Review on: Titanium Dioxide Applications

Haider, Adawiya J.; Jameel, Zainab N.; Al-Hussaini, Imad H.M.

doi:10.1016/j.egypro.2018.11.159

Cited by 400 publications

(181 citation statements)

References 24 publications

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“…(Scheme 1). The commonly known anatase and rutile forms of TiO 2 belong to the large bandgap semiconductors with bandgap energies of 3.2 and 3.0 eV, respectively [45]. However, chemical/structural modifications of TiO 2 can result in the decrease in the bandgap in such a way that TiO 2 could be effectively used for the transformation/degradation of environmental pollutants/contaminants under solar or visible light irradiation.…”

Section: Introductionmentioning

confidence: 99%

Recent Progress in the Abatement of Hazardous Pollutants Using Photocatalytic TiO2-Based Building Materials

et al. 2020

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Titanium dioxide (TiO2) has been extensively investigated in interdisciplinary research (such as catalysis, energy, environment, health, etc.) owing to its attractive physico-chemical properties, abundant nature, chemical/environmental stability, low-cost manufacturing, low toxicity, etc. Over time, TiO2-incorporated building/construction materials have been utilized for mitigating potential problems related to the environment and human health issues. However, there are challenges with regards to photocatalytic efficiency improvements, lab to industrial scaling up, and commercial product production. Several innovative approaches/strategies have been evolved towards TiO2 modification with the focus of improving its photocatalytic efficiency. Taking these aspects into consideration, research has focused on the utilization of many of these advanced TiO2 materials towards the development of construction materials such as concrete, mortar, pavements, paints, etc. This topical review focuses explicitly on capturing and highlighting research advancements in the last five years (mainly) (2014–2019) on the utilization of various modified TiO2 materials for the development of practical photocatalytic building materials (PBM). We briefly summarize the prospective applications of TiO2-based building materials (cement, mortar, concretes, paints, coating, etc.) with relevance to the removal of outdoor/indoor NOx and volatile organic compounds, self-cleaning of the surfaces, etc. As a concluding remark, we outline the challenges and make recommendations for the future outlook of further investigations and developments in this prosperous area.

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Section: Introductionmentioning

confidence: 99%

Recent Progress in the Abatement of Hazardous Pollutants Using Photocatalytic TiO2-Based Building Materials

et al. 2020

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“…Due to its unique set of properties, namely being inexpensive, environmentally benign, stability in aqueous media, recyclability and having favorable band energies, TiO 2 is an appealing material choice [2][3][4]. Moreover, its very flexible processability and intensively explored synthesis routes to modify its structure lead to a wide range of energy and environmental applications [5][6][7]. To name a few non-photocatalytic applications, these can be sensors [8,9], photovoltaic devices [10,11] and Li-ion batteries [12,13].…”

Section: Introductionmentioning

confidence: 99%

Multi-Layered Mesoporous TiO2 Thin Films: Photoelectrodes with Improved Activity and Stability

2019

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This work aims at the identification of porous titanium dioxide thin film (photo)electrodes that represent suitable host structures for a subsequent electrodeposition of plasmonic nanoparticles. Sufficient UV absorption and electrical conductivity were assured by adjusting film thickness and TiO 2 crystallinity. Films with up to 10 layers were prepared by an evaporation-induced self-assembly (EISA) method and layer-by-layer deposition. Activities were tested towards the photoelectrochemical oxidation of water under UV illumination. Enhanced activities with each additional layer were observed and explained with increased amounts of immobilized TiO 2 and access to more active sites as a combined effect of increased surface area, better crystallinity and improved transport properties. Furthermore, films display good electrochemical and mechanical stability, which was related to the controlled intermediate thermal annealing steps, making these materials a promising candidate for future electrochemical depositions of plasmonic noble metal nanoparticles that has been further demonstrated by incorporation of gold.

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“…There is a consensus that ENPs can either increase, decrease or have no effect on the trace metal bioavailability and toxic effect depending on the feeding pattern of the organisms (e.g., "particle-proof" or "particle-ingestive" organism). Among the metallic ENPs, the most studied is TiO 2 NPs given its wide use [156,157], and among the metallic pollutants Cd(II) due to its high toxicity [158]. All the studies that analyzed the joint action of defined mixtures were combinations of only 2 components-ENPs and one metallic pollutant.…”

Section: Discussionmentioning

confidence: 99%

Effects of Mixtures of Engineered Nanoparticles and Metallic Pollutants on Aquatic Organisms

Liu

Slaveykova

2020

Environments

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In aquatic environment, engineered nanoparticles (ENPs) are present as complex mixtures with other pollutants, such as trace metals, which could result in synergism, additivity or antagonism of their combined effects. Despite the fact that the toxicity and environmental risk of the ENPs have received extensive attention in the recent years, the interactions of ENPs with other pollutants and the consequent effects on aquatic organisms represent an important challenge in (nano)ecotoxicology. The present review provides an overview of the state-of-the-art and critically discusses the existing knowledge on combined effects of mixtures of ENPs and metallic pollutants on aquatic organisms. The specific emphasis is on the adsorption of metallic pollutants on metal-containing ENPs, transformation and bioavailability of ENPs and metallic pollutants in mixtures. Antagonistic, additive and synergistic effects observed in aquatic organisms co-exposed to ENPs and metallic pollutants are discussed in the case of “particle-proof” and “particle-ingestive” organisms. This knowledge is important in developing efficient strategies for sound environmental impact assessment of mixture exposure in complex environments.

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Review on: Titanium Dioxide Applications

Cited by 400 publications

References 24 publications

Recent Progress in the Abatement of Hazardous Pollutants Using Photocatalytic TiO2-Based Building Materials

Recent Progress in the Abatement of Hazardous Pollutants Using Photocatalytic TiO2-Based Building Materials

Multi-Layered Mesoporous TiO2 Thin Films: Photoelectrodes with Improved Activity and Stability

Effects of Mixtures of Engineered Nanoparticles and Metallic Pollutants on Aquatic Organisms

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