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

1. “Whither Magnetic Hyperthermia? A Tentative Roadmap”
Rubia-Rodríguez, I.; Santana-Otero, A.; Spassov, S.; Tombácz, E.; Johansson, C.; De La Presa, P.; Teran, F.J.; Morales, M.d.P.; Veintemillas-Verdaguer, S.; Thanh, N.T.K.; Besenhard, M.O.; Wilhelm, C.; Gazeau, F.; Harmer, Q.; Mayes, E.; Manshian, B.B.; Soenen, S.J.; Gu, Y.; Millán, Á.; Efthimiadou, E.K.; Gaudet, J.; Goodwill, P.; Mansfield, J.; Steinhoff, U.; Wells, J.; Wiekhorst, F.; Ortega, D.
Materials 2021, 14(4), 706. https://doi.org/10.3390/ma14040706
Full text available online: https://www.mdpi.com/1996-1944/14/4/706 

2. “Charge Carrier Processes and Optical Properties in TiO₂ and TiO₂-Based Heterojunction Photocatalysts: A Review”
Lettieri, S.; Pavone, M.; Fioravanti, A.; Santamaria Amato, L.; Maddalena, P.
Materials 2021, 14(7), 1645. https://doi.org/10.3390/ma14071645
Full text available online: https://www.mdpi.com/1996-1944/14/7/1645 

3. “Effect of UV Irradiation and TiO₂-Photocatalysis on Airborne Bacteria and Viruses: An Overview”
Bono, N.; Ponti, F.; Punta, C.; Candiani, G.
Materials 2021, 14(5), 1075. https://doi.org/10.3390/ma14051075
Full text available online: https://www.mdpi.com/1996-1944/14/5/1075 

4. “Polymer-Coated Magnetite Nanoparticles for Protein Immobilization”
Mylkie, K.; Nowak, P.; Rybczynski, P.; Ziegler-Borowska, M.
Materials 2021, 14(2), 248. https://doi.org/10.3390/ma14020248
Full text available online: https://www.mdpi.com/1996-1944/14/2/248 

5. “The Effects of Various Concentrations of NaOH on the Inter-Particle Gelation of a Fly Ash Geopolymer Aggregate”
Abdullah, A.; Hussin, K.; Abdullah, M.M.A.B.; Yahya, Z.; Sochacki, W.; Razak, R.A.; Błoch, K.; Fansuri, H.
Materials 2021, 14(5), 1111. https://doi.org/10.3390/ma14051111
Full text available online: https://www.mdpi.com/1996-1944/14/5/1111 

6. “Utilization of Eco-Friendly Waste Generated Nanomaterials in Water-Based Drilling Fluids; State of the Art Review”
Ikram, R.; Mohamed Jan, B.; Sidek, A.; Kenanakis, G.
Materials 2021, 14(15), 4171. https://doi.org/10.3390/ma14154171
Full text available online: https://www.mdpi.com/1996-1944/14/15/4171 

7. “Formation, Structure and Magnetic Properties of MFe₂O₄@SiO₂ (M = Co, Mn, Zn, Ni, Cu) Nanocomposites”
Dippong, T.; Levei, E.A.; Cadar, O.
Materials 2021, 14(5), 1139. https://doi.org/10.3390/ma14051139
Full text available online: https://www.mdpi.com/1996-1944/14/5/1139 

8. “Filtration Materials Modified with 2D Nanocomposites—A New Perspective for Point-of-Use Water Treatment”
Jakubczak, M.; Karwowska, E.; Rozmysłowska-Wojciechowska, A.; Petrus, M.; Woźniak, J.; Mitrzak, J.; Jastrzębska, A.M.
Materials 2021, 14(1), 182. https://doi.org/10.3390/ma14010182
Full text available online: https://www.mdpi.com/1996-1944/14/1/182 

9. “A Highly Sensitive Room Temperature CO₂ Gas Sensor Based on SnO₂-rGO Hybrid Composite”
Lee, Z.Y.; Hawari, H.F.b.; Djaswadi, G.W.b.; Kamarudin, K.
Materials 2021, 14(3), 522. https://doi.org/10.3390/ma14030522
Full text available online: https://www.mdpi.com/1996-1944/14/3/522 

10. “Microstructure and Mechanical Properties of Alumina Composites with Addition of Structurally Modified 2D Ti₃C₂ (MXene) Phase”
Cygan, T.; Wozniak, J.; Petrus, M.; Lachowski, A.; Pawlak, W.; Adamczyk-Cieślak, B.; Jastrzębska, A.; Rozmysłowska-Wojciechowska, A.; Wojciechowski, T.; Ziemkowska, W.; Olszyna, A.
Materials 2021, 14(4), 829. https://doi.org/10.3390/ma14040829
Full text available online: https://www.mdpi.com/1996-1944/14/4/829