Nanomaterials
·
2019
·Vol. 9
·期 12
·1714
·
IF 4.034
Weiping Liu,Ximing Zhang,Zhaofeng Wang,Ruijian Wang,Chen Chen,Chengjun Dong
Cd/In-glycerate spheres are synthesized through a simple solvothermal method. After thermal treatment, these Cd/In-glycerates can be converted into CdIn2O4spheres. Many characterization methods were performed to reveal the microstructure and morphology of the CdIn2O4. It was found that pure CdIn2O4phase was obtained for the Cd/In starting materials at ratios of 1:1.6. The CdIn2O4spheres are composed by a large number of nanoparticles subunits. The CdIn2O4sphere-based sensor exhibited a low detection limit (1 ppm), high response (81.20 to 500 ppm n-butanol), fast response (4 s) and recovery (10 s) time, good selectivity, excellent repeatability, and stability at 280 °C. Our findings highlight the possibility to develop a novel gas sensor based on CdIn2O4for application in n-butanol detection with high performance.Keywords:gas sensor;n-butnaol;CdIn2O4;spheres;solvothermal method
研究领域:
材料科学
·
化学传感器
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产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2021
·
IF 7.46
Xu Tian,Lijia Yao,Xiuxiu Cui,Rongjun Zhao,Xuechun Xiao,Yude Wang
Fast and effective detection of harmful gases is crucial criterion for the current development of gas sensors. In this paper, a novel n-butanol gas sensor using Al-doped CdIn 2 O 4 nanofibers (ACO NFs) is synthesized by an electrospinning method . The different morphologies of the as-prepared ACO NFs are controlled by doping different Al contents . Systematic characterizations demonstrate that the doping of Al to CdIn 2 O 4 NFs would enhance the reaction activities between the gas and sensing materials, such as generating large amounts of adsorbed oxygen and improving the specific surface area of sensing materials. The results show that the detection limit of all prepared sensors for n-butanol is sub-ppm, and less than 250 ppb. The optimal Al-doped CdIn 2 O 4 (5.0% Al/Cd molar ratio) based gas sensor results in 3.32-fold enhancement in gas response to 200 ppm n-butanol at an operating temperature of 300 °C and exhibits excellent long-term stability compared with the pure CdIn 2 O 4 . Hence, ACO NFs can be regarded as a promising sensing material for low-concentration n-butanol gas detecting. Also, the mechanisms for improving the sensing performance of ACO NFs based gas sensor are proposed.
研究领域:
材料科学
·
化学
✓ 已验证
DOI
高影响因子
Materials Today Communications
·
2020
·
IF 2.678
Yingjuan Wei,Guanjun Pan,Yi He
Developing a technique for the detection of nitro-alkanes, which are explosive and toxic, is vital. However, it is hard to selectively detect these compounds at low concentrations for early leakage warning. Here, a nanocomposite material was prepared to promote electron transfer and enhance the content of chemically absorbed oxygen by creating an n-n heterojunction between CdIn 2 O 4 and In 2 O 3 , leading to an enhanced response, shortened response time and reduced working temperature. As a result, the best sensor was found to exhibit an ultra-high response of 78 to 10 ppm nitropropane with quite a low detection limit of 50 ppb at 100 °C. Furthermore, the designed sensor was nearly insensitive to ethanol, acetone, hydrogen, CO, methanol, toluene and methane. Presently, the sensor demonstrated the highest response among those studied in previous investigations.
研究领域:
材料科学
·
传感技术
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DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2022
·
IF 4.598
Hui Shu,Sijia Peng,Tingrun Lai,Xiuxiu Cui,Jie Ren,Ting Chen,Xuechun Xiao,Yude Wang
The non-enzymatic glucose electrochemical sensors have great significance in the prevention and diagnosis of diabetes. In this work, Fe-CdIn 2 O 4 was grown in situ on the nickel foam with the one step non-aqueous sol-gel method. The nickel foam modified by Fe-CdIn 2 O 4 was directly used to detect glucose. The high specific surface area of the nickel foam enhances the contact surface with glucose, and effectively promotes the transmission of electrons. The 30% Fe-CdIn 2 O 4 had a good electrochemical performance for the detection of glucose when 30% Fe was combined with CdIn 2 O 4 . XRD showed that the 30% Fe-CdIn 2 O 4 had better crystallinity. SEM, SEM-Mapping, and TEM showed that the 30% Fe-CdIn 2 O 4 particles grew evenly and exposed abundant active sites. The detection results showed that the 30% Fe-CdIn 2 O 4 had an excellent response to glucose. The linear detection range was wide (0.01–1 mM), the limit detection was low (1.68 μM), the response time was rapid (2.65 s), as well as satisfactory stability, excellent selectivity, and great sensitivity (8992 μA·mM −1· cm −2 ). Meanwhile, based 30% Fe-CdIn 2 O 4 non-enzymatic electrochemical sensor was used to detect glucose in real human serum, and its detection performance was excellent. This study has practical application value in the detection of glucose in real human serum.
研究领域:
材料科学
·
生物医学工程
·
分析化学
✓ 已验证
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2022
·Vol. 169
·期 8
·087513
·
IF 4.386
Tingrun Lai,Sijia Peng,Hui Shu,Ting Chen,Xuechun Xiao,Yude Wang
Glucose concentration is an essential evaluation index for many diseases, so it is highly essential to develop a reliable sensor for quantitative glucose measurement. In this paper, based on the high conductivity of CdIn2O4, fast electron transfer rate and excellent electrocatalytic activity of transition metal Co, Co-CdIn2O4 is directly in situ grown on nickel foam conductive substrate, which has sizeable active surface area and three-dimensional interconnected properties by a simple non-aqueous sol-gel method. A series of electrochemical experiments proved that Co-CdIn2O4 material has better electrocatalytic activity than CdIn2O4. According to the detection results, it can be seen that Co-CdIn2O4/NF electrochemical sensor has high detection sensitivity for glucose, which is 13857 μA·mM−1·cm−2, a rapid response time of 1.56 s. The wide linear range of glucose is from 1–1 × 103 μM, and a low detection limit of 0.08 μM. At the same time, the prepared sensor also showed good selectivity and long-term stability. The recovery rates of glucose quantitative test in human serum samples are between 101.4% and 103.3%. All the above results demonstrate that the Co-CdIn2O4/NF sensor has promising usages in the direction of non-enzymatic glucose sensing.
研究领域:
生物医学工程
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yinghao Guo,Zhenyu Yuan,Haoting Zhang,Zhongming Guo,Fanli Meng
Industrial waste gas is the main force of environmental pollution, and its monitoring and control are particularly important. As a kind of chemical material and solvent commonly applied in industry, production and emissions of 2-butanone have been rising steadily year by year. It is particularly important for the detection of this gaseous substances. Spinel metal oxides have great potential in the field of gas detection, but the high calcination temperature of their synthesis often leads to the decrease of metal active sites on the surface and the loss of oxygen vacancies, which are not conducive to gas sensing performance. In this research, a hydrothermal method was adopted to synthesize In 2 O 3 nanospheres as hard templates, and the crystal structure of berry-like CdIn 2 O 4 was prepared at a low calcination temperature. The surface was enriched with an active site In. Gas-sensitive tests show that the CdIn 2 O 4 –2 step-500-based sensor has a sensitivity of 148 to 100 ppm 2-butanone gas and shows a low LOD (125 ppb) at 160 °C. The method in this paper not only provides a way to enhance spinel metal oxidation detection of 2-butanone gas, but also the prepared sensor has great application prospects in industrial monitoring.
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产品关联
DOI
高影响因子
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