N-doped rutile TiO2/C hybrids with enhanced charge transfer capability derived from NH2-MIL-125(Ti) for the photocatalytic degradation of tetracycline

Wang, Yuxin; Chen, Jinfeng; Zhang, Xialu; Yang, Yiqiong; Yang, Qilin; Li, Xuefeng; Tao, Xuefen; Jin, Yinxiu; Lü, Guang; Zhang, Xiaodong

doi:10.1016/j.materresbull.2022.111968

Cited by 29 publications

(6 citation statements)

References 52 publications

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“…Figure 9(c) shows the high-resolution spectrum of O 1s. The results show that O 1s has two fitting peaks, located at 529.3eV and 530.7eV respectively, where 529.3eV corresponds to lattice oxygen and 530.7eV corresponds to adsorbed oxygen [17] . Lattice oxygen comes from O in the TiO 2 lattice, and adsorbed oxygen may come from oxygen-containing substances such as water molecules on the sample surface.…”

Section: X-ray Photoelectron Spectroscopy (Xps)mentioning

confidence: 96%

Preparation of modified TiO2 and its photocatalytic properties

2023

AJMC

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In this chapter, tetrabutyl titanate was used as the titanium source, and the photocatalytic performance of commercial TiO 2 and self-made TiO 2 was compared by sol-gel method. Since ready-made commercial TiO 2 is not easy to be doped and modified, this chapter also performs alkali solution surface modification at the same time as self-made TiO 2 (that is, the TiO 2 to be modified is immersed in alkali solution at different pH values and then dried), and the photocatalytic performance of the two before and after the surface modification of alkali solution is compared. In order to improve the photocatalytic performance of self-made TiO 2 , this chapter modifies the iron doping of self-made TiO 2 during the preparation process to enhance its photocatalytic performance. After iron doping modification of TiO 2 , in order to further improve its performance, the modified sample was modified with alkali solution surface. In this paper, the microscopic characterization and nitrogen and oxygen catalytic performance tests of each sample were carried out, and the results showed that the photocatalytic performance of self-prepared TiO 2 was significantly better than that of commercial TiO 2 . Among the TiO 2 modified by different pH solutions, the catalytic performance was the best at pH 11.5, and the photocatalytic performance of Fe-doped TiO 2 was also improved to varying degrees compared with pure TiO 2 , among which Fe doping 0.5% contributed the most to the photocatalytic performance. After the surface modification of Fe (0.5%)-TiO 2 with the best doping amount by alkali solution, the photocatalytic performance was also improved.

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Section: X-ray Photoelectron Spectroscopy (Xps)mentioning

confidence: 96%

Preparation of modified TiO2 and its photocatalytic properties

2023

AJMC

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“…Figure 2(b) shows the high-resolution XPS scans over Ti 2p peaks of the ER-TiO 2 nanoparticle sample, in which two peaks centered at ~458.4 and ~464.2 eV could be observed, corresponding to the 2p 1/3 and 2p 3/2 peaks of Ti 4+ , respectively [36]. Figure 2(c) shows its high-resolution XPS scans over O 1s peaks, which could be best fitted by the combination of three peaks centered at ~529.6, ~531.1, and ~532.3 eV, corresponding to lattice oxygen (O L ), oxygen vacancies (O V ), and surface oxygen (O C ), respectively [29]. Figure 2(d) shows the highresolution XPS scans over N 1s peaks, which could be best fitted by the combination of two peaks centered at ~398.5 and ~399.7 eV, respectively.…”

Section: Chemical Composition Of Er-tio 2 Nanoparticle Samplementioning

confidence: 99%

“…As one important kind of emerging contaminant, the contamination from pharmaceutical and personal care products (PPCPs) are raising increasing concerns [29]. Tetracycline hydrochloride (TC-HCl) is a commonly used broad-spectrum antibiotic, and its release into water and soil causes serious environmental pollution problems and poses threats to human beings [30−32].…”

Section: Introductionmentioning

confidence: 99%

Inducing piezoelectricity in distorted rutile TiO ₂ for enhanced tetracycline hydrochloride degradation through photopiezocatalysis

Xia,

Lu,

Zhang

et al. 2024

Journal of Advanced Ceramics

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Various material design strategies have been developed to enhance photocatalytic performance of TiO 2 . However, no report is available on applications of the photopiezocatalysis strategy on TiO 2 due to its lack of piezoelectricity.Here we developed a low-temperature molten salt etching process to create rutile TiO 2 nanoparticles by etching [MgO 6 ] octahedrons away from MgTiO 3 by molten NH 4 Cl, during which a lattice distortion occurred in TiO 2 . The lattice distortion broke the structure symmetry of rutile TiO 2 and subsequently endowed these rutile TiO 2 nanoparticles with an unusual piezoelectric response with the maximum effective piezoelectric coefficient (d 33 ) of ~41.6 pm/V, which had not previously been found in TiO 2 photocatalysts. Thus, the photopiezocatalysis strategy was applied for the first time to enhance the photocatalytic performance of these TiO 2 nanoparticles. The creation of lattice distortion to induce piezoelectricity could be extended to other photocatalysts that the photopiezocatalysis strategy has not been applied to and may generate novel functionalities for various technical applications.

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“…Moreover, the rougher surfaces of titanium implants enable the adhesion of bacteria or host proteins that form biofilms [ 3 ]. Modifications to the physiochemical properties of titanium implants, such as their chemical composition, roughness, and wettability [ 13 , 14 , 15 , 16 ], can modulate the responses of pathogenic bacteria and biofilms and can promote cellular adhesion, proliferation, and osseointegration [ 17 ]. There are many methods used to modify titanium surfaces, including plasma spraying, sol–gel deposition, and vapor deposition.…”

Section: Introductionmentioning

confidence: 99%

A Water-Based Biocoating to Increase the Infection Resistance and Osteoconductivity of Titanium Surfaces

Luo,

Chang,

Chang

et al. 2024

IJMS

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As the population ages, the number of patients undergoing total hip arthroplasty (THA) and total knee arthroplasty (TKA) continues to increase. Infections after primary arthroplasty are rare but have high rates of morbidity and mortality, as well as enormous financial implications for healthcare systems. Numerous methods including the use of superhydrophobic coatings, the incorporation of antibacterial agents, and the application of topographical treatments have been developed to reduce bacterial attachment to medical devices. However, most of these methods require complex manufacturing processes. Thus, the main purpose of this study was to apply biocoatings to titanium (Ti) surfaces to increase their infection resistance and osteoconductivity via simple processes, without organic reagents. We modified titanium surfaces with a combination of aminomalononitrile (AMN) and an antibiotic-loaded mesoporous bioactive glass (MBG) and evaluated both the antibacterial effects of the coating layer and its effect on osteoblast proliferation and differentiation. The properties of the modified surface, such as the hydrophilicity, roughness, and surface morphology, were characterized via contact angle measurements, atomic force microscopy, and scanning electron microscopy. The cell proliferation reagent WST-1 assay and the alkaline phosphatase (ALP) assay were used to determine the degrees of adhesion and differentiation, respectively, of the MG-63 osteoblast-like cells on the surface. Antimicrobial activity was evaluated by examining the survival rate and inhibition zone of Escherichia coli (E. coli). The AMN coating layer reduced the water contact angle (WCA) of the titanium surface from 87° ± 2.5° to 53° ± 2.3° and this change was retained even after immersion in deionized water for five weeks, demonstrating the stability of the AMN coating. Compared with nontreated titanium and polydopamine (PDA) coating layers, the AMN surface coating increased MG-63 cell attachment, spreading, and early ALP expression; reduced E. coli adhesion; and increased the percentage of dead bacteria. In addition, the AMN coating served as an adhesion layer for the subsequent deposition of MBG-containing antibiotic nanoparticles. The synergistic effects of the AMN layer and antibiotics released from the MBG resulted in an obvious E. coli inhibition zone that was not observed in the nontreated titanium group.

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N-doped rutile TiO2/C hybrids with enhanced charge transfer capability derived from NH2-MIL-125(Ti) for the photocatalytic degradation of tetracycline

Cited by 29 publications

References 52 publications

Preparation of modified TiO2 and its photocatalytic properties

Preparation of modified TiO2 and its photocatalytic properties

Inducing piezoelectricity in distorted rutile TiO ₂ for enhanced tetracycline hydrochloride degradation through photopiezocatalysis

A Water-Based Biocoating to Increase the Infection Resistance and Osteoconductivity of Titanium Surfaces

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N-doped rutile TiO2/C hybrids with enhanced charge transfer capability derived from NH2-MIL-125(Ti) for the photocatalytic degradation of tetracycline

Cited by 29 publications

References 52 publications

Preparation of modified TiO2 and its photocatalytic properties

Preparation of modified TiO2 and its photocatalytic properties

Inducing piezoelectricity in distorted rutile TiO 2 for enhanced tetracycline hydrochloride degradation through photopiezocatalysis

A Water-Based Biocoating to Increase the Infection Resistance and Osteoconductivity of Titanium Surfaces

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Inducing piezoelectricity in distorted rutile TiO ₂ for enhanced tetracycline hydrochloride degradation through photopiezocatalysis