Bio-organic–inorganic hybrid photocatalyst, TiO2 and glucose oxidase composite for enhancing antibacterial performance in aqueous environments

Kim, Byoung Chan; Jeong, Eunhoo; Kim, Eunju; Hong, Seok Won

doi:10.1016/j.apcatb.2018.09.102

Cited by 38 publications

(14 citation statements)

References 43 publications

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“…In addition, as explained above, due to the high surface area of the TiO 2 nanotubes, catalytic enzymes had more freedom to spread throughout the scaffold, increasing the reaction sites and getting bonded to the TNTs. 48 Then, the enzyme–lactate complex (Ez-Fl ox –lactate) was converted to the enzyme–pyruvate structure (Ez-Fl re –pyruvate) by oxidizing lactate and reducing the LOX enzyme (Ez-Fl re ). Next, the pyruvate left the reduced state of the enzyme complex.…”

Section: Results and Discussionmentioning

confidence: 99%

TiO₂ Nanotubes Alginate Hydrogel Scaffold for Rapid Sensing of Sweat Biomarkers: Lactate and Glucose

Gunatilake

García-Rey

Ojeda

et al. 2021

ACS Appl. Mater. Interfaces

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Versatile sensing matrixes are essential for the development of enzyme-immobilized optical biosensors. A novel three-dimensional titanium dioxide nanotubes/alginate hydrogel scaffold is proposed for the detection of sweat biomarkers, lactate, and glucose in artificial sweat. Hydrothermally synthesized titanium dioxide nanotubes were introduced to the alginate polymeric matrix, followed by cross-linking nanocomposite with dicationic calcium ions to fabricate the scaffold platform. Rapid colorimetric detection (blue color optical signal) was carried out for both lactate and glucose biomarkers in artificial sweat at 4 and 6 min, respectively. The superhydrophilicity and the capillarity of the synthesized titanium dioxide nanotubes, when incorporated into the alginate matrix, facilitate the rapid transfer of the artificial sweat components throughout the sensor scaffold, decreasing the detection times. Moreover, the scaffold was integrated on a cellulose paper to demonstrate the adaptability of the material to other matrixes, obtaining fast and homogeneous colorimetric detection of lactate and glucose in the paper substrate when image analysis was performed. The properties of this new composite provide new avenues in the development of paper-based sensor devices. The biocompatibility, the efficient immobilization of biological enzymes/colorimetric assays, and the quick optical signal readout behavior of the titanium dioxide nanotubes/alginate hydrogel scaffolds provide a prospective opportunity for integration into wearable devices.

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Section: Results and Discussionmentioning

confidence: 99%

TiO₂ Nanotubes Alginate Hydrogel Scaffold for Rapid Sensing of Sweat Biomarkers: Lactate and Glucose

Gunatilake

García-Rey

Ojeda

et al. 2021

ACS Appl. Mater. Interfaces

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“…Upon light irradiation with larger energy than the band gap, electron-hole pairs form and result in the production of ROS, which degrades various organic substances [1]. Unfortunately, these materials can only exhibit excellent antibacterial effects under ultraviolet (UV) irradiation, which limits their applications in biotherapy [38,39]. In terms of electronic structure, TMSs possess a narrower band gap than transition metal oxides due to the larger anion radius of S atoms and the presence of well-dispersed S 3p orbits [40][41][42].…”

Section: Introductionmentioning

confidence: 99%

Shining light on transition metal sulfides: New choices as highly efficient antibacterial agents

Han

Yang

et al. 2021

Nano Res.

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Globally, millions of people die of microbial infection-related diseases every year. The more terrible situation is that due to the overuse of antibiotics, especially in developing countries, people are struggling to fight with the bacteria variation. The emergence of super-bacteria will be an intractable environmental and health hazard in the future unless novel bactericidal weapons are mounted. Consequently, it is critical to develop viable antibacterial approaches to sustain the prosperous development of human society. Recent researches indicate that transition metal sulfides (TMSs) represent prominent bactericidal application potential owing to the meritorious antibacterial performance, acceptable biocompatibility, high solar energy utilization efficiency, and excellent photo-to-thermal conversion characteristics, and thus, a comprehensive review on the recent advances in this area would be beneficial for the future development. In this review article, we start with the antibacterial mechanisms of TMSs to provide a preliminary understanding. Thereafter, the state-of-the-art research progresses on the strategies for TMSs materials engineering so as to promote their antibacterial properties are systematically surveyed and summarized, followed by a summary of the practical application scenarios of TMSs-based antibacterial platforms. Finally, based on the thorough survey and analysis, we emphasize the challenges and future development trends in this area.

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“…The realization of photocatalytic technology depends on the preparation of high-performance photocatalysts [ 5 , 6 , 7 ]. As the first reported photocatalyst in 1972 [ 8 ], TiO 2 has received an increasing amount of attention, owing to its chemical stability, low cost, nontoxicity and high photocatalytic activity [ 9 , 10 ]. Unfortunately, in addition to the above advantages, the large band gaps (3.2 eV), the limitation of visible light absorption and the fast recombination rate of electron–hole pairs still restrict the application of TiO 2 in the field of photocatalysis [ 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

Thermo-Responsive ZnPc-g-TiO2-g-PNIPAM Photocatalysts Sensitized with Phthalocyanines for Water Purification under Visible Light

et al. 2022

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A novel thermo-responsive 2,9(10),16(17),23(24)-tetrakis[(3-carboxyacrylamide) phthalocyaninato] zinc (ZnPc)-g-TiO2-g-poly(N-isopropylacrylamide) (PNIPAM) photocatalyst modified with phthalocyanines was prepared. The photocatalyst exhibited thermo-responsive properties due to the introduction of PNIPAM, which performed recovery for reuse above the lower critical solution temperature (LCST, about 26 °C). ZnPc-g-TiO2-g-PNIPAM effectively expanded the light response range to the visible light region and inhibited the recombination of electron–hole pairs, which enhanced the performance of the photocatalyst. As expected, ZnPc-g-TiO2-g-PNIPAM (0.3 g/L) exhibited excellent photocatalytic performance for the removal of Rhodamine B (RhB, 1.0 × 10−5 mol/L) and methylene blue (MB, 1.0 × 10−5 mol/L) under visible light, which reached 97.2% and 88.6% at 20 °C within 40 min, respectively. Furthermore, the influence of temperature upon photocatalytic performance was also investigated. When the temperature increased from 20 °C to 45 °C, the removal of RhB decreased by approximately 53.8%. The stability of the photocatalyst demonstrated that the photocatalytic activity was still above 80% for the removal of RhB after 3 cycles. Above all, this work provided an intelligent thermally responsive photocatalyst based on phthalocyanine for water purification under visible light.

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Bio-organic–inorganic hybrid photocatalyst, TiO2 and glucose oxidase composite for enhancing antibacterial performance in aqueous environments

Cited by 38 publications

References 43 publications

TiO₂ Nanotubes Alginate Hydrogel Scaffold for Rapid Sensing of Sweat Biomarkers: Lactate and Glucose

TiO₂ Nanotubes Alginate Hydrogel Scaffold for Rapid Sensing of Sweat Biomarkers: Lactate and Glucose

Shining light on transition metal sulfides: New choices as highly efficient antibacterial agents

Thermo-Responsive ZnPc-g-TiO2-g-PNIPAM Photocatalysts Sensitized with Phthalocyanines for Water Purification under Visible Light

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Bio-organic–inorganic hybrid photocatalyst, TiO2 and glucose oxidase composite for enhancing antibacterial performance in aqueous environments

Cited by 38 publications

References 43 publications

TiO2 Nanotubes Alginate Hydrogel Scaffold for Rapid Sensing of Sweat Biomarkers: Lactate and Glucose

TiO2 Nanotubes Alginate Hydrogel Scaffold for Rapid Sensing of Sweat Biomarkers: Lactate and Glucose

Shining light on transition metal sulfides: New choices as highly efficient antibacterial agents

Thermo-Responsive ZnPc-g-TiO2-g-PNIPAM Photocatalysts Sensitized with Phthalocyanines for Water Purification under Visible Light

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Product

Resources

About

TiO₂ Nanotubes Alginate Hydrogel Scaffold for Rapid Sensing of Sweat Biomarkers: Lactate and Glucose

TiO₂ Nanotubes Alginate Hydrogel Scaffold for Rapid Sensing of Sweat Biomarkers: Lactate and Glucose