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Xue M, Cai S, Deng Y, Luo F, Huang J, Lin Z. Portable T-2 toxin biosensor based on target-responsive DNA hydrogel using water column height as readout. Talanta 2024; 276:126203. [PMID: 38718648 DOI: 10.1016/j.talanta.2024.126203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Revised: 05/01/2024] [Accepted: 05/03/2024] [Indexed: 06/14/2024]
Abstract
T-2 toxin, a hazardous mycotoxin often present in cereals and products based on cereals, poses a substantial risk to humans and animals due to its high toxicity. The development of uncomplicated, quick and highly sensitive methods for detecting T-2 toxin is imperative. In this work, a portable sensing system was constructed using water column height as a readout device in combination with a controlled release system, which allows for an accurate quantitative analysis of T-2 toxin without the need for expensive instrumentation or skilled technicians. Hyaluronic acid (HA) hydrogel was constructed by double cross-linked DNA/aptamer hybrids with polyethyleneimine (PEI) and embedded with platinum nanoparticles (Pt NPs). The aptamer specifically bound to T-2 toxin in its presence, resulting in the disruption of the hydrogel and subsequent release of the Pt NPs. These Pt NPs were later mixed with a solution of H2O2 in a confined reaction flask, leading to the decomposition of H2O2 into O2. A glass capillary tube containing a column of red water had been inserted into the cap of the reaction flask, and the low solubility of O2 led to an increase in pressure within the reaction unit, causing the red water column to rise. There is a good linear correlation between the height of the capillary liquid level and the T-2 toxin concentration in the range of 20 ng/mL to 6 μg/mL. The system has been successfully used to detect T-2 toxin in samples of barley tea and corn.
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Affiliation(s)
- Meixiang Xue
- Fujian Provincial Key Laboratory of Ecology Toxicological Effects & Control for Emerging Contaminants, Key Laboratory of Ecological Environment and Information Atlas, Fujian Provincial University, College of Environmental and Biological Engineering, Putian University, Putian, Fujian, 351100, PR China
| | - Shuangxi Cai
- Fujian Provincial Key Laboratory of Ecology Toxicological Effects & Control for Emerging Contaminants, Key Laboratory of Ecological Environment and Information Atlas, Fujian Provincial University, College of Environmental and Biological Engineering, Putian University, Putian, Fujian, 351100, PR China
| | - Ye Deng
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, PR China
| | - Fang Luo
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, PR China
| | - Jianhui Huang
- Fujian Provincial Key Laboratory of Ecology Toxicological Effects & Control for Emerging Contaminants, Key Laboratory of Ecological Environment and Information Atlas, Fujian Provincial University, College of Environmental and Biological Engineering, Putian University, Putian, Fujian, 351100, PR China.
| | - Zhenyu Lin
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, PR China.
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Hou X, Gao X, Yang P, Niu Q, Liu Q, Yang X. Signal Modulation Induced by a Hole Transfer Layer Participant Photoactive Gate: A Highly Sensitive Organic Photoelectrochemical Transistor Sensing Platform. Anal Chem 2024; 96:11083-11091. [PMID: 38924704 DOI: 10.1021/acs.analchem.4c02261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2024]
Abstract
It is urgent to pursue appropriate gate photoactive materials for gate-to-channel signal modulation to achieve superior transconductance performances of organic photoelectrochemical transistor (OPECT) sensors. Notably, a hole transfer layer (HTL) participant CdZnS/sulfur-doped Ti3C2 MXene (S-MXene) gate was designed and developed in this work, which exhibited a remarkable signal modulation performance by up to 3 orders of magnitude. Because of the incorporation of S-MXene with an enhanced electrical conductivity as the effective HTL, the signal modulation capabilities of the CdZnS/S-MXene photoactive gate were superior to those of CdZnS and CdZnS/MXene. This incorporation inhibited the recombination of the interfacial charge and facilitated the transfer of photogenerated holes, thus enhancing the photoelectric conversion performance. This enhancement facilitated fast electron transfer with a larger effective photovoltage to augment the dedoping ability of channel ions. Based on these findings, an aptasensing platform that exhibited good performance was constructed using the proposed OPECT device, with ofloxacin as a model target and an aptamer for specific recognition. The developed OPECT aptasensor had various advantages, including a high sensitivity, good linear range (1.0 × 10-13 to 1.0 × 10-6 M), and low limit of detection (3.3 × 10-15 M). This study provided a proof-of-concept for the generalized development of HTL participant gates for OPECT sensors and other related applications.
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Affiliation(s)
- Xiuli Hou
- Key Laboratory of Modern Agricultural Equipment and Technology (Ministry of Education), School of Agricultural Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Xin Gao
- Key Laboratory of Modern Agricultural Equipment and Technology (Ministry of Education), School of Agricultural Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Peilin Yang
- Key Laboratory of Modern Agricultural Equipment and Technology (Ministry of Education), School of Agricultural Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Qijian Niu
- Key Laboratory of Modern Agricultural Equipment and Technology (Ministry of Education), School of Agricultural Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Qian Liu
- Key Laboratory of Modern Agricultural Equipment and Technology (Ministry of Education), School of Agricultural Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Xiaoyue Yang
- The International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
- Shanghai Key Laboratory of Embryo Original Diseases, Shanghai 200030, China
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Yang X, Zhao W, Wang A, Zhai X, Dou Y, Syed K, Zhu W. Novel metalloporphyrin covalently functionalized polyphosphazene nanotubes for boosting the hydrogen evolution reaction. Chem Commun (Camb) 2024; 60:5594-5597. [PMID: 38712665 DOI: 10.1039/d4cc01405g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Herein, we demonstrate the first example of a novel electrocatalytic hybrid system (CoTPP-PZSNT) with a push-pull motif to boost hydrogen evolution reaction (HER) activity. CoTPP-PZSNT exhibits an efficient HER activity, with overpotentials of 157 and 109 mV at 10 mA cm-2 in 1.0 M KOH and 0.5 M H2SO4 solutions, respectively. The HER performance of CoTPP-PZSNT outperforms many previously reported HER catalysts, due to efficient charge transfer between each component.
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Affiliation(s)
- Xin Yang
- School of Chemistry & Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China.
| | - Wei Zhao
- School of Energy & Power Engineering, Jiangsu University, Zhenjiang 212013, P. R. China.
| | - Aijian Wang
- School of Chemistry & Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China.
| | - Xiaoyu Zhai
- School of Chemistry & Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China.
| | - Yuqin Dou
- School of Chemistry & Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China.
| | - Kamal Syed
- School of Chemistry & Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China.
| | - Weihua Zhu
- School of Chemistry & Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China.
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Fan C, Lai J, Zhou X, Liu Y, Shao Z, Di K, You F, Ding L, Wang K. A bioetching-induced visualized-organic photoelectrochemical transistor dual-signal mode sensor for alkaline phosphatase detection. Chem Commun (Camb) 2024; 60:4581-4584. [PMID: 38576349 DOI: 10.1039/d4cc01174k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2024]
Abstract
A study of an integrated OPECT biosensor gate and the EC color-changing region on the same chip was carried out, achieving sensitive detection through bioetching-induced signal changes. Enzymatic bioetching enables specific alkaline phosphatase (ALP) detection by catalyzing the production of CdS, which modulates the channel current and generates a visual signal.
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Affiliation(s)
- Cunhao Fan
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
| | - Jingjie Lai
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
| | - Xilong Zhou
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
| | - Yuanhao Liu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
| | - Zhiying Shao
- Key Laboratory for Theory and Technology of Intelligent Agricultural Machinery and Equipment, Jiangsu University, Zhenjiang 212013, PR China
| | - Kezuo Di
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
| | - Fuheng You
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
| | - Lijun Ding
- Key Laboratory for Theory and Technology of Intelligent Agricultural Machinery and Equipment, Jiangsu University, Zhenjiang 212013, PR China
| | - Kun Wang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
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Wang T, Zhang M, Lu Y, Liu Q, Niu Q, You T. Metal-organic-framework-confined quantum dots enhance photocurrent signals: A molecularly imprinted photoelectrochemical cathodic sensor for rapid and sensitive tetracycline detection. Anal Chim Acta 2024; 1293:342269. [PMID: 38331550 DOI: 10.1016/j.aca.2024.342269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 01/08/2024] [Accepted: 01/19/2024] [Indexed: 02/10/2024]
Abstract
BACKGROUND Tetracycline (TC), a cost-effective broad-spectrum antibacterial drug, has been excessively utilized in the livestock and poultry industry, leading to a serious overabundance of TC in livestock wastewater. However, conventional analytical methods such as liquid chromatography and gas chromatography face challenges in achieving sensitive detection of trace amounts of TC in complex substrates. Therefore, it is imperative to develop a highly sensitive and anti-interference analytical method for the detection of tetracycline in livestock wastewater. RESULTS A porphyrin-based MOF (PCN-224)-confined carbon dots (CDs) material (CDs@PCN-224) was synthesized by a "bottle-around-ship" strategy. The reduced carrier migration distance is conducive to the separation of electron-hole pairs and enhanced the photocurrent signal due to the tight coupling of CDs and PCN-224. Further, molecularly imprinted polymer (MIP) was synthesized by rapid in-situ UV-polymerization and employed as a recognition element. The specific recognition of the target by imprinted cavities blocks electron transfer, resulting in a "turn off" response signal, thus realizing the selective detection of TC. Under optimal conditions, the constructed MIP-PEC cathodic sensor detected 1.00 × 10-12 M to 1.00 × 10-7 M of TC sensitively, with a limit of detection of 3.72 × 10-13 M. In addition, the proposed MIP-PEC sensor demonstrated good TC detection performance in actual livestock wastewater. SIGNIFICANCE The strategy based on MOF pore-confined quantum dots can effectively enhance the photocurrent response of the photosensitive substrate. Simultaneously, the MIP constructed by in-situ rapid UV-polymerization showed excellent anti-interference and reusable properties. This work provides a promising MIP-PEC cathodic sensing method for the rapid and sensitive detection of antibiotics in complex-matrix environmental samples.
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Affiliation(s)
- Tao Wang
- Key Laboratory of Modern Agriculture Equipment and Technology, Ministry of Education, School of Agricultural Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Mengge Zhang
- Key Laboratory of Modern Agriculture Equipment and Technology, Ministry of Education, School of Agricultural Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Yuhao Lu
- Key Laboratory of Modern Agriculture Equipment and Technology, Ministry of Education, School of Agricultural Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Qian Liu
- Key Laboratory of Modern Agriculture Equipment and Technology, Ministry of Education, School of Agricultural Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Qijian Niu
- Key Laboratory of Modern Agriculture Equipment and Technology, Ministry of Education, School of Agricultural Engineering, Jiangsu University, Zhenjiang, 212013, China.
| | - Tianyan You
- Key Laboratory of Modern Agriculture Equipment and Technology, Ministry of Education, School of Agricultural Engineering, Jiangsu University, Zhenjiang, 212013, China
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Liu Q, Guo Z, Hou X, Huang G, You T. Signal Modulation of Organic Photoelectrochemical Transistor by a Z-Scheme Photocathodic Gate: An Innovative Dual Amplification Strategy for Sensitive Aptasensing Application. Anal Chem 2023; 95:17108-17116. [PMID: 37948569 DOI: 10.1021/acs.analchem.3c04258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2023]
Abstract
Pursuing a more efficient signal amplification strategy is highly demanded for improving the performance of the promising cathodic photoelectrochemical (PEC) sensors. In this work, we present an extremely effective dual signal amplification strategy by the integration of a Z-scheme nanohybrids-based photocathode with the effective signal modulation of an organic photoelectrochemical transistor (OPECT) device. Specifically, photocathodic gate material of CdTe-BiOBr nanohybrids with a Z-scheme electron-transfer route was designed and synthesized for preliminary improvement of the activity of the photogate; afterward, signal modulation of the OPECT system by the photocathodic gate of CdTe-BiOBr was then accomplished for further signal amplification by 2 orders of magnitude. As a result, the output PEC signal of CdTe-BiOBr was enhanced by 17.5-fold as compared to BiOBr, and the channel current (IDS) of the OPECT device was 117-fold magnified than its gate current (IG) response. Exemplified by tetracycline (TC) as a model target and aptamer as the specific recognition element, a versatile cathodic aptasensing platform was constructed based on the proposed OPECT device. The introduced OPECT aptasensor merits advantages, including a good linear range (1.0 × 10-12 to 1.0 × 10-6 M), a low limit of detection (4.2 × 10-13 M), and superior sensitivity than the traditional PEC methods for TC detection, which represents a universal protocol for developing the innovative photocathodic OPECT sensing platform toward accurate analysis.
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Affiliation(s)
- Qian Liu
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
- CECEP Solar Energy Technology (Zhenjiang) Co., Ltd., Zhenjiang 212013, Jiangsu, China
| | - Zhijie Guo
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
| | - Xiuli Hou
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
| | - Guoping Huang
- CECEP Solar Energy Technology (Zhenjiang) Co., Ltd., Zhenjiang 212013, Jiangsu, China
| | - Tianyan You
- Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education, School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
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