MICROCHEMICAL JOURNAL
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2018
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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
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产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2022
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IF 5.304
Xin Zhang,Li Tian,Kexin Wu,Zhuo Sun,Qian Wu,Xiangyu Shan,Yingjie Zhao,Ruizhan Chen,Juan Lu
An electrochemical luminescence (ECL) sensor for the detection of glucose was constructed by covering CdTe nanomaterials, ZIF-7 and glucose oxidase (GOD) on the electrode surface, respectively. CdTe and ZIF-7, as co-reaction promoters, could amplify ECL signals through synergy effect. The results demonstrated that ECL intensity increased when the concentration of glucose increased. Based on the change of ECL intensity, a method for the determination of glucose was established. Possible response mechanisms were also studied. The parameters of measurement conditions were optimized. The linear range of glucose was 2.0 × 10 −10 ∼ 2.0 × 10 −5 mol L −1 and the detection limit was 6.7 × 10 −11 mol L −1 under the optimal conditions. The constructed sensor had high sensitivity and selectivity. The results were satisfactory for the determination of glucose in real human serum samples.
研究领域:
分析化学
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生物医学工程
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DOI
高影响因子
International Journal of Electrochemical Science
·
2023
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IF 1.5
Meng Jiang,Jing-Shuai Chen
A novel ultrasensitive electrochemiluminescence (ECL) biosensor was developed to detect uric acid (UA) based on Au NRs@TiO 2 nanocomposite. The Au NRs@TiO 2 nanocomposite was successfully prepared. The morphologies of Au NRs@TiO 2 nanocomposite were observed by scanning electron microscope (SEM), transmission electron microscopy (TEM). Morphological representation results showed that the nanomaterials were well dispersed and had a uniform surface. The characterization of electrochemiluminescence properties indicated that the Au NRs@TiO 2 possessed good ECL behavior. The Au NRs@TiO 2 nanocomposite was used to establish a highly sensitive electrochemiluminescence biosensor for the uric acid. A highly sensitive and selective electrochemiluminescence biosensor was established successfully which based on the Au NRs@TiO 2 nanocomposite. Under the optimal conditions, the biosensor shown a wide calibration range from 40 nM to 28 μM (R = 0.9985) with detection limit of 15 nM. The proposed electrochemiluminescence biosensor provided selective detection of uric acid range from 40 nM to 28 μM (R = 0.9985) with detection limit of 15 nM. This biosensor exhibited stable, sensitive and reproducible detection of uric acid, and was able to be used in clinical detection.
研究领域:
分析化学
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生物传感
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医学检测
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产品关联
DOI
高影响因子
CRYSTENGCOMM
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2021
·Vol. 24
·期 7
·1358-1367
·
IF 3.545
Yin-Xia Sun,Geng Guo,Wen-Min Ding,Wen-Yu Han,Juan Li,Zhe-Peng Deng
Heavy metal ions are common pollutants in water pollution. Amino acids, as important substances in organisms, participate in many life activities. The detection of heavy metal ions and amino acids with high selectivity and sensitivity is important. Therefore, based on H3L (H3L = 4,4′,4′′-triazine-2,4,6-tribenzoic acid) and Eu3+, an Eu-MOF was designed, synthesized and characterized. Single crystal structure analysis showed that the Eu-MOF was crystallized in the orthorhombic space group Fddd, and presents a three-dimensional (3D) porous network structure. The luminescence results show that the Eu-MOF has good luminescence stability. As a multifunctional luminescent sensor, the Eu-MOF can detect Fe3+, Cr2O72−, CrO42− and aspartic acid (Asp) in water systems with high sensitivity and selectivity, and the lowest detection limit (LOD) was 1.12 × 10−6 mol L−1, 1.95 × 10−6 mol L−1, 1.89 × 10−6 mol L−1 and 2.20 × 10−6 mol L−1, respectively. These results indicated that the Eu-MOF has potential application prospects in the detection of Fe3+, Cr2O72−, CrO42− and Asp in water.
研究领域:
化学
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环境科学
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材料科学
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DOI
高影响因子
MICROCHEMICAL JOURNAL
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2020
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IF 3.594
Xueling Shan,Yuting Pan,Fanzhuo Dai,Xiaohui Chen,Wenchang Wang,Zhidong Chen
A sensitive electrochemiluminescence (ECL) sensor in solid-state for the detection of tetracycline (TET), based on carboxylated carbon nanotubes modified ZnO (CNT-COOHs/ZnO), was developed in this research. The ZnO, which worked as luminophore here, was an environment-friendly material. Resulted from its tremendously specific surface area, the loading amount of CNT-COOHs increased. The CNT-COOHs played a role of catalyzer to enhance the ECL intensity of CNT-COOHs/ZnO modified glass carbon electrode (GCE) in triethanolamine (TEOA) contained electrolyte. After adding TET in the solution, the ECL intensity significantly quenched. The ΔECL intensity showed a good correlation to the concentration of TET in the range of 1.0 × 10 –8 –1.0 × 10 –4 M and the detection limit achieved to 6.7 × 10 –9 M within a response time of 1.0 min. Furthermore, the proposed CNT-COOHs/ZnO based ECL sensor was applied for the detection of TET in fishpond water and exhibited a good accuracy. We believe our system supplied a potential platform for the detection of TET in real world.
研究领域:
分析化学
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环境科学
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DOI
高影响因子
MOLECULES
·
2024
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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
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化学
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产品关联
DOI
PubMed
高影响因子
MICROCHIMICA ACTA
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2024
·Vol. 191
·期 11
·1-10
·
IF 5.3
Yang Shuning,Tian Li,Feng Yongbo,Song Yujia,Li Ruidan,Guo Yanjia,Li Huiling,Li Chao,Lu Juan
A highly sensitive molecularly imprinted electrochemiluminescence (MIECL) sensor was developed for detecting rifampicin (RIF) based on luminol@Co-MOF. Co-MOF had a significant enhancement of ECL signaling in the luminol-O 2 system. Molecular imprinted polymers (MIPs) with the introduction of RIF provide new properties for the specific recognition of RIF. A noteworthy decrease in ECL intensity was observed with higher concentrations of RIF. Consequently, the ECL signal was controlled by RIF elution from and adsorption by the MIP, thus establishing a new method for RIF detection. Under optimal conditions, this sensor exhibited linear detection ranges of RIF between 1.0 × 10 −11 mol L −1 and 1.0 × 10 −6 mol L −1 , with a detection limit of 3.3 × 10 −12 mol L −1 ( S / N = 3). The recoveries ranged between 98.1 and 106.0% in fish samples. This method can be used as a sensitive and rapid method to detect RIF in real samples. Graphical
研究领域:
分析化学
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药物检测
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
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2021
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IF 3.498
Han Zhang,Guan-Yu Ding,Afifa Yousaf,Li Chen,Xin-Long Wang,Guo-Gang Shan,Chun-Yi Sun,Zhong-Min Su
Luminescent sensors have received extensive attention due to their fast-response and easy-operation and when integrating multifunctions in a sensor, the cost will be reduced substantially. Covalent organic polymers (COPs) as multifunctional luminescent sensor with outstanding performance are still underexplored. In this work, a typical COP named as COP-2 show preponderant performance in the detection of Fe 3+ , MnO 4 − , and TNP. COP-2 has the highly efficient ability to selectively detect Fe 3+ among the other metal ions , and the limit of the detection (LOD) is 0.89 μ M, which outperforms the reported covalent organic materials. Anion sensing shows the COP-2 has the highly anti-interference ability and recyclicity to detect MnO 4 − . Explosive analogs sensing demonstrates that COP-2 owns the superior ability in sensing TNP in the knockdown concentration with 0.0067 ppm LOD, which superior to the values in the reported literature. In addition to the above superb sensing performance, COP-2 can be utilized as a white light-emitting diode (WLED) when combined with the commercial blue emission LED and presents a Commission Internationale de l’Eclairage (CIE) coordinate of (0.31, 0.32). These results show the COP-2 not only has an appealing performance in multifunctional luminescent sensing application, but also has a possible application in white light emitting.
研究领域:
材料科学
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化学传感
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光学器件
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产品关联
DOI
高影响因子
ANALYTICAL BIOCHEMISTRY
·
2025
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IF 2.5
Ziqi Wang,Yahui Ji,Nana You,Xiaoping Hu,Fangxin Du,Gen Liu
Epinephrine (EP), a vital hormone and neurotransmitter, is central to the body's fight-or-flight mechanism, boosting physical strength, mental focus, and reaction speed in high-stress scenarios. Measuring EP levels is key for analyzing stress reactions, identifying health disorders, and maintaining balanced physiological performance. In this work, we successfully synthesized cadmium-doped hollow mesoporous g-C 3 N 4 spheres (Cd@HMCNs) with a high surface area and high porosity. An electrochemiluminescent (ECL) sensor for EP detection was developed since EP can effectively suppresses the ECL emission of the Cd@HMCNs/K 2 S 2 O 8 system. The sensor successfully detected EP within the concentration range of 5.0 × 10 -10 mol·L -1 to 1.0 × 10 -5 mol·L -1 , with a detection limit as low as 1.67 × 10 -10 mol·L -1 . When applied to pharmaceutical sample testing, the proposed biosensor yielded reliable and satisfactory results.
研究领域:
分析化学
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生物医学工程
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纳米材料科学
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产品关联
DOI
PubMed
高影响因子
TALANTA
·
2024
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IF 5.6
Shuning Yang,Li Tian,Weiwei Fu,Huiling Li,Chao Li,Yujia Song,Ruidan Li,Yanjia Guo,Lun Zhao
The novel TiO 2 and Ni-MOF materials were synthesized and utilized for the detection of permethrin (PET). A highly sensitive solid-state electrochemiluminescence (ECL) sensor was developed based on Ni-MOF@Ru(bpy) 3 2+ and Au NPs@TiO 2 . In this sensing platform, Ru(bpy) 3 2+ -Tripropyl Amine (TPrA) was used as a luminescent signal, Ni-MOF acted as a carrier to carry more luminescent reagents Ru(bpy) 3 2+ . Au NPs acted as promoters facilitated electron transport and TiO 2 could further enhance the luminescence intensity of the system by synergistical interaction with Au NPs. The possible mechanisms of signal amplification were investigated. The ECL intensity decreased significantly with increasing PET concentration, enabling the determination of PET amount through the observation of the change in ECL signal intensity (ΔI). Under optimal experimental conditions, the linear range of PET concentration from 1.0 × 10 −11 mol L −1 to 1.0 × 10 −6 mol L −1 , with a detection limit of 3.3 × 10 −12 mol L −1 (3S/N). This method was successfully applied to determine PET in various vegetable samples.
研究领域:
分析化学
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环境科学
·
食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
TALANTA
·
2024
·
IF 5.6
Beibei Wang,Wenrui Zhao,Lin Wang,Kai Kang,Xianrui Li,Duo Zhang,Jujie Ren,Xueping Ji
Herein, a highly novel and effective electrochemiluminescence (ECL) sensor based on metal-organic framework (MOF, HKUST-1) derived CuO nanoneedles (HKUST-1 derived CuO NNs), gold nanoparticles (AuNPs) and TiO 2 was developed for ultrasensitive detection of catechol and luteolin. The HKUST-1 derived CuO NNs were employed as luminophore for the first time, which were successfully fabricated by using HKUST-1 as precursor. The results revealed that the HKUST-1 derived CuO NNs exhibit excellent ECL activity ascribed to its abundant active site and the high specific surface area, thus obviously promoting the separation and transfer of charge and further improving the current density of ECL sensor. To binary-amplify the signal of the ECL sensor, the AuNPs and TiO 2 nano-materials with good biocompatibility, great electron transport efficiency and high catalytic activity were used as co-reaction accelerators in the ECL process. Dependent on the above brilliant strategy, the proposed ECL sensor achieved wide linear ranges from 3 × 10 −9 – 1 × 10 −4 M for catechol and 1 × 10 −8 – 2 × 10 −4 M for luteolin, with the detection limits of 1.5 × 10 −9 M for catechol and 5.3 × 10 −9 M for luteolin, respectively. Furthermore, the ECL sensor exhibited outstanding selectivity, repeatability, stability and obtained great feedback on determination of catechol and luteolin in actual samples. The method not only filled a gap in the ECL application of MOF-derived materials but also provided a novel sight for design other highly efficient luminescent materials.
研究领域:
分析化学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Huiling Li,Li Tian,Shuning Yang,Chao Li,Ruidan Li,Yujia Song,Yanjia Guo,Xuwen Li
To sensitively monitor trace-level of malathion (MAT) in vegetable samples, an ultrasensitive solid-state electrochemiluminescence (ECL) sensor was proposed based on TiO 2 @CdSe and Ru(bpy) 3 2+ @Ag NPs. In this system, the introduction of Ag NPs enhanced the initial ECL signal of Ru(bpy) 3 2+ - tripropylamine (TPrA). When TiO 2 @CdSe was introduced into the system, the ECL signal was further enhanced, which may be due to the synergistic effect of the two complexes. Based on the fact that the addition of MAT causes ECL strength to decrease, a ECL sensor for the ultrasensitive trace detection of MAT has been successfully established. Under the optimized conditions, a wide liner detection range of MAT concentrations from 4.0 × 10 −14 to 4.0 × 10 −9 mol L −1 and a low detection limit (S/N = 3) of 1.3 × 10 −14 mol L −1 were obtained. The ECL sensor has been applied to the detection of vegetable samples and satisfactory results were obtained.
研究领域:
分析化学
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环境科学
·
食品安全
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）