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Constructing NaYF4: Yb, Tm@NH2-MIL-125(Ti) with up-conversion photoluminescence for enhanced full-spectrum photocatalytic performance. RESEARCH ON CHEMICAL INTERMEDIATES 2023. [DOI: 10.1007/s11164-023-04974-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
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Bamiduro GJ, Kumar N, Solo-Gabriele HM, Zahran EM. Persistence of aerially-sprayed naled in coastal sediments. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 794:148701. [PMID: 34323772 DOI: 10.1016/j.scitotenv.2021.148701] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 06/21/2021] [Accepted: 06/22/2021] [Indexed: 06/13/2023]
Abstract
Aerial sprays of the organophosphate pesticide, naled, were intensified over beach areas during the summer of 2016 to control the locally-acquired Zika outbreak in the continental U.S. Concerns were raised in beach frequented areas about contaminated sediments. The aim of this study was to evaluate the persistence and levels of naled and its byproduct, dichlorvos, in sediments obtained from the affected areas. Laboratory experiments were designed to simulate the effect of various natural conditions on the decomposition of naled in three sediment types (beach sand, marl, and calcinated beach sand). The three sediment samples were also exposed to field aerial sprays. After 30 min of exposure, more dichlorvos was detected in the sediments than naled, with 33 to 43% of the molar concentration initially applied as either naled or dichlorvos. Under dark conditions, trace levels of naled were observed after 24 h on sediments. Higher temperature accelerated the natural decomposition of both naled and dichlorvos in sediments. The half-life of naled ranged from 3 to 5 h at 22.5 °C and ranged from 1 to 3 h at 30 °C. Expedited decomposition of naled was observed under sunlight conditions with a half-life of naled of 20 min. In the field, only dichlorvos was detected in the sediment samples at concentrations between 0.0011 and 0.0028 μmol/g 1 h after aerial sprays. This data can be used towards a risk assessment that evaluates exposures to naled and dichlorvos through beach sands impacted by aerial spray activities.
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Affiliation(s)
- Gbemisola J Bamiduro
- Department of Chemistry, Ball State University, Muncie, IN, 47306, United States of America
| | - Naresh Kumar
- Department of Public Health Sciences, University of Miami, Miami, FL, United States of America
| | - Helena M Solo-Gabriele
- Department of Civil, Architectural and Environmental Engineering, University of Miami, Coral Gables, FL, United States of America
| | - Elsayed M Zahran
- Department of Chemistry, Ball State University, Muncie, IN, 47306, United States of America.
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Nam D, Kim Y, Kim M, Nam J, Kim S, Jin E, Lee CY, Choe W. Role of Zr 6 Metal Nodes in Zr-Based Metal-Organic Frameworks for Catalytic Detoxification of Pesticides. Inorg Chem 2021; 60:10249-10256. [PMID: 34037384 DOI: 10.1021/acs.inorgchem.1c00653] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Pesticides are chemicals widely used for agricultural industry, despite their negative impact on health and environment. Although various methods have been developed for pesticide degradation to remedy such adverse effects, conventional materials often take hours to days for complete decomposition and are difficult to recycle. Here, we demonstrate the rapid degradation of organophosphate pesticides with a Zr-based metal-organic framework (MOF), showing complete degradation within 15 min. MOFs with different active site structures (Zr node connectivity and geometry) were compared, and a porphyrin-based MOF with six-connected Zr nodes showed remarkable degradation efficiency with half-lives of a few minutes. Such a high efficiency was further confirmed in a simple flow system for several cycles. This study reveals that MOFs can be highly potent heterogeneous catalysts for organophosphate pesticide degradation, suggesting that coordination geometry of the Zr node significantly influences the catalytic activity.
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Affiliation(s)
- Dongsik Nam
- Department of Chemistry, Ulsan National Institute of Science and Technology, 50 UNIST-gil, Ulsan 44919, Republic of Korea
| | - Yeongjin Kim
- Department of Chemistry, Ulsan National Institute of Science and Technology, 50 UNIST-gil, Ulsan 44919, Republic of Korea
| | - Miyeon Kim
- Department of Energy and Chemical Engineering/Innovation Center for Chemical Engineering, Incheon National University, Yeonsu-gu, Incheon 22012, Republic of Korea
| | - Joohan Nam
- Department of Chemistry, Ulsan National Institute of Science and Technology, 50 UNIST-gil, Ulsan 44919, Republic of Korea
| | - Seonghoon Kim
- Department of Chemistry, Ulsan National Institute of Science and Technology, 50 UNIST-gil, Ulsan 44919, Republic of Korea
| | - Eunji Jin
- Department of Chemistry, Ulsan National Institute of Science and Technology, 50 UNIST-gil, Ulsan 44919, Republic of Korea
| | - Chang Yeon Lee
- Department of Energy and Chemical Engineering/Innovation Center for Chemical Engineering, Incheon National University, Yeonsu-gu, Incheon 22012, Republic of Korea
| | - Wonyoung Choe
- Department of Chemistry, Ulsan National Institute of Science and Technology, 50 UNIST-gil, Ulsan 44919, Republic of Korea
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Recent Strategies for Environmental Remediation of Organochlorine Pesticides. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10186286] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The amount of organochlorine pesticides in soil and water continues to increase; their presence has surpassed maximum acceptable concentrations. Thus, the development of different removal strategies has stimulated a new research drive in environmental remediation. Different techniques such as adsorption, bioremediation, phytoremediation and ozonation have been explored. These techniques aim at either degrading or removal of the organochlorine pesticides from the environment but have different drawbacks. Heterogeneous photocatalysis is a relatively new technique that has become popular due to its ability to completely degrade different toxic pollutants—instead of transferring them from one medium to another. The process is driven by a renewable energy source, and semiconductor nanomaterials are used to construct the light energy harvesting assemblies due to their rich surface states, large surface areas and different morphologies compared to their corresponding bulk materials. These make it a green alternative that is cost-effective for organochlorine pesticides degradation. This has also opened up new ways to utilize semiconductors and solar energy for environmental remediation. Herein, the focus of this review is on environmental remediation of organochlorine pesticides, the different techniques of their removal from the environment, the advantages and disadvantages of the different techniques and the use of specific semiconductors as photocatalysts.
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Kanan S, Moyet MA, Arthur RB, Patterson HH. Recent advances on TiO2-based photocatalysts toward the degradation of pesticides and major organic pollutants from water bodies. CATALYSIS REVIEWS-SCIENCE AND ENGINEERING 2019. [DOI: 10.1080/01614940.2019.1613323] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Sofian Kanan
- Department of Biology, Chemistry & Environmental Sciences, American University of Sharjah, Sharjah, United Arab Emirates
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Li J, Wang Y, Tian Y, He X, Yang P, Yuan M, Cao Y, Lyu J. Crystallization of microporous TiO 2 through photochemical deposition of Pt for photocatalytic degradation of volatile organic compounds. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:15662-15670. [PMID: 29574642 DOI: 10.1007/s11356-018-1767-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2017] [Accepted: 03/13/2018] [Indexed: 06/08/2023]
Abstract
The photocatalytic mineralization efficiency of volatile organic compounds (VOCs) is determined by adsorption of reactants, separation of charge carriers, and reaction activity of catalyst surface. Herein, we provide a strategy to synthesize a novel catalyst, namely, PhPt-Micro, which is characterized by high adsorption ability, charge separation efficiency, and surface reaction activity. Toluene was chosen as the model VOC. The effects of photochemical deposition of Pt on the physical properties of microporous amorphous TiO2 (Micro) and toluene mineralization were studied using N2 adsorption/desorption, transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, GC-flame ionization detection, and surface photovoltage spectroscopy (SPS) analyses. After photochemical treatment, the structure of Micro was optimized, and Pt nanoparticles were successfully deposited at the outlet of electrons on the catalyst surface. SPS result proved that the optimized structure enhanced the separation efficiency of charge carriers and the migration of photo-generated electrons to the PhPt-Micro surface. The quasi-equilibrium adsorption amount of toluene over PhPt-Micro was two times higher than that with commercial nano TiO2 (P25). The micropores concentrated toluene on the catalyst surface and hindered intermediate desorption. The mineralization efficiency of toluene over PhPt-Micro was 2.4 and 5.9 times higher than those over Micro and P25, respectively.
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Affiliation(s)
- Ji Li
- School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, Jiangsu, China
- Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangnan University, Wuxi, 214122, Jiangsu, China
| | - Yanhong Wang
- School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, Jiangsu, China
| | - Yiyuan Tian
- School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, Jiangsu, China
| | - Xuan He
- School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, Jiangsu, China
| | - Pingping Yang
- School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, Jiangsu, China
| | - Minghui Yuan
- School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, Jiangsu, China
| | - Yuqing Cao
- School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, Jiangsu, China
| | - Jinze Lyu
- School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, Jiangsu, China.
- Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangnan University, Wuxi, 214122, Jiangsu, China.
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TD-M06-2X insights into the absorption and emission spectra of dichlorvos and its molecularly imprinted recognition by methacrylic acid. J Mol Model 2016; 22:282. [PMID: 27796784 DOI: 10.1007/s00894-016-3151-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Accepted: 10/13/2016] [Indexed: 10/20/2022]
Abstract
The absorption and emission spectra of dichlorvos and the dichlorvos-MAA complex in methanol, water, and chloroform in the molecularly imprinted recognition were investigated systematically. The M06-2X results revealed that: 1) the hydroxyl groups in polar solvents such as methanol and water may markedly influence the weak interactions, and then alter the adsorption and emission spectra; 2) the electronic excitation in absorption spectra of dichlorvos is dominated by the configuration HOMO → LUMO, but in the most stable dichlorvos-MAA it becomes the ππ* excitation of HOMO → LUMO + 1; 3) Mulliken charges reveal that dichlorvos almost dissociates to Cl- and a cation in its S1 excitation state; 4) the phosphorescence spectra of dichlorvos-MAA are relatively weak. Graphical Abstract The absorption and emission spectra of dichlorvos and the dichlorvos-MAA complex in the molecularly imprinted recognition of dichlorvos were investigated systematically in methanol, water, and chloroform as solvents.
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Reddy PVL, Kim KH. A review of photochemical approaches for the treatment of a wide range of pesticides. JOURNAL OF HAZARDOUS MATERIALS 2015; 285:325-335. [PMID: 25528231 DOI: 10.1016/j.jhazmat.2014.11.036] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Revised: 11/04/2014] [Accepted: 11/26/2014] [Indexed: 06/04/2023]
Abstract
Pesticides are renowned as some of the most pernicious chemicals known to humankind. Nine out of twelve most hazardous and persistent organic chemicals on planet have been identified as pesticides and their derivatives. Because of their strong recalcitrant nature, it often becomes a difficult task to treat them by conventional approaches. It is well perceived that many factors can interfere with the degradation of pesticides under ambient conditions, e.g., media, light intensity, humic content, and other biological components. However, for the effective treatment of pesticides, photochemical methods are viewed as having clear and perceivable advantages. In this article, we provide a review of the fundamental characteristics of photochemical approaches for pesticide treatment and the factors governing their capacity and potential in such a process.
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Affiliation(s)
- P Venkata Laxma Reddy
- Environmental Science and Engineering, University of Texas Elpaso, Elpaso, TX 79902, USA; Indian Institute of Chemical Technology, Tarnaka, Hyderabad, Andhra Pradesh 50003, India
| | - Ki-Hyun Kim
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seongdong-gu, Seoul 133-791, South Korea.
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Considerations to improve adsorption and photocatalysis of low concentration air pollutants on TiO2. Catal Today 2014. [DOI: 10.1016/j.cattod.2013.10.089] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Dang X, Zhang X, Dong X, Ruan W, Ma H, Xue M. The p–n heterojunction with porous BiVO4 framework and well-distributed Co3O4 as a super visible-light-driven photocatalyst. RSC Adv 2014. [DOI: 10.1039/c4ra11417e] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The p–n heterojunction with mesoporous BiVO4 framework well-distributed Co3O4 is fabricated.
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Affiliation(s)
- Xueming Dang
- School of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian, China
| | - Xiufang Zhang
- School of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian, China
| | - Xiaoli Dong
- School of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian, China
| | - Wenqi Ruan
- School of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian, China
| | - Hongchao Ma
- School of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian, China
| | - Mang Xue
- School of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian, China
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Nabid MR, Sedghi R, Gholami S, Oskooie HA, Heravi MM. Preparation of New Magnetic Nanocatalysts Based on TiO2and ZnO and Their Application in Improved Photocatalytic Degradation of Dye Pollutant Under Visible Light. Photochem Photobiol 2012; 89:24-32. [DOI: 10.1111/j.1751-1097.2012.01209.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2012] [Accepted: 07/16/2012] [Indexed: 11/29/2022]
Affiliation(s)
| | | | - Saeede Gholami
- Department of Chemistry; Shahid Beheshti University; Tehran; Iran
| | - Hossein Abdi Oskooie
- Department of Chemistry; School of Science; Azzahra University; Vanak; Tehran; Iran
| | - Majid M. Heravi
- Department of Chemistry; School of Science; Azzahra University; Vanak; Tehran; Iran
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Calvino-Casilda V, López-Peinado AJ, Durán-Valle CJ, Martín-Aranda RM. Last Decade of Research on Activated Carbons as Catalytic Support in Chemical Processes. CATALYSIS REVIEWS-SCIENCE AND ENGINEERING 2010. [DOI: 10.1080/01614940.2010.498748] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Chen C, Cai W, Long M, Zhang J, Zhou B, Wu Y, Wu D. Template-free sol-gel preparation and characterization of free-standing visible light responsive C,N-modified porous monolithic TiO2. JOURNAL OF HAZARDOUS MATERIALS 2010; 178:560-565. [PMID: 20171008 DOI: 10.1016/j.jhazmat.2010.01.121] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2009] [Revised: 12/18/2009] [Accepted: 01/25/2010] [Indexed: 05/28/2023]
Abstract
Visible light responsive C,N-modified porous monolithic titania (MT(f)) has been successfully synthesized. The template-free sol-gel synthesis method accompanied by phase separation and in situ C,N-modification has been used. The molar ratio of water to tetrabutyl titanate (f) in starting solution plays an important role in the porous structure and photoactivity of MT(f). Scanning electron microscopy (SEM) analysis and N(2) adsorption-desorption analysis show that MT(f) possess mesoporous structure as well as macroporous structure. MT(22) has been further characterized by using X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and UV-vis diffuse reflectance spectra (DRS). The results show that both nitrogen and carbon elements exist in MT(22) and result in the visible light photocatalytic activity of MT(22). The observed reaction rate of decolorization of methyl orange is 0.0026 min(-1).
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Affiliation(s)
- Chao Chen
- Department of Environmental Science and Engineering, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
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Oncescu T, Stefan MI, Oancea P. Photocatalytic degradation of dichlorvos in aqueous TiO2 suspensions. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2010; 17:1158-1166. [PMID: 20143169 DOI: 10.1007/s11356-009-0292-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2009] [Accepted: 12/30/2009] [Indexed: 05/28/2023]
Abstract
INTRODUCTION In the present work, we explored the kinetics of dichlorvos (2,2-dichlorvinyl dimethyl phosphate, DDVP) decay through UV-A light-induced TiO(2) photocatalysis at pH 4 and 9, and the formation of degradation intermediates and final products under specific experimental conditions. Experimental observations and theoretical considerations allowed us to suggest the degradation mechanism of DDVP by the UV/TiO(2) process in aqueous solution. METHODS The irradiation experiments were carried out in a photoreactor using a 228-W medium-pressure Hg vapor lamp. The concentration of DDVP, phosphate ion and formaldehyde as reaction intermediate, are determined spectrophotometrically. Chloride ion concentration was measured potentiometrically. RESULTS The photocatalytic degradation rate of dichlorvos (DDVP) under UV irradiation (360-380 nm) was optimized with respect to the flow rate of O(2) gas sparged into the solution and photocatalyst concentration for a constant dichlorvos concentration (1.66 x 10(-4) M) at pH 4. Kinetic data were obtained at pH 4 and pH 9 for dichlorvos and the inorganic species released through its photo-induced degradation. The proposed mechanism which assumes the formation of some toxic intermediates resistant to mineralization is supported by theoretical calculations and the observed inorganic mass balances. CONCLUSIONS The calculated pseudo-first-order rate constants were dependent on the dissolved oxygen level at low O(2) flow rate, but somewhat independent on the initial pH. The decrease of pH during the irradiation suggests the formation of organic acids. The presence of organic intermediates was confirmed also by TOC measurements. A plausible reaction mechanism of DDVP degradation through the UV-A/TiO(2) process was proposed.
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Affiliation(s)
- Tatiana Oncescu
- Department of Physical Chemistry, University of Bucharest, Bd. Regina Elisabeta, no. 4-12, 030018, Bucharest, Romania.
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