Titanium dioxide nanomaterials in electrocatalysis for energy

Lavacchi, Alessandro; Bellini, Marco; Berretti, Enrico; Chen, Yan‐Xin; Marchionni, Andrea; Vizza, Francesco

doi:10.1016/j.coelec.2021.100720

Cited by 32 publications

(26 citation statements)

References 58 publications

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“…The cathodic reactions are often sluggish within the electrochemical processes and transition metal (TM) based electrocatalysts are considered attractive alternatives. 57 In this context, increasing interest for TiO 2 in electrocatalysis has recently emerged 58 due to its commercial availability, low cost, non-toxicity, and its high thermal and chemical stability. Furthermore, TiO 2 is a n-type material with oxygen vacancies that determine its physicochemical properties, enabling to engineer its catalytic properties by modulating the oxygen vacancy density.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of 2D anatase TiO₂ with highly reactive facets by fluorine-free topochemical conversion of 1T-TiS₂ nanosheets

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Section: Resultsmentioning

confidence: 99%

Synthesis of 2D anatase TiO₂ with highly reactive facets by fluorine-free topochemical conversion of 1T-TiS₂ nanosheets

et al. 2022

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“…An optimal composition was experimentally determined as 50% ( Supplementary Figure S3 ). Chelating/complex agents were introduced to further stabilize Ti(III) species ( Lavacchi et al, 2021 ). The oxalic acid was selected based on both the coating coverage and photocurrent of the product.…”

Section: Resultsmentioning

confidence: 99%

Room Temperature Electrodeposition of Ready-to-Use TiOx for Uniform p-n Heterojunction Over Nanoarchitecture

et al. 2022

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The photocathodes are essential in photoelectrochemical systems for harvesting solar energy as green fuels. However, the light-absorbing p-type semiconductor in them usually suffers from carrier recombination issues. An effective strategy to address it is fabricating the p-n heterojunction to create an interfacial electric field. However, plenty of deposition process of the n-type layer for this purpose requires either sophisticated instruments or subsequent treatments, which may damage the vulnerable p-type structure. Herein, we report a mild approach for a ready-to-use n-type layer with full functionality. Structural analyses proved the successful coating of a uniform titania layer (up to 40 nm) over Cu2O without damaging its structure. Owing to the high Ti3+ content, the layer possesses excellent charge transport ability and requires no additional annealing. The heterojunction effectively facilitates the carrier separation and positively shifts the photocurrent onset potential for 0.2 V. The Mott–Schottky plot and the impedance study reveal an enhanced carrier collection with reduced charge transfer resistances. Such a nano-heterojunction can be further loaded with the hydrogen evolution catalyst, which almost doubles the photocurrent with an extended lifetime than that of the pristine Cu2O nanoarray. This approach puts forward a potentially scalable and efficient choice for fabricating photoelectrochemical devices.

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“…In recent years, researchers have developed several routes to obtain high surface area nanostructured titanium dioxide. These nanostructures were used for several applications as supports, among others, for the fabrication of several electrochemical energy conversion and storage devices [107] or for selective catalytic processes toward chemical production from biomass sources [108]. Among biomass sources, furfural is a fundamental chemical obtained from ligneous feedstocks and serves as a versatile model compound for the synthesis multifunctional molecules (Figure 6).…”

Section: Titaniamentioning

confidence: 99%

Support–Activity Relationship in Heterogeneous Catalysis for Biomass Valorization and Fine-Chemicals Production

et al. 2021

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Heterogeneous catalysts are progressively expanding their field of application, from high-throughput reactions for traditional industrial chemistry with production volumes reaching millions of tons per year, a sector in which they are key players, to more niche applications for the production of fine chemicals. These novel applications require a progressive utilization reduction of fossil feedstocks, in favor of renewable ones. Biomasses are the most accessible source of organic precursors, having as advantage their low cost and even distribution across the globe. Unfortunately, they are intrinsically inhomogeneous in nature and their efficient exploitation requires novel catalysts. In this process, an accurate design of the active phase performing the reaction is important; nevertheless, we are often neglecting the importance of the support in guaranteeing stable performances and improving catalytic activity. This review has the goal of gathering and highlighting the cases in which the supports (either derived or not from biomass wastes) share the worth of performing the catalysis with the active phase, for those reactions involving the synthesis of fine chemicals starting from biomasses as feedstocks.

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Titanium dioxide nanomaterials in electrocatalysis for energy

Cited by 32 publications

References 58 publications

Synthesis of 2D anatase TiO₂ with highly reactive facets by fluorine-free topochemical conversion of 1T-TiS₂ nanosheets

Synthesis of 2D anatase TiO₂ with highly reactive facets by fluorine-free topochemical conversion of 1T-TiS₂ nanosheets

Room Temperature Electrodeposition of Ready-to-Use TiOx for Uniform p-n Heterojunction Over Nanoarchitecture

Support–Activity Relationship in Heterogeneous Catalysis for Biomass Valorization and Fine-Chemicals Production

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Titanium dioxide nanomaterials in electrocatalysis for energy

Cited by 32 publications

References 58 publications

Synthesis of 2D anatase TiO2 with highly reactive facets by fluorine-free topochemical conversion of 1T-TiS2 nanosheets

Synthesis of 2D anatase TiO2 with highly reactive facets by fluorine-free topochemical conversion of 1T-TiS2 nanosheets

Room Temperature Electrodeposition of Ready-to-Use TiOx for Uniform p-n Heterojunction Over Nanoarchitecture

Support–Activity Relationship in Heterogeneous Catalysis for Biomass Valorization and Fine-Chemicals Production

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Synthesis of 2D anatase TiO₂ with highly reactive facets by fluorine-free topochemical conversion of 1T-TiS₂ nanosheets

Synthesis of 2D anatase TiO₂ with highly reactive facets by fluorine-free topochemical conversion of 1T-TiS₂ nanosheets