions: AlCl3 (2–2.5 m), MgCl2 (0–0.4 m) existing in raw FGD gypsum, and the solid–liquid ratio (or solid content %) range of 0.1–2 at 363 K. It was found that increasing the concentrations of MgCl2 in AlCl3 solution accelerated the conversion. The uniform large hexagonal prism HH product was obtained at the folowing optimal conditions: 2.5 mol/kg AlCl3, 0.4 mol/kg MgCl2, solid–liquid ratio of 2, and equilibration time of 2 h at 363 K. The phase diagram of the AlCl3-MgCl2-H2O system was determined by measuring solubility of solids. The E-NRTL activity model was used to construct the phase transition diagram of CaSO4 in AlCl3–MgCl2 media and to judge the stable range of DH and HH.
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DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2021
·
IF 7.46
Wenjing Pan,Yong Zhang,Sujing Yu,Xiaohua Liu,Dongzhi Zhang
The metal-organic framework (MOF)-derived alpha-iron oxide hollow nanosphere/molybdenum diselenide nanoflower (α-Fe 2 O 3 /MoSe 2 ) composite is fabricated via simple hydrothermal route. Multiple characterization methods have proved the successful synthesis of α-Fe 2 O 3 /MoSe 2 composites. The nanocomposite with a mass ratio of α-Fe 2 O 3 and MoSe 2 of 4:1 shows high response to H 2 S gas sensing. Moreover, the gas sensitivity test of the system shows that the α-Fe 2 O 3 /MoSe 2 composite sensor exhibits a faster response/recovery rate, outstanding repeatability and anti-humidity interference toward H 2 S sensing at room temperature, which also shows excellent selectivity for H 2 S compared to various potentially interfering gases. Further studies have shown that α-Fe 2 O 3 /MoSe 2 nanocomposites have improved H 2 S gas sensing performance due to the increased active sites and specific surface area, and the formation of n-n heterojunctions at the interface between α-Fe 2 O 3 hollow nanospheres and MoSe 2 nanoflowers.
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DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 82
·78257-78263
·
IF 3.289
Jiabao Cui,Jingjing Jiang,Linqi Shi,Fei Zhao,Dejun Wang,Yanhong Lin,Tengfeng Xie
Ni-Doped ZnO nanofibers have been synthesized by a simple, facile electrospinning method. The structure and morphology of the products were characterized by SEM, HRTEM and XRD analysis. X-ray photoelectron spectroscopy (XPS) confirmed that Ni2+ ions exist in the ZnO nanofiber structures. The photoelectric gas-sensing tests reveal that the response was significantly enhanced by Ni doping, and the 0.7% molar ratio Ni-doped sample (NZ0.7) exhibits the highest response of 532.7% to 100 ppm HCHO at room temperature. Photoluminescence (PL) measurements show that there are more donors in Ni-doped ZnO nanofibers by the introduction of Ni2+ ions. Furthermore, the surface photovoltage (SPV) and transient photovoltage (TPV) tests indicated that Ni doping can effectively enhance the donor density, which could facilitate charge separation and transport in the semiconductor, and promote photogenerated holes to move toward the irradiated surface of the samples. These results contribute to the photocatalytic oxidation of HCHO so as to achieve higher gas-sensing properties for Ni-doped ZnO nanofibers.
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DOI
高影响因子
CHEMOSPHERE
·
2020
·
IF 5.778
Qiyuan Chen,Lu Liu,Lifen Liu,Yizhen Zhang
Emissions of volatile organic compounds (VOCs) air pollutants could worsen air quality and adversely affect human health, thus developing more efficient low-temperature VOCs removal techniques is desired. A novel continuous system integrating UV-assisted photo-electrochemical catalysis with microbial fuel cell (UV-assisted PEC-MFC) has been established for promoting removal of gaseous ethyl acetate or toluene and generating electricity simultaneously. In this system, CeO 2 /TiO 2 /ACF catalytic cathode is prepared and used for combination with bio-anode for accelerating cathodic reaction . This UV-assisted PEC-MFC system exhibits an excellent elimination capacity (EC) of ethyl acetate (∼0.39 g/m 3 , EC: ∼2.52 g/m 3 /h) or toluene (∼0.29 g/m 3 , EC: 1.89 g/m 3 /h) under close-circuit condition. Furthermore, an outstanding elimination capacity (EC: 28.04 g/m 3 /h) for high concentration toluene (∼4.10 g/m 3 ) removal is obtained after toluene gas passes sequentially through the catalytic cathode then the bio-anode. This way of PEC degradation and biodegradation, avoids inhibition of exoelectrogens activity from toxicity of high concentration toluene. Simultaneously, the cell voltage of UV-assisted PEC-MFC system is stable at 0.11 V (vs. SCE) and 1.452×10 −4 kWh is generated from treatment of toluene gas stream in 6 h duration time. The possible mechanism of VOCs removal in this novel system has been proposed and discussed. This study provides new technical basis for treating gaseous pollutants via integrating photo-electrochemical catalysis with electricity generating microbial fuel cell for energy conversion.
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DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Weiwei Han,Jiabao Fan,Hongmiao Lv,Yongli Yan,Chenwei Liu,Sanbao Dong
Foams are often employed as an efficient and cleaner method to remove the liquid accumulated at the bottom of the gas wells and promote the production of natural gas. However, the extreme conditions (e.g., high content of condensate, high salinity, high temperature, etc.) in the wells would retard the performance of the foaming agents. Usually, mixtures of different foaming surfactants were used to achieve high performances under those extreme conditions. In this paper, foams stabilized by surfactant mixtures containing alpha-olefin sulfonate (AOS), synthesized green cocamidopropyl betaine (CAPB) and modified quaternary ammonium Gemini surfactant (CAGB) in a proportion of 0.2:0.2:0.2 (wt%/wt%/wt%) were developed to evaluate their industrial application potential in gas well deliquification. The ternary surfactant (CAPB-CAGB-AOS) foam exhibited higher stability than the other dual surfactant foams and singular surfactant foams. Additionally, the foaming efficiency (defined as the ratio of the mass of water converted into foam to the mass of the initial liquid) and liquid unloading efficiency of the CAPB-CAGB-AOS mixture could be improved with the presence of condensate. Salts and methanol had a weak influence on the performance of the CAPB-CAGB-AOS foam. The introduction of ethylenediamine tetraacetic acid disodium (EDTA‧2Na) can enhance the performance of the CAPB-CAGB-AOS foam against salts. The temperature (> 60 °C) favored the foaming efficiency and liquid unloading efficiency of the CAPB-CAGB-AOS mixture, which reached up to 100% and 88.5% at 90 °C. These results indicated that the synergy effect of these three surfactants on the stability and liquid unloading efficiency of the foam can be confirmed. Moreover, the synergy effect can also be confirmed by the surface tension test , the foam's microstructure observation and the computational studies on calculated binding energies and electrostatic interactions .
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DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2021
·Vol. 168
·期 6
·067514
·
IF 4.316
Hao Wan,Xin Liu,Xinyi Wang,Yuantao Chen,Ping Wang
Gas sensors have attracted extensive attentions due to their vital roles in various applications. However, gas sensors featuring long lifetime, fast response and low cost still remain challenging. This paper presents a facile screen-printed carbon nanotube electrode on porous polytetrafluoroethylene (PTFE) with room temperature ionic liquid (RTIL) for rapid gas sensing. Screen printing technique was implemented on porous PTFE substrate to form three-electrode system using carbon nanotube ink and silver ink. Thus, gases can directly diffuse through the porous substrate rather than supporting electrolyte for rapid detection. RTIL was utilized as the supporting electrolyte that ensures long sensor lifetime. With gold nanoparticles modification, the sensor exhibited enhanced electrochemical performance for gas detection. Chronoamperometry was conducted to evaluate the sensor performance from 2.1% oxygen to 12.6% oxygen, validating good sensitivity and linearity. The sensor also presented good repeatability, stability and reproducibility in the tests. Due to the unique porous substrate of the sensor, the response time can be as low as ∼14 s that achieves rapid oxygen sensing. In summary, the sensor was validated with satisfactory performance, which is promising for wearable gas sensing and acute gas exposure alerting.
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Long Zheng,Stephen Jerrams,Zongchao Xu,Liqun Zhang,Li Liu,Shipeng Wen
Constructing strong interfacial interactions and complex filler networks is crucial to establishing high gas barrier properties in rubber composites. In this research, sulfur-graphene oxide (S-GO) hybrids were prepared by in situ growth of sulfur on the surfaces of GO sheets. The S-GO hybrids were also introduced into butadiene styrene rubber (SBR) using a green method of latex compounding. Results showed that sulfur could melt and spread on the surface of the GO during the crosslinking process at high temperatures. This process prevented the aggregation of GO and resulted in a fine dispersion of GO and complex filler networks in S-GO/SBR composites. More importantly, the sulfur particles on the GO surface not only aided the crosslinking of rubber molecules, but also chemically reacted with the GO radicals generated at high temperatures. This occurred by the homolytic cleavage of oxygen-containing groups, which thereby constructed covalent interfaces between the GO and SBR molecules. Due to these strong interfaces and complex filler networks, the tensile and tear strength of S-GO/SBR composites increased by 66.2% and 26.6%, respectively, when compared with conventional GO/SBR composites. The gas permeability coefficient of S-GO/SBR composites was decreased dramatically by 50.7% and 23.3% by comparison with that of pure SBR and GO/SBR composites, respectively. The apparent improvement demonstrated that the facile and effective method used in this research may open up new opportunities for the development of multifunctional rubber crosslinking agent as well as the fabrication of rubber composites with high performance.
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DOI
高影响因子
危险品化学品经营许可证（带存储）