OICC Press Progress in Biomaterials 2194-0517 10 4 (December 2021) 2021 11 06 Correction to: Injectable hyaluronic acid-based antibacterial hydrogel adorned with biogenically synthesized AgNPs-decorated multi-walled carbon nanotubes 10.1007/s40204-021-00170-7 EN Pooyan Makvandi Istituto Italiano di Tecnologia, Centre for Materials Interface, viale Rinaldo Piaggio 34, 56025, Pontedera, Pisa, Italy Milad Ashrafizadeh Department of Basic Science, Faculty of Veterinary Medicine, University of Tabriz, 51666-16471, Tabriz, Iran Matineh Ghomi Chemistry Department, Faculty of Science, Shahid Chamran University of Ahvaz, 61537-53843, Ahvaz, Iran Masoud Najafi Medical Technology Research Center, Institute of Health Technology, Kermanshah University of Medical Sciences, 6715847141, Kermanshah, Iran Hamid Heydari Sheikh Hossein Department of Biotechnology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran Ali Zarrabi Sabanci University Nanotechnology Research and Application Center (SUNUM), 34956, Tuzla, Istanbul, Turkey Virgilio Mattoli Istituto Italiano di Tecnologia, Centre for Materials Interface, viale Rinaldo Piaggio 34, 56025, Pontedera, Pisa, Italy Rajender S. Varma Regional Centre of Advanced Technologies and Materials, Palacky University, Slechtitelu 27, 783 71, Olomouc, Czech Republic Journal Article 2021 11 06 Correction to: Progress in Biomaterials (2021) 10:77–89 https://doi.org/10.1007/s40204-021-00155-6   The authors found that the TEM image of AgNPs (Fig. 4a) is sent wrongly  by the institute that took the TEM image. Even though the TEM images of pure AgNPs (in comparison with Ag-adorned CNTs) were not determinative and it does not affect the other results in this study, as responsibility of the authors to report precise and correct data, a new image (by TEM, Zeiss-EM10C-80 KV, Germany) was taken and now replaced in Fig. 4a. It is worth mentioning that other data and images in Fig. 4 are not altered. The authors do apologize for this inconvenience.