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Cao J, Zhang Z, Wang S, Sun Z, Li J, Wang Y, Xu X, Ye Z, Zhang H. Magnetic Field Assisted Enhanced Sensitivity of Nonferromagnetic Materials Boosting the Carrier Transfer: Mechanistic Studies. ACS Sens 2024; 9:4777-4787. [PMID: 39254107 DOI: 10.1021/acssensors.4c01170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/11/2024]
Abstract
The performance of semiconductor sensors is determined by reaction kinetics, conductivity, and electron mobility, which are undoubtedly closely related to the electron motion behavior. Therefore, the effective regulation of electronic states is crucial for improving gas sensing properties. Previous methods of enhancing the gas-sensing performance have induced complex material modifications, and the extent of performance improvement is usually very limited. Further optimization of the gas sensing performance requires continuous efforts to advance new technologies. Toward this issue, a novel magnetic field-induced strategy is adopted to boost the carrier transfer efficiency of nonferromagnetic semiconductors. The gas sensing investigation results manifest that the applied magnetic field can effectively enhance the sensitivity and reduce the baseline resistance. The In2O3 NC-2 (In2O3 nanocubes) with an applied magnetic field have a greatly enhanced response of 161.4 toward 100 ppm formaldehyde, which is 2.5 times higher than that without magnetic field. The enhanced gas sensing properties can be mainly attributed to magnetization of reactive materials, which makes the orientation of electronic magnetic moments consistent, thus greatly contributing to reactivity. This work introduces a practical approach to effectively improve gas sensing performance without further morphology optimization, noble metal catalysis, structural modification, and material cladding. The results of this study provide new insights for designing novel gas sensors to improve the gas sensing performance.
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Affiliation(s)
- Jing Cao
- School of Physical Science and Technology, Tiangong University, Tianjin 300387, People's Republic of China
| | - Zixuan Zhang
- School of Physical Science and Technology, Tiangong University, Tianjin 300387, People's Republic of China
| | - Shuangming Wang
- College of Physics & Materials Science, Tianjin Normal University, Tianjin 300387, People's Republic of China
| | - Zhiying Sun
- School of Physical Science and Technology, Tiangong University, Tianjin 300387, People's Republic of China
| | - Jiahao Li
- School of Physical Science and Technology, Tiangong University, Tianjin 300387, People's Republic of China
| | - Yao Wang
- School of Physical Science and Technology, Tiangong University, Tianjin 300387, People's Republic of China
| | - Xiaoxue Xu
- School of Physical Science and Technology, Tiangong University, Tianjin 300387, People's Republic of China
| | - Zhixu Ye
- School of Physical Science and Technology, Tiangong University, Tianjin 300387, People's Republic of China
| | - Haiming Zhang
- School of Physical Science and Technology, Tiangong University, Tianjin 300387, People's Republic of China
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Winstanley YE, Gonzalez MB, Andreas E, Connaughton H, Bergen J, Ween M, Russell DL, Shearer CJ, Robertson SA, Robker RL. Drinking water quality impacts oocyte viability and embryo development. FRONTIERS IN REPRODUCTIVE HEALTH 2024; 6:1394099. [PMID: 39166174 PMCID: PMC11333305 DOI: 10.3389/frph.2024.1394099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Accepted: 07/23/2024] [Indexed: 08/22/2024] Open
Abstract
Normal reproductive function and fertility is considered a "sixth vital sign" because disruptions to this sensitive physiological system can forewarn other health issues, including exposure to environmental toxicants. We found that female mice exhibited profound loss of embryos during pre-implantation and fetal development coincident with a change to the source of their drinking water. When female mice were provided with tap water from the building in which they were housed (Water 2), instead of tap water from a neighboring building which was their previous supply (Water 1), ovulated oocytes were degenerated or had impaired meiotic maturation, and failed to form embryos. The harmful effects of Water 2 exposure were not reversible even following a recovery period; however, carbon-filtration of Water 2 removed the toxic contaminant. Water composition analysis to identify the responsible toxicant(s) found that trace elements were present at expected levels and phthalates were undetectable. Per- and Poly-fluoroalkyl Substances (PFAS), a family of persistent organic pollutants were detected at ∼4 ng/L. To investigate further, female mice were given drinking water categorized by level of PFAS contamination (0.6 ng/L, 2.8 ng/L, or 4.4 ng/L) for 9 weeks. Compared to mice consuming purified MilliQ water, mice consuming PFAS-contaminated water had decreased oocyte quality, impaired embryogenesis and reduced cell numbers in blastocysts. PFAS concentration in the drinking water was negatively correlated with oocyte viability. Importantly, the levels of PFAS detected in the tap water are within current "safe level" guidelines, and further research is needed to determine whether PFAS are responsible for the observed reproductive toxicity. However, this research demonstrating that water deemed suitable for human consumption has detrimental effects on mammalian embryo development has important implications for public health and water quality policies.
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Affiliation(s)
- Yasmyn E. Winstanley
- Robinson Research Institute, School of Biomedicine, The University of Adelaide, Adelaide, SA, Australia
| | - Macarena B. Gonzalez
- Robinson Research Institute, School of Biomedicine, The University of Adelaide, Adelaide, SA, Australia
| | - Eryk Andreas
- Robinson Research Institute, School of Biomedicine, The University of Adelaide, Adelaide, SA, Australia
| | - Haley Connaughton
- Robinson Research Institute, School of Biomedicine, The University of Adelaide, Adelaide, SA, Australia
| | - Jean Bergen
- Robinson Research Institute, School of Biomedicine, The University of Adelaide, Adelaide, SA, Australia
| | - Miranda Ween
- Department of Thoracic Medicine, Royal Adelaide Hospital, Adelaide, SA, Australia
- School of Medicine, The University of Adelaide, Adelaide, SA, Australia
| | - Darryl L. Russell
- Robinson Research Institute, School of Biomedicine, The University of Adelaide, Adelaide, SA, Australia
| | - Cameron J. Shearer
- School of Physics, Chemistry and Earth Sciences, The University of Adelaide, Adelaide, SA, Australia
| | - Sarah A. Robertson
- Robinson Research Institute, School of Biomedicine, The University of Adelaide, Adelaide, SA, Australia
| | - Rebecca L. Robker
- Robinson Research Institute, School of Biomedicine, The University of Adelaide, Adelaide, SA, Australia
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3
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Elia EA, Stylianou M, Agapiou A. Investigation on the source of VOCs emission from indoor construction materials using electronic sensors and TD-GC-MS. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 348:123765. [PMID: 38503351 DOI: 10.1016/j.envpol.2024.123765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 02/21/2024] [Accepted: 03/09/2024] [Indexed: 03/21/2024]
Abstract
Indoor air quality (IAQ) is critical to the health and wellbeing of people. As the majority of people spend greater amounts of time indoors, either in office spaces or households, the level of air pollutants in such environments is critical. Building materials and furniture are known sources of air pollutants such as Volatile Organic Compounds (VOCs) and may be associated with discomfort, detrimental health of the occupants, etc. In this study, the VOCs found in a brand new office complex were monitored over a period of 6 months, with an emphasis on monitoring and quantifying harmful VOCs and identifying their emission source. Air samples were taken from a closed, unoccupied office space on a weekly basis and analysed using Thermal Desorption-Gas Chromatography-Mass Spectrometry (TD-GC-MS), while continuous monitoring of the air quality was performed using two commercially available IAQ sensors. To identify the source of the emitted VOCs, pieces of all construction material that were used in the office, including flooring, finished wall material, and adhesive glues, were removed, and placed in air-tight glass containers prior to analysis confirming that the source of VOCs is indeed the flooring. Identified compounds included mainly material origin VOCs such as BTEX (benzene, toluene, ethylbenzene, xylene) and styrene, but also common VOCs such as acetone and propan-2-ol. Of significant importance was the concentration of toluene that was found to be the most abundant VOC in both the flooring material and the indoor air.
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Affiliation(s)
- E A Elia
- Department of Chemistry, University of Cyprus, P.O. Box 20537, Nicosia, 1678, Cyprus.
| | - M Stylianou
- Laboratory of Chemical Engineering and Engineering Sustainability, Faculty of Pure and Applied Sciences, Open University of Cyprus, Giannou Kranidioti 89, Nicosia, 2231, Cyprus.
| | - A Agapiou
- Department of Chemistry, University of Cyprus, P.O. Box 20537, Nicosia, 1678, Cyprus.
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Fernandes RA, Ferreira N, Lopes S, Santos J, Bento Pereira N, Ferreira NO, Nunes L, Martins JM, Carvalho LH. Development of an Innovative Lightweight Composite Material with Thermal Insulation Properties Based on Cardoon and Polyurethane. Polymers (Basel) 2023; 16:137. [PMID: 38201802 PMCID: PMC10780395 DOI: 10.3390/polym16010137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 12/22/2023] [Accepted: 12/29/2023] [Indexed: 01/12/2024] Open
Abstract
The search for innovative and sustainable solutions to improve the energy efficiency of the construction industry has been a hot topic for researchers due to the tremendous impact of insulator materials in the thermal comfort of buildings. In the present work, an innovative lightweight composite material with thermal insulation properties was developed, for the first time, by using cardoon particles and polyurethane. The formulation of the composite material was optimized in terms of cardoon fraction and the polyol/isocyanate ratio, to achieve the best compromise between internal bond (IB) strength and thickness swelling (TS). The best performing composite was PU75-CP45, with 45 wt% of cardoon particles and 75% of isocyanate, achieving an IB of 0.41 MPa and a TS of 5.3%. Regarding insulation properties, the PU75-CP45 composite material exhibits a promising performance when compared to conventional construction industry materials by tuning its thickness. Additionally, the composite material presented very low emissions of volatile organic compounds and formaldehyde (bellow to legislation levels) and high resistance to biological degradation.
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Affiliation(s)
- Raquel A. Fernandes
- ARCP Colab—Rede de Competências em Polímeros, Rua Júlio de Matos, 828/882, 4200-355 Porto, Portugal; (R.A.F.); (N.F.); (S.L.); (J.S.)
- LEPABE—Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal;
- AliCE—Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Nuno Ferreira
- ARCP Colab—Rede de Competências em Polímeros, Rua Júlio de Matos, 828/882, 4200-355 Porto, Portugal; (R.A.F.); (N.F.); (S.L.); (J.S.)
| | - Sandro Lopes
- ARCP Colab—Rede de Competências em Polímeros, Rua Júlio de Matos, 828/882, 4200-355 Porto, Portugal; (R.A.F.); (N.F.); (S.L.); (J.S.)
| | - Jorge Santos
- ARCP Colab—Rede de Competências em Polímeros, Rua Júlio de Matos, 828/882, 4200-355 Porto, Portugal; (R.A.F.); (N.F.); (S.L.); (J.S.)
- LEPABE—Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal;
- AliCE—Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Nelson Bento Pereira
- CICon—Center for Innovation in Construction, Zona Industrial de Sabroso de Aguiar-Lote 2B, 5450-371 Vila Pouca de Aguiar, Portugal;
- CEPAT—Center for Heritage Studies, Avenida do Conde 5643, 4465-097 São Mamede de Infesta, Portugal;
| | - Nuno Oliveira Ferreira
- CEPAT—Center for Heritage Studies, Avenida do Conde 5643, 4465-097 São Mamede de Infesta, Portugal;
- Secundino Queirós Construction, Avenida Lopes de Oliveira 29, 5450-140 Pedras Salgadas, Portugal
| | - Lina Nunes
- LNEC—Laboratório Nacional de Engenharia Civil, Structures Department, Av. do Brasil, 101, 1700-066 Lisbon, Portugal;
| | - Jorge M. Martins
- LEPABE—Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal;
- AliCE—Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
- DEMad—Department of Wood Engineering, Instituto Politécnico de Viseu, Campus Politécnico de Repeses, 3504-510 Viseu, Portugal
| | - Luisa H. Carvalho
- LEPABE—Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal;
- AliCE—Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
- DEMad—Department of Wood Engineering, Instituto Politécnico de Viseu, Campus Politécnico de Repeses, 3504-510 Viseu, Portugal
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5
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Quan F, Wu B, Guo Y, Zhang X, Shen W, Jia F, Liu X, Ai Z, Zhang L. Electrochemical removal of gaseous benzene using a flow-through reactor with efficient and ultra-stable titanium suboxide/titanium-foam anode at ambient temperature. J Colloid Interface Sci 2023; 645:533-541. [PMID: 37163799 DOI: 10.1016/j.jcis.2023.04.160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 04/26/2023] [Accepted: 04/28/2023] [Indexed: 05/12/2023]
Abstract
Catalytic oxidation technology is currently considered as a feasible approach to degrade and mineralize volatile organic compounds (VOCs). However, it is still challenging to realize efficient removal of VOCs through catalytic oxidation at room temperature. In our study, a novel flow-through electrocatalytic reactor was designed, composed of porous solid-electrolyte, gas-permeable titanium sub-oxides/titanium-foam (TiSO/Ti-foam) as anode and platinum coated titanium foam (Pt/Ti-foam) as cathode. This device could oxidize nearly 100% of benzene (10 ppm) to carbon dioxide at a current density of 1.2 mA/cm2 under room temperature. More importantly, the device maintained excellent stability over 1000 h. Mechanism of benzene mineralization was discussed. Hydroxyl radicals generated on the TiSO/Ti-foam anode played a crucial role in the oxidation of benzene. This study provides a promising prototype of the electrochemical air purifier, and may find its application in domestic and industrial air pollution control.
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Affiliation(s)
- Fengjiao Quan
- College of Chemistry, Central China Normal University, Wuhan 430079, PR China; College of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430023, PR China
| | - Bin Wu
- College of Chemistry, Central China Normal University, Wuhan 430079, PR China
| | - Yuxiao Guo
- College of Chemistry, Central China Normal University, Wuhan 430079, PR China
| | - Xu Zhang
- College of Chemistry, Central China Normal University, Wuhan 430079, PR China
| | - Wenjuan Shen
- College of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430023, PR China
| | - Falong Jia
- College of Chemistry, Central China Normal University, Wuhan 430079, PR China.
| | - Xiao Liu
- College of Chemistry, Central China Normal University, Wuhan 430079, PR China.
| | - Zhihui Ai
- College of Chemistry, Central China Normal University, Wuhan 430079, PR China
| | - Lizhi Zhang
- College of Chemistry, Central China Normal University, Wuhan 430079, PR China
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6
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Hadi A, Niaei A, Seifi A, Rasoulzadeh Y. The impact of operational factors on degradation of formaldehyde as a human carcinogen using Ag 3 PO 4 /TiO 2 photocatalyst. Health Promot Perspect 2023; 13:47-53. [PMID: 37309430 PMCID: PMC10257563 DOI: 10.34172/hpp.2023.06] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Accepted: 01/21/2023] [Indexed: 06/14/2023] Open
Abstract
Background: The International Agency for Research on Cancer (IARC) identified formaldehyde as a carcinogen in 2004, yet formaldehyde is widely used in health care settings and various industries. In recent years, photocatalytic oxidation has been developed as a potential technique for removing pollutants arising from organic chemical agents and consequently promoting the health indices. This study investigated the effect of operational factors in optimizing formaldehyde removal from the air using Ag3 PO4 /TiO2 photocatalyst. Methods: An experimental study was designed to investigate the effect of operational factors on the efficiency of formaldehyde degradation. The variables investigated in this study include pollutant retention time, initial pollutant concentration and relative humidity. Sol-gel method was used to synthesize the nano-composite photocatalyst. An ideal experimental design was carried out based on Box-Behnken design (BBD) with response surface methodology (RSM). The sample size in this study includes all the glasses coated with Ag3 PO4 /TiO2 photocatalyst. Results: The maximum formaldehyde degradation of 32% was obtained at the initial concentration of 2 ppm, 20% relative humidity, and 90 minutes of retention time. Based on the statistical results, the correlation coefficient of the present study for the impact of operational factors on formaldehyde degradation was 0.9635, which means that there is only 3.65% probability of error in the model. Conclusion: The operational factors examined in this study (retention time, relative humidity, and initial formaldehyde concentration) were significantly influential in the degradation efficiency of formaldehyde by the photocatalyst. Due to the high exposure of employees and clients of health and treatment centers to formaldehyde as a carcinogenic substance, the results of this study can be used in ventilation systems to remove environmental pollutants in health care centers and other occupational settings.
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Affiliation(s)
- Asghar Hadi
- Department of Occupational Health Engineering, Faculty of Health, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Aligholi Niaei
- Catalyst & Reactor Research Lab, Department of Chemical & Petroleum Engineering, University of Tabriz, Tabriz, Iran
| | - Azam Seifi
- Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
- Department of Chemistry, Gebze Technical University, Gebze, Kocaeli, Turkey
| | - Yahya Rasoulzadeh
- Department of Occupational Health Engineering, Faculty of Health, Tabriz University of Medical Sciences, Tabriz, Iran
- Road Traffic Injury Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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7
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Qiao S, Song L, Li S, Liu L, Cai H, Si L, Guo C. Overexpression of CcFALDH from spider plant (Chlorophytum comosum) enhances the formaldehyde removing capacity of transgenic gloxinia (Sinningia speciosa) 1. ENVIRONMENTAL RESEARCH 2023; 223:115466. [PMID: 36773637 DOI: 10.1016/j.envres.2023.115466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 01/23/2023] [Accepted: 02/08/2023] [Indexed: 06/18/2023]
Abstract
Formaldehyde can cause leukemia and nasopharyngeal cancer in humans, and is a major indoor air pollutant. In this study, to improve the ability of flowering plants to purify formaldehyde, we cloned the CcFALDH gene encoding formaldehyde dehydrogenase (FALDH) from the spider plant (Chlorophytum comosum), which encodes 379 amino acids with the alcohol dehydrogenase (ADH) structural domain, and used it to transform the flowering plant gloxinia (Sinningia speciosa). The FALDH activity of transgenic gloxinia was 1.8-2.7 times that of wild-type (WT) with a considerable increase in formaldehyde stress tolerance. The activities of the antioxidant enzymes SOD, POD, and CAT of transgenic gloxinia were 1.5-2.0 times those of the WT under formaldehyde stress; H2O2, O2-, and MDA contents were markedly lower than those in WT. Liquid formaldehyde and gaseous formaldehyde were metabolized at 2.1-2.8 and 2.1-2.7 times higher rates in transgenic gloxinia than in WT. Our findings indicate that overexpression of CcFALDH can enhance the capacity of flowering plants to metabolize formaldehyde, which provides a new strategy to tackle the indoor formaldehyde pollution problem.
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Affiliation(s)
- Sheng Qiao
- Key Laboratory of Molecular Cytogenetics and Genetic Breeding of Heilongjiang Province, College of Life Science and Technology, Harbin Normal University, Harbin, 150025, China.
| | - Lili Song
- Key Laboratory of Molecular Cytogenetics and Genetic Breeding of Heilongjiang Province, College of Life Science and Technology, Harbin Normal University, Harbin, 150025, China; Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, Supervision and Test Center for Ecological Environment Safety of Crops of MOA, Shanghai Key Laboratory of Agricultural Genetics and Breeding, Shanghai, 201106, China.
| | - Siyu Li
- Key Laboratory of Molecular Cytogenetics and Genetic Breeding of Heilongjiang Province, College of Life Science and Technology, Harbin Normal University, Harbin, 150025, China.
| | - Lei Liu
- Key Laboratory of Molecular Cytogenetics and Genetic Breeding of Heilongjiang Province, College of Life Science and Technology, Harbin Normal University, Harbin, 150025, China.
| | - Hongsheng Cai
- Key Laboratory of Molecular Cytogenetics and Genetic Breeding of Heilongjiang Province, College of Life Science and Technology, Harbin Normal University, Harbin, 150025, China.
| | - Liang Si
- Key Laboratory of Molecular Cytogenetics and Genetic Breeding of Heilongjiang Province, College of Life Science and Technology, Harbin Normal University, Harbin, 150025, China.
| | - Changhong Guo
- Key Laboratory of Molecular Cytogenetics and Genetic Breeding of Heilongjiang Province, College of Life Science and Technology, Harbin Normal University, Harbin, 150025, China.
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Zhang Y, Xu N, Liu Z, Bai Y, Wu C, Guo Z. A Knudsen diffusion model for predicting VOC emissions from porous wood-based panels based on porosimetry tests. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:34598-34611. [PMID: 36513898 DOI: 10.1007/s11356-022-24456-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 11/25/2022] [Indexed: 06/17/2023]
Abstract
Volatile organic compounds (VOCs) emitted from porous wood-based panels with fractal structure severely pollute indoor environment. Different from previous studies which the diffusion type of VOC in building materials is attributed to Fick diffusion, VOC emission from porous wood-based panels belongs to Knudsen diffusion is firstly determined by comparing the pore diameter of internal channel with VOC molecular free path in this paper. Therefore, a time fractional mass transfer model related to the fractal dimension has been proposed to analyze Knudsen diffusion characteristics firstly. This model considers areal porosity has an impact on surface emission. Analytical solution of the present model is obtained for the first time. Furthermore, it is proved that the finite difference scheme is solvable, unconditionally stable, and convergent, and numerical simulation result and experimental data match well. Moreover, the influences of the fractal dimension df, areal porosity ε, and delay time parameter λ on VOC emission are demonstrated and analyzed; results suggest that the higher ε and df, and lower λ promote VOC emission, which can provide guidance for improving indoor air quality.
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Affiliation(s)
- Yan Zhang
- School of Science Beijing, University of Civil Engineering and Architecture, Beijing, 100044, China.
- Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China.
| | - Ning Xu
- School of Science Beijing, University of Civil Engineering and Architecture, Beijing, 100044, China
- Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China
| | - Ziyan Liu
- Overseas Chinese College, Capital University of Economics and Business, Beijing, 100070, China
| | - Yu Bai
- School of Science Beijing, University of Civil Engineering and Architecture, Beijing, 100044, China
- Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China
| | - Chuandong Wu
- Department of Chemistry, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Zhongbao Guo
- China Building Material Test & Certification Group Co., Ltd, Beijing, 100024, China
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9
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Feng B, Feng Y, Li Y, Su Y, Deng Y, Wei J. Synthesis of Mesoporous Ag 2O/SnO 2 Nanospheres for Selective Sensing of Formaldehyde at a Low Working Temperature. ACS Sens 2022; 7:3963-3972. [PMID: 36511787 DOI: 10.1021/acssensors.2c02232] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Formaldehyde (HCHO) is a prevalent indoor gas pollutant that has been seriously endangering human health. Developing semiconductor metal oxide (SMO) gas sensors for selective measurement of formaldehyde at low working temperatures remains a great challenge. In this work, silver/tin-polyphenol hybrid spheres are applied as a sacrificial template for the fabrication of spherical mesoporous Ag2O/SnO2 sensing materials. The obtained mesoporous Ag2O/SnO2 spheres have a uniform particle size (∼80 nm), large pore size (5.8 nm), and high specific surface area (71.3 m2 g-1). The response is 140 toward formaldehyde (10 ppm) at a low working temperature (75 °C). The detection limit reaches a low level of 23.6 ppb. Most importantly, it has excellent selectivity toward interfering gases. When the concentration of the interfering gas (e.g., ethanol) is 5 times as high as that of formaldehyde, the response is little affected. Theoretical calculations suggest that the addition of Ag2O can significantly enhance the adsorption energy toward formaldehyde, thus improving formaldehyde sensing performance. This work demonstrates an efficient self-template synthesis strategy for noble metal catalyst-decorated mesoporous metal oxide spheres, which could boost gas sensing performance at a lower working temperature.
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Affiliation(s)
- Bingxi Feng
- Institute of Analytical Chemistry and Instrument for Life Science, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an710049, Shaanxi, P. R. China
| | - Youyou Feng
- Institute of Analytical Chemistry and Instrument for Life Science, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an710049, Shaanxi, P. R. China
| | - Yuxin Li
- Institute of Analytical Chemistry and Instrument for Life Science, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an710049, Shaanxi, P. R. China
| | - Yaqiong Su
- School of Chemistry, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an710049, Shaanxi, P. R. China
| | - Yonghui Deng
- Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers, iChEM, Fudan University, Shanghai200433, P. R. China
| | - Jing Wei
- Institute of Analytical Chemistry and Instrument for Life Science, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an710049, Shaanxi, P. R. China
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10
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Yuan F, Yang R, Li C, Zhang X, Sun Z. Enhanced visible-light properties of TiO2/diatomite composite over varied bismuth semiconductors modification for formaldehyde photodegradation: A comparative study. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121477] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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11
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Palladium-Doped Single-Walled Carbon Nanotubes as a New Adsorbent for Detecting and Trapping Volatile Organic Compounds: A First Principle Study. NANOMATERIALS 2022; 12:nano12152572. [PMID: 35957007 PMCID: PMC9370723 DOI: 10.3390/nano12152572] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 07/23/2022] [Accepted: 07/23/2022] [Indexed: 01/27/2023]
Abstract
Volatile organic compounds (VOCs) are in the vapor state in the atmosphere and are considered pollutants. Density functional theory (DFT) calculations with the wb97xd exchange correlation functional and the 6-311+G(d,p) basis set are carried out to explore the potential possibility of palladium-doped single-walled carbon nanotubes (Pd/SWCNT-V), serving as the resource for detecting and/or adsorbing acetonitrile (ACN), styrene (STY), and perchloroethylene (PCE) molecules as VOCs. The suggested adsorbent in this study is discussed with structural parameters, frontier molecular orbital theory, molecular electrical potential surfaces (MEPSs), natural bond orbital (NBO) analyses, and the density of states. Furthermore, following the Bader theory of atoms in molecules (AIM), the topological properties of the electron density contributions for intermolecular interactions are analyzed. The obtained results show efficient VOC loading via a strong chemisorption process with a mean adsorption energy of −0.94, −1.27, and −0.54 eV for ACN, STY, and PCE, respectively. Our results show that the Pd/SWCNT-V can be considered a good candidate for VOC removal from the environment.
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12
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Sheng W, Zhang X, Yu M, Jin M, Li N, Sun C, Wang L, Xia Q, Li X, Zhang Y, Zhu B, Liu K. A novel cell membrane-targeting fluorescent probe for imaging endogenous/exogenous formaldehyde in live cells and zebrafish. Analyst 2021; 146:7554-7562. [PMID: 34779444 DOI: 10.1039/d1an01669e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Formaldehyde (FA), an economically important chemical, has become a global pollutant and poses a threat to human health. As a kind of reactive carbonyl species, the abnormal production and degradation of FA in cells are related to many diseases. Therefore, it is of great significance to detect FA on the cell membrane and identify the internal and external sources of FA to analyse the causes of FA-induced physiological and pathological changes. In this work, a novel fluorescent probe Mem-FA was constructed by combining a dodecyl chain to target the cell membrane. Based on photoinduced electron transfer (PET), the probe relies on hydrazine as the receptor for FA recognition. Through this mechanism, the probe can detect FA sensitively, selectively and quantitatively. In addition, the probe Mem-FA can detect FA in vivo, especially the endogenous FA produced by tetrahydrofolate in a one-carbon cycle. More importantly, the probe Mem-FA can sensitively detect and distinguish the internal and external sources of FA on the cell membrane. Therefore, Mem-FA is capable of specifically tracing the fluctuations of FA-induced diseases.
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Affiliation(s)
- Wenlong Sheng
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250103, China. .,Engineering Research Center of Zebrafish Models for Human Diseases and Drug Screening of Shandong Province, Jinan, China.,Shandong Provincial Engineering Laboratory for Biological Testing Technology, Jinan, China
| | - Xue Zhang
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China.
| | - Miaohui Yu
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250103, China. .,Engineering Research Center of Zebrafish Models for Human Diseases and Drug Screening of Shandong Province, Jinan, China.,Shandong Provincial Engineering Laboratory for Biological Testing Technology, Jinan, China
| | - Meng Jin
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250103, China. .,Engineering Research Center of Zebrafish Models for Human Diseases and Drug Screening of Shandong Province, Jinan, China.,Shandong Provincial Engineering Laboratory for Biological Testing Technology, Jinan, China
| | - Ning Li
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250103, China. .,Engineering Research Center of Zebrafish Models for Human Diseases and Drug Screening of Shandong Province, Jinan, China.,Shandong Provincial Engineering Laboratory for Biological Testing Technology, Jinan, China
| | - Chen Sun
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250103, China. .,Engineering Research Center of Zebrafish Models for Human Diseases and Drug Screening of Shandong Province, Jinan, China.,Shandong Provincial Engineering Laboratory for Biological Testing Technology, Jinan, China
| | - Lizhen Wang
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250103, China. .,Engineering Research Center of Zebrafish Models for Human Diseases and Drug Screening of Shandong Province, Jinan, China.,Shandong Provincial Engineering Laboratory for Biological Testing Technology, Jinan, China
| | - Qing Xia
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250103, China. .,Engineering Research Center of Zebrafish Models for Human Diseases and Drug Screening of Shandong Province, Jinan, China.,Shandong Provincial Engineering Laboratory for Biological Testing Technology, Jinan, China
| | - Xiaobin Li
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250103, China. .,Engineering Research Center of Zebrafish Models for Human Diseases and Drug Screening of Shandong Province, Jinan, China.,Shandong Provincial Engineering Laboratory for Biological Testing Technology, Jinan, China
| | - Yun Zhang
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250103, China. .,Engineering Research Center of Zebrafish Models for Human Diseases and Drug Screening of Shandong Province, Jinan, China.,Shandong Provincial Engineering Laboratory for Biological Testing Technology, Jinan, China
| | - Baocun Zhu
- School of Water Conservancy and Environment, University of Jinan, Jinan 250022, China.
| | - Kechun Liu
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250103, China. .,Engineering Research Center of Zebrafish Models for Human Diseases and Drug Screening of Shandong Province, Jinan, China.,Shandong Provincial Engineering Laboratory for Biological Testing Technology, Jinan, China
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13
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Paper-Based Vapor Detection of Formaldehyde: Colorimetric Sensing with High Sensitivity. CHEMOSENSORS 2021. [DOI: 10.3390/chemosensors9120335] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
We report on a novel colorimetric sensor system for highly sensitive detection of formaldehyde (FA) in the gas phase. The sensor is constructed with paper towel as a substrate coated with the sulfuric acid salt of hydroxylamine ((NH2OH)2·H2SO4) together with two pH indicators, bromophenol blue and thymol blue. Upon exposure to FA, the hydroxylamine will react with the absorbed FA to form a Schiff base (H2C=N-OH), thus releasing a stoichiometric amount of sulfuric acid, which in turn induces a color change of the pH indicator. Such a color change was significantly enriched by incorporating two pH indicators in the system. With the optimized molar ratio of the two pH indicators, the color change (from brown to yellow, and to red) could become so dramatic as to be visible to the eye depending on the concentration of FA. In particular, under 80 ppb of FA (the air quality threshold set by WHO) the color of the sensor substrate changes from brown to yellow, which can even be envisioned clearly by the naked eyes. By using a color reader, the observed color change can be measured quantitatively as a function of the vapor concentration of FA, which produces a linear relationship as fitted with the data points. This helps estimate the limit of detection (LOD), to be 10 ppb under an exposure time of 10 min, which is much lower than the air quality threshold set by WHO. The reported sensor also demonstrates high selectivity towards FA with no color change observed when exposed to other common chemicals, including solvents and volatile organic compounds. With its high sensitivity and selectivity, the proposed paper-based colorimetric sensor thus developed can potentially be employed as a low-cost and disposable detection kit that may find broad application in detecting FA in indoor air and many other environments.
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14
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Wang X, Hong S, Lian H, Zhan X, Cheng M, Huang Z, Manzo M, Cai L, Nadda A, Le QV, Xia C. Photocatalytic degradation of surface-coated tourmaline-titanium dioxide for self-cleaning of formaldehyde emitted from furniture. JOURNAL OF HAZARDOUS MATERIALS 2021; 420:126565. [PMID: 34252680 DOI: 10.1016/j.jhazmat.2021.126565] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 06/08/2021] [Accepted: 07/01/2021] [Indexed: 06/13/2023]
Abstract
Formaldehyde emission is an intrinsic property derived from aldehyde-based resin that is used in wood-based composites. To reduce formaldehyde emission from plywood, the composite catalyst of tourmaline-titanium dioxide (T-TiO2) was fabricated by the sol-gel method. Furthermore, the impregnated paper loaded with the T-TiO2 composite catalyst was used to decorate the surface of 5-layer poplar plywood. The physicochemical structure, photocatalytic activity of T-TiO2 composite catalyst and its mechanism of degrading gaseous formaldehyde and generating air negative ions were assessed. The results discovered that the synergistic influence of the tourmaline and TiO2 anatase nanocrystals achieved good photodegradation of the gaseous formaldehyde. The neat T(20%)-TiO2 catalyst offered a higher formaldehyde removal efficiency (92.2%) than other catalysts, possessing 800 ions/cm3 of air negative ions concentration after 10-h visible light irradiation. The poplar plywood with a load of 3% T(20%)-TiO2 catalyst can stably induce the degradation formaldehyde into air negative ions with a concentration of 1200 ions/cm3 in visible light. The impregnation process of paper was feasible to be industrialized and the decorated wood-based composites can be widely applied in the furniture industry.
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Affiliation(s)
- Xiangjie Wang
- Co-Innovation Center of Efficient Processing and Utilization of Forestry Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China; Jiangsu Engineering Research Center of Fast-growing Trees and Agri-fiber Materials, Nanjing, Jiangsu 210037, China
| | - Shu Hong
- Co-Innovation Center of Efficient Processing and Utilization of Forestry Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China; Jiangsu Engineering Research Center of Fast-growing Trees and Agri-fiber Materials, Nanjing, Jiangsu 210037, China
| | - Hailan Lian
- Co-Innovation Center of Efficient Processing and Utilization of Forestry Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China; Jiangsu Engineering Research Center of Fast-growing Trees and Agri-fiber Materials, Nanjing, Jiangsu 210037, China.
| | - Xianxu Zhan
- DeHua TB New Decoration Materials Co., Ltd. Enterprise of Graduate Research Station of Jiangsu Province, Huzhou, Zhejiang 313200, China
| | - Mingjuan Cheng
- DeHua TB New Decoration Materials Co., Ltd. Enterprise of Graduate Research Station of Jiangsu Province, Huzhou, Zhejiang 313200, China
| | - Zhenhua Huang
- Department of Mechanical Engineering, University of North Texas, Denton, TX 76207, USA
| | - Maurizio Manzo
- Department of Mechanical Engineering, University of North Texas, Denton, TX 76207, USA
| | - Liping Cai
- Co-Innovation Center of Efficient Processing and Utilization of Forestry Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China; Department of Mechanical Engineering, University of North Texas, Denton, TX 76207, USA
| | - Ashok Nadda
- Department of Biotechnology and Bioinformatics, Jaypee University of Information Technology, Waknaghat, Solan 173 234, India
| | - Quyet Van Le
- Department of Materials Science and Engineering, Korea University, 145, Anam-ro Seongbuk-gu, Seoul 02841, South Korea
| | - Changlei Xia
- Co-Innovation Center of Efficient Processing and Utilization of Forestry Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China; Jiangsu Engineering Research Center of Fast-growing Trees and Agri-fiber Materials, Nanjing, Jiangsu 210037, China.
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15
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Wu P, Jin X, Qiu Y, Ye D. Recent Progress of Thermocatalytic and Photo/Thermocatalytic Oxidation for VOCs Purification over Manganese-based Oxide Catalysts. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:4268-4286. [PMID: 33720707 DOI: 10.1021/acs.est.0c08179] [Citation(s) in RCA: 76] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Volatile organic compounds (VOCs) are one of the main sources of air pollution, which are of wide concern because of their toxicity and serious threat to the environment and human health. Catalytic oxidation has been proven to be a promising and effective technology for VOCs abatement in the presence of heat or light. As environmentally friendly and low-cost materials, manganese-based oxides are the most competitive and promising candidates for the catalytic degradation of VOCs in thermocatalysis or photo/thermocatalysis. This article summarizes the research and development on various manganese-based oxide catalysts, with emphasis on their thermocatalytic and photo/thermocatalytic purification of VOCs in recent years in detail. Single manganese oxides, manganese-based oxide composites, as well as improving strategies such as morphology regulation, heterojunction engineering, and surface decoration by metal doping or universal acid treatment are reviewed. Besides, manganese-based monoliths for practical VOCs abatementare also discussed. Meanwhile, relevant catalytic mechanisms are also summarized. Finally, the existing problems and prospect of manganese-based oxide catalysts for catalyzing combustion of VOCs are proposed.
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Affiliation(s)
- Peng Wu
- Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Xiaojing Jin
- Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
- Guangdong Provincial Key Lab of Nano-Micro Materials Research, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Yongcai Qiu
- Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
- State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, China
| | - Daiqi Ye
- Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
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16
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Wang Z, Yu H, Xiao Y, Guo L, Zhang L, Dong X. Polydopamine mediated modification of manganese oxide on melamine sponge for photothermocatalysis of gaseous formaldehyde. JOURNAL OF HAZARDOUS MATERIALS 2021; 407:124795. [PMID: 33341567 DOI: 10.1016/j.jhazmat.2020.124795] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 12/04/2020] [Accepted: 12/04/2020] [Indexed: 06/12/2023]
Abstract
It is an urgent need to develop environmentally friendly strategies with low energy consumption for gaseous formaldehyde (HCHO) purification. Herein, a sponge based MS/PDA/MnOx catalyst with plentiful 3D porosities was constructed. The dual-functional PDA layer not only promoted the MnOx loading (25 wt% MnOx in the composite), but also acted as a photothermal converter to absorb photo-irradiation to heat MnOx catalyst (~80 °C after 10 min irradiation). Moreover, the 3D network structure favored the mass transfer and effectively reduced the catalyst agglomeration to expose more active sites. As a result, the obtained MS/PDA/MnOx photothermocatalyst showed highly efficient performance for removal of HCHO within concentration of 40-320 ppm at room temperature under xenon light irradiation. This process followed a pseudo-second-order model, and the reaction rate of the MS/PDA/MnOx was 4.82 times of the MS/MnOx. Finally, a possible photothermocatalysis mechanism was proposed based on the intermediate examination via the in-situ DRIFTS investigation.
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Affiliation(s)
- Zhongsen Wang
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Huijia Yu
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Yufei Xiao
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Limin Guo
- School of Environmental Science & Engineering, Huazhong University of Science & Technology, Wuhan 430074, PR China
| | - Lingxia Zhang
- State Key Laboratory of High Performance Ceramic and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, PR China
| | - Xiaoping Dong
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, PR China.
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17
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Hong J, Kang H, An J, Choi J, Hong T, Park HS, Lee DE. Towards environmental sustainability in the local community: Future insights for managing the hazardous pollutants at construction sites. JOURNAL OF HAZARDOUS MATERIALS 2021; 403:123804. [PMID: 33264906 DOI: 10.1016/j.jhazmat.2020.123804] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 08/06/2020] [Accepted: 08/24/2020] [Indexed: 06/12/2023]
Abstract
Although various technologies are being developed in the construction industry, management technologies for achieving environmental sustainability in the local community are still lacking. As such, this study suggests future insights for the development of an automated intelligent environment management system for the promotion of environmental sustainability in the local community, through a systematic review of 1,707 relevant literature. The systematic review was conducted in two steps: (i) quantitative review: keyword co-occurrence and trend analysis; and (ii) qualitative review: a review on monitoring, evaluation, and improvement technologies. As a result, the research level related to the local-level pollutants (noise, vibration, and dust) was found to be quantitatively insufficient, and the limitations of the existing technologies for these pollutants were presented. Eventually, to overcome these limitations, new technologies and application strategies that can be applied to construction sites as future research roadmap to effectively manage the hazardous pollutants were proposed. Furthermore, an intelligent management system should be developed, and the management of environmental complaints is also necessary for environmental sustainability at the local level in the construction industry. As a fundamental study, this study could become a benchmark for future researches dealing with environmental sustainability and hazardous pollutants in the construction industry.
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Affiliation(s)
- Juwon Hong
- Department of Architecture and Architectural Engineering, Yonsei University, Seoul, Republic of Korea.
| | - Hyuna Kang
- Department of Architecture and Architectural Engineering, Yonsei University, Seoul, Republic of Korea.
| | - Jongbaek An
- Department of Architecture and Architectural Engineering, Yonsei University, Seoul, Republic of Korea.
| | - Jinwoo Choi
- Department of Architecture and Architectural Engineering, Yonsei University, Seoul, Republic of Korea.
| | - Taehoon Hong
- Department of Architecture and Architectural Engineering, Yonsei University, Seoul, Republic of Korea.
| | - Hyo Seon Park
- Department of Architecture and Architectural Engineering, Yonsei University, Seoul, Republic of Korea.
| | - Dong-Eun Lee
- School of Arch, Civil, Environment, and Energy, Kyungpook National University, Daegu, Republic of Korea.
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18
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Shao H, Ren Y, Zhang Y, Wu C, Li W, Liu J. Factor analysis of the influence of environmental conditions on VOC emissions from medium density fibreboard and the correlation of the factors with fitting parameters. RSC Adv 2021; 11:26151-26159. [PMID: 35479464 PMCID: PMC9037345 DOI: 10.1039/d1ra02164h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 07/25/2021] [Indexed: 11/21/2022] Open
Abstract
RH has positive effects on the initial VOC emissions and ACR has negative effects on VOC emissions. a1 has a power relationship with ACR and a polynomial relationship with RH and b1 has a polynomial relationship with both ACR and RH.
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Affiliation(s)
- Huiqi Shao
- School of Chemistry and Biological Engineering
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Yifan Ren
- School of Chemistry and Biological Engineering
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Yan Zhang
- School of Science
- Beijing University of Civil Engineering and Architecture
- Beijing 100044
- China
| | - Chuandong Wu
- School of Chemistry and Biological Engineering
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Wenhui Li
- School of Chemistry and Biological Engineering
- University of Science and Technology Beijing
- Beijing 100083
- China
| | - Jiemin Liu
- School of Chemistry and Biological Engineering
- University of Science and Technology Beijing
- Beijing 100083
- China
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19
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Liang Q, Qu X, Bai N, Chen H, Zou X, Li GD. Alkali metal-incorporated spinel oxide nanofibers enable high performance detection of formaldehyde at ppb level. JOURNAL OF HAZARDOUS MATERIALS 2020; 400:123301. [PMID: 32947706 DOI: 10.1016/j.jhazmat.2020.123301] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 06/06/2020] [Accepted: 06/22/2020] [Indexed: 06/11/2023]
Abstract
Sensing material with high sensitivity, excellent selectivity and ultra-low detection limit is crucial for monitoring formaldehyde, which is a kind of hazardous gas to human health at very low concentration. Some one-dimensional semiconductor metal oxides show acceptable responses towards formaldehyde. However, the detection limit and selectivity of these sensors are still not satisfied, especially at ppb level. Herein, alkali metals (K, Na) doped CdGa2O4 nanofibers with excellent formaldehyde sensing performance are prepared by an electrospinning method. These nanofibers have been characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), electron paramagnetic resonance spectroscopy (EPR), elemental mapping and other techniques. As a result, the sensor based on 7.5 at.% K doped CdGa2O4 gives remarkably improved formaldehyde sensing properties compared with that of pristine CdGa2O4. The greatly increased sensitivity and selectivity should be attributed to the increased chemisorbed oxygen and the enhanced basicity caused by the additional alkali metal, respectively. All in all, the 7.5 at.% K doped CdGa2O4 is a good candidate for the rapid detecting formaldehyde at ppb level.
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Affiliation(s)
- Qihua Liang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Electron Microscopy Center, Jilin University, Changchun 130012, PR China
| | - Xuejian Qu
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Electron Microscopy Center, Jilin University, Changchun 130012, PR China
| | - Ni Bai
- School of Mechanical and Metallurgical Engineering, Jiangsu University of Science and Technology, Zhangjiagang 215600, PR China
| | - Hui Chen
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Electron Microscopy Center, Jilin University, Changchun 130012, PR China
| | - Xiaoxin Zou
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Electron Microscopy Center, Jilin University, Changchun 130012, PR China
| | - Guo-Dong Li
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Electron Microscopy Center, Jilin University, Changchun 130012, PR China.
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20
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van den Broek J, Klein Cerrejon D, Pratsinis SE, Güntner AT. Selective formaldehyde detection at ppb in indoor air with a portable sensor. JOURNAL OF HAZARDOUS MATERIALS 2020; 399:123052. [PMID: 32937713 DOI: 10.1016/j.jhazmat.2020.123052] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Revised: 05/04/2020] [Accepted: 05/25/2020] [Indexed: 06/11/2023]
Abstract
Formaldehyde is a carcinogenic indoor air pollutant emitted from wood-based furniture, building materials, paints and textiles. Yet, no low-cost sensor exists for on-site monitoring to fulfill stringent current and upcoming (e.g., 8 parts-per-billion by volume, ppb, in France by 2023) exposure guidelines. Here, we present an inexpensive and handheld formaldehyde detector with proven performance in real indoor air. Selectivity is achieved by a compact packed bed column of nanoporous polymer sorbent that separates formaldehyde from interferants present in ambient air. Downstream, a highly sensitive nanoparticle-based chemoresistive Pd-doped SnO2 sensor detects formaldehyde in the relevant concentration range down to 5 ppb within 2 min. As a proof-of-concept, we measured formaldehyde in indoor air and from different wood product emissions, in excellent agreement (R2 > 0.98) with high-resolution proton-transfer-reaction time-of-flight mass spectrometry. This detector is simple-in-use and readily applicable for on-site formaldehyde exposure monitoring at home or work. It is promising for internet-of-things (IOT) sensing networks or even wearables for personal exposure assessment.
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Affiliation(s)
- Jan van den Broek
- Particle Technology Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, CH-8092 Zurich, Switzerland
| | - David Klein Cerrejon
- Particle Technology Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, CH-8092 Zurich, Switzerland
| | - Sotiris E Pratsinis
- Particle Technology Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, CH-8092 Zurich, Switzerland
| | - Andreas T Güntner
- Particle Technology Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, CH-8092 Zurich, Switzerland.
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21
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Abstract
Oriented strand board (OSB) veneer technology and its performance have been widely studied in order to expand the range of OSB substrates. In this paper, OSB was a modified composite with boards as substrates, Myanmar old mahogany bark as the veneer material, and a cornstarch adhesive. Under such conditions, the optimal veneer technology was studied, and the index of the surface bonding strength and the veneer penetration rate were utilized in order to determine the performance. Two different processing technologies, cold pressing and hot pressing, were experimentally compared and hot pressing showed better performance. Subsequently, experiments were performed on the surface bonding strength and veneer penetration rate. The results show that the veneer performance of OSB is best when the unit pressure is 1.0 MPa, the hot-pressing temperature is 90 °C, and the hot-pressing time is 240 s. Furthermore, the magnitude of influence of the factors affecting the bonding strength is as follows: unit pressure > hot-pressing temperature > hot-pressing time. The research results have prospective significance for the performance optimization of OSB veneer technology.
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22
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Khoshnava SM, Rostami R, Mohamad Zin R, Štreimikienė D, Mardani A, Ismail M. The Role of Green Building Materials in Reducing Environmental and Human Health Impacts. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17072589. [PMID: 32290074 PMCID: PMC7177900 DOI: 10.3390/ijerph17072589] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Revised: 03/28/2020] [Accepted: 04/05/2020] [Indexed: 11/16/2022]
Abstract
Conventional building materials (CBMs) made from non-renewable resources are the main source of indoor air contaminants, whose impact can extend from indoors to outdoors. Given their sustainable development (SD) prospect, green building materials (GBMs) with non-toxic, natural, and organic compounds have the potential to reduce their overall impacts on environmental and human health. In this regard, biocomposites as GBMs are environmentally friendly, safe, and recyclable materials and their replacement of CBMs reduces environmental impacts and human health concerns. This study aims to develop a model of fully hybrid bio-based biocomposite as non-structural GBMs and compare it with fully petroleum-based composite in terms of volatile organic compound (VOC) emissions and human health impacts. Using a small chamber test (American Society for Testing and Materials (ASTM)-D5116) for VOC investigation and SimaPro software modeling with the ReCiPe method for evaluating human health impacts. Life cycle assessment (LCA) methodology is used, and the results indicate that switching the fully hybrid bio-based biocomposite with the fully petroleum-based composite could reduce more than 50% impacts on human health in terms of indoor and outdoor. Our results indicate that the usage of biocomposite as GBMs can be an environmentally friendly solution for reducing the total indoor and outdoor impacts on human health.
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Affiliation(s)
- Seyed Meysam Khoshnava
- UTM Construction Research Centre, Institute for Smart Infrastructure and Innovative Construction, School of Civil Engineering, Faculty of Engineering, Universiti Teknologi Malaysia (UTM), Johor 81310, Malaysia;
| | - Raheleh Rostami
- Department of Architecture, Sari Branch, Islamic Azad University, Sari 4816119318, Iran;
| | - Rosli Mohamad Zin
- School of Civil Engineering, Faculty of Engineering, Universiti Teknologi Malaysia (UTM), Johor 81310, Malaysia; (R.M.Z.); (M.I.)
| | - Dalia Štreimikienė
- Lithuanian Institute of Agrarian Economics, A. Vivulskio g. 4A-13, 03220 Vilnius, Lithuania
- Correspondence: (D.Š.); (A.M.)
| | - Abbas Mardani
- Informetrics Research Group, Ton Duc Thang University, Ho Chi Minh City 758307, Vietnam
- Faculty of Business Administration, Ton Duc Thang University, Ho Chi Minh City 758307, Vietnam
- Correspondence: (D.Š.); (A.M.)
| | - Mohammad Ismail
- School of Civil Engineering, Faculty of Engineering, Universiti Teknologi Malaysia (UTM), Johor 81310, Malaysia; (R.M.Z.); (M.I.)
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