SENSORS AND ACTUATORS B-CHEMICAL
·
2017
·
IF 5.401
Guolong Shi,Yigang He,Qiwu Luo,Bing Li,Chaolong Zhang
Portable sensor system was constructed for detection of acetone vapor based on the cataluminescence (CTL) theory. Excellent microspheres were prepared successfully which increased the contact probability with vapors. The instrument architecture, optimal experiment conditions and measurement characteristics were discussed in detail. The results showed the CTL sensor instrument exhibited excellent CTL properties including visible intensity, high signal/noise (S/N) values, short response time (within 2 s) and recovery time (within 3 s). The sensor instrument covered a linear test range from 5 ppm to 2500 ppm, while the sensor showed non-linearity when concentration ranged from 2500 ppm to 8000 ppm. Furthermore, the sensor system showed outstanding selectivity to acetone compared with other ten kinds of common vapors. Moreover, the CTL sensor also showed an excellent response for H 2 S, the CTL performance of H 2 S under different wavelength and temperature was also discussed. The excellent sensing and online detecting properties proved this sensor instrument to be an excellent candidate for real-time gas contaminant detection. Finally, the sensing control processes and monitoring software interface was also presented.
研究领域:
分析化学
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环境科学
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传感技术
✓ 已验证
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2018
·
IF 2.746
Pingyang Cai,Hongjie Song,Yi Lv
In the present work, three different kinds of In 2 S 3 : hierarchical microspheres A, B and C (HMa, HMb and HMc), which were synthesized by a hydrothermal method in the sodium dodecyl sulfate-thiourea (SDS-thiourea) system. XRD, SEM and BET were used to characterize the prepared In 2 S 3 materials. Compared with the other two kinds of In 2 S 3 , the as-prepared In 2 S 3 hierarchical microspheres B (In 2 S 3 HMb) exhibit the best cataluminescence response to ammonium sulfide. The response and recovery times of the home-made ammonium sulfide gas sensor with In 2 S 3 hierarchical microspheres B as sensing materials were about 8 s and 24 s, respectively. The linear dependence of the sensitivity on the ammonium sulfide concentration was observed in the range of 4–200 ppm with an excellent selectivity. These results indicated that In 2 S 3 hierarchical microspheres B would be a good candidate for fabricating practical cataluminescence ammonium sulfide sensor.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
MEASUREMENT SCIENCE and TECHNOLOGY
·
2022
·Vol. 34
·期 2
·025106
·
IF 2.398
Qianchun Zhang,Qin Zhou,Yun Wu,Yanxin Li,Fengling Tian,Shan Tang,Li Jiang
In this study, MIL-53(Al) and Sb2SnO5 were synthesized by hydrothermal and precipitation methods, respectively. The doped MIL-53(Al)/Sb2SnO5 showed excellent catalytic properties, specifically for selectivity and sensitivity for isobutanol (IBN). To assess the catalytic properties of MIL-53(Al)/Sb2SnO5, an IBN gas sensor based on cataluminescence of MIL-53(Al)/Sb2SnO5 was developed, and it demonstrated detection of IBN with high sensitivity, high specificity, fast detection, and good stability. The signal response and recovery time of IBN gas sensor were 0.5 s and 6 s, respectively, and a good linear relation was 0.050–2.5 μg ml−1 (R2 = 0.9956) with a low detection limit of 0.015 μg ml−1. Further, the IBN sensor applied in the detection of real samples had satisfactory recoveries (90.0%–108%) with relative standard deviations of 3.2%–6.7%. The developed sensor based on MIL-53(Al)/Sb2SnO5 has great prospects for the practical detection of IBN gas in the fields of environmental analysis, safety monitoring, etc.
研究领域:
材料科学
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环境分析
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传感技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2024
·
IF 5.3
Qianchun Zhang,Yuxian Zhao,Zhaoru Ban,Li Jiang,Shan Tang
Cataluminescence (CTL) sensors are among the most simple, inexpensive, sensitive, and selective tools for gas sensing. This study presented a highly efficient and selective CTL sensor system based on mesoporous SiO2 nanomicrospheres for the quick and sensitive analysis of isobutyraldehyde. Furthermore, its response intensity was 12.7 times higher than that of a nonmesoporous SiO2-based sensor. The constructed CTL sensor exhibited a good linear range (R2 = 0.997) for detecting isobutyraldehyde, spanning 3.11–311 ppm, with a low detection limit of 1.1 ppm. This enabled successful analysis of trace isobutyraldehyde in real samples. Finally, the CTL mechanism of this sensor was further explored. This study presents an approach for the quality detection of an important volatile organic compound, isobutyraldehyde, by a mesoporous-based CTL sensor.
研究领域:
材料科学
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分析化学
✓ 已验证
产品关联
DOI
高影响因子
MOLECULES
·
2019
·Vol. 24
·期 23
·4275
·
IF 3.06
Qian-Chun Zhang,Wu-Li Yan,Li Jiang,Yu-Guo Zheng,Jing-Xin Wang,Run-Kun Zhang
In this work, we successfully developed a novel and sensitive gas sensor for the determination of trace acetophenone based on its cataluminescence (CTL) emission on the surface of nano-praseodymium oxide (nano-Pr6O11). The effects of working conditions such as temperature, flow rate, and detecting wavelength on the CTL sensing were investigated in detail. Under the optimized conditions, the sensor exhibited linear response to the acetophenone in the range of 15–280 mg/m3(2.8–52 ppm), with a correlation coefficient (R2) of 0.9968 and a limit of detection (S/N = 3) of 4 mg/m3(0.7 ppm). The selectivity of the sensor was also investigated, no or weak response to other compounds, such as alcohols (methanol, ethanol,n-propanol,iso-propanol,n-butanol), aldehyde (formaldehyde and acetaldehyde), benzenes (toluene,o-xylene,m-xylene,p-xylene),n-pentane, ethyl acetate, ammonia, carbon monoxide, carbon dioxide. Finally, the present sensor was applied to the determination of acetophenone in human exhaled breath samples. The results showed that the sensor has promising application in clinical breath analysis.Keywords:cataluminescence;sensor;acetophenone;Pr6O11
研究领域:
分析化学
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医学检测
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2023
·
IF 4.8
Yu Zhou,Hui Gong,Hou-Jing Liu
Efficient, selective and highly sensitive detection of H 2 S is important for environmental protection and human security. Nanomaterials-based cataluminescence (CTL) sensors, especially metal-free catalysts, have been used for gas sensing. Herein, due to the efficient electron transfer and high specific area of silicon nitride (Si 3 N 4 ), combined with the strong electronegativity of fluorine and oxygen, we purposely synthesized F and O-modified Si 3 N 4 (F/O-Si 3 N 4 ) by engineering surface states and catalytic properties. We then used it to construct a H 2 S CTL gas sensor. Compared with other metal-based CTL sensors, the F/O-Si 3 N 4 -based CTL system exhibited high sensitivity and a longer lifetime stability. The detection limit was 0.027 μg mL −1 in the detection range of 0.49–8.17 μg mL −1 , and a relative standard deviation (RSD) of better than 3.3% were obtained. Further research demonstrated the luminescence mechanism, in which the rich oxygen vacancies of Si 3 N 4 promoted the adsorption of O 2 and the formation of F-Si sites due to the catalytic oxidation of H 2 S and the generation of SO 2 *. This served as the main emitter accounting for the strong CTL emission. This work is the first report of the application of Si 3 N 4 as a catalyst for CTL H 2 S sensing. This will expand the methods for enhancing the catalytic activity and practical applications of metal-free materials.
研究领域:
材料科学
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环境科学
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传感器技术
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
·
2018
·
IF 4.244
Feifei Meng,Zhenyu Lu,Runkun Zhang,Gongke Li
In this paper, a gaseous sensor was described for detection of iso -butanol on the basis of its strong cataluminescence (CTL) emission on nano-MgO surface. The sensor showed high sensitivity and specificity to iso -butanol with response time less than 1 s and recovery time less than 18 s. A good linearly relationship between CTL intensity and the concentration of iso -butanol was observed in the range of 7.6–3350 mg/m 3 ( r = 0.9992), the limit of detection was 2.5 mg/m 3 . The proposed CTL sensor exhibits good specificity to iso -butanol against other compounds including common alcohols. The possible reaction paths of iso -butanol on the MgO surface were investigated in detail. Results shows that the hydrogen atom abstraction of iso -butanol to form β -R iso following consumption via Waddington mechanism possible is a major reaction channel for CTL emission. The sensor was applied to analyze iso -butanol in spiked samples, satisfactory recoveries were obtained in the range of 96.6–112.8% and the RSDs were 5.0–10.1%, indicating that the proposed sensor is a promising candidate for rapid analysis of iso -butanol.
研究领域:
化学传感器
·
分析化学
✓ 已验证
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2022
·
IF 5.304
Yanjun Wu,Zhicong Lin,Na Chen,Jingxin Wang,Runkun Zhang
In the present work, Lanthanum oxycarbonate (La 2 O 2 CO 3 ) nanosheets with network structure were synthesized by a simple precipitation method and their performances as cataluminescence (CTL) sensor for tetrahydrofuran (THF) were investigated. The structure, morphology and chemical states of as-prepared La 2 O 2 CO 3 were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. The sensing conditions include working temperature, detection wavelength and the flow rate of carrier gas were optimized. Under the optimal conditions, the sensor shows high sensitive and selective response to THF. The linear range of CTL intensity versus tetrahydrofuran concentration is 59–870 mg m −3 ( R 2 = 0.9933) with a limit of detection of 18 mg m −3 (the signal to noise is 3). In order to demonstrate the potential application, the sensor was applied to measure real air samples contain THF, and the obtained results were consistent with those measured by gas chromatography method. The possible sensing mechanism was also discussed based on the reaction product from the catalytic oxidation of THF on La 2 O 2 CO 3 surface. Compared with the previous CTL sensor for THF, the present senor shows better specificity, and has a lower working temperature. The present work provides a promising method for rapid detection of THF in concerning locations, such as in residential buildings and in the manufacturing plants.
研究领域:
材料科学
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环境监测
·
化学传感
✓ 已验证
产品关联
DOI
高影响因子
MOLECULES
·
2024
·
IF 4.2
Qianchun Zhang,Xixi Long,Shan Tang,Li Jiang,Zhaoru Ban,Yanju Chen,Runkun Zhang
A simple, rapid, and reliable method for detecting harmful gases is urgently required in environmental security fields. In this study, a highly effective cataluminescence sensor based on SiO 2 /MIL-53(Al) composites was developed to detect trace isobutylaldehyde. The sensor was designed using isobutylaldehyde to generate an interesting cataluminescence phenomenon in SiO 2 /MIL-53(Al). Under optimized conditions, a positive linear relationship was observed between the signal intensity of the cataluminescence and isobutylaldehyde concentration. The isobutylaldehyde concentration range of 1.55–310 ppm responded well to the sensing test, with an excellent correlation coefficient of 0.9996. The minimum detectable concentration signal-to-noise ratio ( S/N = 3) was found to be 0.49 ppm. In addition, the sensor was effectively utilized for analyzing trace isobutylaldehyde; the analysis resulted in recoveries ranging from 83.4% to 105%, with relative standard deviations ( RSDs ) of 4.8% to 9.4%. Furthermore, the mechanism of cataluminescence between SiO 2 /MIL-53(Al) and isobutylaldehyde was explored using GC–MS analysis and density functional theory. We expect that this cataluminescence methodology will provide an approach for the environmental monitoring of isobutylaldehyde.
研究领域:
环境科学
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材料科学
·
化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MEASUREMENT SCIENCE and TECHNOLOGY
·
2020
·Vol. 31
·期 9
·095102
·
IF 1.857
Qianchun Zhang,Qin Zhou,Yan Wang,Yun Wu,Li Jiang,Yuguo Zheng,Junyi Liang
We report that cyclopentanone on the surface of nanosized dysprosium oxide (nano-Dy2O3) has strong chemiluminescence emission. A cyclopentanone gas sensor was built based on this phenomenon with a response time of 3 s and a recovery time of 10 s. The cataluminescence characteristics and factors affecting the signal intensity of cyclopentanone sensor were investigated in detail including selecting the appropriate sensing material, detection wavelength, working temperature, and air flow rate. Under these optimized conditions, the calibration curve of the cataluminescence intensity versus cyclopentanone vapor concentration was linear over 0.100–15.0 μg ml−1 with a correlation coefficient (R2) of 0.9973; the limit of detection was 17 mg m−3 (signal/noise = 3). The relative standard deviation (RSD, n = 10) was 1.86% for ten replicates. The selectivity was significantly higher for the target analyte. The sensor was then used to analyze cyclopentanone in spiked samples and organic laboratory environment sample. The results show satisfactory recoveries of 93.3%–108% and RSDs of 7.9%–8.6% indicating that the developed sensor has the potential for the rapid analysis of cyclopentanone.
研究领域:
分析化学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
MEASUREMENT SCIENCE and TECHNOLOGY
·
2014
·Vol. 25
·期 8
·085105
·
IF 1.352
Yixin Chu,Qianchun Zhang,Wanqin Zhang,Guoyi Zhang,Shouli Zhu
A gaseous sensor was developed for the determination of dimethyl ether (DME) on the basis of its cataluminescence (CTL) emission on the surface of MgO/In2O3 composite (mass ratio = 1:2). The sensor exhibited high sensitivity and selectivity to DME at a temperature of 245 °C. Under the optimized experimental conditions, the linear range of CTL intensity versus DME concentration was 50–12 000 ppm with a limit of detection of 14 ppm (signal to noise (S/N) = 3). By selecting the appropriate ratio of MgO to In2O3 and the detecting wavelength, the CTL intensities of ether and ethanol could be reduced to 7.3% and 3.9% compared with that of DME. For other compounds, including carbon tetrachloride, formaldehyde, dimethyl sulfate and methyl acetate, etc, no emissions or only very weak ones were detected. The sensor was applied to analyze samples spiked with known concentrations of DME. The concentrations of DME in all samples were well quantified with satisfactory recoveries.
研究领域:
分析化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2021
·
IF 7.46
Suqin Xiong,Shuguang Yan,Lichun Zhang,Yi Lv
Graphitic carbon nitride, as an excellent metal-free catalyst, is a promising candidate for cataluminescence (CTL) sensing of H 2 S owing to its high sulfur tolerance, environmental friendliness and low cost. Herein, in view of inner chemical inertness and low special surface area of g-C 3 N 4 , fluorine with strong electronegativity was employed to adjust the electron density of g-C 3 N 4 to obtain fluorine functionalized graphitic carbon nitride (F-g-C 3 N 4 ) for H 2 S sensing. As expected, the CTL response of F-g-C 3 N 4 exhibits more than 30 times higher towards H 2 S by contrast with that of g-C 3 N 4 . Results demonstrated that F-g-C 3 N 4 was more conducive to the adsorption of O 2 and H 2 S due to the enlarged special surface area, the easier formation of hydrogen bond and the changed electronic structure, which was also supported by density functional theory calculations. Additionally, the F-g-C 3 N 4 -based sensor exhibits as high sensitivity as that of metal catalyst-based sensors but a longer lifetime. Meanwhile, the F-g-C 3 N 4 -based sensor has much higher CTL responses in the range of 1.27∼64.00 μg mL −1 , lower detection limit of 0.07 μg mL −1 when comparing with previously reported metal-free catalyst-based sensors. Undoubtedly, this work not only opened up a novel approach to improve the sensing performance of g-C 3 N 4 , but also proposed an efficient strategy for obtaining satisfying catalytic performance of other metal-free layered materials.
研究领域:
材料科学
·
环境科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）