1
|
Zhang X, Zhang X, Yang H, Cheng X, Zhu YG, Ma J, Cui D, Zhang Z. Spatial and temporal changes of air quality in Shandong Province from 2016 to 2022 and model prediction. JOURNAL OF HAZARDOUS MATERIALS 2024; 477:135408. [PMID: 39096641 DOI: 10.1016/j.jhazmat.2024.135408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 07/30/2024] [Accepted: 07/31/2024] [Indexed: 08/05/2024]
Abstract
This study investigates the spatial and temporal dynamics of air quality in Shandong Province from 2016 to 2022. The Air Quality Index (AQI) showed a seasonal pattern, with higher values in winter due to temperature inversions and heating emissions, and lower values in summer aided by favorable dispersion conditions. The AQI improved significantly, decreasing by approximately 39.4 % from 6.44 to 3.90. Coastal cities exhibited better air quality than inland areas, influenced by industrial activities and geographical features. For instance, Zibo's geography restricts pollutant dispersion, resulting in poor air quality. CO levels remained stable, while O3 increased seasonally due to photochemical reactions in summer, with correlation coefficients indicating a strong positive correlation with temperature (r = 0.65). Winter saw elevated NO2 levels linked to heating and vehicular emissions, with an observed increase in correlation with AQI (r = 0.78). PM2.5 and PM10 concentrations were higher in colder months due to heating and atmospheric dust, showing a significant decrease of 45 % and 40 %, respectively, over the study period. Predictive modeling forecasts continued air quality improvements, contingent on sustained policy enforcement and technological advancements. This approach provides a comprehensive framework for future air quality management and improvement.
Collapse
Affiliation(s)
- Xu Zhang
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan 250101, China; Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Xinrui Zhang
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan 250101, China
| | - Huanhuan Yang
- School of Life Sciences, Qilu Normal University, Jinan 250200, China.
| | - Xu Cheng
- Institute for Advanced Technology, Shandong University, Jinan 250061, China
| | - Yong Guan Zhu
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Jun Ma
- School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Dayong Cui
- School of Life Sciences, Qilu Normal University, Jinan 250200, China
| | - Zhibin Zhang
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan 250101, China; School of Environment, Harbin Institute of Technology, Harbin 150090, China.
| |
Collapse
|
2
|
Zhou K, Tang L, Zhu C, Tang J, Su H, Luo L, Chen L, Zeng D. Recent Advances in Structure Design and Application of Metal Halide Perovskite-Based Gas Sensor. ACS Sens 2024. [PMID: 39185676 DOI: 10.1021/acssensors.4c01199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/27/2024]
Abstract
Metal halide perovskites (MHPs) are emerging gas-sensing materials and have attracted considerable attention in gas sensors due to their unique bandgap structure and tunable optoelectronic properties. The past decade has witnessed significant developments in the gas-sensing field; however, their intrinsic structural instability and ambiguous gas-sensing mechanisms hamper their practical applications. Herein, we summarize the recent advances in MHP-based gas sensors. The physicochemical properties of MHPs are discussed at first. The structure design, including dimension design and engineering design, is overviewed as well as their fabrication methods, and we put forward our insights into the gas-sensing mechanism of MHPs. It is believed that enhanced understanding of gas-sensing mechanisms of MHPs are helpful for their application as gas-sensing materials, and structure design can enhance their stability, sensing sensitivity, and selectivity to target gases as gas sensors. Subsequently, the latest developments in MHP-based gas sensors are summarized according to their different application scenarios. Finally, we conclude with the current status and challenges in this field and propose future perspectives.
Collapse
Affiliation(s)
- Kechen Zhou
- State Key Laboratory of Materials Processing and Die Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology (HUST), No. 1037, Luoyu Road, Wuhan 430074, P. R. China
| | - Lu Tang
- State Key Laboratory of Materials Processing and Die Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology (HUST), No. 1037, Luoyu Road, Wuhan 430074, P. R. China
| | - Chaoqi Zhu
- State Key Laboratory of Materials Processing and Die Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology (HUST), No. 1037, Luoyu Road, Wuhan 430074, P. R. China
| | - Jiahong Tang
- State Key Laboratory of Materials Processing and Die Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology (HUST), No. 1037, Luoyu Road, Wuhan 430074, P. R. China
| | - Huiyu Su
- State Key Laboratory of Materials Processing and Die Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology (HUST), No. 1037, Luoyu Road, Wuhan 430074, P. R. China
| | - Lingfei Luo
- State Key Laboratory of Materials Processing and Die Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology (HUST), No. 1037, Luoyu Road, Wuhan 430074, P. R. China
| | - Liyan Chen
- State Key Laboratory of Materials Processing and Die Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology (HUST), No. 1037, Luoyu Road, Wuhan 430074, P. R. China
| | - Dawen Zeng
- State Key Laboratory of Materials Processing and Die Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology (HUST), No. 1037, Luoyu Road, Wuhan 430074, P. R. China
| |
Collapse
|
3
|
Zhang H, Sun W, Zhang J, Ma J. Vacuum-ultraviolet based advanced oxidation and reduction processes for water treatment. JOURNAL OF HAZARDOUS MATERIALS 2024; 471:134432. [PMID: 38691932 DOI: 10.1016/j.jhazmat.2024.134432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2024] [Revised: 04/02/2024] [Accepted: 04/24/2024] [Indexed: 05/03/2024]
Abstract
The use of vacuum-ultraviolet (VUV) photolysis in water treatment has been gaining significant interest due to its efficacy in degrading refractory organic contaminants and eliminating oxyanions. In recent years, the reactive species driving pollutant decomposition in VUV-based advanced oxidation and reduction processes (VUV-AOPs and VUV-ARPs) have been identified. This review aims to provide a concise overview of VUV photolysis and its advancements in water treatment. We begin with an introduction to VUV irradiation, followed by a summary of the primary reactive species in both VUV-AOPs and VUV-ARPs. We then explore the factors influencing VUV-photolysis in water treatment, including VUV irradiation dose, catalysts or activators, dissolved gases, water matrix components (e.g., DOM and inorganic anions), and solution pH. In VUV-AOPs, the predominant reactive species are hydroxyl radicals (˙OH), hydrogen peroxide (H2O2), and ozone (O3). Conversely, in VUV-ARPs, the main reactive species are the hydrated electron (eaq-) and hydrogen atom (˙H). It is worth noting that VUV-based advanced oxidation/reduction processes (VUV-AORPs) can transit between VUV-AOPs and VUV-ARPs based on the externally added chemicals and dissolved gases in the solution. Increase of the VUV irradiation dose and the concentration of catalysts/activators enhances the degradation of contaminants, whereas DOM and inorganic anions inhibit the reaction. The pH influences the redox potential of ˙OH, the speciation of contaminants and activators, and thus the overall performance of the VUV-AOPs. Conversely, an alkaline pH is favored in VUV-ARPs because eaq- predominates at higher pH.
Collapse
Affiliation(s)
- Honglong Zhang
- School of Environment, Harbin Institute of Technology, Harbin 150090, PR China; Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, PR China
| | - Wenjun Sun
- School of Environment, Tsinghua University, Beijing 100084, PR China
| | - Jing Zhang
- School of Environment, Harbin Institute of Technology, Harbin 150090, PR China.
| | - Jun Ma
- School of Environment, Harbin Institute of Technology, Harbin 150090, PR China
| |
Collapse
|
4
|
Xu M, Tian X, Lin Y, Xu Y, Tao J. Design and Performance Evaluation of a Deep Ultraviolet LED-Based Ozone Sensor for Semiconductor Industry Applications. MICROMACHINES 2024; 15:476. [PMID: 38675285 PMCID: PMC11052474 DOI: 10.3390/mi15040476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 03/24/2024] [Accepted: 03/29/2024] [Indexed: 04/28/2024]
Abstract
Ozone (O3) is a critical gas in various industrial applications, particularly in semiconductor manufacturing, where it is used for wafer cleaning and oxidation processes. Accurate and reliable detection of ozone concentration is essential for process control, ensuring product quality, and safeguarding workplace safety. By studying the UV absorption characteristics of O3 and combining the specific operational needs of semiconductor process gas analysis, a pressure-insensitive ozone gas sensor has been developed. In its optical structure, a straight-through design without corners was adopted, achieving a coupling efficiency of 52% in the gas chamber. This device can operate reliably in a temperature range from 0 °C to 50 °C, with only ±0.3% full-scale error across the entire temperature range. The sensor consists of a deep ultraviolet light-emitting diode in a narrow spectrum centered at 254 nm, a photodetector, and a gas chamber, with dimensions of 85 mm × 25 mm × 35 mm. The performance of the sensor has been meticulously evaluated through simulation and experimental analysis. The sensor's gas detection accuracy is 750 ppb, with a rapid response time (t90) of 7 s, and a limit of detection of 2.26 ppm. It has the potential to be applied in various fields for ozone monitoring, including the semiconductor industry, water treatment facilities, and environmental research.
Collapse
Affiliation(s)
- Maosen Xu
- College of Electrical Engineering and Automation, Shandong University of Science and Technology, Qingdao 266590, China;
- College of Electronic and Information Engineering, Shandong University of Science and Technology, Qingdao 266590, China
- School of Information Science and Engineering (ISE), Shandong University, Qingdao 266237, China;
| | - Xin Tian
- The Key Laboratory of Laser and Infrared System, Ministry of Education, Shandong University, Qingdao 266237, China;
| | - Yuzhe Lin
- School of Information Science and Engineering (ISE), Shandong University, Qingdao 266237, China;
| | - Yan Xu
- College of Electrical Engineering and Automation, Shandong University of Science and Technology, Qingdao 266590, China;
- College of Electronic and Information Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Jifang Tao
- School of Information Science and Engineering (ISE), Shandong University, Qingdao 266237, China;
- The Key Laboratory of Laser and Infrared System, Ministry of Education, Shandong University, Qingdao 266237, China;
| |
Collapse
|
5
|
Barreto D, Gelamo R, Mizaikoff B, Petruci JFS. Fabrication of Low-Cost Miniaturized Gas Cells via SLA 3D-Printing for UV-Based Gas Sensors. ACS OMEGA 2024; 9:8374-8380. [PMID: 38405469 PMCID: PMC10883014 DOI: 10.1021/acsomega.3c09317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 01/17/2024] [Accepted: 01/23/2024] [Indexed: 02/27/2024]
Abstract
The use of 3D-printing technology for producing optical devices (i.e., mirrors and waveguides) remains challenging, especially in the UV spectral regime. Gas sensors based on absorbance measurements in the UV region are suitable for determining numerous volatile species in a variety of samples and analytical scenarios. The performance of absorbance-based gas sensors is dependent on the ability of the gas cell to propagate radiation across the absorption path length and facilitate interaction between photons and analytes. In this technical note, we present a 3D-printed substrate-integrated hollow waveguide (iHWG) to be used as a miniaturized and ultralightweight gas cell used in UV gas-sensing schemes. The substrates were fabricated via UV stereolithography and polished, and the light-guiding channel was coated with aluminum for UV reflectivity. This procedure resulted in a surface roughness of 11.2 nm for the reflective coating, yielding a radiation attenuation of 2.25 W/cm2. The 3D-printed iHWG was coupled to a UV light source and a portable USB-connected spectrometer. The sensing device was applied for the quantification of isoprene and acetone, serving as a proof-of-concept study. Detection limits of 0.22 and 0.03% in air were obtained for acetone and isoprene, respectively, with a nearly instantaneous sensor response. The development of portable, low-cost, and ultralightweight UV optical sensors enables their use in a wide range of scenarios ranging from environmental monitoring to clinical/medical applications.
Collapse
Affiliation(s)
- Diandra
Nunes Barreto
- Institute
of Chemistry, Federal University of Uberlândia
(UFU), Uberlândia 38400-902, Minas Gerais, Brazil
| | - Rogério Gelamo
- Institute
of Technological and Exact Sciences, Federal
University of Triângulo Mineiro (UFTM), Uberaba 38025-440, Minas Gerais, Brazil
| | - Boris Mizaikoff
- Institute
of Analytical and Bioanalytical Chemistry, Ulm University, 89081 Ulm, Germany
- Hahn-Schickard, 89077 Ulm, Germany
| | | |
Collapse
|
6
|
Cerrato-Alvarez M, Frutos-Puerto S, Pinilla-Gil E. Use of Uncertainty Calculation Software as a Didactic Tool to Improve the Knowledge of Chemistry Students in Analytical Method Validation. JOURNAL OF CHEMICAL EDUCATION 2024; 101:104-112. [PMID: 38362137 PMCID: PMC10865931 DOI: 10.1021/acs.jchemed.3c00102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 11/28/2023] [Accepted: 12/01/2023] [Indexed: 02/17/2024]
Abstract
Calculating analytical uncertainties as a part of method validation is a relevant aspect of field and laboratory practices in instrumental analytical chemistry subjects, which usually require complex algorithms. This work describes the development and didactic use of an automatic and straightforward informatics tool, implemented in an Excel macro, for calculating and interpreting the uncertainty of an analytical method against a reference method on field measurements. The software was initially developed for field testing of low-cost air quality monitoring analytical methods against reference methods, and the present work shows its adaptation to a didactic environment. The uncertainty calculation software was implemented through an Excel macro based on Visual Basic as a graphical user interface. It finds a best-fit line that describes the relation between concentrations determined by the candidate and reference methods. The software generates the analytical validation results (slope and intercept with their respective confidence limits, and expanded uncertainty of a concentration determined by the candidate method), hiding the intermediate functions and calculations. The Excel interface eases uncertainty calculations for undergraduate students, although the background mathematics can be quickly unveiled to students for didactic purposes. This tool has been applied to a laboratory exercise focused on validating experimental results obtained in the measurement of ozone levels in ambient air by passive sampling and spectrophotometric detection. The uncertainty calculation software has proved valuable by providing the student a resource to check the analytical quality of the data generated in the laboratory, while assimilating the fundamentals behind the calculations.
Collapse
Affiliation(s)
- Maria Cerrato-Alvarez
- Departamento
de Química Analítica, Universidad
de Extremadura, Av. de Elvas s/n, 06006 Badajoz, Spain
| | - Samuel Frutos-Puerto
- Departamento
de Química Analítica, Universidad
de Extremadura, Av. de Elvas s/n, 06006 Badajoz, Spain
| | - Eduardo Pinilla-Gil
- Departamento
de Química Analítica, Universidad
de Extremadura, Av. de Elvas s/n, 06006 Badajoz, Spain
| |
Collapse
|
7
|
Pu S, Song H, Zhang L, Su Y, Liu R, Lv Y. Controllable Synthesis of Defective UiO-66 for Efficient Degradation and Detection of Ozone. ACS APPLIED MATERIALS & INTERFACES 2023; 15:49920-49930. [PMID: 37819026 DOI: 10.1021/acsami.3c13054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
Metal-organic framework (MOF) structures have gained significant attention for their exceptional catalytic performance in ozone degradation, even under high humidity conditions, which is attributed to the presence of unsaturated metal sites (MOF defects). However, the correlation between MOF defects and catalytic ozone remains ambiguous, and a general approach for the controllable synthesis of high-performance MOF structures is currently lacking. Herein, different defective UiO-66 materials with cluster or ligand defects were obtained by precisely controlling small molecular acid modulators. Their catalytic performance can be analyzed in real time through the specific cataluminescence (CTL) signal of ozone at the interface. The presence of ligand defects was found to be crucial for both catalytic degradation and luminescence of ozone, and the CTL signal exhibited a positive correlation with the endogenous hydroxyl group content in the material (R2 = 0.982), while external humidity further supplemented internal water molecules within the material. Furthermore, theoretical calculations were conducted to compare the adsorption behaviors of ozone on the defective UiO-66 under dry/wet conditions, leading to the proposal of two potential reaction pathways. Subsequently, UiO-66-DA with superior catalytic performance was employed to develop a highly efficient CTL sensor capable of accurately detecting ozone (LOD = 23.3 ppb). This study held significant value in elucidating the reaction site of ozone on MOFs and achieving optimal catalytic effects through the careful selection of modulators and humidity levels.
Collapse
Affiliation(s)
- Sirui Pu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Hongjie Song
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Lichun Zhang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Yingying Su
- Analytical & Testing Center, Sichuan University, Chengdu, Sichuan 610064, China
| | - Rui Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Yi Lv
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
- Analytical & Testing Center, Sichuan University, Chengdu, Sichuan 610064, China
| |
Collapse
|
8
|
Leal VG, Silva-Neto HA, da Silva SG, Coltro WKT, Petruci JFDS. AirQuality Lab-on-a-Drone: A Low-Cost 3D-Printed Analytical IoT Platform for Vertical Monitoring of Gaseous H 2S. Anal Chem 2023; 95:14350-14356. [PMID: 37672689 DOI: 10.1021/acs.analchem.3c02719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/08/2023]
Abstract
The measurement of gaseous compounds in the atmosphere is a multichallenging task due to their low concentration range, long and latitudinal concentration variations, and the presence of sample interferents. Herein, we present a quadcopter drone deployed with a fully integrated 3D-printed analytical laboratory for H2S monitoring. Also, the analytical system makes part of the Internet of Things approach. The analytical method applied was based on the reaction between fluorescein mercuric acetate and H2S that led to fluorescence quenching. A 5 V micropump at a constant airflow of 50 mL min-1 was employed to deliver constant air into a flask containing 800 μL of the reagent. The analytical signal was obtained using a light-emitting diode and a miniaturized digital light detector. The method enabled the detection of H2S in the range from 15 to 200 ppbv, with a reproducibility of 5% for a sampling time of 10 min and an limit of detection of 9 ppbv. All devices were controlled using an Arduino powered by a small power bank, and the results were transmitted to a smartphone via Bluetooth. The proposed device resulted in a weight of 300 g and an overall cost of ∼50 USD. The platform was used to monitor the concentration of H2S in different intervals next to a wastewater treatment plant at ground and vertical levels. The ability to perform all analytical steps in the same device, the low-energy requirements, the low weight, and the attachment of data transmission modules offer new possibilities for drone-based analytical systems for air pollution monitoring.
Collapse
Affiliation(s)
- Vanderli Garcia Leal
- Institute of Chemistry, Federal University of Uberlandia, 2121 João Naves de Ávila Avenue, Uberlândia 38400-902, Brazil
| | - Habdias A Silva-Neto
- Instituto de Química, Universidade Federal de Goiás, Goiânia 74690-900, Goiás, Brazil
- Departamento de Química, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais 31270-400, Brazil
| | - Sidnei Gonçalves da Silva
- Institute of Chemistry, Federal University of Uberlandia, 2121 João Naves de Ávila Avenue, Uberlândia 38400-902, Brazil
| | - Wendell Karlos Tomazelli Coltro
- Instituto de Química, Universidade Federal de Goiás, Goiânia 74690-900, Goiás, Brazil
- Instituto Nacional de Ciȇncia e Tecnologia de Bioanalítica, Campinas 13084-971, São Paulo, Brazil
| | | |
Collapse
|
9
|
Iqbal MM, Muhammad G, Hussain MA, Hanif H, Raza MA, Shafiq Z. Recent trends in ozone sensing technology. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023; 15:2798-2822. [PMID: 37287375 DOI: 10.1039/d3ay00334e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The harmful impact of ozone on humans and the environment makes the development of economical, accurate, and efficient ozone monitoring technologies necessary. Therefore, in the present review, we critically discuss developments in the methods for the synthesis of ozone sensing materials such as metal oxides (Ni, Co, Pd, In, Cu, Zn, Fe, Sn, W, Ti and Mo), carbon nanotubes, organic compounds, perovskites, and quartz. Additionally, the recent advancements and innovations in ozone technology will be discussed. In this review, we focus on assembling ozone-sensing devices and developing related wireless communication, data transferring, and analyzing technologies together with satellite, airborne, and ground-based novel ozone-sensing strategies for monitoring the atmosphere, urban areas, and working environments. Furthermore, the developments in ozone-monitoring miniaturized devices technology will be considered. The effects of different factors, such as spatial-temporal variation, humidity, and calibration, on ozone measurements will also be discussed. It is anticipated that this review will bridge the knowledge gaps among materials chemists, engineers, and industry.
Collapse
Affiliation(s)
| | - Gulzar Muhammad
- Department of Chemistry, Government College University Lahore, Lahore, Pakistan
| | | | - Hina Hanif
- Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
| | | | - Zahid Shafiq
- Institute of Chemical Sciences, BZ University, Multan, 60800, Pakistan.
| |
Collapse
|
10
|
Manna SK, Kuilya D, Adhikary A, Maiti A, Mondal S. A minireview of recent developments in ozone detection using optical chemodosimeters. Analyst 2023; 148:954-965. [PMID: 36757270 DOI: 10.1039/d2an01971j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The development of optical chemodosimeters for ozone detection has been an important research subject in recent years because of the environmental and biological relevance of ozone. The design and development of ozone chemodosimeters, as well as their numerous applications from 2009 to 2022, have all been thoroughly covered in this minireview. In this review, chemodosimeters are categorised according to their distinctive reaction mechanism with ozone. The comparative data for each of these chemodosimeters have also been provided here. We have also discussed the difficulties and potential prospects of this fast-evolving discipline. To the best of our knowledge, this is the first review that has comprehensively analysed the progress made in the development of ozone chemodosimeters.
Collapse
Affiliation(s)
- Saikat Kumar Manna
- Department of Chemistry, Haldia Government College, Debhog, Haldia, Purba Medinipur- 721657, West Bengal, India.
| | - Debajyoti Kuilya
- Department of Chemistry, Haldia Government College, Debhog, Haldia, Purba Medinipur- 721657, West Bengal, India.
| | - Ashok Adhikary
- Department of Chemistry, Haldia Government College, Debhog, Haldia, Purba Medinipur- 721657, West Bengal, India.
| | - Aindrila Maiti
- Department of Chemistry, Haldia Government College, Debhog, Haldia, Purba Medinipur- 721657, West Bengal, India.
| | - Sanchita Mondal
- Department of Chemistry, Sree Chaitanya College, Habra, North 24 Parganas, West Bengal-743268, India.
| |
Collapse
|
11
|
Bao N, Jiang S, Smith A, Schauer JJ, Mavrikakis M, Van Lehn RC, Zavala VM, Abbott NL. Sensing Gas Mixtures by Analyzing the Spatiotemporal Optical Responses of Liquid Crystals Using 3D Convolutional Neural Networks. ACS Sens 2022; 7:2545-2555. [PMID: 35998611 DOI: 10.1021/acssensors.2c00362] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
We report how analysis of the spatial and temporal optical responses of liquid crystal (LC) films to targeted gases, when performed using a machine learning methodology, can advance the sensing of gas mixtures and provide important insights into the physical processes that underlie the sensor response. We develop the methodology using O3 and Cl2 mixtures (representative of an important class of analytes) and LCs supported on metal perchlorate-decorated surfaces as a model system. Although O3 and Cl2 both diffuse through LC films and undergo redox reactions with the supporting metal perchlorate surfaces to generate similar initial and final optical states of the LCs, we show that a three-dimensional convolutional neural network can extract feature information that is encoded in the spatiotemporal color patterns of the LCs to detect the presence of both O3 and Cl2 species in mixtures and to quantify their concentrations. Our analysis reveals that O3 detection is driven by the transition time over which the brightness of the LC changes, while Cl2 detection is driven by color fluctuations that develop late in the optical response of the LC. We also show that we can detect the presence of Cl2 even when the concentration of O3 is orders of magnitude greater than the Cl2 concentration. The proposed methodology is generalizable to a wide range of analytes, reactive surfaces, and LCs and has the potential to advance the design of portable LC monitoring devices (e.g., wearable devices) for analyzing gas mixtures using spatiotemporal color fluctuations.
Collapse
Affiliation(s)
- Nanqi Bao
- Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Shengli Jiang
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Alexander Smith
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - James J Schauer
- Department of Civil and Environmental Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Manos Mavrikakis
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Reid C Van Lehn
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Victor M Zavala
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Nicholas L Abbott
- Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, New York 14853, United States
| |
Collapse
|