The following are the 2021 top 10 cited papers from the Section “Porous Materials” of Materials (ISSN: 1996-1944):

1. “Idealized 3D Auxetic Mechanical Metamaterial: An Analytical, Numerical, and Experimental Study”
Ghavidelnia, N.; Bodaghi, M.; Hedayati, R.
Materials 2021, 14(4), 993. https://doi.org/10.3390/ma14040993
Full text available online: https://www.mdpi.com/1996-1944/14/4/993

2. “Polyurethane Foams for Domestic Sewage Treatment”
Dacewicz, E.; Grzybowska-Pietras, J.
Materials 2021, 14(4), 933. https://doi.org/10.3390/ma14040933
Full text available online: https://www.mdpi.com/1996-1944/14/4/933

3. “Porous Alumina Films Fabricated by Reduced Temperature Sulfuric Acid Anodizing: Morphology, Composition and Volumetric Growth”
Poznyak, A.; Pligovka, A.; Laryn, T.; Salerno, M.
Materials 2021, 14(4), 767. https://doi.org/10.3390/ma14040767
Full text available online: https://www.mdpi.com/1996-1944/14/4/767

4. “Adsorptive Removal of Phosphate from Aqueous Solutions Using Low-Cost Volcanic Rocks: Kinetics and Equilibrium Approaches”
Mekonnen, D.T.; Alemayehu, E.; Lennartz, B.
Materials 2021, 14(5), 1312. https://doi.org/10.3390/ma14051312
Full text available online: https://www.mdpi.com/1996-1944/14/5/1312

5. “Nitrogen-Doped Hierarchical Porous Activated Carbon Derived from Paddy for High-Performance Supercapacitors”
Yuan, Y.; Sun, Y.; Feng, Z.; Li, X.; Yi, R.; Sun, W.; Zhao, C.; Yang, L.
Materials 2021, 14(2), 318. https://doi.org/10.3390/ma14020318
Full text available online: https://www.mdpi.com/1996-1944/14/2/318

6. “Covalent Organic Frameworks: New Materials Platform for Photocatalytic Degradation of Aqueous Pollutants”
Qian, Y.; Ma, D.
Materials 2021, 14(19), 5600. https://doi.org/10.3390/ma14195600
Full text available online: https://www.mdpi.com/1996-1944/14/19/5600

7. “Effects of Physical and Chemical Modification of Sunflower Cake on Polyurethane Composite Foam Properties”
Strąkowska, A.; Członka, S.; Kairytė, A.; Strzelec, K.
Materials 2021, 14(6), 1414. https://doi.org/10.3390/ma14061414
Full text available online: https://www.mdpi.com/1996-1944/14/6/1414

8. “Vegetable Fillers and Rapeseed Oil-Based Polyol as Natural Raw Materials for the Production of Rigid Polyurethane Foams”
Leszczyńska, M.; Malewska, E.; Ryszkowska, J.; Kurańska, M.; Gloc, M.; Leszczyński, M.K.; Prociak, A.
Materials 2021, 14(7), 1772. https://doi.org/10.3390/ma14071772
Full text available online: https://www.mdpi.com/1996-1944/14/7/1772

9. “Casein/Apricot Filler in the Production of Flame-Retardant Polyurethane Composites”
Członka, S.; Kairytė, A.; Miedzińska, K.; Strąkowska, A.
Materials 2021, 14(13), 3620. https://doi.org/10.3390/ma14133620
Full text available online: https://www.mdpi.com/1996-1944/14/13/3620

10. “Dynamic Performance of Laminated High-Damping and High-Stiffness Composite Structure Composed of Metal Rubber and Silicone Rubber”
Zheng, X.; Ren, Z.; Shen, L.; Zhang, B.; Bai, H.
Materials 2021, 14(1), 187. https://doi.org/10.3390/ma14010187
Full text available online: https://www.mdpi.com/1996-1944/14/1/187