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Wang K, Tang Y, Yao K, Feng S, Wu B, Xiang L, Zhou X. Regulation of the upconversion effect to promote the removal of biofilms on a titanium surface via photoelectrons. J Mater Chem B 2024; 12:1798-1815. [PMID: 38230414 DOI: 10.1039/d3tb02542j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2024]
Abstract
Biofilms on public devices and medical instruments are harmful. Hence, it is of great importance to fabricate antibacterial surfaces. In this work, we target the preparation of an antibacterial surface excited by near-infrared light via the coating of rare earth nanoparticles (RE NPs) on a titanium surface. The upconverted luminescence is absorbed by gold nanoparticles (Au NPs, absorber) to produce hot electrons and reactive oxygen species to eliminate the biofilms. The key parameters in tuning the upconversion effect to eliminate the biofilms are systematically investigated, which include the ratios of the sensitizer, activator, and matrix in the RE NPs, or the absorber Au NPs. The regulated RE NPs exhibit an upconversion quantum yield of 3.5%. Under illumination, photogenerated electrons flow through the surface to bacteria, such as E. coli, which disrupt the breath chain and eventually lead to the death of bacteria. The mild increase of the local temperature has an impact on the elimination of biofilms on the surface to a certain degree as well. Such a configuration on the surface of titanium exhibits a high reproducibility on the removal of biofilms and is functional after the penetration of light using soft tissue. This work thus provides a novel direction in the application of upconversion materials to be used in the fabrication of antibacterial surfaces.
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Affiliation(s)
- Kai Wang
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China.
| | - Yufei Tang
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan, China.
| | - Keyi Yao
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China.
| | - Shuqi Feng
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan, China.
| | - Bingfeng Wu
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan, China.
| | - Lin Xiang
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan, China.
| | - Xuemei Zhou
- School of Chemical Engineering, Sichuan University, Chengdu 610065, China.
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2
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Wu L, Wu X, Wu L, Chen D, Zhang T, Zheng H, Xiao X. Polydopamine-Modified Titanium Dioxide Nanotube Arrays Doped with Calcium as a Sustained Drug Delivery System. ACS OMEGA 2024; 9:4949-4956. [PMID: 38313478 PMCID: PMC10831826 DOI: 10.1021/acsomega.3c08772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Revised: 12/19/2023] [Accepted: 01/08/2024] [Indexed: 02/06/2024]
Abstract
Titanium nanotube (TNT) arrays manufactured via electrochemical anodization have been widely used as local drug carriers due to their excellent biocompatibility and customizable nanotubular structures. However, the uncontrollable and abrupt drug release at the early stage decreases the drug release duration, leading to excessive drug concentration at the implantation site. In this study, a continuous drug delivery system based on TNTs was created. Initially, a basic ultrasound-assisted approach was utilized to deposit a polydopamine (PDA) coating onto TNTs to obtain PDA-modified TNTs. Next, TNTs-PDA were submerged in a calcium chloride solution to include Ca2+ through Ca2+ coordination between the PDA layer's catechol groups. Sodium alendronate (NaAL) was used as a model drug and loaded onto TNTs-PDA-Ca2+ by immersing them in an NaAL solution. In the final step, NaAL was covalently attached to TNTs-PDA-Ca2+ through coordination bonds with Ca2+. The samples underwent characterization through the use of various techniques, including field emission scanning electron microscopy, Fourier-transform infrared spectroscopy, X-ray diffraction patterning, X-ray photoelectron spectroscopy, and inductively coupled plasma emission spectrometry. The results indicated that the bioactivity of TNTs improved, and there was an enhancement in drug loading capacity and release performance due to modification with PDA and Ca2+. Furthermore, acidic conditions can cause significant drug release due to the cleavage of coordination bonds between the drug and Ca2+ ions. Thus, the aforementioned drug delivery system represents a potentially promising approach for achieving sustained and controllable drug release.
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Affiliation(s)
- Lizhong Wu
- Department
of Orthopedics, Fuzhou Second Hospital, Fuzhou, Fujian 350007, China
| | - Xing Wu
- Department
of Orthopedics, Fuzhou Second Hospital, Fuzhou, Fujian 350007, China
| | - Linzhao Wu
- Department
of Orthopedics, Fuzhou Second Hospital, Fuzhou, Fujian 350007, China
| | - Dongdong Chen
- Department
of Orthopedics, Fuzhou Second Hospital, Fuzhou, Fujian 350007, China
| | - Tao Zhang
- Department
of Orthopedics, Fuzhou Second Hospital, Fuzhou, Fujian 350007, China
| | - Hong Zheng
- Department
of Orthopedics, Fuzhou Second Hospital, Fuzhou, Fujian 350007, China
| | - Xiufeng Xiao
- Fujian
Provincial Key Laboratory of Advanced Materials Oriented Chemical
Engineering, College of Chemistry and Material Science, Fujian Normal University, Fuzhou, Fujian 350007, China
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3
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Jiang P, Zhang Y, Hu R, Shi B, Zhang L, Huang Q, Yang Y, Tang P, Lin C. Advanced surface engineering of titanium materials for biomedical applications: From static modification to dynamic responsive regulation. Bioact Mater 2023; 27:15-57. [PMID: 37035422 PMCID: PMC10074421 DOI: 10.1016/j.bioactmat.2023.03.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 03/10/2023] [Accepted: 03/10/2023] [Indexed: 03/29/2023] Open
Abstract
Titanium (Ti) and its alloys have been widely used as orthopedic implants, because of their favorable mechanical properties, corrosion resistance and biocompatibility. Despite their significant success in various clinical applications, the probability of failure, degradation and revision is undesirably high, especially for the patients with low bone density, insufficient quantity of bone or osteoporosis, which renders the studies on surface modification of Ti still active to further improve clinical results. It is discerned that surface physicochemical properties directly influence and even control the dynamic interaction that subsequently determines the success or rejection of orthopedic implants. Therefore, it is crucial to endow bulk materials with specific surface properties of high bioactivity that can be performed by surface modification to realize the osseointegration. This article first reviews surface characteristics of Ti materials and various conventional surface modification techniques involving mechanical, physical and chemical treatments based on the formation mechanism of the modified coatings. Such conventional methods are able to improve bioactivity of Ti implants, but the surfaces with static state cannot respond to the dynamic biological cascades from the living cells and tissues. Hence, beyond traditional static design, dynamic responsive avenues are then emerging. The dynamic stimuli sources for surface functionalization can originate from environmental triggers or physiological triggers. In short, this review surveys recent developments in the surface engineering of Ti materials, with a specific emphasis on advances in static to dynamic functionality, which provides perspectives for improving bioactivity and biocompatibility of Ti implants.
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Bhosale SR, Bhosale RR, Patil DN, Dhavale RP, Kolekar GB, Shimpale VB, Anbhule PV. Bioderived Mesoporous Carbon@Tungsten Oxide Nanocomposite as a Drug Carrier Vehicle of Doxorubicin for Potent Cancer Therapy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:11910-11924. [PMID: 37552874 DOI: 10.1021/acs.langmuir.3c01715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/10/2023]
Abstract
Scientists have investigated the possibility of employing nanomaterials as drug carriers. These nanomaterials can preserve their content and transport it to the target region in the body. In this investigation, we proposed a simple method for developing distinctive, bioderived nanostructures with mesoporous carbon nanoparticles impregnated with tungsten oxide (WO3). Prior to characterizing and encapsulating WO3 with bioderived mesoporous carbon, the anticancer drug doxorubicin (DOX) was added to the nanoparticles and examined loading and release study. The approaches for both nanoparticle production and characterization are discussed in detail. Colloidal qualities of the nanomaterial can be effectively preserved while also allowing transdermal transportation of nanoparticles into the body by forming them into green, reusable, and porous nanostructures. Although the theories of nanoparticles and bioderived carbon each have been studied separately, the combination presents a new route to applications connected to nanomedicine. Furthermore, this sample was used to study exotic biomedical applications, such as antioxidant, antimicrobial, and anticancer activities. The W-3 sample had lower antioxidant activity (44.01%) than the C@W sample (56.34%), which was the most potent. A high DOX entrapment effectiveness of 97% was eventually achieved by the C@W sample, compared to a pure WO3 entrapment efficiency of 91%. It was observed that the Carbon/WO3 composite (C@W) sample showed more efficacy because the mesoporous carbon composition with WO3 increases the average surface area and surface-active locations.
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Affiliation(s)
- Sneha R Bhosale
- Medicinal Chemistry Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur 416004, India
| | - Rakhee R Bhosale
- Analytical Chemistry and Material Science Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur 416004, India
| | - Devashree N Patil
- Department of Biotechnology, Shivaji University, Kolhapur 416004, India
| | - Rushikesh P Dhavale
- Department of Materials Science and Engineering, Yonsei University, Seoul 03722, South Korea
| | - Govind B Kolekar
- Fluorescence Spectroscopy Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur 416004, India
| | | | - Prashant V Anbhule
- Medicinal Chemistry Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur 416004, India
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5
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Fooladi S, Nematollahi MH, Iravani S. Nanophotocatalysts in biomedicine: Cancer therapeutic, tissue engineering, biosensing, and drug delivery applications. ENVIRONMENTAL RESEARCH 2023; 231:116287. [PMID: 37263475 DOI: 10.1016/j.envres.2023.116287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 05/28/2023] [Accepted: 05/30/2023] [Indexed: 06/03/2023]
Abstract
Photocatalysis can be considered as a green technology owing to its excellent potential for sustainability and fulfilling several principles of green chemistry. This process uses light radiation as the primary energy source, preventing or reducing the requirement for artificial light sources and exogenous catalytic entities. Photocatalysis has promising applications in biomedicine such as drug delivery, biosensing, tissue engineering, cancer therapeutics, etc. In targeted cancer therapeutics, photocatalysis can be employed in photodynamic therapy to form reactive oxygen species that damage cancerous cells' structure. Nanophotocatalysts can be used in targeted drug delivery, showing potential applications in nuclear-targeted drug delivery along with specific delivery of chemotherapeutics to cancer cells or tumor sites. On the other hand, in tissue engineering, nanophotocatalysts can be employed in designing scaffolds that promote cell growth and tissue regeneration. However, some important challenges pertaining to the performance of photocatalysis, large-scale production of nanophotocatalysts, optimization of reaction/synthesis conditions, long-term biosafety issues, stability, clinical translation, etc. still need further explorations. Herein, the most recent advancements pertaining to the biomedical applications of nanophotocatalysts are reflected, focusing on drug delivery, tissue engineering, biosensing, and cancer therapeutic potentials.
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Affiliation(s)
- Saba Fooladi
- Student Research Committee, Kerman University of Medical Sciences, Kerman, Iran
| | - Mohammad Hadi Nematollahi
- Applied Cellular and Molecular Research Center, Kerman University of Medical Sciences, Kerman, Iran; Department of Biochemistry, Faculty of Medicine, Kerman University of Medical Sciences, Kerman, Iran.
| | - Siavash Iravani
- Faculty of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, 81746-73461, Isfahan, Iran.
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Malheiros SS, Nagay BE, Bertolini MM, de Avila ED, Shibli JA, Souza JGS, Barão VAR. Biomaterial engineering surface to control polymicrobial dental implant-related infections: focusing on disease modulating factors and coatings development. Expert Rev Med Devices 2023:1-17. [PMID: 37228179 DOI: 10.1080/17434440.2023.2218547] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 04/29/2023] [Accepted: 05/23/2023] [Indexed: 05/27/2023]
Abstract
INTRODUCTION Peri-implantitis is the leading cause of dental implant loss and is initiated by a polymicrobial dysbiotic biofilm formation on the implant surface. The destruction of peri-implant tissue by the host immune response and the low effectiveness of surgical or non-surgical treatments highlight the need for new strategies to prevent, modulate and/or eliminate biofilm formation on the implant surface. Currently, several surface modifications have been proposed using biomolecules, ions, antimicrobial agents, and topography alterations. AREAS COVERED Initially, this review provides an overview of the etiopathogenesis and host- and material-dependent modulating factors of peri-implant disease. In addition, a critical discussion about the antimicrobial surface modification mechanisms and techniques employed to modify the titanium implant material is provided. Finally, we also considered the future perspectives on the development of antimicrobial surfaces to narrow the bridge between idea and product and favor the clinical application possibility. EXPERT OPINION Antimicrobial surface modifications have demonstrated effective results; however, there is no consensus about the best modification strategy and in-depth information on the safety and longevity of the antimicrobial effect. Modified surfaces display recurring challenges such as short-term effectiveness, the burst release of drugs, cytotoxicity, and lack of reusability. Stimulus-responsive surfaces seem to be a promising strategy for a controlled and precise antimicrobial effect, and future research should focus on this technology and study it from models that better mimic clinical conditions.
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Affiliation(s)
- Samuel S Malheiros
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, São Paulo 13414-903, Brazil
| | - Bruna E Nagay
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, São Paulo 13414-903, Brazil
| | - Martinna M Bertolini
- Department of Periodontics and Preventive Dentistry, School of Dental Medicine, University of Pittsburgh, Pittsburgh, PA 15106, USA
| | - Erica D de Avila
- Department of Dental Materials and Prosthodontics, School of Dentistry at Araçatuba, São Paulo State University (UNESP), Araçatuba, Sao Paulo 16015-050, Brazil
| | - Jamil A Shibli
- Dental Research Division, Guarulhos University, Guarulhos, São Paulo 07023-070, Brazil
| | - João Gabriel S Souza
- Dental Research Division, Guarulhos University, Guarulhos, São Paulo 07023-070, Brazil
- Dental Science School (Faculdade de Ciências Odontológicas - FCO), Montes Claros, Minas Gerais39401-303, Brazil
| | - Valentim A R Barão
- Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas (UNICAMP), Piracicaba, São Paulo 13414-903, Brazil
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7
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Qi X, Gan J, Zhao Z, Li N, Chen Y, Jin T. Chitosan Sponge/Cu-WO 3-x Composite for Photodynamic Therapy of Wound Infection. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:2631-2640. [PMID: 36749165 DOI: 10.1021/acs.langmuir.2c03071] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
One of the potential treatments for bacterial wound infections is photodynamic therapy. WO3-x semiconductor materials can generate reactive oxygen species when exposed to light, which can inactivate bacteria. In this work, we improved their photocatalytic performance by doping WO3-x with Cu. The wound dressing was prepared by loading Cu-WO3-x into a highly biocompatible chitosan sponge. The composite sponge dressing showed significant inactivation of Escherichia coli and Staphylococcus aureus, and in vitro toxicity assays on L929 cells demonstrated the biosafety of the dressing. Through in vivo wound healing trials, composite sponge dressings have been shown to accelerate wound healing, and this composite chitosan sponge can be possibly used for photodynamic therapy of bacterial wound infections.
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Affiliation(s)
- Xingrui Qi
- Guangzhou Institute of Chemistry, Chinese Academy of Sciences, 510650 Guangzhou, P. R. China
- University of Chinese Academy of Sciences, 100000 Beijing, P. R. China
| | - Jiamin Gan
- Guangzhou Institute of Chemistry, Chinese Academy of Sciences, 510650 Guangzhou, P. R. China
- University of Chinese Academy of Sciences, 100000 Beijing, P. R. China
| | - Zhidong Zhao
- Guangzhou Institute of Chemistry, Chinese Academy of Sciences, 510650 Guangzhou, P. R. China
- University of Chinese Academy of Sciences, 100000 Beijing, P. R. China
- Guizhou Police College, Guizhou 550005, China
| | - Nian Li
- Guangzhou Institute of Chemistry, Chinese Academy of Sciences, 510650 Guangzhou, P. R. China
- University of Chinese Academy of Sciences, 100000 Beijing, P. R. China
| | - Yufang Chen
- Guangzhou Institute of Chemistry, Chinese Academy of Sciences, 510650 Guangzhou, P. R. China
- University of Chinese Academy of Sciences, 100000 Beijing, P. R. China
- CAS Testing Technical Services (Guangzhou) Co. Ltd., 510650 Guangzhou, P. R. China
- CAS Engineering Laboratory for Special Fine Chemicals, Chinese Academy of Sciences, Guangzhou 510650, P. R. China
- Guangdong Provincial Key Laboratory of Organic Polymer Materials for Electronics, Guangzhou 510650, P. R. China
- West Center, Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Chongqing 400714, P. R. China
| | - Tao Jin
- Guangzhou Institute of Chemistry, Chinese Academy of Sciences, 510650 Guangzhou, P. R. China
- University of Chinese Academy of Sciences, 100000 Beijing, P. R. China
- CAS Testing Technical Services (Guangzhou) Co. Ltd., 510650 Guangzhou, P. R. China
- CAS Engineering Laboratory for Special Fine Chemicals, Chinese Academy of Sciences, Guangzhou 510650, P. R. China
- Guangdong Provincial Key Laboratory of Organic Polymer Materials for Electronics, Guangzhou 510650, P. R. China
- West Center, Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Chongqing 400714, P. R. China
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8
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Mo J, Chen X, Li M, Liu W, Zhao W, Lim LY, Tilley RD, Gooding JJ, Li Q. Upconversion Nanoparticle-Based Cell Membrane-Coated cRGD Peptide Bioorthogonally Labeled Nanoplatform for Glioblastoma Treatment. ACS APPLIED MATERIALS & INTERFACES 2022; 14:49454-49470. [PMID: 36300690 DOI: 10.1021/acsami.2c11284] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Glioblastoma is hard to be eradicated partly because of the obstructive blood-brain barrier (BBB) and the dynamic autophagy activities of glioblastoma. Here, hydroxychloroquine (HDX)-loaded yolk-shell upconversion nanoparticle (UCNP)@Zn0.5Cd0.5S nanoparticle coating with the cyclic Arg-Gly-Asp (cRGD)-grafted glioblastoma cell membrane for near-infrared (NIR)-triggered treatment of glioblastoma is prepared for the first time. UCNPs@Zn0.5Cd0.5S (abbreviated as YSN, yolk-shell nanoparticle) under NIR radiation will generate reactive oxygen species for imposing cytotoxicity. HDX, the only available autophagy inhibitor in clinical studies, can enhance cytotoxicity by preventing damaged organelles from being recycled. The cRGD-decorated cell membrane allowed the HDX-loaded nanoparticles to efficiently bypass the BBB and specifically target glioblastoma cells. Exceptional treatment efficacy of the NIR-triggered chemotherapy and photodynamic therapy was achieved in U87 cells and in the mouse glioblastoma model as well. Our results provided proof-of-concept evidence that HDX@YSN@CCM@cRGD could overcome the delivery barriers and achieve targeted treatment of glioblastoma.
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Affiliation(s)
- Jingxin Mo
- Guangxi Clinical Research Center for Neurological Diseases, The Affiliated Hospital of Guilin Medical University, Guilin 541001, China
- School of Chemistry and Australian Centre for NanoMedicine, University of New South Wales, Sydney, New South Wales 2052, Australia
- Laboratory of Neurology, The Affiliated Hospital of Guilin Medical University, Guilin 541001, China
| | - Xianjue Chen
- School of Environmental and Life Sciences, University of Newcastle, Callaghan, New South Wales 2308, Australia
| | - Meiying Li
- Guangxi Clinical Research Center for Neurological Diseases, The Affiliated Hospital of Guilin Medical University, Guilin 541001, China
- School of Pharmacy, Guilin Medical University, Guilin 541001, China
| | - Wenxu Liu
- Guangxi Clinical Research Center for Neurological Diseases, The Affiliated Hospital of Guilin Medical University, Guilin 541001, China
- School of Pharmacy, Guilin Medical University, Guilin 541001, China
| | - Wei Zhao
- Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-sen University, Guangzhou 510080, China
| | - Lee Yong Lim
- School of Allied Health, University of Western Australia, Perth, Western Australia 6009, Australia
| | - Richard D Tilley
- School of Chemistry and Australian Centre for NanoMedicine, University of New South Wales, Sydney, New South Wales 2052, Australia
| | - J Justin Gooding
- School of Chemistry and Australian Centre for NanoMedicine, University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Qinghua Li
- Guangxi Clinical Research Center for Neurological Diseases, The Affiliated Hospital of Guilin Medical University, Guilin 541001, China
- Department of Neurology, The Affiliated Hospital of Guilin Medical University, Guilin 541001, China
- Key Laboratory of Brain and Cognition of Guangxi Province, Guilin Medical University, Guilin 541001, China
- Guangxi Engineering Research Center for Digital Medicine and Clinical Translation, Guilin Medical University, Guilin 541001, China
- Guangxi Key Laboratory of Big Data Intelligent Cloud Management for Neurological Diseases, Guilin Medical University, Guilin 541001, China
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Xu J, Liang C, Gao Z, Song YY. Construction of nanoreactors on TiO2 nanotube arrays as a POCT device for sensitive colorimetric detection. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.107863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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10
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Xu J, Liang C, Gao W, Gao Z, Wu Z, Song YY. Photocatalysis engineered hydrophilic reactors on hydrophobic paper for the visual and colorimetric assay of alkaline phosphatase activity. Mikrochim Acta 2022; 189:343. [PMID: 35999293 DOI: 10.1007/s00604-022-05454-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 08/09/2022] [Indexed: 11/25/2022]
Abstract
Taking advantage of the intrinsic photocatalysis of TiO2, hydrophilic reactor arrays were lithographically patterned on a hydrophobic paper via a simple UV irradiation. As a proof-of-concept, alkaline phosphatase (ALP) was used as the model analyte for colorimetric analysis. As ALP can induce hydrolysis of pyrophosphate-Zn(II) framework, the released Zn2+ ions are subsequently coordinated with red-colored zincon to form blue-colored zincon-Zn(II) chelate complex, and these color differences were applied for further colorimetric assay. The sensing platform showed response to ALP ranging from 20 ~ 800 U L-1 with a detection limit of 3 U L-1, and the recoveries of ALP in serum samples were in the range 95.7 ~ 104.5% with relative standard deviations from 2.10 to 3.84%. Additionally, the distinct wettability features of the proposed sensing platform effectively prevent lateral fluid spread out of hydrophilic reactors, thus allowing not only the use of minimum amount of analyte but it has also a high potential for simultaneous quantification of multiple samples.
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Affiliation(s)
- Jingwen Xu
- College of Sciences, Northeastern University, Shenyang, 110004, China
| | - Chenchen Liang
- College of Sciences, Northeastern University, Shenyang, 110004, China
| | - Weina Gao
- College of Sciences, Northeastern University, Shenyang, 110004, China
| | - Zhida Gao
- College of Sciences, Northeastern University, Shenyang, 110004, China
| | - Zhiyong Wu
- College of Sciences, Northeastern University, Shenyang, 110004, China.
| | - Yan-Yan Song
- College of Sciences, Northeastern University, Shenyang, 110004, China.
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11
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Ciprofloxacin-Loaded Titanium Nanotubes Coated with Chitosan: A Promising Formulation with Sustained Release and Enhanced Antibacterial Properties. Pharmaceutics 2022; 14:pharmaceutics14071359. [PMID: 35890255 PMCID: PMC9316085 DOI: 10.3390/pharmaceutics14071359] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 06/21/2022] [Accepted: 06/22/2022] [Indexed: 11/17/2022] Open
Abstract
Due to their high entrapment efficiency, anodized titanium nanotubes (TiO2-NTs) are considered effective reservoirs for loading/releasing strong antibiotics whose systemic administration is associated with diverse and severe side-effects. In this study, TiO2-NTs were synthesized by anodic oxidation of titanium foils, and the effects of electrolyte percentage and viscosity on their dimensions were evaluated. It was found that as the water content increased from 15 to 30%, the wall thickness, length, and inner diameter of the NTs increase from 5.9 to 15.8 nm, 1.56 to 3.21 µm, and 59 to 84 nm, respectively. Ciprofloxacin, a highly potent antibiotic, was loaded into TiO2-NTs with a high encapsulation efficiency of 93%, followed by coating with different chitosan layers to achieve a sustained release profile. The prepared formulations were characterized by various techniques, such as scanning electron microscopy, differential scanning calorimetry, and contact measurement. In vitro release studies showed that the higher the chitosan layer count, the more sustained the release. Evaluation of antimicrobial activity of the formulation against two endodontic species from Peptostreptococcus and Fusobacterium revealed minimum inhibitory concentrations (MICs) of 1 µg/mL for the former and the latter. To summarize, this study demonstrated that TiO2-NTs are promising reservoirs for drug loading, and that the chitosan coating provides not only a sustained release profile, but also a synergistic antibacterial effect.
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12
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Liu S, Chen X, Yu M, Li J, Liu J, Xie Z, Gao F, Liu Y. Applications of Titanium Dioxide Nanostructure in Stomatology. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27123881. [PMID: 35745007 PMCID: PMC9229536 DOI: 10.3390/molecules27123881] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Revised: 06/09/2022] [Accepted: 06/14/2022] [Indexed: 11/16/2022]
Abstract
Breakthroughs in the field of nanotechnology, especially in nanochemistry and nanofabrication technologies, have been attracting much attention, and various nanomaterials have recently been developed for biomedical applications. Among these nanomaterials, nanoscale titanium dioxide (nano-TiO2) has been widely valued in stomatology due to the fact of its excellent biocompatibility, antibacterial activity, and photocatalytic activity as well as its potential use for applications such as dental implant surface modification, tissue engineering and regenerative medicine, drug delivery carrier, dental material additives, and oral tumor diagnosis and treatment. However, the biosafety of nano-TiO2 is controversial and has become a key constraint in the development of nano-TiO2 applications in stomatology. Therefore, in this review, we summarize recent research regarding the applications of nano-TiO2 in stomatology, with an emphasis on its performance characteristics in different fields, and evaluations of the biological security of nano-TiO2 applications. In addition, we discuss the challenges, prospects, and future research directions regarding applications of nano-TiO2 in stomatology that are significant and worthy of further exploration.
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Affiliation(s)
- Shuang Liu
- Department of Endodontics, Hospital of Stomatology, Jilin University, Changchun 130000, China; (S.L.); (X.C.); (M.Y.); (J.L.); (J.L.); (Z.X.)
| | - Xingzhu Chen
- Department of Endodontics, Hospital of Stomatology, Jilin University, Changchun 130000, China; (S.L.); (X.C.); (M.Y.); (J.L.); (J.L.); (Z.X.)
| | - Mingyue Yu
- Department of Endodontics, Hospital of Stomatology, Jilin University, Changchun 130000, China; (S.L.); (X.C.); (M.Y.); (J.L.); (J.L.); (Z.X.)
| | - Jianing Li
- Department of Endodontics, Hospital of Stomatology, Jilin University, Changchun 130000, China; (S.L.); (X.C.); (M.Y.); (J.L.); (J.L.); (Z.X.)
| | - Jinyao Liu
- Department of Endodontics, Hospital of Stomatology, Jilin University, Changchun 130000, China; (S.L.); (X.C.); (M.Y.); (J.L.); (J.L.); (Z.X.)
| | - Zunxuan Xie
- Department of Endodontics, Hospital of Stomatology, Jilin University, Changchun 130000, China; (S.L.); (X.C.); (M.Y.); (J.L.); (J.L.); (Z.X.)
| | - Fengxiang Gao
- Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130000, China
- Correspondence: (F.G.); (Y.L.); Tel.: +86-13756189633 (F.G.); +86-13756466950 (Y.L.)
| | - Yuyan Liu
- Department of Endodontics, Hospital of Stomatology, Jilin University, Changchun 130000, China; (S.L.); (X.C.); (M.Y.); (J.L.); (J.L.); (Z.X.)
- Correspondence: (F.G.); (Y.L.); Tel.: +86-13756189633 (F.G.); +86-13756466950 (Y.L.)
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13
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Xu Z, Jiang X. Osteogenic TiO2 composite nano-porous arrays: A favorable platform based on titanium alloys applied in artificial implants. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128301] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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14
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Garg P, Kaur B, Kaur G, Chaudhary GR. Design and applications of metallo-vesicular structures using inorganic-organic hybrids. Adv Colloid Interface Sci 2022; 302:102621. [PMID: 35276534 DOI: 10.1016/j.cis.2022.102621] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2021] [Revised: 02/10/2022] [Accepted: 02/23/2022] [Indexed: 11/01/2022]
Abstract
In advanced biomedical diagnosis, various supramolecular assemblies based on inorganic-organic hybrids have found great interest as functional materials. These assemblies describe a new field of metallovesicles where the introduction of metal ions enables the chemical manipulation of assemblies in terms of their structural stability, redox activity, and pH stability. Additionally, they mimic the elaborative architecture of natural liposomal assemblies and exhibit hierarchical morphologies, and promise novel functions. With the constant developments in this field, various supramolecular assemblies such as MCsomes, Polymersomes, and Metallosomes, etc. came into existence. These hybrid assemblies have been utilized for several applications such as drug delivery, MRI contrasting, DNA delivery, and catalytic activity. The key advantage of these assemblies is their ability to deliver therapeutics to specific locations due to their biomimetic properties and release their contents at the desired time. Hence, they provide a valuable platform for the treatment of a variety of diseases. Through the present article, we intend to provide insights into the latest developments made in this field. This modularity underscores the tremendous promise of supramolecular assemblies as an emerging interdisciplinary research branch at the interface of chemistry and biological sciences.
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Light-Excited Ag-Doped TiO 2-CoFe 2O 4 Heterojunction Applied to Toluene Gas Detection. NANOMATERIALS 2021; 11:nano11123261. [PMID: 34947609 PMCID: PMC8704540 DOI: 10.3390/nano11123261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 11/24/2021] [Accepted: 11/26/2021] [Indexed: 11/17/2022]
Abstract
(1) Background: Toluene gas is widely used in indoor decoration and industrial production, and it not only pollutes the environment but also poses serious health risks. (2) Methods: In this work, TiO2−CoFe2O4−Ag quaternary composite gas-sensing material was prepared using a hydrothermal method to detect toluene. (3) Results: The recombination of electron–hole pairs was suppressed, and the light absorption range was expanded after constructing a heterojunction and doping with Ag, according to ultraviolet–visible (UV–vis) diffuse reflectance spectra and photoluminescence spectroscopy. Moreover, in the detection range of toluene gas (3 ppm–50 ppm), the response value of TiO2−CoFe2O4−Ag increased from 2 to 15, which was much higher than that of TiO2−Ag (1.7) and CoFe2O4−Ag (1.7). In addition, the working temperature was reduced from 360 °C to 263 °C. Furthermore, its response/recovery time was 40 s/51 s, its limit of detection was as low as 10 ppb, and its response value to toluene gas was 3–7 times greater than that of other interfering gases under the same test conditions. In addition, the response value to 5 ppm toluene was increased from 3 to 5.5 with the UV wavelength of 395 nm–405 nm. (4) Conclusions: This is primarily due to charge flow caused by heterojunction construction, as well as metal sensitization and chemical sensitization of novel metal doping. This work is a good starting point for improving gas-sensing capabilities for the detection of toluene gas.
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16
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Gulati K, Scimeca JC, Ivanovski S, Verron E. Double-edged sword: Therapeutic efficacy versus toxicity evaluations of doped titanium implants. Drug Discov Today 2021; 26:2734-2742. [PMID: 34246772 DOI: 10.1016/j.drudis.2021.07.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 06/25/2021] [Accepted: 07/02/2021] [Indexed: 02/06/2023]
Abstract
Titanium-based orthopaedic/dental implants modified with various metal-doping strategies can enhance local therapy and bioactivity. Intentional or unintentional (because of loading and wear) release of metal ions/nanoparticles (NPs) from metal-doped implants can be therapeutic or cause adverse local tissue reactions, compromising long-term survival. Strategies to incorporate metals into implants, such as superficial or deep loading inside nano-engineered surfaces, including nanotubes, and the physiochemical characteristics of the released species significantly influence both their therapeutic and cytotoxic potential. In this review, we compare and contrast this 'double-edged sword' to arrive at an improved understanding of metal-doped implants to enable controlled therapy while minimising cytotoxicity concerns.
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Affiliation(s)
- Karan Gulati
- The University of Queensland, School of Dentistry, Herston, QLD 4006, Australia
| | | | - Sašo Ivanovski
- The University of Queensland, School of Dentistry, Herston, QLD 4006, Australia
| | - Elise Verron
- Université de Nantes, CNRS, UMR 6230, CEISAM, UFR Sciences et Techniques, 2, rue de la Houssinière, BP 92208, 44322 NANTES Cedex 3, France.
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17
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Shirazi-Fard S, Mohammadpour F, Zolghadr AR, Klein A. Encapsulation and Release of Doxorubicin from TiO 2 Nanotubes: Experiment, Density Functional Theory Calculations, and Molecular Dynamics Simulation. J Phys Chem B 2021; 125:5549-5558. [PMID: 34014667 DOI: 10.1021/acs.jpcb.1c02648] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Titanium dioxide (TiO2) nanotubes are attractive materials for drug-delivery systems because of their biocompatibility, chemical stability, and simple preparation. In this study, we loaded TiO2 nanotubes with anticancer drug doxorubicin (DOX) experimentally and in all-atom molecular dynamics (MD) simulations. The release of doxorubicin from the nanotubes was studied by high-performance liquid chromatography (HPLC) and confocal Raman spectroscopy, and drug-release profiles were evaluated under various conditions. The polyethylene glycol (PEG) coating and capping of the nanotubes led to a marked increase in the water contact angles from about 16 to 33° in keeping with reduced wettability. The capping retarded the release rate without decreasing the overall release amount. The MD simulations further show that the DOX molecule diffusion coefficients (Di) are in the order of 10-10 m2/s. The DOX molecules show a plethora of short- and long-range H-bonding interactions with TiO2 nanotube walls and water. Calculated radial distribution functions (RDFs) and combined radial/angular distribution functions (CDFs) allowed gauging the strength of these hydrogen bonds. The strength does not fully correlate with the pKa values of DOX atoms which we assign to the confinement of DOX and water in the tubes. The lifetimes of hydrogen bonds between the DOX atoms and water molecules are shorter than that of the DOX...TiO2 interactions, and DOX...DOX aggregation does not play an important role. These results suggest TiO2 nanotubes as promising candidates for controllable drug-delivery systems for DOX or similar antiproliferative molecules.
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Affiliation(s)
| | - Fatemeh Mohammadpour
- Department of Physics, Farhangian University, Tarbiat Moallem, Ave Niayesh Junction Farahzadi Blvd, Tehran 1939614464, Iran
| | | | - Axel Klein
- Department of Chemistry, Shiraz University, Shiraz 71946-84795, Iran.,Faculty of Mathematics and Natural Sciences, Department of Chemistry, Institute for Inorganic Chemistry, University of Cologne, Greinstrasse 6, D-50939 Köln, Germany
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18
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Ghimire A, Song J. Anti-Periprosthetic Infection Strategies: From Implant Surface Topographical Engineering to Smart Drug-Releasing Coatings. ACS APPLIED MATERIALS & INTERFACES 2021; 13:20921-20937. [PMID: 33914499 PMCID: PMC8130912 DOI: 10.1021/acsami.1c01389] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Despite advanced implant sterilization and aseptic surgical techniques, periprosthetic bacterial infection remains a major challenge for orthopedic and dental implants. Bacterial colonization/biofilm formation around implants and their invasion into the dense skeletal tissue matrices are difficult to treat and could lead to implant failure and osteomyelitis. These complications require major revision surgeries and extended antibiotic therapies that are associated with high treatment cost, morbidity, and even mortality. Effective preventative measures mitigating risks for implant-related infections are thus in dire need. This review focuses on recent developments of anti-periprosthetic infection strategies aimed at either reducing bacterial adhesion, colonization, and biofilm formation or killing bacteria directly in contact with and/or in the vicinity of implants. These goals are accomplished through antifouling, quorum-sensing interfering, or bactericidal implant surface topographical engineering or surface coatings through chemical modifications. Surface topographical engineering of lotus leaf mimicking super-hydrophobic antifouling features and cicada wing-mimicking, bacterium-piercing nanopillars are both presented. Conventional physical coating/passive release of bactericidal agents is contrasted with their covalent tethering to implant surfaces through either stable linkages or linkages labile to bacterial enzyme cleavage or environmental perturbations. Pros and cons of these emerging anti-periprosthetic infection approaches are discussed in terms of their safety, efficacy, and translational potentials.
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Affiliation(s)
- Ananta Ghimire
- Department of Orthopedics and Physical Rehabilitation, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Jie Song
- Department of Orthopedics and Physical Rehabilitation, University of Massachusetts Medical School, Worcester, Massachusetts, USA
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19
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Jayasree A, Ivanovski S, Gulati K. ON or OFF: Triggered therapies from anodized nano-engineered titanium implants. J Control Release 2021; 333:521-535. [DOI: 10.1016/j.jconrel.2021.03.020] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 03/18/2021] [Accepted: 03/19/2021] [Indexed: 12/13/2022]
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20
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Au nanorods decorated TiO2 nanobelts with enhanced full solar spectrum photocatalytic antibacterial activity and the sterilization file cabinet application. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2020.10.020] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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21
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Zhao C, Jian X, Zhang X, Guo J, Gao Z, Song YY. Rapid Capture and Photocatalytic Inactivation of Target Cells from Whole Blood by Rotating Janus Nanotubes. ACS APPLIED MATERIALS & INTERFACES 2021; 13:12972-12981. [PMID: 33689269 DOI: 10.1021/acsami.1c02042] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Effective isolation and removal of target tumor cells from patients' peripheral blood are of great importance to clinical prognosis and recovery. However, the extremely low quantity of target cells in peripheral blood becomes one of the challenges in this respect. Herein, we design and synthesize an innovative nanostructure based on magnetic TiO2 nanotubes with Pt nanoparticles' asymmetrical decoration for effectively capturing and inactivating target cells. Using CCRF-CEM as the model cell, the resulting nanotubes with accurate modification of recognition probes exhibit high selectivity and cell-isolation efficiency upon real blood samples. Particularly, the target cells are selectively captured at a low concentration with a recovery rate of 73.0 ± 11.5% at five cells per milliliter for whole blood samples. Consequently, benefitting from the remarkable photocatalytic activity of the Janus nanotubes, these isolated cells can be rapidly inactivated via light-emitting diode (LED) irradiation with an ignorable effect on normal cells. This work offers a new paradigm for high-efficient isolating/killing target cells from a complex medium.
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Affiliation(s)
- Chenxi Zhao
- College of Sciences, Northeastern University, Shenyang 110004, China
| | - Xiaoxia Jian
- College of Sciences, Northeastern University, Shenyang 110004, China
| | - Xi Zhang
- College of Sciences, Northeastern University, Shenyang 110004, China
| | - Junli Guo
- College of Sciences, Northeastern University, Shenyang 110004, China
| | - Zhida Gao
- College of Sciences, Northeastern University, Shenyang 110004, China
| | - Yan-Yan Song
- College of Sciences, Northeastern University, Shenyang 110004, China
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22
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Liu G, Xia H, Zhang W, Lang L, Geng H, Song L, Niu Y. Photocatalytic Superamphiphobic Coatings and the Effect of Surface Microstructures on Superamphiphobicity. ACS APPLIED MATERIALS & INTERFACES 2021; 13:12509-12520. [PMID: 33653025 DOI: 10.1021/acsami.0c22982] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In recent years, superamphiphobic coatings have been widely used in industrial transportation and environmental treatments because of their unique liquid repellency. In this study, WO3-TiO2 nanorods/SiO2 were used as the constructor of surface microstructures, and 1H,1H,2H,2H-perfluorodecyltriethoxysilane was used as the provider of low surface energy, and a photocatalytic superamphiphobic coating (FTS coating) was prepared. The microstructure and chemical composition of the coating was characterized by scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), Fourier-transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), and thermogravimetric analysis (TGA). The coating exhibited excellent photocatalytic activity toward degradation methyl red and nitric oxide (NO), and the degradation efficiency to NO reached 47.8%. Also, the advanced contact angle and the hysteresis angle of water, glycol, glycerol, and olive oil was used to evaluate the superamphiphobicity. After 7 days of ultraviolet (UV) aging, five cycles of airbrush flushing and 48 h of immersion in acid, salt, and alkali solutions, the FTS coating still exhibits excellent amphiphobicity, which lays a foundation for its large-scale applications in the concrete exterior wall. The surface microstructure and the formation of air pockets are a prerequisite for superamphiphobicity, which promotes the liquid on the coating surface into the Cassie-Baxter state. Furthermore, the formation of air pockets is closely related to the gas adsorption capacity and the specific surface area (SBET) of the surface microstructure on the coating surface. The coatings with different SBET constructed and the advanced contact angle were measured. The influence of air pockets on the superamphiphobicity of coatings was studied in combination with the optical microscope. The understanding that SBET further influences superamphiphobicity by affecting the surface air pockets is proposed.
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Affiliation(s)
- Guanyu Liu
- Engineering Research Center of Transportation Materials of Ministry of Education, School of Materials Science and Engineering, Chang'an University, Xi'an 710064, China
| | - Huiyun Xia
- Engineering Research Center of Transportation Materials of Ministry of Education, School of Materials Science and Engineering, Chang'an University, Xi'an 710064, China
| | - Wenshuo Zhang
- Engineering Research Center of Transportation Materials of Ministry of Education, School of Materials Science and Engineering, Chang'an University, Xi'an 710064, China
| | - Lei Lang
- Engineering Research Center of Transportation Materials of Ministry of Education, School of Materials Science and Engineering, Chang'an University, Xi'an 710064, China
| | - Haipeng Geng
- Engineering Research Center of Transportation Materials of Ministry of Education, School of Materials Science and Engineering, Chang'an University, Xi'an 710064, China
| | - Lifang Song
- Engineering Research Center of Transportation Materials of Ministry of Education, School of Materials Science and Engineering, Chang'an University, Xi'an 710064, China
| | - Yanhui Niu
- Engineering Research Center of Transportation Materials of Ministry of Education, School of Materials Science and Engineering, Chang'an University, Xi'an 710064, China
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23
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Vertically-ordered mesoporous silica films on graphene for anti-fouling electrochemical detection of tert-butylhydroquinone in cosmetics and edible oils. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2020.114969] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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24
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Using the photoinduced volt-ampere curves to study the p/n types of the corrosion products with semiconducting properties. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2020.114961] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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25
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Han Q, Lau JW, Do TC, Zhang Z, Xing B. Near-Infrared Light Brightens Bacterial Disinfection: Recent Progress and Perspectives. ACS APPLIED BIO MATERIALS 2020; 4:3937-3961. [DOI: 10.1021/acsabm.0c01341] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Qinyu Han
- Division of Chemistry and Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Jun Wei Lau
- Division of Chemistry and Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Thang Cong Do
- Division of Chemistry and Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Zhijun Zhang
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Bengang Xing
- Division of Chemistry and Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637549, Singapore
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26
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Barba-Nieto I, Caudillo-Flores U, Fernández-García M, Kubacka A. Sunlight-Operated TiO 2-Based Photocatalysts. Molecules 2020; 25:E4008. [PMID: 32887383 PMCID: PMC7504741 DOI: 10.3390/molecules25174008] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 08/20/2020] [Accepted: 08/28/2020] [Indexed: 11/16/2022] Open
Abstract
Photo-catalysis is a research field with broad applications in terms of potential technological applications related to energy production and managing, environmental protection, and chemical synthesis fields. A global goal, common to all of these fields, is to generate photo-catalytic materials able to use a renewable energy source such as the sun. As most active photocatalysts such as titanium oxides are essentially UV absorbers, they need to be upgraded in order to achieve the fruitful use of the whole solar spectrum, from UV to infrared wavelengths. A lot of different strategies have been pursued to reach this goal. Here, we selected representative examples of the most successful ones. We mainly highlighted doping and composite systems as those with higher potential in this quest. For each of these two approaches, we highlight the different possibilities explored in the literature. For doping of the main photocatalysts, we consider the use of metal and non-metals oriented to modify the band gap energy as well as to create specific localized electronic states. We also described selected cases of using up-conversion doping cations. For composite systems, we described the use of binary and ternary systems. In addition to a main photo-catalyst, these systems contain low band gap, up-conversion or plasmonic semiconductors, plasmonic and non-plasmonic metals and polymers.
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Affiliation(s)
- Irene Barba-Nieto
- Instituto de Catálisis y Petroleoquímica (CSIC), C/Marie Curie 2, Cantoblanco, 28049 Madrid, Spain; (I.B.-N.); (U.C.-F.)
| | - Uriel Caudillo-Flores
- Instituto de Catálisis y Petroleoquímica (CSIC), C/Marie Curie 2, Cantoblanco, 28049 Madrid, Spain; (I.B.-N.); (U.C.-F.)
- Centro de Nanociencias y Nanotecnología, Universidad Nacional Autónoma de México, Ensenada 22800, Mexico
| | - Marcos Fernández-García
- Instituto de Catálisis y Petroleoquímica (CSIC), C/Marie Curie 2, Cantoblanco, 28049 Madrid, Spain; (I.B.-N.); (U.C.-F.)
| | - Anna Kubacka
- Instituto de Catálisis y Petroleoquímica (CSIC), C/Marie Curie 2, Cantoblanco, 28049 Madrid, Spain; (I.B.-N.); (U.C.-F.)
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