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Mohit, Kumar S, Justin Thomas KR. Hydrazone-Linked Donor-Acceptor Covalent Organic Polymer as a Heterogeneous Photocatalyst for C-S Bond Formation. Chemistry 2024; 30:e202402196. [PMID: 39034289 DOI: 10.1002/chem.202402196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2024] [Revised: 07/10/2024] [Accepted: 07/17/2024] [Indexed: 07/23/2024]
Abstract
In the realm of solar energy utilization, there is a growing focus on designing and implementing effective photocatalytic systems, for the conversion of solar energy into valuable chemical fuels. The potential of Covalent Organic Polymers (COPs) as photocatalysts for visible-light-driven organic transformation has been widely investigated, positioning them as promising candidates in this field. In the design of COPs, introducing a donor-acceptor arrangement facilitates the transfer of electrons from the donor to the acceptor, creating a charge transfer complex and leading to enhanced conductivity and improved charge separation. Here we present a novel hydrazone-linked covalent organic polymer ETBC-PyHz containing TPE donor and pyridine acceptor. Utilizing this, an efficient method has been developed for an oxidative cross-coupling reaction involving C-S bond formation. This process involves arylhydrazines and arenethiols, and results in the production of unsymmetrical diaryl sulfides via the formation of aryl and thioarene radicals. This conversion holds significant importance because the byproducts produced during the process are nitrogen and water, making it environmentally benign.
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Affiliation(s)
- Mohit
- Organic Materials Laboratory, Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, 247667, India
| | - Sunil Kumar
- Organic Materials Laboratory, Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, 247667, India
| | - K R Justin Thomas
- Organic Materials Laboratory, Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, 247667, India
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2
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Ghosh P, De D, Sahoo P. Development of an assay for colorimetric and fluorometric detection of H 2S. RSC Adv 2024; 14:25071-25076. [PMID: 39135977 PMCID: PMC11317793 DOI: 10.1039/d4ra04339a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2024] [Accepted: 07/27/2024] [Indexed: 08/15/2024] Open
Abstract
Hydrogen sulfide is a highly toxic gas that can produce extremely rapid CNS and respiratory depression and sometimes becomes fatal at high concentrations. There is no proven antidote for hydrogen sulfide poisoning. Hence, it is important to reduce the production of H2S in several industries, such as oil and gas refining and mining industries. As a consequence, researchers are always inquisitive about inventing different sensing devices or useful tools to detect H2S selectively in a cost-effective manner. Colorimetric and fluorometric detection methods are the most attractive owing to their simplicity, profitability, ease of understanding, and "on-spot" detection convenience. In this research, we developed some colorimetric and fluorometric chemosensors and established an assay for the easy detection of H2S following a specific mechanism. The sensing mechanisms were well established through exhaustive spectroscopic studies and theoretical calculations. We first synthesized a series of chemosensors using 2-hydroxy naphthaldehyde as a primary fluorophore. The chemosensors were developed by incorporating various electron-releasing and donating groups while keeping the binding site unchanged. Subsequently, we compared their efficiency and binding ability towards H2S with a possible mechanism. The chemosensor was employed through a paper strip for demonstration as an "in-field" device by changing the naked-eye and fluorescence color both in liquid and gas phases.
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Affiliation(s)
- Priyotosh Ghosh
- Department of Chemistry, Visva-Bharati University Santiniketan-731235 India
| | - Diptiman De
- Department of Chemistry, Visva-Bharati University Santiniketan-731235 India
| | - Prithidipa Sahoo
- Department of Chemistry, Visva-Bharati University Santiniketan-731235 India
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3
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Sharma A, Eadi SB, Noothalapati H, Otyepka M, Lee HD, Jayaramulu K. Porous materials as effective chemiresistive gas sensors. Chem Soc Rev 2024; 53:2530-2577. [PMID: 38299314 DOI: 10.1039/d2cs00761d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2024]
Abstract
Chemiresistive gas sensors (CGSs) have revolutionized the field of gas sensing by providing a low-power, low-cost, and highly sensitive means of detecting harmful gases. This technology works by measuring changes in the conductivity of materials when they interact with a testing gas. While semiconducting metal oxides and two-dimensional (2D) materials have been used for CGSs, they suffer from poor selectivity to specific analytes in the presence of interfering gases and require high operating temperatures, resulting in high signal-to-noise ratios. However, nanoporous materials have emerged as a promising alternative for CGSs due to their high specific surface area, unsaturated metal actives, and density of three-dimensional inter-connected conductive and pendant functional groups. Porous materials have demonstrated excellent response and recovery times, remarkable selectivity, and the ability to detect gases at extremely low concentrations. Herein, our central emphasis is on all aspects of CGSs, with a primary focus on the use of porous materials. Further, we discuss the basic sensing mechanisms and parameters, different types of popular sensing materials, and the critical explanations of various mechanisms involved throughout the sensing process. We have provided examples of remarkable performance demonstrated by sensors using these materials. In addition to this, we compare the performance of porous materials with traditional metal-oxide semiconductors (MOSs) and 2D materials. Finally, we discussed future aspects, shortcomings, and scope for improvement in sensing performance, including the use of metal-organic frameworks (MOFs), covalent-organic frameworks (COFs), and porous organic polymers (POPs), as well as their hybrid counterparts. Overall, CGSs using porous materials have the potential to address a wide range of applications, including monitoring water quality, detecting harmful chemicals, improving surveillance, preventing natural disasters, and improving healthcare.
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Affiliation(s)
- Akashdeep Sharma
- Hybrid Porous Materials Laboratory, Department of Chemistry, Indian Institute of Technology Jammu, Jammu & Kashmir, 181221, India.
| | - Sunil Babu Eadi
- Department of Electronics Engineering, Chungnam National University, Daejeon, South Korea.
| | - Hemanth Noothalapati
- Faculty of Life and Environmental Sciences, Shimane University, Matsue, 690-8504, Japan
| | - Michal Otyepka
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, Šlechtitelů 27, 783 71 Olomouc, Czech Republic
- IT4Innovations, VSB-Technical University of Ostrava, 17. listopadu 2172/15, 708 00 Ostrava-Poruba, Czech Republic
| | - Hi-Deok Lee
- Department of Electronics Engineering, Chungnam National University, Daejeon, South Korea.
- Korea Sensor Lab, Department of Electronics Engineering, Chungnam National University, Daejeon, South Korea
| | - Kolleboyina Jayaramulu
- Hybrid Porous Materials Laboratory, Department of Chemistry, Indian Institute of Technology Jammu, Jammu & Kashmir, 181221, India.
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Fajal S, Dutta S, Ghosh SK. Porous organic polymers (POPs) for environmental remediation. MATERIALS HORIZONS 2023; 10:4083-4138. [PMID: 37575072 DOI: 10.1039/d3mh00672g] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
Modern global industrialization along with the ever-increasing growth of the population has resulted in continuous enhancement in the discharge and accumulation of various toxic and hazardous chemicals in the environment. These harmful pollutants, including toxic gases, inorganic heavy metal ions, anthropogenic waste, persistent organic pollutants, toxic dyes, pharmaceuticals, volatile organic compounds, etc., are destroying the ecological balance of the environment. Therefore, systematic monitoring and effective remediation of these toxic pollutants either by adsorptive removal or by catalytic degradation are of great significance. From this viewpoint, porous organic polymers (POPs), being two- or three-dimensional polymeric materials, constructed from small organic molecules connected with rigid covalent bonds have come forth as a promising platform toward various leading applications, especially for efficient environmental remediation. Their unique chemical and structural features including high stability, tunable pore functionalization, and large surface area have boosted the transformation of POPs into various macro-physical forms such as thick and thin-film membranes, which led to a new direction in advanced level pollutant removal, separation and catalytic degradation. In this review, our focus is to highlight the recent progress and achievements in the strategic design, synthesis, architectural-engineering and applications of POPs and their composite materials toward environmental remediation. Several strategies to improve the adsorption efficiency and catalytic degradation performance along with the in-depth interaction mechanism of POP-based materials have been systematically summarized. In addition, evolution of POPs from regular powder form application to rapid and more efficient size and chemo-selective, "real-time" applicable membrane-based application has been further highlighted. Finally, we put forward our perspective on the challenges and opportunities of these materials toward real-world implementation and future prospects in next generation remediation technology.
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Affiliation(s)
- Sahel Fajal
- Department of Chemistry, Indian Institute of Science Education and Research, Dr Homi Bhabha Road, Pashan, Pune 411008, India.
| | - Subhajit Dutta
- Department of Chemistry, Indian Institute of Science Education and Research, Dr Homi Bhabha Road, Pashan, Pune 411008, India.
| | - Sujit K Ghosh
- Department of Chemistry, Indian Institute of Science Education and Research, Dr Homi Bhabha Road, Pashan, Pune 411008, India.
- Centre for Water Research, Indian Institute of Science Education and Research, Dr Homi Bhabha Road, Pashan, Pune 411008, India
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Hu L, Sun C, Cheng R, Gao X, Zhou J, Wang Y, Jiang R, Zhu X, Liu P, Yan Z. A high-performance fluorescent and ratiometric colorimetric detection of Cu 2+ in practice. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023; 15:4656-4662. [PMID: 37667675 DOI: 10.1039/d3ay01082a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/06/2023]
Abstract
To monitor Cu2+ efficiently, a kind of D-π-A-π-D conjugated 3,5-di-(2-hydroxyl naphthaldehyde)-iminyl triazole (HNIT) was developed, using triazole as the electron acceptor, 2-hydroxyl naphthaline as the electron donor, and -CN- as the bridging group. The proposed HNIT possessed superior UV-vis and fluorescent spectral property with high molar absorption coefficient of 2.313 × 104 L mol-1 cm-1 and fluorescence quantum yield of 36.2%. Trace Cu2+ could exclusively alter its UV-vis and fluorescent property with clear color change. Under the optimized conditions, a high-performance fluorescent and ratiometric colorimetric detection of Cu2+ based on HNIT was efficient, with low detection limits of 3.3 × 10-8 mol L-1 (S/N = 3) and 9.6 × 10-8 mol L-1 (S/N = 3), respectively. It well satisfied with the safe value of 31.5 μM Cu2+ in drinking water recommended by World Health Organization (WHO). When applied for detection of Cu2+ in real environmental samples, the recovery was in the range of 97.5-105.2%. The recognition mechanism for HNIT to Cu2+ realized quite stable 6-membered rings between electron-deficient Cu2+ and electron-rich N and O atoms in HNIT with 1 : 2 chemical stoichiometry of HNIT to Cu2+.
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Affiliation(s)
- Lei Hu
- School of Chemistry and Chemical Engineering, Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, Qufu Normal University, Qufu, 273165, China.
| | - Chengjie Sun
- School of Chemistry and Chemical Engineering, Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, Qufu Normal University, Qufu, 273165, China.
| | - Renxiang Cheng
- School of Chemistry and Chemical Engineering, Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, Qufu Normal University, Qufu, 273165, China.
| | - Xinhong Gao
- School of Chemistry and Chemical Engineering, Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, Qufu Normal University, Qufu, 273165, China.
| | - Jiayi Zhou
- School of Chemistry and Chemical Engineering, Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, Qufu Normal University, Qufu, 273165, China.
| | - Yi Wang
- School of Chemistry and Chemical Engineering, Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, Qufu Normal University, Qufu, 273165, China.
| | - Ruping Jiang
- School of Chemistry and Chemical Engineering, Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, Qufu Normal University, Qufu, 273165, China.
| | - Xiao Zhu
- School of Chemistry and Chemical Engineering, Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, Qufu Normal University, Qufu, 273165, China.
| | - Peng Liu
- School of Chemistry and Chemical Engineering, Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, Qufu Normal University, Qufu, 273165, China.
| | - Zhengquan Yan
- School of Chemistry and Chemical Engineering, Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, Qufu Normal University, Qufu, 273165, China.
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Kader DA, Rashid SO, Omer KM. Green nanocomposite: fabrication, characterization, and photocatalytic application of vitamin C adduct-conjugated ZnO nanoparticles. RSC Adv 2023; 13:9963-9977. [PMID: 37006348 PMCID: PMC10050948 DOI: 10.1039/d2ra06575d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 03/15/2023] [Indexed: 03/31/2023] Open
Abstract
Recently, the conjugation of metal oxide nanoparticles with organic moieties has attracted the attention of many researchers for various applications. In this research, the green and biodegradable vitamin C was employed in a facile and inexpensive procedure to synthesize the vitamin C adduct (3), which was then blended with green ZnONPs to fabricate a new composite category (ZnONPs@vitamin C adduct). The morphology and structural composition of the prepared ZnONPs and their composites were confirmed by several techniques: Fourier-transform infrared (FT-IR) spectroscopy, field-emission scanning electron microscopy (FE-SEM), UV-vis differential reflectance spectroscopy (DRS), energy dispersive X-ray (EDX) analysis, elemental mapping, X-ray diffraction (XRD) analysis, photoluminescence (PL) spectroscopy, and zeta potential measurements. The structural composition and conjugation strategies between the ZnONPs and vitamin C adduct were revealed by FT-IR spectroscopy. The experimental results for the ZnONPs showed that they possessed a nanocrystalline wurtzite structure with quasi-spherical particles with a polydisperse size ranging from 23 to 50 nm, while the particle size appeared greater in the FE-SEM images (band gap energy of 3.22 eV); after loading with the l-ascorbic acid adduct (3), the band gap energy dropped to 3.06 eV. Later, under solar light irradiation, the photocatalytic activities of both the synthesized ZnONPs@vitamin C adduct (4) and ZnONPs, including the stability, regeneration and reusability, catalyst amount, initial dye concentration, pH effect, and light source studies, were investigated in detail in the degradation of Congo red dye (CR). Furthermore, an extensive comparison between the fabricated ZnONPs, composite (4), and ZnONPs from previous studies was performed to gain insights to commercialize the catalyst (4). Under optimum conditions, the photodegradation of CR after 180 min was 54% for ZnONPs and 95% for the ZnONPs@l-ascorbic acid adduct. Moreover, the PL study confirmed the photocatalytic enhancement of the ZnONPs. The photocatalytic degradation fate was determined by LC-MS spectrometry.
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Affiliation(s)
- Dana A Kader
- Department of Chemistry, College of Education, University of Sulaimani Kurdistan Region Iraq
| | - Srood Omer Rashid
- Department of Chemistry, College of Education, University of Sulaimani Kurdistan Region Iraq
- Department of Chemistry, College of Science, University of Sulaimani Kurdistan Region Iraq
| | - Khalid M Omer
- Department of Chemistry, College of Science, University of Sulaimani Kurdistan Region Iraq
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7
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Cai G, Wang T, Wei Q, Tong C, Cao Y, Shi S, Chen Y, Guo Y. Weaving microscale wool ball-like hollow covalent organic polymers from nanorods for efficient adsorption and sensing. Chem Commun (Camb) 2022; 58:11571-11574. [PMID: 36165975 DOI: 10.1039/d2cc04254a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Microscale covalent organic polymers with a unique 3D hollow wool ball-like morphology have been woven from 1D nanorods by a cascade emulsion strategy with a large surface area (284 m2 g-1), which showed great potential for simultaneous removal (Qmax, 358.15 mg g-1) and fluorescent detection (detection limit, 8.0 μg L-1) of bisphenol A.
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Affiliation(s)
- Guihan Cai
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China.
| | - Tongtao Wang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China.
| | - Qisheng Wei
- Natural Product Research Laboratory, Guangxi Baise High-tech Development Zone, Baise 533612, Guangxi, China
| | - Chaoying Tong
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China.
| | - Yuanxin Cao
- Natural Product Research Laboratory, Guangxi Baise High-tech Development Zone, Baise 533612, Guangxi, China
| | - Shuyun Shi
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China. .,Natural Product Research Laboratory, Guangxi Baise High-tech Development Zone, Baise 533612, Guangxi, China.,Department of Clinical Pharmacology, Xiangya Hospital, Hunan Key Laboratory of Pharmacogenetics, Central South University, Changsha 410078, Hunan, China.
| | - Yuxia Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China.
| | - Ying Guo
- Department of Clinical Pharmacology, Xiangya Hospital, Hunan Key Laboratory of Pharmacogenetics, Central South University, Changsha 410078, Hunan, China.
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8
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Wang S, Li H, Huang H, Cao X, Chen X, Cao D. Porous organic polymers as a platform for sensing applications. Chem Soc Rev 2022; 51:2031-2080. [PMID: 35226024 DOI: 10.1039/d2cs00059h] [Citation(s) in RCA: 65] [Impact Index Per Article: 32.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Sensing analysis is significantly important for human health and environmental safety, and has gained increasing concern. As a promising material, porous organic polymers (POPs) have drawn widespread attention due to the availability of plentiful building blocks and their tunable structures, porosity and functions. Moreover, the permanent porous nature could provide a micro-environment to interact with guest molecules, rendering POPs attractive for application in the sensing field. In this review, we give a comprehensive overview of POPs as a platform for sensing applications. POP-based sensors are mainly divided into five categories, including fluorescence turn-on sensors, fluorescence turn-off sensors, ratiometric fluorescent sensors, colorimetric sensors and chemiresistive sensors, and their various sensing applications in detecting explosives, metal ions, anions, small molecules, biological molecules, pH changes, enantiomers, latent fingerprints and thermosensation are summarized. The different structure-based POPs and their corresponding synthetic strategies as well as the related sensing mechanisms mainly including energy transfer, donor-acceptor electron transfer, absorption competition quenching and inner filter effect are also involved in the discussion. Finally, the future outlook and perspective are addressed briefly.
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Affiliation(s)
- Shitao Wang
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Hongtao Li
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Huanan Huang
- School of Chemistry and Environmental Engineering, Jiujiang University, Jiujiang 222005, China
| | - Xiaohua Cao
- School of Chemistry and Environmental Engineering, Jiujiang University, Jiujiang 222005, China
| | - Xiudong Chen
- School of Chemistry and Environmental Engineering, Jiujiang University, Jiujiang 222005, China
| | - Dapeng Cao
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China.
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Mu B, Cao G, Zhang L, Zou Y, Xiao X. Flexible wireless pH sensor system for fish monitoring. SENSING AND BIO-SENSING RESEARCH 2021. [DOI: 10.1016/j.sbsr.2021.100465] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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10
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Peng WL, Kan X, Chen W, Mi J, Zhang G, Xiao Y, Liu W, Liu F, Zheng A. Efficiently Selective Oxidation of H 2S to Elemental Sulfur over Covalent Triazine Framework Catalysts. ACS APPLIED MATERIALS & INTERFACES 2021; 13:34124-34133. [PMID: 34256569 DOI: 10.1021/acsami.1c06667] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
As a highly toxic and corrosive waste gas in the industry, hydrogen sulfide (H2S) usually originates from the utilization of coal, petroleum, and natural gas. The selective catalytic elimination of H2S shows great significance to ensure the safety of industrial processes and health of human beings. Herein, we report efficiently selective oxidation of H2S to elemental sulfur over covalent triazine framework (CTF-1-x, x = 400, 500, 600, 400-600 °C) catalysts. CTF-1-x samples were prepared from polymerization of 1,4-dicyanobenzene to form polyaryl triazine networks under ion solidothermal conditions in the presence of ZnCl2, which acts as both an initiator and a porogen. The resultant CTF-1-x samples possess abundant micro-mesoporosity, large Brunauer-Emmett-Teller (BET) surface areas, and tunable structural base sites with edge amine and graphitic nitrogen characteristics, which were homogeneously decorated onto their frameworks. As a result, CTF-1-x samples act as efficient and long-lived catalysts in selective oxidation of H2S to sulfur under ambient conditions (100% H2S conversion, 100% sulfur selectivity at 180 °C, 12 000 mL/(g·h)), and their activities were superior to those of commercial Fe2O3 and g-C3N4 desulfurization catalysts. Abundant nitrogen structural base sites of CTF-1-x effectively activate the reactants, and abundant micro-mesoporosity facilitates mass transfer in and out of CTF-1-x. The improved design of the nitrogen-doped carbon material for H2S activation and conversion could enhance the development of more active and robust nitrogen-doped carbon catalysts.
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Affiliation(s)
- Wen-Li Peng
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Xun Kan
- National Engineering Research Center of Chemical Fertilizer Catalyst (NERC-CFC), School of Chemical Engineering, Fuzhou University, Fuzhou 350002, Fujian, P. R. China
| | - Wei Chen
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, P. R. China
| | - Jinxing Mi
- National Engineering Research Center of Chemical Fertilizer Catalyst (NERC-CFC), School of Chemical Engineering, Fuzhou University, Fuzhou 350002, Fujian, P. R. China
| | - Guanqing Zhang
- National Engineering Research Center of Chemical Fertilizer Catalyst (NERC-CFC), School of Chemical Engineering, Fuzhou University, Fuzhou 350002, Fujian, P. R. China
| | - Yao Xiao
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Wentao Liu
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, Henan 450001, P. R. China
| | - Fujian Liu
- National Engineering Research Center of Chemical Fertilizer Catalyst (NERC-CFC), School of Chemical Engineering, Fuzhou University, Fuzhou 350002, Fujian, P. R. China
| | - Anmin Zheng
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, P. R. China
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A Paper-Based Ultrasensitive Optical Sensor for the Selective Detection of H2S Vapors. CHEMOSENSORS 2021. [DOI: 10.3390/chemosensors9020040] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A selective and inexpensive chemical paper-based sensor for the detection of gaseous H2S is presented. The triggering of the sensing mechanism is based on an arene-derivative dye which undergoes specific reactions in the presence of H2S, allowing for colorimetric analysis. The dye is embedded into a porous cellulose matrix. We passively exposed the paper strips to H2S generated in situ, while the absorbance was monitored via an optic fiber connected to a spectrophotometer. The kinetics of the emerging absorbance at 534 nm constitute the sensor response and maintain a very stable calibration signal in both concentration and time dimensions for quantitative applications. The time and concentration dependence of the calibration function allows the extraction of unusual analytical information that expands the potential comparability with other sensors in the literature, as the limit of detection admissible within a given exposure time. The use of this specific reaction ensures a very high selectivity against saturated vapors of primary interferents and typical volatile compounds, including alkanethiols. The specific performance of the proposed sensor was explicitly compared with other colorimetric alternatives, including standard lead acetate strips. Additionally, the use of a smartphone camera to follow the color change in the sensing reaction was also tested. With this straightforward method, also affordable for miniature photodiode devices, a limit of detection below the ppm scale was reached in both colorimetric approaches.
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