Photocatalytic Performance of Cementitious Composites Modified with Second-Generation Nano-TiO2 Dispersions: Influence of Composition and Granulation on NOx Purification Efficiency
Source abstract
Abstract
This study investigated the influence of the composition of photocatalytic dispersions made with second-generation nano-TiO2 on the air purification performance of photocatalytic cementitious composites. Nine mortar series were prepared, incorporating photocatalytic dispersions of variable content of nano-TiO2, dispersing agent (superplasticizer), and hydrophobic admixture. The total mass content of nano-TiO2 in investigated mortars was kept at the same level. For investigated composites, photocatalytic removal of NOx was evaluated under simulated laboratory conditions mimicking polish autumn/winter irradiation conditions. The results indicate that within the tested range of variability, the dispersion composition significantly influenced the granulation of the dispersed nano-TiO2 particles, which in turn affected the air purification performance of the composites. A predictive model was developed to account for environmental factors potentially influencing photocatalytic performance in urban environments. The model estimated that, depending on environmental conditions and photocatalytic dispersion composition, the composite’s photocatalytic layer could remove up to 1.067 g/m2 of NO2 per year in favorable environmental conditions. Photocatalytic cementitious composites can act as environmentally beneficial composites, contributing to carbon-negative construction practices and improving urban air quality. This highlights the dual benefits of offsetting embedded carbon emissions and enhancing air purification efficiency in sustainable urban infrastructure.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: TiO2 Photocatalysis and Solar Cells · Advanced Photocatalysis Techniques · Gas Sensing Nanomaterials and Sensors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Faculty of Civil Engineering, Warsaw University of Technology, 00-637 Warsaw, Poland
Funding
NCBiR (National Centre for Research and Development)
References (60)
Show source-provided references
1. Photocatalytic concrete for NOx degradation: Influence factors and durability10.1016/j.conbuildmat.2021.123835 ↗
2. A case of familial cardiac amyloidosis10.4070/kcj.2004.34.5.520 ↗
3. An exploratory study on the association between air pollution and health problems (ICD-10) with an emphasis on respiratory diseases
4. NOx photocatalytic degradation employing concrete pavement containing titanium dioxide10.1016/j.apcatb.2010.01.002 ↗
5. Actual NOx and SOx removal rates in the atmospheric environment of concrete permeable blocks containing TiO2 powders, coconut shell powders, and zeolite beads10.1016/j.conbuildmat.2023.133032 ↗
6. EEA (2023). Harm to Human Health from Air Pollution in Europe: Burden of Disease 2023. ETC HE Rep., 7, 104.
7. Experimental study of the NO and NO2 degradation by photocatalytically active concrete10.1016/j.cattod.2010.09.028 ↗
8. Controlling the levels of airborne pollen: Can heterogeneous photocatalysis help?10.1021/es402467x ↗
9. Kinetic study of the simultaneous removal of ibuprofen, carbamazepine, sulfamethoxazole, and diclofenac from water using biochar and activated carbon adsorption, and TiO2 photocatalysis10.1016/j.dwt.2024.100817 ↗
10. Modification strategies of TiO2-based nanocatalysts for CO2 reduction through photocatalysis: A mini review10.1016/j.apcata.2024.120054 ↗
11. Impact of TiO2 powder type on hydration and photocatalytic NOx degradation in cement paste10.1016/j.rineng.2024.103187 ↗
12. The role of flow structures in the effective removal of NOx pollutants by a TiO2-based coating in a street canyon10.1016/j.jece.2023.109758 ↗
13. Photocatalytic degradation of nitrogen oxides (NOx) in a continuous-flow photoreactor with aluminosilicate microspheres coated with TiO2 thin films10.1016/j.cep.2024.109856 ↗
14. Chilmon, K., Kalinowski, M., and Jackiewicz-Rek, W. (2024). Effect of cement substitution with mineral fillers on NOx air-purification efficiency and photocatalytic reaction selectivity of nano-TiO2-modified cementitious composites. Materials, 17.10.3390/ma17235775 ↗
15. NOx photocatalytic degradation on active concrete road surface—From experiment to real-scale application10.1016/j.jclepro.2011.03.001 ↗
16. Removing NOx Pollution by Photocatalytic Building Materials in Real-Life: Evaluation of Existing Field Studies10.2174/2665976X02666210308151731 ↗
17. Photocatalytic roads: From lab tests to real scale applications10.1007/s12544-012-0085-6 ↗
18. Recent photocatalytic applications for air purification in Belgium10.3390/coatings4030553 ↗
19. Photocatalytic degradation of NOx in a pilot street canyon configuration using TiO2-mortar panels10.1007/s10661-007-9722-2 ↗
20. Photocatalytic performances in a city tunnel in Rome: NOx monitoring results10.1016/j.conbuildmat.2011.07.065 ↗
21. Full scale demonstration of air-purifying pavement10.1016/j.jhazmat.2013.02.012 ↗
22. Photocatalytic de-pollution in the Leopold II tunnel in Brussels: NOx abatement results10.1016/j.buildenv.2014.10.032 ↗
23. Sustainable photocatalytic asphalt pavements for mitigation of nitrogen oxide and sulfur dioxide vehicle emissions10.1061/(ASCE)MT.1943-5533.0000613 ↗
24. Field study of air purifying paving elements containing TiO210.1016/j.atmosenv.2015.02.025 ↗
25. Titanium oxide-based photocatalytic materials development and their role in the air pollutants degradation: Overview and forecast10.1016/j.envint.2019.01.015 ↗
26. NOx removal efficiency of urban photocatalytic pavements at pilot scale10.1016/j.scitotenv.2020.137459 ↗
27. In situ evaluation of the NOx removal efficiency of photocatalytic pavements: Statistical analysis of the relevance of exposure time and environmental variables10.1007/s11356-019-04322-y ↗
28. Indoor air purification using heterogeneous photocatalytic oxidation. Part I: Experimental study10.1016/j.apcatb.2009.09.004 ↗
29. Photocatalytic oxidation of nitrogen oxides using TiO2 loading on woven glass fabric10.1016/j.chemosphere.2006.04.071 ↗
30. Kalinowski, M., Woyciechowski, P., and Jackiewicz-Rek, W. (2023). Surface modification of photocatalytic cementitious composites with polyacrylic superabsorbent polymers (SAP). Mater. Proc., 13.10.3390/materproc2023013023 ↗
31. Chilmon, K., Kalinowski, M., and Jackiewicz-Rek, W. (2024). Influence of coarse aggregate exposure on air purification efficiency in photocatalytic cement composites. Buildings, 14.10.3390/buildings14113639 ↗
32. Photocatalytic performance and its internal relationship with hydration and carbonation of photocatalytic concrete: A review10.1016/j.jobe.2024.110782 ↗
33. Enhanced photocatalytic decomposition of NO on portland cement concrete pavement using nano-TiO2 suspension10.1016/j.conbuildmat.2020.122135 ↗
34. Photocatalytic concretes—The interface between photocatalysis and cement chemistry10.1016/j.cemconres.2016.03.007 ↗
35. Photocatalytic activity of TiO2–SiO2 nanocomposites applied to buildings: Influence of particle size and loading10.1016/j.apcatb.2013.01.021 ↗
36. Kępniak, M. (2019). Ocena Przydatności Odpadu z Odpylania Kruszywa jako Składnika Betonu Cementowego. [Ph.D. Thesis, Oficyna Wydawnicza Politechniki Warszawskiej].
37. Kalinowski, M., Chilmon, K., Bogacki, J., and Woyciechowski, P. (2024). Organic and inorganic modifications to increase the efficiency in immobilization of heavy metal (Zn) in cementitious composites—The impact of cement matrix pore network characteristics. Materials, 17.10.3390/ma17215281 ↗
38. The role of nano-TiO2 on the mechanical properties and hydration behavior of C2S, C3S and C4A3S−10.1016/j.conbuildmat.2023.131558 ↗
39. Witkowski, H., Jarosławski, J., Szkop, A., Chilmon, K., Kalinowski, M., and Jackiewicz-Rek, W. (2024). The Potential Risk of Nanoparticulate Release from Photocatalytic Pavement Concrete Surface Due to a Simulated Abrasion Load—An Experimental Study. Materials, 17.10.3390/ma17123022 ↗
40. Pigmentary TiO2: A challenge for its use as photocatalyst in NOx air purification10.1016/j.cej.2014.03.078 ↗
41. Upcycling of waste concrete powder into a functionalized host for nano-TiO2 photocatalyst: Binding mechanism and enhanced photocatalytic efficiency10.1016/j.jclepro.2022.132918 ↗
42. (2011). Cement—Part 1: Composition, Specifications and Conformity Criteria for Common Cements (Standard No. EN 197-1:2011).
43. (2016). Methods of Testing Cement—Part 1: Determination of Strength (Standard No. EN 196-1:2016).
44. (2016). Methods of Testing Cement—Part 3: Determination of Setting Times and Soundness (Standard No. EN 196-3:2016).
45. Kalinowski, M., Chilmon, K., Jackiewicz-Rek, W., and Rakowski, B. (2023). The Influence of Selected Material Variables of Photocatalytic Cementitious Composites on the Self-Cleaning Properties and Air Purification Efficiency from NOx Pollutants. Sustainability, 15.10.3390/su15010853 ↗
46. (2002). Mixing Water for Concrete—Specification for Sampling, Testing and Assessing the Suitability of Water, Including Water Recovered from Processes in the Concrete Industry, as Mixing Water for Concrete (Standard No. EN 1008:2002).
47. (2012). Admixtures for Concrete, Mortar and Grout—Part 2: Concrete Admixtures—Definitions, Requirements, Conformity, Marking and Labelling (Standard No. EN 934-2:2009+A1:2012).
48. Witkowski, H., Jackiewicz-Rek, W., Jarosławski, J., Chilmon, K., and Szkop, A. (2022). Ozone formation during photocatalytic oxidation of nitric oxides under UV irradiation with the use of commercial TiO2 photocatalytic powders. Materials, 15.10.3390/ma15175905 ↗
49. (2016). Fine Ceramics (Advanced Ceramics, Advanced Technical Ceramics)—Test Method for Air-Purification Performance of Semiconducting Photocatalytic Materials (Standard No. ISO 22197-1:2016).
50. Carbon-modified TiO2 as a promising and efficient admixture for cementitious composites: A comprehensive study of photocatalytic, mechanical and structural properties10.1016/j.jobe.2023.107747 ↗
51. Photocatalytic NOx abatement and self-cleaning performance of cementitious composites with g-C3N4 nanosheets under visible light10.1016/j.conbuildmat.2019.07.189 ↗
52. Effect of TiO2 and fly ash on photocatalytic NOx abatement of engineered cementitious composites10.1016/j.conbuildmat.2019.117559 ↗
53. Carbonation of photocatalytic aluminosilicate cement composites: Evolution of self-cleaning and radiative cooling properties10.1016/j.cemconcomp.2024.105626 ↗
54. Kalinowski, M., Chilmon, K., and Jackiewicz-Rek, W. (2024). Carbon-Negative Nano-TiO2-Modified Photocatalytic Cementitious Composites: Removal of Airborne Pollutants (NOx and O3) and Its Impact on CO2 Footprint. Coatings, 14.10.3390/coatings14121607 ↗
55. Investigating size effect of anatase phase nano TiO2 on the property of cement-based composites10.1088/2053-1591/aad4e3 ↗
56. Incorporation of titanium dioxide nanoparticles in mortars—Influence of microstructure in the hardened state properties and photocatalytic activity10.1016/j.cemconres.2012.09.007 ↗
57. Effects of nano-TiO2, nano-Al2O3, and nano-Fe2O3 on rheology, mechanical and durability properties of self-consolidating concrete (SCC): An experimental study10.1016/j.conbuildmat.2020.118444 ↗
58. Mechanical properties and microstructure of micro-and nano-additives-based modified concrete composites: A sustainable solution10.1007/s40030-019-00411-w ↗
59. Hydration mechanism and photocatalytic antibacterial performance of cement-based composites modified by hydrophilic nano-TiO2 particles10.1016/j.conbuildmat.2024.135538 ↗
60. Role of Nanotechnology in Photocatalysis Application10.2174/1872210516666220304162429 ↗