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Oncina-Cánovas A, Vioque J, Riutort-Mayol G, Soler-Blasco R, Irizar A, Barroeta Z, Fernández-Somoano A, Tardón A, Vrijheid M, Guxens M, Carey M, Meharg C, Ralphs K, McCreanor C, Meharg A, Signes-Pastor AJ. Pro-vegetarian dietary patterns and essential and heavy metal exposure in children of 4-5-years from the INfancia y medio Ambiente cohort (INMA). Int J Hyg Environ Health 2024; 257:114344. [PMID: 38430670 DOI: 10.1016/j.ijheh.2024.114344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 02/22/2024] [Accepted: 02/24/2024] [Indexed: 03/05/2024]
Abstract
Dietary patterns provide a comprehensive assessment of food consumption, including essential nutrients and potential exposure to environmental contaminants. While pro-vegetarian (PVG) dietary patterns have shown health benefits in adults, their effects on children are less well studied. This study aims to explore the association between children's adherence to the most common PVG dietary patterns and their exposure to metals, assessed through urine concentration. In our study, we included a population of 723 children aged 4-5-years from the INfancia y Medio Ambiente (INMA) cohort in Spain. We calculated three predefined PVG dietary patterns, namely general (gPVG), healthful (hPVG), and unhealthful (uPVG), using dietary information collected through a validated Food Frequency Questionnaire. Urinary concentrations of various essential and heavy metals (Co, Cu, Zn, Se, Mo, Pb, and Cd) were measured using mass spectrometry. Additionally, urinary arsenic speciation, including arsenobetaine (AsB), dimethylarsinic acid (DMA), monomethylarsonic acid (MMA), and inorganic arsenic (iAs), was measured. The sum of urinary MMA and iAs was used to assess iAs exposure. We estimated primary (PMI) and secondary iAs methylation (SMI) indices. To explore the association between PVG dietary patterns in quintiles and metal exposure, we utilized multiple-adjusted linear regression models and the quantile g-computation approach. Compared with the lowest quintile, participants in the highest quintile of gPVG showed a 22.7% lower urinary Co (95% confidence interval (CI): -38.7; -1.98) and a 12.6% lower Se (95%CI: -22.9; -1.00) concentrations. Second quintile of adherence to hPVG was associated with a 51.7% lower urinary iAs + MMA concentrations (95%CI: -74.3; -8.61). Second quintile of adherence to an uPVG was associated with a 13.6% lower Se levels (95%CI: -22.9; -2.95) while the third quintile to this pattern was associated with 17.5% lower Mo concentrations (95%CI: -29.5; -2.95). The fourth quintile of adherence to gPVG was associated with a 68.5% higher PMI and a 53.7% lower SMI. Our study showed that adherence to a gPVG dietary pattern in childhood may modestly reduce the intakes of some essential metals such as Co and Se. Further investigations are warranted to explore any potential health implications.
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Affiliation(s)
- Alejandro Oncina-Cánovas
- Instituto de Investigación Sanitaria y Biomédica de Alicante, Universidad Miguel Hernández (ISABIAL-UMH), 03010, Alicante, Spain; Unidad de Epidemiología de la Nutrición, Departamento de Salud Pública, Historia de la Ciencia y Ginecología, Universidad Miguel Hernández (UMH), 03550, Alicante, Spain; CIBER Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III, 28034, Madrid, Spain.
| | - Jesús Vioque
- Instituto de Investigación Sanitaria y Biomédica de Alicante, Universidad Miguel Hernández (ISABIAL-UMH), 03010, Alicante, Spain; Unidad de Epidemiología de la Nutrición, Departamento de Salud Pública, Historia de la Ciencia y Ginecología, Universidad Miguel Hernández (UMH), 03550, Alicante, Spain; CIBER Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III, 28034, Madrid, Spain
| | - Gabriel Riutort-Mayol
- Foundation for the Promotion of Health and Biomedical Research in the Valencian Region, FISABIO-Public Health, Valencia, Spain
| | - Raquel Soler-Blasco
- CIBER Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III, 28034, Madrid, Spain; Foundation for the Promotion of Health and Biomedical Research in the Valencian Region, FISABIO-Public Health, Valencia, Spain; Department of Nursing, Universitat de València, Valencia, Spain
| | - Amaia Irizar
- Health Research Institute, Biodonostia, Donostia-San Sebastian, Spain
| | - Ziortza Barroeta
- Health Research Institute, Biodonostia, Donostia-San Sebastian, Spain
| | - Ana Fernández-Somoano
- CIBER Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III, 28034, Madrid, Spain; University Institute of Oncology of the Principality of Asturias (IUOPA), Department of Medicine, University of Oviedo, Julián Clavería Street s/n, 33006, Oviedo, Asturias, Spain; Institute of Health Research of the Principality of Asturias (ISPA), Roma Avenue s/n, 33001, Oviedo, Spain
| | - Adonina Tardón
- CIBER Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III, 28034, Madrid, Spain; University Institute of Oncology of the Principality of Asturias (IUOPA), Department of Medicine, University of Oviedo, Julián Clavería Street s/n, 33006, Oviedo, Asturias, Spain; Institute of Health Research of the Principality of Asturias (ISPA), Roma Avenue s/n, 33001, Oviedo, Spain
| | - Martine Vrijheid
- CIBER Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III, 28034, Madrid, Spain; ISGlobal, Barcelona, Spain; Universitat Pompeu Fabra, Barcelona, Spain
| | - Mònica Guxens
- CIBER Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III, 28034, Madrid, Spain; ISGlobal, Barcelona, Spain; Universitat Pompeu Fabra, Barcelona, Spain; Department of Child and Adolescent Psychiatry/Psychology, Erasmus MC, University Medical Centre, Rotterdam, the Netherlands
| | - Manus Carey
- Biological Sciences, Institute for Global Food Security, Queen's University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL, Northern Ireland, UK
| | - Caroline Meharg
- Biological Sciences, Institute for Global Food Security, Queen's University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL, Northern Ireland, UK
| | - Kathryn Ralphs
- Biological Sciences, Institute for Global Food Security, Queen's University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL, Northern Ireland, UK
| | - Coalain McCreanor
- Biological Sciences, Institute for Global Food Security, Queen's University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL, Northern Ireland, UK
| | - Andrew Meharg
- Biological Sciences, Institute for Global Food Security, Queen's University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL, Northern Ireland, UK
| | - Antonio J Signes-Pastor
- Instituto de Investigación Sanitaria y Biomédica de Alicante, Universidad Miguel Hernández (ISABIAL-UMH), 03010, Alicante, Spain; Unidad de Epidemiología de la Nutrición, Departamento de Salud Pública, Historia de la Ciencia y Ginecología, Universidad Miguel Hernández (UMH), 03550, Alicante, Spain; CIBER Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III, 28034, Madrid, Spain.
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O’Neill S, Robertson JMC, Héquet V, Chazarenc F, Pang X, Ralphs K, Skillen N, Robertson PKJ. Comparison of Titanium Dioxide and Zinc Oxide Photocatalysts for the Inactivation of Escherichia coli in Water Using Slurry and Rotating-Disk Photocatalytic Reactors. Ind Eng Chem Res 2023; 62:18952-18959. [PMID: 38020788 PMCID: PMC10655038 DOI: 10.1021/acs.iecr.3c00508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 07/07/2023] [Accepted: 07/10/2023] [Indexed: 12/01/2023]
Abstract
The application of photocatalysis for the disinfection of water has been extensively reported over the past 30 years. Titanium dioxide (TiO2) has been the most widely and successfully used photocatalyst to date; however, it is not without its limitations. Frequently observed long lag times, sometimes up to 60 min, before bacterial inactivation begins and the presence of residual microorganisms, for example, up to 104 colony forming units, remaining after treatment are ongoing challenges with this particular photocatalyst. It is therefore important to find alternative photocatalysts that can address these issues. In this study, we compared the disinfection capacity of TiO2 with that of zinc oxide (ZnO) using Escherichia coli as a model organism in both a suspended and immobilized catalyst system. Our results showed that ZnO was superior to TiO2 in a number of areas. Not only were bacterial rates of destruction much quicker with ZnO, but no lag time was observed prior to inactivation in suspended systems. Furthermore, complete bacterial destruction was observed within the treatment times under investigation. The greater efficiency of ZnO is believed to be due to the decomposition of the bacterial cell wall being driven by hydrogen peroxide as opposed to hydroxyl radicals. The results reported in this paper show that ZnO is a more efficient and cost-effective photocatalyst than TiO2 and that it represents a viable alternative photocatalyst for water disinfection processes.
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Affiliation(s)
- Sean O’Neill
- School
of Chemistry and Chemical Engineering, Queen’s
University Belfast, David Keir Building, Stranmillis Road, Belfast BT9 5GS, Ireland
- IMT
Atlantique, CNRS, GEPEA, UMR 6144, 4 rue Alfred Kastler, CS 20722, Nantes Cedex
3 44403, France
| | - Jeanette M. C. Robertson
- School
of Biological Sciences, Queen’s University
Belfast, Chlorine Gardens, Belfast BT9 5DL, Ireland
| | - Valérie Héquet
- IMT
Atlantique, CNRS, GEPEA, UMR 6144, 4 rue Alfred Kastler, CS 20722, Nantes Cedex
3 44403, France
| | - Florent Chazarenc
- Research
Unit REVERSAAL, Centre INRAE Lyon-Grenoble, Auvergne-Rhône-Alpes, 5 Rue de la Doua, CS 20244, Villeurbanne Cedex 69625, France
| | - Xinzhu Pang
- School
of Chemistry and Chemical Engineering, Queen’s
University Belfast, David Keir Building, Stranmillis Road, Belfast BT9 5GS, Ireland
| | - Kathryn Ralphs
- School
of Chemistry and Chemical Engineering, Queen’s
University Belfast, David Keir Building, Stranmillis Road, Belfast BT9 5GS, Ireland
| | - Nathan Skillen
- School
of Chemistry and Chemical Engineering, Queen’s
University Belfast, David Keir Building, Stranmillis Road, Belfast BT9 5GS, Ireland
| | - Peter K. J. Robertson
- School
of Chemistry and Chemical Engineering, Queen’s
University Belfast, David Keir Building, Stranmillis Road, Belfast BT9 5GS, Ireland
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Notario-Barandiaran L, Irizar A, Begoña-Zubero M, Soler-Blasco R, Riutort-Mayol G, Fernández-Somoano A, Tardón A, Casas M, Vrijheid M, Meharg A, Carey M, Meharg C, Ralphs K, McCreanor C, Grimalt JO, Vioque J, Signes-Pastor AJ. Association between mediterranean diet and metal(loid) exposure in 4-5-year-old children living in Spain. Environ Res 2023; 233:116508. [PMID: 37392824 DOI: 10.1016/j.envres.2023.116508] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 06/22/2023] [Accepted: 06/23/2023] [Indexed: 07/03/2023]
Abstract
Even relatively low levels of metals exposure may impact health, particularly among vulnerable populations such as infants and young children. However, little is known about the interplay between simultaneous metal exposures, common in real-life scenarios, and their association with specific dietary patterns. In this study, we have evaluated the association between adherence to Mediterranean diet (MD) and urinary metal concentrations individually and as an exposure mixture in 713 children aged 4-5-years from the INMA cohort study. We used a validated food frequency questionnaire to calculate two MD indexes scores: aMED and rMED. These indexes gather information on various food groups within the MD and score differently. To measure urinary concentrations of cobalt, copper, zinc, molybdenum, selenium, lead, and cadmium as exposure biomarkers, we used inductively coupled plasma mass spectrometry (ICP-MS), coupled with an ion chromatography (IC) equipment for arsenic speciation analysis. We applied linear regression and quantile g-computation, adjusted for confounders, to analyse the association between MD adherence and exposure to the metal mixture. High adherence to MD such as the quintile (Q) 5 MD was associated with higher urinary arsenobetaine (AsB) levels than Q1, with β values of 0.55 (confidence interval - CI 95% 0.01; 1.09) for aMED and 0.73 (CI 95% 0.13; 1.33) for rMED. Consumption of fish was associated with increased urinary AsB but reduced inorganic arsenic concentrations. In contrast, the aMED vegetables consumption increased urinary inorganic arsenic content. A moderate level of adherence to MD (Q2 and Q3) was associated with lower copper urinary concentrations than Q1, with β values of -0.42 (CI 95% -0.72; -0.11) for Q2 and -0.33 (CI 95% -0.63; -0.02) for Q3, but only with aMED. Our study, conducted in Spain, revealed that adhering to the MD reduces exposure to certain metals while increasing exposure to others. Specifically, we observed increase in exposure to non-toxic AsB, highlighting the significance of consuming fish/seafood. However, it is crucial to emphasize the necessity for additional efforts in reducing early-life exposure to toxic metals, even when adhering to certain food components of the MD.
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Affiliation(s)
- L Notario-Barandiaran
- Unidad de Epidemiología de La Nutrición, Universidad Miguel Hernández, Alicante, Spain; Instituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL), Alicante, Spain.
| | - A Irizar
- Biodonostia, Health Research Institute, Donostia, Gipuzkoa, Spain
| | - M Begoña-Zubero
- Biodonostia, Health Research Institute, Donostia, Gipuzkoa, Spain; Preventive Medicine and Public Health Department, University of the Basque Country, Leioa, Bizkaia, Spain
| | - R Soler-Blasco
- Epidemiology and Environmental Health Joint Research Unit, FISABIO-Universitat Jaume I-Universitat de València, Valencia, Spain; Department of Nursing, Universitat de València, Valencia, Spain
| | - G Riutort-Mayol
- Foundation for the Promotion of Health and Biomedical Research in the Valencian Region, FISABIO-Public Health, Valencia, Spain
| | - A Fernández-Somoano
- CIBER de Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III (ISCIII), 28029, Madrid, Spain; Unidad de Epidemiología Molecular Del Cáncer, Instituto Universitario de Oncología Del Principado de Asturias (IUOPA), Departamento de Medicina, Universidad de Oviedo, 33006, Oviedo, Spain; Instituto de Investigación Sanitaria Del Principado de Asturias (ISPA), 33001, Oviedo, Spain
| | - A Tardón
- CIBER de Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III (ISCIII), 28029, Madrid, Spain; Unidad de Epidemiología Molecular Del Cáncer, Instituto Universitario de Oncología Del Principado de Asturias (IUOPA), Departamento de Medicina, Universidad de Oviedo, 33006, Oviedo, Spain; Instituto de Investigación Sanitaria Del Principado de Asturias (ISPA), 33001, Oviedo, Spain
| | - M Casas
- CIBER de Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III (ISCIII), 28029, Madrid, Spain; Barcelona Institute for Global Health (ISGlobal), Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain
| | - M Vrijheid
- CIBER de Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III (ISCIII), 28029, Madrid, Spain; Barcelona Institute for Global Health (ISGlobal), Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain
| | - A Meharg
- School of Biological Sciences, Institute for Global Food Security, Queen's University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL, Northern Ireland, UK
| | - M Carey
- School of Biological Sciences, Institute for Global Food Security, Queen's University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL, Northern Ireland, UK
| | - C Meharg
- School of Biological Sciences, Institute for Global Food Security, Queen's University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL, Northern Ireland, UK
| | - K Ralphs
- School of Biological Sciences, Institute for Global Food Security, Queen's University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL, Northern Ireland, UK
| | - C McCreanor
- School of Biological Sciences, Institute for Global Food Security, Queen's University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL, Northern Ireland, UK
| | - J O Grimalt
- Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Jordi Girona Street, 18-26, 08034, Barcelona, Cataluña, Spain
| | - J Vioque
- Unidad de Epidemiología de La Nutrición, Universidad Miguel Hernández, Alicante, Spain; Instituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL), Alicante, Spain; CIBER de Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III (ISCIII), 28029, Madrid, Spain
| | - A J Signes-Pastor
- Unidad de Epidemiología de La Nutrición, Universidad Miguel Hernández, Alicante, Spain; Instituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL), Alicante, Spain; CIBER de Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III (ISCIII), 28029, Madrid, Spain.
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Gupta Y, Hossain M, Islam MR, Talukder MMH, Khokon MAR, Uddin MM, Kabir H, Carey M, Ralphs K, de Moraes NV, Meharg AA, Meharg C. Recycled Household Ash in Rice Paddies of Bangladesh for Sustainable Production of Rice Without Altering Grain Arsenic and Cadmium. Expo Health 2023; 16:87-99. [PMID: 38313597 PMCID: PMC10830805 DOI: 10.1007/s12403-023-00539-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 01/13/2023] [Accepted: 01/28/2023] [Indexed: 02/06/2024]
Abstract
In Bangladesh most agronomic biomass (straw, husk, dried dung) is burnt for domestic cooking use. Consequently, the soil is continuously stripped of mineral nutrients and carbon (C) substrate. Here we investigate if recycling of household ash (ash) as fertilizer can sustainably improve soil fertility as well as minimise accumulation of toxic elements (As, Cd) in rice grain. Large scale field trials across two geographic regions (Barind, Madhupur) and two seasons (wet, dry) and with application of 3 fertiliser treatments (NPKS, ash, NPKS + ash) were conducted. At the end of each season, the impact of region*season*treatment on soil microbial comunities, rice yield, and grain quality (As, Cd, nutrient elements) was assessed. When compared to conventional field application rates of NPKS (control), application of ash boosted rice yield by circa. 20% in both regions during wet and dry season, with no effect on rice grain carcinogenic inorganic arsenic (iAs), dimethylarsonic acid (DMA) or cadmium (Cd), but with potential to increase zinc (Zn). For soil microbial communities, a significant region and season effect as well as correlation with elements in rice grain was observed, amongst these Cd, Zn, iAs and DMA. This study illustrates that application of ash can reduce the requirement for expensive chemical fertiliser, whilst at the same time increasing rice yield and maintaining grain quality, making farming in Bangladesh more sustainable and productive. The study also implies that the combined impact of region, season, and soil microbes determines accumulation of elements in rice grain. Supplementary Information The online version contains supplementary material available at 10.1007/s12403-023-00539-y.
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Affiliation(s)
- Yogesh Gupta
- Institute for Global Food Security, School of Biological Sciences, Queen’s University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL UK
- School of Medicine, Dentistry and Biomedical Sciences, Queen’s University Belfast, 97 Lisburn Road, Belfast, BT9 7BL UK
| | - Mahmud Hossain
- Department of Soil Science, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - M. Rafiqul Islam
- Department of Soil Science, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | | | | | - Mohammad Mahir Uddin
- Department of Entomology, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Humayun Kabir
- Department of Agricultural Economics, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Manus Carey
- Institute for Global Food Security, School of Biological Sciences, Queen’s University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL UK
| | - Kathryn Ralphs
- Institute for Global Food Security, School of Biological Sciences, Queen’s University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL UK
| | - Natalia Valadares de Moraes
- Department of Natural Products and Toxicology, School Pharmaceutical Sciences, Sao Paulo State University (UNESP), Rodovia Araraquara-Jau, Km 01, Araraquara, SP 14800-903 Brazil
| | - Andrew A. Meharg
- Institute for Global Food Security, School of Biological Sciences, Queen’s University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL UK
| | - Caroline Meharg
- Institute for Global Food Security, School of Biological Sciences, Queen’s University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL UK
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O’Donnell R, Ralphs K, Grolleau M, Manyar H, Artioli N. Doping Manganese Oxides with Ceria and Ceria Zirconia Using a One-Pot Sol–Gel Method for Low Temperature Diesel Oxidation Catalysts. Top Catal 2020. [DOI: 10.1007/s11244-020-01250-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AbstractOctahedral molecular sieves (OMS-2) are an interesting form of manganese oxide with a 2 × 2 edge sharing tunnel structure and a cation positioned inside. Cryptomelane is an OMS-2 material with K+ cations within the crystalline tunnel and has been widely used in catalytic oxidation reactions, due to a mixed valency of Mn3+ and Mn4+ cations. Cryptomelane (K-OMS-2) can be modified by structural incorporation of various dopants and tunnel cations which can enhance the catalytic activity of the material. It also offers to be a promising alternative material for the low temperature emission control of combustion vehicles; particularly during cold start and low temperature conditions of diesel vehicles. In this work we used a one-pot sol–gel route to synthesize a range of manganese oxide based supports doped with Ce and CeZrO2, as alternative low temperature diesel oxidation catalysts. We have investigated the combination of manganese, ceria and zirconia in mixed oxide catalyst supports. The synthesized samples were loaded with 1 wt% Pt and their activity in the oxidation reactions of CO and C3H6, were compared with a commercial diesel oxidation catalyst with the same metal loading. The reductions in CO and C3H6 oxidation temperature T50 of 109 K and 81 K respectively was achieved compared to a commercial diesel oxidation catalyst.
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Ralphs K, McCourt É, Ormandy C, Carneiro de Souza TA, Nockemann P, Jacquemin J, Manyar HG. Cover Picture: Highly Selective Reduction of
α, β
‐Unsaturated Aldehydes and Ketones under Ambient Conditions using Tetraalkylphosphonium‐based Ionic Liquids (42/2018). ChemistrySelect 2018. [DOI: 10.1002/slct.201803491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Kathryn Ralphs
- School of Chemistry and Chemical EngineeringQueen's University Belfast David Keir Building Stranmillis Road Belfast BT9 5AG, Northern Ireland UK
| | - Éadaoin McCourt
- School of Chemistry and Chemical EngineeringQueen's University Belfast David Keir Building Stranmillis Road Belfast BT9 5AG, Northern Ireland UK
| | - Christopher Ormandy
- School of Chemistry and Chemical EngineeringQueen's University Belfast David Keir Building Stranmillis Road Belfast BT9 5AG, Northern Ireland UK
| | - Thiago A. Carneiro de Souza
- School of Chemistry and Chemical EngineeringQueen's University Belfast David Keir Building Stranmillis Road Belfast BT9 5AG, Northern Ireland UK
| | - Peter Nockemann
- School of Chemistry and Chemical EngineeringQueen's University Belfast David Keir Building Stranmillis Road Belfast BT9 5AG, Northern Ireland UK
| | - Johan Jacquemin
- School of Chemistry and Chemical EngineeringQueen's University Belfast David Keir Building Stranmillis Road Belfast BT9 5AG, Northern Ireland UK
- Université François RabelaisLaboratoire PCM2E Parc de Grandmont 37200 Tours France
| | - Haresh G. Manyar
- School of Chemistry and Chemical EngineeringQueen's University Belfast David Keir Building Stranmillis Road Belfast BT9 5AG, Northern Ireland UK
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7
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Pavel OD, Podolean I, Parvulescu VI, Taylor SFR, Manyar HG, Ralphs K, Goodrich P, Hardacre C. Impact of SCILL catalysts for the S-S coupling of thiols to disulfides. Faraday Discuss 2018; 206:535-547. [PMID: 28930329 DOI: 10.1039/c7fd00159b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This study reports the behaviour of SCILL based catalysts in the oxidative S-S coupling of aliphatic and aromatic thiols, namely 1-butanethiol and thiophenol, to dibutyl disulfide and diphenyl disulfide. A range of ionic liquids (1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide) and metal supported catalysts (5% Pt/SiO2; 5% Ru/SiO2; 5% Ru/C; 5% Pt/OMS-2) were used to prepare the SCILL catalysts and all were found to be active for the reaction following the trend 5% Pt-OMS-2 > 5% Pt/SiO2 > 5% Ru/C > 5% Ru/SiO2. The presence of SCILL catalysts afforded high selectivity to the disulfide, and the activity of the SCILL catalyst was dependent on the ionic liquid used. A significant increase in the stability of all the supported metal catalysts was found in the presence of the ionic liquid, and there was no change in the selectivity towards disulfides. This demonstrated that the ionic liquids protect the active sites of the catalyst against sulfation, thus providing more stable and active catalysts.
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Affiliation(s)
- Octavian D Pavel
- University of Bucharest, Faculty of Chemistry, Department of Organic Chemistry, Biochemistry and Catalysis, 030018, Bucharest, Romania.
| | - Iunia Podolean
- University of Bucharest, Faculty of Chemistry, Department of Organic Chemistry, Biochemistry and Catalysis, 030018, Bucharest, Romania.
| | - Vasile I Parvulescu
- University of Bucharest, Faculty of Chemistry, Department of Organic Chemistry, Biochemistry and Catalysis, 030018, Bucharest, Romania.
| | - S F Rebecca Taylor
- The University of Manchester, School of Chemical Engineering & Analytical Science, Manchester, UK
| | - Haresh G Manyar
- Queen's University Belfast, The QUILL Centre/School of Chemistry and Chemical Engineering, Belfast, Northern Ireland, UK.
| | - Kathryn Ralphs
- Queen's University Belfast, The QUILL Centre/School of Chemistry and Chemical Engineering, Belfast, Northern Ireland, UK.
| | - Peter Goodrich
- Queen's University Belfast, The QUILL Centre/School of Chemistry and Chemical Engineering, Belfast, Northern Ireland, UK.
| | - Christopher Hardacre
- Queen's University Belfast, The QUILL Centre/School of Chemistry and Chemical Engineering, Belfast, Northern Ireland, UK. and The University of Manchester, School of Chemical Engineering & Analytical Science, Manchester, UK
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Ralphs K, D'Agostino C, Burch R, Chansai S, Gladden LF, Hardacre C, James SL, Mitchell J, Taylor SFR. Assessing the surface modifications following the mechanochemical preparation of a Ag/Al2O3 selective catalytic reduction catalyst. Catal Sci Technol 2014. [DOI: 10.1039/c3cy00945a] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Surface modifications of Ag catalysts prepared using mechanochemistry and wet-impregnation.
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Affiliation(s)
- Kathryn Ralphs
- Centre for the Theory and Application of Catalysis
- CenTACat
- School of Chemistry and Chemical Engineering
- Queen's University
- Belfast, UK
| | - Carmine D'Agostino
- Department of Chemical Engineering and Biotechnology
- University of Cambridge
- Pembroke Street
- Cambridge CB2 3RA, UK
| | - Robbie Burch
- Centre for the Theory and Application of Catalysis
- CenTACat
- School of Chemistry and Chemical Engineering
- Queen's University
- Belfast, UK
| | - Sarayute Chansai
- Centre for the Theory and Application of Catalysis
- CenTACat
- School of Chemistry and Chemical Engineering
- Queen's University
- Belfast, UK
| | - Lynn F. Gladden
- Department of Chemical Engineering and Biotechnology
- University of Cambridge
- Pembroke Street
- Cambridge CB2 3RA, UK
| | - Christopher Hardacre
- Centre for the Theory and Application of Catalysis
- CenTACat
- School of Chemistry and Chemical Engineering
- Queen's University
- Belfast, UK
| | - Stuart L. James
- Centre for the Theory and Application of Catalysis
- CenTACat
- School of Chemistry and Chemical Engineering
- Queen's University
- Belfast, UK
| | - Jonathan Mitchell
- Department of Chemical Engineering and Biotechnology
- University of Cambridge
- Pembroke Street
- Cambridge CB2 3RA, UK
| | - Sarah F. R. Taylor
- Centre for the Theory and Application of Catalysis
- CenTACat
- School of Chemistry and Chemical Engineering
- Queen's University
- Belfast, UK
| |
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