Electrodeposition of TiO2/CdSe heterostructure films and photocatalytic degradation of methylene blue

Lu, Chengjia; Zhang, Lin; Zhang, Yunwang; Liu, Shenye

doi:10.1016/j.matlet.2016.09.017

Cited by 23 publications

(4 citation statements)

References 16 publications

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“…18 Currently, Chunlin Lu group reported TiO 2 /CdSe heterogeneous structure films and studied the photocatalytic activities of degrading methylene blue, and it still retained at 77.15% after three cycles photodegradation test, showing its good stability under illumination. 19 In our present work, the CdSe/TiO 2 coaxial nanocables show excellent PEC performance, the degradation rate to RhB solution reaches 98.71% for the first time, and still achieves 89.45% after being recycled for 6 times, the H 2 evolution rate is 10-fold and 5-fold enhancement compared with those of TiO 2 NTAs and CdSe NWAs.…”

supporting

confidence: 53%

Electrodeposition of CdSe/TiO₂Coaxial Nanocables for Enhanced Photocatalytic Performance and H₂Evolution in Visible Light

Wang¹,

Zhou²,

Lü³

et al. 2018

J. Electrochem. Soc.

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CdSe/TiO 2 coaxial nanocables hetero-structure, with the wall thickness of 20 nm and the external diameter of about 100 nm, was first constructed via a facile templated electrodeposition method. The SEM and TEM results indicate that CdSe nanowires arrays (NWAs) are symmetrically decorated on the inner pore walls of as-obtained TiO 2 nanotube arrays (NTAs). In addition, the photoelectrocatalytic (PEC) performances of as-prepared samples were also systematically investigated by UV-Vis absorption spectroscopy. The degradation rate of CdSe/TiO 2 coaxial cable to Rhodamine B (RhB) solution reaches 98.71% under visible-light irradiation for 7 h, and still achieves 89.45% after being reused for 6 cycles, suggesting its good reusability and stability. Kinetic analysis shows that the apparent reaction rate constants for TiO 2 NTAs, CdSe NWAs and CdSe/TiO 2 coaxial cables are 0.15085, 0.17218 and 0.75291 h −1 , respectively. Simultaneously, the H 2 evolution rate of CdSe/TiO 2 coaxial cables is 10-fold and 5-fold enhancement compared with those of TiO 2 NTAs and CdSe NWAs within 200 min. The improved PEC performance of CdSe/TiO 2 coaxial nanocables can be ascribed to the synergistic effect of TiO 2 NTAs and CdSe NWAs. This research demonstrates that CdSe/TiO 2 coaxial nanocables have a promising future in industrial and environmental applications.

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supporting

confidence: 53%

Electrodeposition of CdSe/TiO₂Coaxial Nanocables for Enhanced Photocatalytic Performance and H₂Evolution in Visible Light

Wang¹,

Zhou²,

Lü³

et al. 2018

J. Electrochem. Soc.

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“…However, the addition of CdSe does not affect the ternary nanocomposite. The CdSe was decorated on the ternary nanocomposite; hence, no major changes were encountered in the CuO/TiO 2 /ZnO peak. , …”

Section: Resultsmentioning

confidence: 99%

CdSe Quantum Dots Bedecked on ZnO/TiO₂/CuO Ternary Nanocomposite for Enhanced Photocatalytic and Photovoltaic Applications

Arjun Kumar,

Elangovan,

Karthigaimuthu

et al. 2023

Langmuir

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Herein, we synthesized a CdSe quantum dots (QDs)-decorated ternary metal oxide nanocomposite of ZnO/TiO2/CuO through a simple hydrothermal method. The prepared nanocomposite exhibited monoclinic, hexagonal, and cubic phase structures in XRD (X-ray diffraction) analysis. UV–vis absorbance spectra showed the broad absorption spectrum. SEM (scanning electron microscopy) clearly showed the presence of nanoparticles and confirmed the elements through elemental mapping. TEM (transmission electron microscopy) confirmed the nanostructure of metal oxides decorated with QDs. The average particle size was 45 nm for metal oxides and 7 nm for QDs. XPS (X-ray photoelectron spectroscopy) also confirmed the surface elemental composition. The prepared nanocomposites were introduced as photoanodes in DSSCs (dye-sensitized solar cells) and as photocatalysts for industrial dye solution. Among these samples, CdSe@CuO/TiO2/ZnO showed an improved performance of PCE (photon conversion efficiency) of 3.68% in DSSC and 96% photocatalytic degradation efficiency. It showed a recycling efficiency of ∼92% after 4 cycles against methylene blue (MB) organic dye under visible light irradiation.

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“…This result was attributed to the incorporation of SiO 2 enhancing the charge separation of photogenerated e − /h + pairs. Moreover, Lu et al [101] successfully fabricated TiO 2 /CdSe heterostructured films using a two-step electrodeposition method for the first time. Firstly, the anatase TiO 2 films were electrodeposited on FTO conductive glass using TiOSO 4 as the precursor, and then CdSe was electrodeposited on the obtained TiO 2 glass substrate with CdCl 2 and SeO 2 as precursors (Figure 13a).…”

Section: Electrodepositionmentioning

confidence: 99%

TiO2-Based Photocatalytic Coatings on Glass Substrates for Environmental Applications

Tian,

Feng,

Zheng

et al. 2023

Coatings

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To address environmental pollution and energy shortage issues, titanium dioxide (TiO2)-based photocatalysts, as an efficient pollution removal and fuel production technology, have been widely used in the field of photocatalysis. In practical applications, TiO2-based photocatalysts are usually prepared on various substrates to realize the separation of the catalyst from water and improve photocatalytic stability. Herein, the research progress of TiO2-based heterogeneous photocatalytic coatings deposited on glass substrates with various deposition techniques is reviewed. Such TiO2-based composite coatings obtained using different techniques showed excellent self-cleaning, pollution removal, air purification, and antibiosis performance. The various deposition techniques used for the preparation of TiO2 coatings, such as wet chemical deposition (WCD), electrodeposition, physical vapor deposition (PVD), and chemical vapor deposition (CVD) were discussed together with photocatalytic applications by highlighting the typical literature. Finally, the challenges and prospects of developing TiO2-based heterogeneous coatings were put forward.

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Electrodeposition of TiO2/CdSe heterostructure films and photocatalytic degradation of methylene blue

Cited by 23 publications

References 16 publications

Electrodeposition of CdSe/TiO₂Coaxial Nanocables for Enhanced Photocatalytic Performance and H₂Evolution in Visible Light

Electrodeposition of CdSe/TiO₂Coaxial Nanocables for Enhanced Photocatalytic Performance and H₂Evolution in Visible Light

CdSe Quantum Dots Bedecked on ZnO/TiO₂/CuO Ternary Nanocomposite for Enhanced Photocatalytic and Photovoltaic Applications

TiO2-Based Photocatalytic Coatings on Glass Substrates for Environmental Applications

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Electrodeposition of TiO2/CdSe heterostructure films and photocatalytic degradation of methylene blue

Cited by 23 publications

References 16 publications

Electrodeposition of CdSe/TiO2Coaxial Nanocables for Enhanced Photocatalytic Performance and H2Evolution in Visible Light

Electrodeposition of CdSe/TiO2Coaxial Nanocables for Enhanced Photocatalytic Performance and H2Evolution in Visible Light

CdSe Quantum Dots Bedecked on ZnO/TiO2/CuO Ternary Nanocomposite for Enhanced Photocatalytic and Photovoltaic Applications

TiO2-Based Photocatalytic Coatings on Glass Substrates for Environmental Applications

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Electrodeposition of CdSe/TiO₂Coaxial Nanocables for Enhanced Photocatalytic Performance and H₂Evolution in Visible Light

Electrodeposition of CdSe/TiO₂Coaxial Nanocables for Enhanced Photocatalytic Performance and H₂Evolution in Visible Light

CdSe Quantum Dots Bedecked on ZnO/TiO₂/CuO Ternary Nanocomposite for Enhanced Photocatalytic and Photovoltaic Applications