Template synthesis and characterization of Cu2O/TiO2 coaxial nanocable for photocatalysis

Wang, Hong Zhi; Liu, Ning; Lü, Jing; Yao, Susu; Jiang, Shisheng; Zhang, Wei Guo

doi:10.1007/s40242-015-5019-0

Cited by 9 publications

(3 citation statements)

References 18 publications

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“…It was accepted that the bottom of the conduction band (CB) for n‐type of semiconductor was more negative (0–0.2 eV) than E fb , [ 30 ] and the top of valence band (VB) for p‐type of semiconductor was more positive (0–0.3 eV) than E fb . Therefore, the CB potential of pure TiO 2 NTs was −0.6 eV, the CB potential of TiO 2 NTs in Cu 2 O QDs/TiO 2 NTs was −0.26 eV, and the VB potential of Cu 2 O in composites was 1.57 eV.…”

Section: Resultsmentioning

confidence: 99%

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Designed Synthesis of Cu₂O Quantum Dots/TiO₂ Nanotubes Heterostructure as a Photocatalyst for Converting CO₂ to CH₄

Yuan,

Qian,

Cao

et al. 2023

Adv Eng Mater

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In this work, H+ in oxalic acid was used instead of Na+ to obtain titanate nanosheets through P200 hydrolysis, which further curled to form a multilayer TiO2 nanotubes (NTs) structure. Then, Cu2O quantum dots (QDs) were successfully loaded on TiO2 NTs by hydrothermal method using fructose as a reducing agent. The optical, impedance, and photocurrent tests indicated that the composite structure improved its optoelectronic performance. The photocatalytic H2 production and CO2 reduction efficiency of Cu2O QDs/TiO2 NTs were lower than those of TiO2 NTs. However, the molar ratio of CH4 to CO produced by CO2 reduction of Cu2O QDs/TiO2 NTs composite catalyst was greater than that of pure TiO2 NTs. The CH4 production accounted for 97%, indicating that the composite catalyst had a high CH4 selectivity. The experimental and DFT calculation results proved that the Z‐scheme heterojunction accelerated the separation and transfer of photo‐generated carriers, and broadened the absorption range of visible light.This article is protected by copyright. All rights reserved.

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Section: Resultsmentioning

confidence: 99%

“…It was accepted that the bottom of the conduction band (CB) for n-type of semiconductor was more negative (0-0.2 eV) than E fb , [30] and the top of valence band (VB) for p-type of semiconductor was more positive (0-0. Figure 4a shows photocatalytic performance of TiO 2 NTs and Cu 2 O QDs/TiO 2 NTs for H 2 production.…”

Section: Resultsmentioning

confidence: 99%

Designed Synthesis of Cu₂O Quantum Dots/TiO₂ Nanotubes Heterostructure as a Photocatalyst for Converting CO₂ to CH₄

Yuan,

Qian,

Cao

et al. 2023

Adv Eng Mater

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“…[8,10,12,15] In our previous studies, the cellulases from marine A. niger have been proved to be more halo-tolerant than those from terrestrial A. niger . [17][18][19][20][21] Fortunately, a halo-tolerant BGL from marine A. niger has been successfully characterized. [10] Some studies have provided speculation on the mechanisms of halo-tolerance.…”

Section: Introductionmentioning

confidence: 99%

Halo-tolerant and thermostable mechanisms of an endoglucanase from marine Aspergillus niger

Cai,

Lu,

Lin

et al. 2024

Preprint

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The cellulase cocktail of marine Aspergillus niger exhibited halo-tolerant and thermostable properties, which is of great potential in industrial application. In order to excavate single tolerant cellulase components from the complex cellulase cocktail, constitutive homologous expression was employed for direct obtainment of the endoglucanase (AnEGL). The constitutive expression system seems as “separation factor” to be implanted into cell for conveniently obtaining a single target enzyme. Enzymatic property study revealed that AnEGL exhibited a property of halo-tolerance and an outstanding thermostability in high salt environment. Significantly, its activity increased by 29% and the half-life at 65 °C increased by 26.7-fold with the presence of 4.5 M NaCl. Molecular dynamics (MD) simulation revealed that Na and Cl could form salt bridges with charged residues, and then influenced the activity of loops and the stability of substrate binding pocket, which accounted for the halo-tolerance and thermostability. Further, site-specific mutagenesis study proved that the residues Asp95 and Asp99 in the pocket were of great concern for the halo-tolerance and thermostability. The halo-tolerant and thermostable AnEGL was of great value in lignocellulosic utilization and the conjectural mechanisms were of referential significance for other tolerant enzymes.

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Charge Steering in Heterojunction Photocatalysis: General Principles, Design, Construction, and Challenges

Eshete

et al. 2023

Small Science

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Steering charge kinetics is a key to optimizing quantum efficiency. Advancing the design of photocatalysts (ranging from single semiconductor to multicomponent semiconductor junctions) that promise improved photocatalytic performance for converting solar to chemical energy, entails mastery of increasingly more complicated processes. Indeed, charge kinetics become more complex as both charge generation and charge consumption may occur simultaneously on different components, generally with charges being transferred from one component to another. Capturing detailed charge dynamics information in each heterojunction would provide numerous significant benefits for applications and has been needed for a long time. Here, the steering of charge kinetics by modulating charge energy states in the design of semiconductor–metal‐interface‐based heterogeneous photocatalysts is focused. These phenomena can be delineated by separating heterojunctions into classes exhibiting either Schottky/ohmic or plasmonic effects. General principles for the design and construction of heterojunction photocatalysts, including recent advances in the interfacing of semiconductors with graphene, carbon quantum dots, and graphitic carbon nitride are presented. Their limitations and possible future outlook are brought forward to further instruct the field in designing highly efficient photocatalysts.

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Template synthesis and characterization of Cu2O/TiO2 coaxial nanocable for photocatalysis

Cited by 9 publications

References 18 publications

Designed Synthesis of Cu₂O Quantum Dots/TiO₂ Nanotubes Heterostructure as a Photocatalyst for Converting CO₂ to CH₄

Designed Synthesis of Cu₂O Quantum Dots/TiO₂ Nanotubes Heterostructure as a Photocatalyst for Converting CO₂ to CH₄

Halo-tolerant and thermostable mechanisms of an endoglucanase from marine Aspergillus niger

Charge Steering in Heterojunction Photocatalysis: General Principles, Design, Construction, and Challenges

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Template synthesis and characterization of Cu2O/TiO2 coaxial nanocable for photocatalysis

Cited by 9 publications

References 18 publications

Designed Synthesis of Cu2O Quantum Dots/TiO2 Nanotubes Heterostructure as a Photocatalyst for Converting CO2 to CH4

Designed Synthesis of Cu2O Quantum Dots/TiO2 Nanotubes Heterostructure as a Photocatalyst for Converting CO2 to CH4

Halo-tolerant and thermostable mechanisms of an endoglucanase from marine Aspergillus niger

Charge Steering in Heterojunction Photocatalysis: General Principles, Design, Construction, and Challenges

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Designed Synthesis of Cu₂O Quantum Dots/TiO₂ Nanotubes Heterostructure as a Photocatalyst for Converting CO₂ to CH₄

Designed Synthesis of Cu₂O Quantum Dots/TiO₂ Nanotubes Heterostructure as a Photocatalyst for Converting CO₂ to CH₄