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Guo L, Zhang X, Meng F, Yuan J, Zeng Y, Han C, Jia Y, Gu M, Zhang S, Zhong Q. Synergistic effect of F and triggered oxygen vacancies over F-TiO 2 on enhancing NO ozonation. J Environ Sci (China) 2023; 125:319-331. [PMID: 36375917 DOI: 10.1016/j.jes.2022.01.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 01/02/2022] [Accepted: 01/05/2022] [Indexed: 06/16/2023]
Abstract
Oxidation-absorption technology is a key step for NOx removal from low-temperature gas. Under the condition of low O3 concentration (O3/NO molar ratio = 0.6), F-TiO2 (F-TiO2), which is cheap and environmentally friendly, has been prepared as ozonation catalysts for NO oxidation. Catalytic activity tests performed at 120°C showed that the NO oxidation efficiency of F-TiO2 samples was higher than that of TiO2 (about 43.7%), and the NO oxidation efficiency of F-TiO2-0.15 was the highest, which was 65.3%. Combined with physicochemical characteristics of catalysts and the analysis of active species, it was found that there was a synergistic effect between F sites and oxygen vacancies on F-TiO2, which could accelerate the transformation of monomolecular O3 into multi-molecule singlet oxygen (1O2), thus promoting the selective oxidation of NO to NO2. The oxidation reaction of NO on F-TiO2-0.15 follows the Eley-Rideal mechanism, that is, gaseous NO reacts with adsorbed O3 and finally form NO2.
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Affiliation(s)
- Lina Guo
- Key Laboratory of Metallurgical Emission Reduction and Resources Recycling (Anhui University of Technology), Ministry of Education, Ma'anshan 243002, China
| | - Xu Zhang
- Key Laboratory of Metallurgical Emission Reduction and Resources Recycling (Anhui University of Technology), Ministry of Education, Ma'anshan 243002, China
| | - Fanyu Meng
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Jing Yuan
- Donadeo Innovation Centre of Engineering, University of Alberta, Edmonton T6G 1H9, Canada
| | - Yiqing Zeng
- Key Laboratory of Metallurgical Emission Reduction and Resources Recycling (Anhui University of Technology), Ministry of Education, Ma'anshan 243002, China
| | - Chenyang Han
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Yong Jia
- Key Laboratory of Metallurgical Emission Reduction and Resources Recycling (Anhui University of Technology), Ministry of Education, Ma'anshan 243002, China.
| | - Mingyan Gu
- Key Laboratory of Metallurgical Emission Reduction and Resources Recycling (Anhui University of Technology), Ministry of Education, Ma'anshan 243002, China
| | - Shule Zhang
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
| | - Qin Zhong
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
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Ratre P, Nazeer N, Kumari R, Thareja S, Jain B, Tiwari R, Kamthan A, Srivastava RK, Mishra PK. Carbon-Based Fluorescent Nano-Biosensors for the Detection of Cell-Free Circulating MicroRNAs. BIOSENSORS 2023; 13:226. [PMID: 36831992 PMCID: PMC9953975 DOI: 10.3390/bios13020226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 02/02/2023] [Accepted: 02/02/2023] [Indexed: 06/18/2023]
Abstract
Currently, non-communicable diseases (NCDs) have emerged as potential risks for humans due to adopting a sedentary lifestyle and inaccurate diagnoses. The early detection of NCDs using point-of-care technologies significantly decreases the burden and will be poised to transform clinical intervention and healthcare provision. An imbalance in the levels of circulating cell-free microRNAs (ccf-miRNA) has manifested in NCDs, which are passively released into the bloodstream or actively produced from cells, improving the efficacy of disease screening and providing enormous sensing potential. The effective sensing of ccf-miRNA continues to be a significant technical challenge, even though sophisticated equipment is needed to analyze readouts and expression patterns. Nanomaterials have come to light as a potential solution as they provide significant advantages over other widely used diagnostic techniques to measure miRNAs. Particularly, CNDs-based fluorescence nano-biosensors are of great interest. Owing to the excellent fluorescence characteristics of CNDs, developing such sensors for ccf-microRNAs has been much more accessible. Here, we have critically examined recent advancements in fluorescence-based CNDs biosensors, including tools and techniques used for manufacturing these biosensors. Green synthesis methods for scaling up high-quality, fluorescent CNDs from a natural source are discussed. The various surface modifications that help attach biomolecules to CNDs utilizing covalent conjugation techniques for multiple applications, including self-assembly, sensing, and imaging, are analyzed. The current review will be of particular interest to researchers interested in fluorescence-based biosensors, materials chemistry, nanomedicine, and related fields, as we focus on CNDs-based nano-biosensors for ccf-miRNAs detection applications in the medical field.
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Affiliation(s)
- Pooja Ratre
- Department of Molecular Biology, ICMR-National Institute for Research in Environmental Health, Bhopal 462030, India
| | - Nazim Nazeer
- Department of Molecular Biology, ICMR-National Institute for Research in Environmental Health, Bhopal 462030, India
| | - Roshani Kumari
- Department of Molecular Biology, ICMR-National Institute for Research in Environmental Health, Bhopal 462030, India
| | - Suresh Thareja
- Department of Pharmaceutical Sciences and Natural Products, Central University of Punjab, Bathinda 151401, India
| | - Bulbul Jain
- Department of Molecular Biology, ICMR-National Institute for Research in Environmental Health, Bhopal 462030, India
| | - Rajnarayan Tiwari
- Department of Molecular Biology, ICMR-National Institute for Research in Environmental Health, Bhopal 462030, India
| | - Arunika Kamthan
- Department of Molecular Biology, ICMR-National Institute for Research in Environmental Health, Bhopal 462030, India
| | - Rupesh K. Srivastava
- Department of Biotechnology, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Pradyumna Kumar Mishra
- Department of Molecular Biology, ICMR-National Institute for Research in Environmental Health, Bhopal 462030, India
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Zhao Y, Zhang H, Hong L, Zou X, Song J, Han R, Chen J, Yu Y, Liu X, Zhao H, Zhang Z. A Multifunctional Dental Resin Composite with Sr-N-Doped TiO 2 and n-HA Fillers for Antibacterial and Mineralization Effects. Int J Mol Sci 2023; 24:ijms24021274. [PMID: 36674788 PMCID: PMC9861335 DOI: 10.3390/ijms24021274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 12/28/2022] [Accepted: 01/02/2023] [Indexed: 01/11/2023] Open
Abstract
Dental caries, particularly secondary caries, which is the main contributor to dental repair failure, has been the subject of extensive research due to its biofilm-mediated, sugar-driven, multifactorial, and dynamic characteristics. The clinical utility of restorations is improved by cleaning bacteria nearby and remineralizing marginal crevices. In this study, a novel multifunctional dental resin composite (DRC) composed of Sr-N-co-doped titanium dioxide (Sr-N-TiO2) nanoparticles and nano-hydroxyapatite (n-HA) reinforcing fillers with improved antibacterial and mineralization properties is proposed. The experimental results showed that the anatase-phase Sr-N-TiO2 nanoparticles were synthesized successfully. After this, the curing depth (CD) of the DRC was measured from 4.36 ± 0.18 mm to 5.10 ± 0.19 mm, which met the clinical treatment needs. The maximum antibacterial rate against Streptococcus mutans (S. mutans) was 98.96%, showing significant inhibition effects (p < 0.0001), which was experimentally verified to be derived from reactive oxygen species (ROS). Meanwhile, the resin exhibited excellent self-remineralization behavior in an SBF solution, and the molar ratio of Ca/P was close to that of HA. Moreover, the relative growth rate (RGR) of mouse fibroblast L929 indicated a high biocompatibility, with the cytotoxicity level being 0 or I. Therefore, our research provides a suitable approach for improving the antibacterial and mineralization properties of DRCs.
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Affiliation(s)
- Yuanhang Zhao
- Department of Endodontics, School of Dentistry, Jilin University, Changchun 130021, China
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Changchun 130021, China
| | - Hong Zhang
- Department of Endodontics, School of Dentistry, Jilin University, Changchun 130021, China
| | - Lihua Hong
- Department of Endodontics, School of Dentistry, Jilin University, Changchun 130021, China
| | - Xinying Zou
- Department of Endodontics, School of Dentistry, Jilin University, Changchun 130021, China
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Changchun 130021, China
| | - Jiazhuo Song
- Department of Endodontics, School of Dentistry, Jilin University, Changchun 130021, China
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Changchun 130021, China
| | - Rong Han
- Department of Endodontics, School of Dentistry, Jilin University, Changchun 130021, China
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Changchun 130021, China
| | - Jiawen Chen
- Department of Endodontics, School of Dentistry, Jilin University, Changchun 130021, China
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Changchun 130021, China
| | - Yiyan Yu
- Department of Endodontics, School of Dentistry, Jilin University, Changchun 130021, China
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Changchun 130021, China
| | - Xin Liu
- Department of Endodontics, School of Dentistry, Jilin University, Changchun 130021, China
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Changchun 130021, China
| | - Hong Zhao
- Department of Endodontics, School of Dentistry, Jilin University, Changchun 130021, China
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Changchun 130021, China
| | - Zhimin Zhang
- Department of Endodontics, School of Dentistry, Jilin University, Changchun 130021, China
- Correspondence:
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Sharma S, Sharma A, Chauhan NS, Tahir M, Kumari K, Mittal A, Kumar N. TiO2/Bi2O3/PANI nanocomposite materials for enhanced photocatalytic decontamination of organic pollutants. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.110093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Attribution of photocatalysis of fluorescent natural organic matter fractions to the alleviation of ceramic membrane ultrafiltration fouling. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Yu R, Yang Y, Zhou Z, Li X, Gao J, Wang N, Li J, Liu Y. Facile synthesis of ternary heterojunction Bi2O3/reduced graphene oxide/TiO2 composite with boosted visible-light photocatalytic activity. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121712] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Xiao M, Li R, Hu X, Zhu W, Yu Z, Xiao H, Wang W, Yang T. Construction of in-situ carbon-doped TiO2 decorated Fe3O4 heterojunction and their enhanced photocatalytic oxidation of As(III) under visible light. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Ekar S, Nakate UT, Khollam YB, Shaikh SF, Mane RS, Rana AUHS, Palaniswami M. Effect of Pd-Sensitization on Poisonous Chlorine Gas Detection Ability of TiO 2: Green Synthesis and Low-Temperature Operation. SENSORS 2022; 22:s22114200. [PMID: 35684819 PMCID: PMC9185264 DOI: 10.3390/s22114200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 05/19/2022] [Accepted: 05/27/2022] [Indexed: 12/10/2022]
Abstract
Ganoderma lucidum mushroom-mediated green synthesis of nanocrystalline titanium dioxide (TiO2) is explored via a low-temperature (≤70 °C) wet chemical method. The role of Ganoderma lucidum mushroom extract in the reaction is to release the ganoderic acid molecules that tend to bind to the Ti4+ metal ions to form a titanium-ganoderic acid intermediate complex for obtaining TiO2 nanocrystallites (NCs), which is quite novel, considering the recent advances in fabricated gas sensing materials. The X-ray powder diffraction, field emission scanning electron microscopy, Raman spectroscopy, and Brunauer–Emmett–Teller measurements etc., are used to characterize the crystal structure, surface morphology, and surface area of as-synthesized TiO2 and Pd-TiO2 sensors, respectively. The chlorine (Cl2) gas sensing properties are investigated from a lower range of 5 ppm to a higher range of 400 ppm. In addition to excellent response–recovery time, good selectivity, constant repeatability, as well as chemical stability, the gas sensor efficiency of the as-synthesized Pd-TiO2 NC sensor is better (136% response at 150 °C operating temperature) than the TiO2 NC sensor (57% at 250 °C operating temperature) measured at 100 ppm (Cl2) gas concentration, suggesting that the green synthesized Pd-TiO2 sensor demonstrates efficient Cl2 gas sensing properties at low operating temperatures over pristine ones.
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Affiliation(s)
- Satish Ekar
- Department of Physics, Baboraoji Gholap College, Pune 411027, Maharashtra, India;
- Correspondence: (S.E.); (A.u.H.S.R.)
| | - Umesh T. Nakate
- Department of Polymer-Nano Science and Technology, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju-si 54896, Jeollabuk-do, Korea;
| | - Yogesh B. Khollam
- Department of Physics, Baboraoji Gholap College, Pune 411027, Maharashtra, India;
| | - Shoyebmohamad F. Shaikh
- Department of Chemistry, College of Science, King Saud University, Bld-5, Riyadh 11451, Saudi Arabia;
| | - Rajaram S. Mane
- Centre for Nano-Materials and Energy Devices, School of Physical Sciences, Swami Ramanand Teerth Marathwada University, Nanded 431606, Maharashtra, India;
| | - Abu ul Hassan S. Rana
- Department of Electrical and Electronic Engineering, The University of Melbourne, Parkville, VIC 3010, Australia;
- Department of Obstetrics and Gynaecology, The University of Melbourne, Parkville, VIC 3010, Australia
- Correspondence: (S.E.); (A.u.H.S.R.)
| | - Marimuthu Palaniswami
- Department of Electrical and Electronic Engineering, The University of Melbourne, Parkville, VIC 3010, Australia;
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Dual-Functional Green Facile CuO/MgO Nanosheets Composite as an Efficient Antimicrobial Agent and Photocatalyst. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2022. [DOI: 10.1007/s13369-021-05741-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Sharma A, Mittal A, Sharma S, Kumari K, Maken S, Kumar N. Cu2+-doped α–β phase heterojunctions in Bi2O3 nanoparticles for enhanced photocatalytic degradation of organic dye rhodamine B. APPLIED NANOSCIENCE 2021. [DOI: 10.1007/s13204-021-02250-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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