Compatibility and Photocatalytic Capacity of the Novel Core@shell Nanospheres in Cementitious Composites
Abstract
:1. Introduction
2. Results and Discussion
2.1. The Effect of TiO2@CoAl-LDH on Phase Development in Hardened Cement Paste
2.2. The Effect of Tio2@Coal-LDH on the Microscopic Strength of Cementitious Composites
2.3. The Effect of TiO2@CoAl-LDH on Surface Microscopic Structural Properties of Cementitious Composites
2.4. Photocatalytic Activity of the Cementitious Composites Containing Tio2@Coal-LDH
2.5. Proposed Mechanisms
3. Materials and Methods
3.1. Materials
3.2. Sample Preparation
3.2.1. Preparation of Core@Shell Nanospheres and Suspension
3.2.2. Preparation of the Cementitious Composites
3.3. Characterization and Measurement
3.3.1. Surface Properties and Microstructural Examination
3.3.2. Microscopic Strength
3.3.3. Photocatalytic Selfcleaning Performance
3.3.4. Durability of the Photocatalytic Coatings under the Wear Test
4. Conclusions
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Mortar System | Ra(μm) | Hv (Pa) | θ (°) |
---|---|---|---|
CM-R | 4.41 | 216.1 | 55.7 ± 2.4 |
CM-S | 3.22 | 271.9 | 28.4 ± 2.1 |
CM-C1 | 4.18 | 221.9 | 51.1 ± 1.1 |
CM-C2 | 3.74 | 217.3 | 44.6 ± 1.8 |
CM-C3 | 3.63 | 219.8 | 39.4 ± 0.9 |
Mortar System | After 120 min Irradiation | ||
---|---|---|---|
Before Wearing (%) | After Wearing (%) | Decrement (%) | |
CM-S | 65.6 ± 2.6% | 70.8 ± 2.1% | −7.9 ± 2.3% |
CM-C1 | 69.8 ± 3.1% | 32.1 ± 2.7% | 54.0 ± 2.9% |
CM-C2 | 95.1 ± 1.7% | 52.9 ± 1.3% | 44.4 ± 1.5% |
CM-C3 | 90.0 ± 2.8% | 77.4 ± 2.7% | 14.0 ± 2.7% |
Oxides | CaO | SiO2 | Al2O3 | Fe2O3 | MgO | SO3 | TiO2 | Others |
---|---|---|---|---|---|---|---|---|
Wt.% | 56.26 | 26.97 | 4.49 | 4.08 | 3.22 | 3.47 | 0.37 | 1.14 |
Materials | Surface Area (m2/g) | ||
---|---|---|---|
BET | t-Plot Micropore | t-Plot External | |
TiO2 | 36.82 | 5.36 | 42.61 |
TiO2@CoAl-LDH | 230.67 | 15.41 | 235.84 |
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Xu, J.; Yang, Z.; Chen, S.; Wang, W.; Zhang, Y. Compatibility and Photocatalytic Capacity of the Novel Core@shell Nanospheres in Cementitious Composites. Catalysts 2022, 12, 1574. https://doi.org/10.3390/catal12121574
Xu J, Yang Z, Chen S, Wang W, Zhang Y. Compatibility and Photocatalytic Capacity of the Novel Core@shell Nanospheres in Cementitious Composites. Catalysts. 2022; 12(12):1574. https://doi.org/10.3390/catal12121574
Chicago/Turabian StyleXu, Jiankun, Zhengxian Yang, Shanghong Chen, Wencheng Wang, and Yong Zhang. 2022. "Compatibility and Photocatalytic Capacity of the Novel Core@shell Nanospheres in Cementitious Composites" Catalysts 12, no. 12: 1574. https://doi.org/10.3390/catal12121574