DataVXACS Applied Materials & InterfacesPaper
journal article·2024-07-31

Electrical Responsive Coating with a Multilayered TiO2–SnO2–RuO2 Heterostructure on Ti for Controlling Antibacterial Ability and Improving Osseointegration

Rui Zhou, Yifei Liu, Ming Li, Jianyun Cao, Jiahui Cheng, Daqing Wei, Baoqiang Li, Yaming Wang, Dechang Jia, Bailing Jiang, Ruslan Z. Valiev, Yu Zhou

ACS Applied Materials & Interfaces· Volume 16· Issue 30
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Source abstract

Abstract

The bacterial infection and poor osseointegration of Ti implants could significantly compromise their applications in bone repair and replacement. Based on the carrier separation ability of the heterojunction and the redox reaction of pseudocapacitive metal oxides, we report an electrically responsive TiO 2 –SnO 2 –RuO 2 coating with a multilayered heterostructure on a Ti implant. Owing to the band gap structure of the TiO 2 –SnO 2 –RuO 2 coating, electron carriers are easily enriched at the coating surface, enabling a response to the endogenous electrical stimulation of the bone. With the formation of SnO 2 –RuO 2 pseudocapacitance on the modified surface, the postcharging mode can significantly change the surface chemical state of the coating due to the redox reaction, enhancing the antibacterial ability and osteogenesis-related gene expression of the human bone marrow mesenchymal stem cells. Owing to the attraction for Ca 2+, only the negatively postcharged SnO 2 @RuO 2 can promote apatite deposition. The in vivo experiment reveals that the S–SnO 2 @RuO 2 -NP could effectively kill the bacteria colonized on the surface and promote osseointegration with the synostosis bonding interface. Thus, negatively charging the electrically responsive coating of TiO 2 –SnO 2 –RuO 2 is a good strategy to endow modified Ti implants with excellent antibacterial ability and osseointegration.
Source: openalex_inverted_index · Quality: baseline

Research context

BiomaterialsMaterials processing

OpenAlex topics: Bone Tissue Engineering Materials · Advanced Photocatalysis Techniques · Advanced Nanomaterials in Catalysis

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Materials Science and Engineering, Xi’an University of Technology, Xi’an 710048, PR China

State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710049, PR China

Honghui Hospital, Xi’an Jiaotong University, Xi’an 710054, PR China

Key Laboratory of LCR Materials and Devices of Yunnan Province, School of Materials and Energy, Yunnan University, Kunming 650500, PR China

The Second Affiliated Hospital of Xi’an Jiaotong University (Xibei Hospital), Xi’an 710004, PR China

Department of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150080, PR China

Laboratory of Dynamics and Extreme Characteristics of Promising Nanostructured Materials, Saint Petersburg State University, Saint Petersburg 199034, Russia

Institute of Physics of Advanced Materials, Ufa University of Science and Technology, Ufa 450076, Russia

Funding

Xi'an University of Technology · Harbin Institute of Technology · National Natural Science Foundation of China · Natural Science Foundation of Shaanxi Province · Xi'an Health Commission · Harbin research foundation of technological innovative talent in manufacturing · Mega-grant State Program

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