Enhanced photoelectrochemical activity of magnetically modified TiO2 prepared by a simple ex-situ route

Yılmaz, Seda; Kuyumcu, Özge Kerkez; Bayazit, Şahika Sena; Ayaz, Rana Muhammad Zunain; Akyüz, Duygu; Koca, Atıf

doi:10.1007/s10008-021-05083-w

Cited by 3 publications

(8 citation statements)

References 59 publications

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“…67 In addition to metal doping, coupling with semiconductor composites has been also employed to modify semiconductors with wide or medium band gaps. 61 55 In another example, CuInS 2 quantum dots (QDs) as an efficient inorganic dye expanded the visible light absorption of TiO 2 . 69 A g-C 3 N 4 /CuWO 4 nanocomposite, 61 ZnO nanodisks@g-C 3 N 4 , 66 or CdS QDs/ TiO 2 nanorods 70 with improved photoelectrochemical activity in the visible region have been also proposed as efficient photoanode materials.…”

Section: ■ Energy Harvesting Materialsmentioning

confidence: 99%

“…A large number of semiconductors are known as photoelectrochemical probes in the UV or visible regions, whose performance depends on their band gap. In recent years, various materials containing inorganic semiconductors, such as Fe 2 O 3 , Fe 3 O 4 , Bi, W, or graphitic carbon nitride (g-C 3 N 4 ) based heterostructures, or ZnO thin films and organic semiconductors, like fullerenes (C 60 , C 70 , etc. ) as n-type semiconductors or metal-free phthalocyanine as a p-type semiconductor, have been used for fabrication of visible light-driven sensors.…”

Section: Energy Harvesting Materialsmentioning

confidence: 99%

“…Yılmaz et al. showed that magnetically modified TiO 2 nanocomposites (Fe 3 O 4 /TiO 2 or NiFe 2 O 4 /TiO 2 ) have an appropriate band gap to harvest visible range light . In another example, CuInS 2 quantum dots (QDs) as an efficient inorganic dye expanded the visible light absorption of TiO 2 .…”

Section: Energy Harvesting Materialsmentioning

confidence: 99%

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Advancements in Bio-inspired Self-Powered Wireless Sensors: Materials, Mechanisms, and Biomedical Applications

Farzin,

Naghib,

Rabiee

2024

ACS Biomater. Sci. Eng.

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The rapid maturation of smart city ecosystems is intimately linked to advances in the Internet of Things (IoT) and self-powered sensing technologies. Central to this evolution are battery-less sensors that are critical for applications such as continuous health monitoring through blood metabolites and vital signs, the recognition of human activity for behavioral analysis, and the operational enhancement of humanoid robots. The focus on biosensors that exploit the human body for energy-spanning wearable, attachable, and implantable variants has intensified, driven by their broad applicability in areas from underwater exploration to biomedical assays and earthquake monitoring. The heart of these sensors lies in their diverse energy harvesting mechanisms, including biofuel cells, and piezoelectric, triboelectric, and pyroelectric nanogenerators. Notwithstanding the wealth of research, the literature still lacks a holistic review that integrates the design challenges and implementation intricacies of such sensors. Our review seeks to fill this gap by thoroughly evaluating energy harvesting strategies from both material and structural perspectives and assessing their roles in powering an array of sensors for myriad uses. This exploration offers a comprehensive outlook on the state of self-powered sensing devices, tackling the nuances of their deployment and highlighting their potential to revolutionize data gathering in autonomous systems. The intent of this review is to chart the current landscape and future prospects, providing a pivotal reference point for ongoing research and innovation in selfpowered wireless sensing technologies.

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Section: ■ Energy Harvesting Materialsmentioning

confidence: 99%

Section: Energy Harvesting Materialsmentioning

confidence: 99%

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Advancements in Bio-inspired Self-Powered Wireless Sensors: Materials, Mechanisms, and Biomedical Applications

Farzin,

Naghib,

Rabiee

2024

ACS Biomater. Sci. Eng.

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“…This trend is similar to those found in some other reports which also combined Fe 3 O 4 with TiO 2 . [13,14]…”

Section: Properties Of Fe 3 O 4 @Tiomentioning

confidence: 99%

“…The combination of TiO 2 and Fe 3 O 4 should be one of the best choices for TiO 2 modification as it can simultaneously reduce the bandgap, increase the charge separation, and provide magnetic property. [10][11][12][13][14][15][16][17][18][19] Interestingly, TiO 2 /Fe 3 O 4 composites are also effective photocatalysts for the activation of peroxymonosulfate (PMS) to form sulfate radical (SO 4…”

mentioning

confidence: 99%

Treatment of textile dye wastewater by peroxymonosulfate activation using facilely prepared Fe₃O₄@TiO₂ heterogeneous photocatalyst

Thuy,

Tien,

Anh

et al. 2023

CLEAN Soil Air Water

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In this study, Fe3O4@TiO2 was synthesized by a facile precipitation–impregnation method and applied as a magnetic photocatalyst for degrading synthetic and actual textile dyeing wastewater in the presence of peroxymonosulfate (PMS). In Rhodamine B (RhB) degradation, the removal efficiency reached 99.86% (for RhB) and 93.67% (for color) under optimal operating conditions of 80 mg L–1 RhB, 0.5 g L–1 PMS, 0.5 g L–1 Fe3O4@TiO2, at pH 6, and after 30 min of UVA irradiation. The influence levels of anions on the RhB removal and decolorization were in the order of Cl− < SO42− < CO32− < PO43−. In addition, the Fe3O4@TiO2 composite exhibited good applicability for treating other dyes (e.g., 99.6% of tartrazine and 60.3% of methylene blue after 30 min) in water and actual textile dyeing wastewater with high color (70.3% after 5 min) and COD removal (71.4% after 120 min). The radical scavenging tests indicated the role of reactive oxygen species in the order of O2•− ∼ 1O2 > h+ > SO4•− > HO• for RhB degradation but O2•− > h+ > 1O2 > SO4•− > HO• for decolorization. These results suggest the potential application of PMS activation using Fe3O4@TiO2 in the photocatalytic treatment of textile and dyeing wastewater with the dominant role of O2•−.

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Metal Phthalocyanine Sensitized Photoelectrochemical Cell Assembling with Azide‐Functionalized Reduced Graphene and Quaternary Metal Chalcogenide Composites

Ezgi Varol,

Uğuz Neli,

Budak

et al. 2024

ChemElectroChem

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Here, photoelectrodes of photoelectrochemical (PEC) cells consisting of azide functionalized reduced graphene oxide (GO‐N3) and quaternary metal chalcogenide (CdZnNiSSe) composites sensitized with metal phthalocyanines (MPc, M: Co, Zn, Ti) are developed and then tested in hydrogen evolution reaction (HER). CdZnNiSSe/RGO‐N3 composite is deposited on an indium tin oxide (ITO) electrode through a facile electrodeposition technique and ITO/CdZnNiSSe/RGO‐N3 photoelectrode is constructed. Then, MPcs bearing terminal alkyne groups are connected to RGO‐N3 via the copper(I)‐catalyzed azide‐alkyne cycloaddition (click chemistry) technique to produce ITO/CdZnNiSSe/RGO‐N3‐MPc structures. Decoration of ITO/CdZnNiSSe/RGO‐N3 with MPcs is proposed to improve the charge transfer capability of the photoelectrode due to wide light absorption of MPcs from UV toward the IR region of the light spectrum. PECHER responses indicate that among the photoanodes bearing ZnPc, CoPc, and TiOPc, ITO/CdZnNiSSe/RGO‐N3‐ZnPc electrode exhibits the highest PECHER performance owing to the suitability of band structure of ZnPc. Sensitizing ITO/CdZnNiSSe/RGO‐N3 with ZnPc increases the photocurrent density from 5.0 to 7.3 mA cm−2 at 0.8 V vs. RHE and the applied bias photon to current efficiency (ABPE) enhances from 3.18 % to 3.87 %. This study provides a new approach for increasing the performance of photoanodes via sensitization with MPcs in photoelectrochemical hydrogen evolution processes for future applications.

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Enhanced photoelectrochemical activity of magnetically modified TiO2 prepared by a simple ex-situ route

Cited by 3 publications

References 59 publications

Advancements in Bio-inspired Self-Powered Wireless Sensors: Materials, Mechanisms, and Biomedical Applications

Advancements in Bio-inspired Self-Powered Wireless Sensors: Materials, Mechanisms, and Biomedical Applications

Treatment of textile dye wastewater by peroxymonosulfate activation using facilely prepared Fe₃O₄@TiO₂ heterogeneous photocatalyst

Metal Phthalocyanine Sensitized Photoelectrochemical Cell Assembling with Azide‐Functionalized Reduced Graphene and Quaternary Metal Chalcogenide Composites

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Enhanced photoelectrochemical activity of magnetically modified TiO2 prepared by a simple ex-situ route

Cited by 3 publications

References 59 publications

Advancements in Bio-inspired Self-Powered Wireless Sensors: Materials, Mechanisms, and Biomedical Applications

Advancements in Bio-inspired Self-Powered Wireless Sensors: Materials, Mechanisms, and Biomedical Applications

Treatment of textile dye wastewater by peroxymonosulfate activation using facilely prepared Fe3O4@TiO2 heterogeneous photocatalyst

Metal Phthalocyanine Sensitized Photoelectrochemical Cell Assembling with Azide‐Functionalized Reduced Graphene and Quaternary Metal Chalcogenide Composites

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Treatment of textile dye wastewater by peroxymonosulfate activation using facilely prepared Fe₃O₄@TiO₂ heterogeneous photocatalyst