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Lu Z, Wang Z. Complete Photooxidation of Formaldehyde to CO 2 via Ni-Dual-Atom Decorated Crystalline Triazine Frameworks: A DFT Study. TOXICS 2024; 12:242. [PMID: 38668465 PMCID: PMC11054549 DOI: 10.3390/toxics12040242] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 03/22/2024] [Accepted: 03/23/2024] [Indexed: 04/29/2024]
Abstract
Formaldehyde (CH2O) emerges as a significant air pollutant, necessitating effective strategies for its oxidation to mitigate adverse impacts on human health and the environment. Among various technologies, the photooxidation of CH2O stands out owing to its affordability, safety, and effectiveness. Nitrogen-rich crystalline triazine-based organic frameworks (CTFs) exhibit considerable potential in this domain. Nevertheless, the weak and unstable CH2O adsorption hinders the overall oxidation efficiency of CTF. To address this limitation, we incorporate single and dual Ni atoms into nitrogen-rich CTFs by density functional theory (DFT) calculations, resulting in CTF-Ni and CTF-2Ni. This strategic modification significantly enhances the adsorption capability of CH2O. Notably, this synergy between Ni dual atoms activates CH2O by strong chemical adsorption, thereby reducing the energy barrier of CH2O oxidation and achieving the complete oxidation of CH2O to CO2. Moreover, the introduction of dual-atom Ni over CTF ameliorates visible and near-infrared light absorption and facilitates photoexcited charge transfer and separation. Finally, the underlying mechanisms of complete CH2O oxidation over CTF-2Ni are proposed. This work offers novel insights into the rational design of photocatalysts for CH2O oxidation through the integration of Ni dual atoms into CTFs.
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Affiliation(s)
- Zhao Lu
- HKUST Shenzhen-Hong Kong Collaborative Innovation Research Institute, Shenzhen 515100, China;
- Research and Development Center, Shenzhen Foundation Engineering Co., Ltd., Shenzhen 515100, China
| | - Zhongliao Wang
- Anhui Province Industrial Generic Technology Research Center for Alumics Materials, Anhui Province Key Laboratory of Pollutant Sensitive Materials and Environmental Remediation, School of Physics and Electronic Information, Huaibei Normal University, Huaibei 235000, China
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Moreira AJ, Lemos SG, Coelho D, Mascaro LH, Freschi GPG, Pereira EC. UV-Vis spectrophotometry coupled to chemometric analysis for the performance evaluation of atrazine photolysis and photocatalysis. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:24010-24023. [PMID: 34820752 DOI: 10.1007/s11356-021-17687-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 11/18/2021] [Indexed: 06/13/2023]
Abstract
In this study, a spectrophotometric-chemometric (Spec-Chem) approach was applied as an alternative to chromatography to monitor ATZ and by-products after photolytic and photocatalytic oxidation aiming to unveil the ATZ degradation mechanism. Spec-Chem is an accessible, easy-to-operate, low-cost analytical approach to monitor atrazine (ATZ) and by-products, and its applicability was validated by HPLC, the reference technique for the evaluation of pollutant degradation mechanisms. The chromatographic (DChro) and spectrophotometric (DSpec) data found 95% and 57% ATZ removal after 30 min, respectively, proving that the DSpec erroneously induces a 38% loss in removal efficiency. When DSpec was treated by multivariate curve resolution (MCR) analysis for providing chemometric data (DChem), it found ATZ removal and hydroxyatrazine (HAT) formation statistically equal to DChro (t-test, p = 0.05). After unraveling the ATZ degradation mechanism using Spec-Chem, a new hypothesis for the kinetic calculation of ATZ degradation was presented, where the concentrations of ATZ and HAT were used to find k and R2 values representative for the ATZ degradation mechanism. The values found for k were compatible with the literature under similar conditions of ATZ degradation, and the linear correlation coefficients (R2 = 0.99) showed an optimal fit for the proposed hypothesis. Thus, Spec-Chem was successfully applied to unravel the mechanism of photocatalytic degradation of ATZ in the presence of TiO2, while k was obtained by the new hypothesis proposed that considered ATZ and HAT concentration as parameters of kinetic interest. Therefore, the importance of monitoring quantitatively ATZ and HAT were provided in this study, providing new information for the scientific community.
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Affiliation(s)
- Ailton J Moreira
- Chemistry Department, Universidade Federal de São Carlos, São Carlos, SP, Brazil.
- Universidade Federal de Alfenas, Campus Poços de Caldas, Poços de Caldas, MG, Brazil.
| | - Sherlan G Lemos
- Department of Chemistry, Federal University of Paraíba, João Pessoa, PB, Brazil
| | - Dyovani Coelho
- Chemistry Department, Universidade Federal de São Carlos, São Carlos, SP, Brazil
| | - Lucia H Mascaro
- Chemistry Department, Universidade Federal de São Carlos, São Carlos, SP, Brazil
| | - Gian P G Freschi
- Universidade Federal de Alfenas, Campus Poços de Caldas, Poços de Caldas, MG, Brazil
| | - Ernesto C Pereira
- Chemistry Department, Universidade Federal de São Carlos, São Carlos, SP, Brazil
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Wang T, Wang H, Xia P, Xue S, Yang G, Li H, Li Z, Jiang X, Xing X. PVA-SM microstructure enhanced ratiometric fluorescence probe for formaldehyde detection in solution and gas. OPTICS LETTERS 2021; 46:5759-5762. [PMID: 34780455 DOI: 10.1364/ol.441296] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 10/23/2021] [Indexed: 06/13/2023]
Abstract
Formaldehyde (FA) is one of the most common pollutants, which has tremendous harm to humans and environment. In this work, 4-amino-3-pentene-2-one (Fluoral-p) and SiO2 coated quantum dot (QD@SiO2) were combined to implement a new ratiometric fluorescence probe QD@SiO2-Fluoral-p for FA detection. In addition, by utilization of polyvinyl alcohol (PVA) and SiO2 microsphere (SM), a kind of PVA-SM microstructure was assembled with QD@SiO2-Fluoral-p to composite a signal enhanced sensing film. The QD@SiO2-Fluoral-p exhibited good response to 0-400 mg/L FA solution and an enhancement around 15 folds was realized after introducing PVA-SM. In both situations, the probe showed linear relationship to FA concentration (CFA), with detection limits of 14 and 0.5 mg/L, respectively. Also, the sensing film showed a good linear response to FA gas in the range of 0 to 2 ppm, with a detection limit 0.03 ppm. As a result, the PVA-SM enhanced ratiometric fluorescence probe features high sensitivity, low detection limit, good selectivity, as well as portable, which can serve as a useful tool for investigating FA in solution and gas at room temperature.
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Xu D, Ge K, Chen Y, Qi S, Qiu J, Liu Q. Cable-Like Core-Shell Mesoporous SnO 2 Nanofibers by Single-Nozzle Electrospinning Phase Separation for Formaldehyde Sensing. Chemistry 2020; 26:9365-9370. [PMID: 32364617 DOI: 10.1002/chem.202000713] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 04/29/2020] [Indexed: 11/07/2022]
Abstract
In this study, we have developed a simple and efficient single-nozzle electrospinning strategy involving the phase separation of polystyrene and poly(vinylpyrrolidone) to construct cable-like core-shell mesoporous SnO2 nanofibers. Compared with traditional multi-axial electrospinning approaches to the synthesis of core-shell nanofibers, the single-nozzle electrospinning process requires no complex multi-axial electrospinning setups or post-treatments, just drying and annealing after electrospinning. The obtained SnO2 nanofibers show promise as a sensing material for formaldehyde at low concentrations, the detection limit being about 1 ppm. Furthermore, the nanofibers exhibited good cycling stability and selectivity, with response and recovery times toward 10 ppm formaldehyde being approximately 18 and 196 s, respectively, at an operating temperature of 195 °C.
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Affiliation(s)
- Dongpo Xu
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, P. R. China
| | - Kangjie Ge
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, P. R. China
| | - Yan Chen
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, P. R. China
| | - Shuyan Qi
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, P. R. China
| | - Jingxuan Qiu
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, P. R. China
| | - Qing Liu
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, P. R. China
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Bonora R, Boaretti C, Campea L, Roso M, Martucci A, Modesti M, Lorenzetti A. Combined AOPs for Formaldehyde Degradation Using Heterogeneous Nanostructured Catalysts. NANOMATERIALS 2020; 10:nano10010148. [PMID: 31947631 PMCID: PMC7023196 DOI: 10.3390/nano10010148] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 12/28/2019] [Accepted: 01/09/2020] [Indexed: 11/17/2022]
Abstract
In this paper we studied the combination of advanced oxidation processes (AOPs), i.e., TiO2-based photocatalysis and photo-Fenton process, on the degradation of aqueous solutions containing a low (90 ppm) concentration of formaldehyde. Heterogeneous nanostructured catalysts, supported on polymeric nanofibers, were used; for comparison, some homogeneous or partly heterogeneous systems were also analyzed. Furthermore, to make the process more sustainable (in terms of costs and safety) no hydrogen peroxide was added to the system. The results showed that the combination of AOPs gave a synergy since the presence of iron was beneficial in promoting the photocatalytic activity of TiO2 while TiO2 was beneficial in promoting the photo-Fenton reaction. Moreover, very good results were obtained using fully heterogeneous nanostructured catalysts (based on TiO2 and FeSO4), without the need to add H2O2.
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Sun X, Zhang H, Hao S, Zhai J, Dong S. A Self-Powered Biosensor with a Flake Electrochromic Display for Electrochemical and Colorimetric Formaldehyde Detection. ACS Sens 2019; 4:2631-2637. [PMID: 31441298 DOI: 10.1021/acssensors.9b00917] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The formaldehyde biosensors with the features of cost effectiveness, high specificity, easy operation, and simplicity are urgently desired in routing and field detection of formaldehyde. Here, we report a new design of an enzymatic self-powered biosensor (ESPB) toward formaldehyde detection. The ESPB involves a formaldehyde dehydrogenase/poly-methylene green/buckypaper bioanode as the sensing electrode and a Prussian blue/Au nanoparticles/carbon fiber paper cathode as the electrochromic display. Formaldehyde acts as the fuel to drive the ESPB, relying on that the concentration of formaldehyde can be determined with the ESPB by both directly measuring the variance in short circuit current and observing the color change of the cathode. By measuring the variance in short circuit current, a linear detection range from 0.01 to 0.35 mM and a calculated detection limit of 0.006 mM are obtained, comparable to or better than those reported before. The color change of the cathode can be distinguished easily and exactly via the naked eye after immersing the ESPB in formaldehyde solution for 90 s with the concentration up to 0.35 mM, covering the permissive level of formaldehyde in some standards associated with environmental quality control. Specially, the formaldehyde concentration can be precisely quantified by analyzing the color change of the cathode digitally using the equation of B/(R + G + B). In the following test of real spiked samples of tap water and lake water, the recovery ratios of formaldehyde with the concentrations from 0.010 to 0.045 mM are tested to be between 95 and 100% by both measuring the variance in short circuit current and analyzing the color change of the cathode digitally. In addition, the ESPB exhibits negligible interference from acetaldehyde and ethanol and can be stored at 4 °C for 21 days with a loss of less than 8% in its initial value of short circuit current. Therefore, the ESPB with the capability of working like disposable test paper can be expected as a sensitive, simple, rapid, cost-effective colorimetric method with high selectivity in routing and field formaldehyde detection.
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Affiliation(s)
- Xiaoxuan Sun
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of Science and Technology of China, Hefei 230026, China
| | - He Zhang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of Science and Technology of China, Hefei 230026, China
| | - Shuai Hao
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of Science and Technology of China, Hefei 230026, China
| | - Junfeng Zhai
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Shaojun Dong
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of Science and Technology of China, Hefei 230026, China
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Abbas N, Shao GN, Haider MS, Imran S, Park SS, Kim HT. Sol–gel synthesis of TiO 2 -Fe 2 O 3 systems: Effects of Fe 2 O 3 content and their photocatalytic properties. J IND ENG CHEM 2016. [DOI: 10.1016/j.jiec.2016.05.015] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Bai B, Qiao Q, Li J, Hao J. Progress in research on catalysts for catalytic oxidation of formaldehyde. CHINESE JOURNAL OF CATALYSIS 2016. [DOI: 10.1016/s1872-2067(15)61007-5] [Citation(s) in RCA: 143] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Kumar A, Guo C, Sharma G, Pathania D, Naushad M, Kalia S, Dhiman P. Magnetically recoverable ZrO2/Fe3O4/chitosan nanomaterials for enhanced sunlight driven photoreduction of carcinogenic Cr(vi) and dechlorination & mineralization of 4-chlorophenol from simulated waste water. RSC Adv 2016. [DOI: 10.1039/c5ra23372k] [Citation(s) in RCA: 102] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
In this laboratory-scale experiment we report the treatment of carcinogenic Cr(vi) and 4-chlorophenol by ferromagnetic ZrO2/Fe3O4 nano-heterojunctions supported on chitosan.
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Affiliation(s)
- Amit Kumar
- School of Chemistry
- Shoolini University
- Solan, India
| | - Changsheng Guo
- State Key Laboratory of Environmental Criteria and Risk Assessment
- Chinese Research Academy of Environmental Sciences
- Beijing, China
| | | | | | - Mu Naushad
- Department of Chemistry
- College of Science
- King Saud University
- Riyadh, Saudi Arabia
| | - Susheel Kalia
- Department of Chemistry
- Army Cadet College Wing
- Indian Military Academy
- Dehradun – 248007, India
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