Harvesting Solar Energy Using Inexpensive and Benign Materials

Lee, Susannah; Vandiver, Melissa; Viswanathan, B.; Subramanian, Vaidyanathan

doi:10.1007/978-1-4419-7991-9_32

Cited by 4 publications

(2 citation statements)

References 154 publications

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“…Since then there have been several applications that have evolved around the use of solar energy as a primary power source. 1 Figure 2 provides a comprehensive list of efforts that are currently being pursued to harness energy from the Sun. This article focuses on the use of the Sun's energy for electricity generation.…”

Section: Evolution Of the Use Of Solar Energymentioning

confidence: 99%

With Photovoltaics, Solar Energy Is Here to Stay

Subramanian¹,

Pathak²

2018

Electrochem. Soc. Interface

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Solar power is an omnipresent and ubiquitous form of natural energy that has tremendous potential. Harnessing solar energy has been a well-meaning intent of mankind since ages and continues to be an attractive option for meeting our ever increasing energy needs. Among the different forms of solar energy used today photovoltaic technologies are at the forefront. Beginning with silicon solar cells which largely represent first generation photovoltaics, the area has exploded into a full-fledged field. The second and third generation cells comprise of several new material classes vying for attention and offering tantalizing possibilities. These include (and not limited to) organic dyes, quantum dots, polymers, and organic perovskites. State-of-art research in all of these areas has now made it possible to produce electricity economically and look at the commercial potential of many of these material classes. With global climate change a reality, it is imperative that these technologies are fostered and adapted universally for a sustainable future.

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Section: Evolution Of the Use Of Solar Energymentioning

confidence: 99%

With Photovoltaics, Solar Energy Is Here to Stay

Subramanian¹,

Pathak²

2018

Electrochem. Soc. Interface

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“…Solar energy is a readily available and free resource that may be used to deliver energy to industries as a viable alternative to fossil fuels. Other technologies, such as photocatalysis, photovoltaics, smart materials and environmental purification, have been used with solar energy [1][2][3][4]. The production of hydrocarbon fuel such as methanol and dimethyl ether by photocatalysis technology has been studied in last decade [5].…”

Section: Introductionmentioning

confidence: 99%

Advances in metal-based vanadate compound photocatalysts: synthesis, properties and applications

Akhoondi

Feleni

Bethi³

et al. 2021

Synth. Sinter.

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Among the ongoing research on photocatalysis under visible-light, it has been shown that doped or hybrid catalysts are more active than a single catalyst alone. However, problems including visible light absorption, a low quantity of energetic sites on surfaces, and rapid recombination of the photo-electron hole pair produced by light have prohibited photocatalysts from being used in a practical and widespread manner. To overcome these problems, synthesis of nanostructure hybrid catalyst using several methods has attracted much attention. Several procedures have been suggested for the preparation of photocatalysts with the desired structure and morphology. Preparation methods similar to partial modification may lead to diverse structures and qualities. In this regard, the development of efficient, low-cost photocatalysts and rapid synthesis is the most important issues that should be considered. This review discusses various methods and mechanisms that work with the modification of vanadium compounds as photocatalysts to progress their photocatalytic efficiency. In addition, the effects of synthesis temperature, solution pH and concentration on the photocatalytic performance are also described in detail.

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Hybrid Amino Acid‐TiO₂ Materials with Tuneable Crystalline Structure and Morphology for Photocatalytic Applications

Sarigul

Chamorro-Mena

Linares

et al. 2021

Advanced Sustainable Systems

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TiO 2 (A), presents remarkable properties under UV light, which are very useful in photo-oxidation reactions. Some of these are, its chemical stability, low cost, availability, and low toxicity. [2] However, as it is widely known, it presents limited photoactivity under visible light. We have recently described a novel strategy, based on the in situ incorporation of organic moieties or metallic complexes during the synthesis of titania, which drastically enhances its photocatalytic efficiency under sunlight irradiation. [3][4][5][6] By using this strategy, a series of visible light-activated hybrid anatase nanoparticles have been produced by the in situ incorporation of organic compounds such as p-phenylenediamime, as well as Ru(II) or Ir(III) complexes, among others, to titania, using water and ethanol as solvents. [3][4][5] This methodology yields materials with a reduced band gap, absorption edges in the visible light, and outstanding stability; all of these features synergistically contributing to enhancing their photoactivity. [3][4][5][6] Furthermore, the integration of our hybrid titania containing the Ru(II) N3 dye into a photoelectrode of a low-temperature dye-sensitized solar cells (lt-DSSC) yielded the highest efficiency reported to date for titania-based lt-DSSCs (8.75%). [7] Very recently, we have reported the first biphasic rutilebrookite organotitania nanoparticles synthesized under mild conditions using 1,10-phenanthroline as both crystal modifier and as a source of intermediate N2p levels. Owing to these features, the hybrid organotitanias exhibit outstanding photocatalytic activity under visible light irradiation. [6] In light of these results, we decided to extend our approach to other morphologies and synthetic conditions, by incorporating other organic compounds. In this contribution, we report the synthesis, characterization, and catalytic testing of a series of hybrid amino acid-titania anatase nanoparticles and rutile nanorods with enhanced photo catalytic activity under visible light irradiation.Amino acids can be effectively incorporated in titania by coordinating their amine and carboxylic groups to the titanium atom of the titania precursor. [8,9] In fact, different amino acids have been used as shape-modifiers in the synthesis of brookite and rutile titanias, prepared with titanium metal powder and ammonia solutions. [8] The photodeposition of Pt co-catalyst on the surface of the as-synthesized brookite particles led A method to produce hybrid organotitanias, both as thin films and suspensions, showing excellent photocatalyic activity in the degradation of organic dyes in aqueous solutions under visible light irradiation is disclosed. This method is based on the in situ incorporation of an amino acid, l-tyrosine, during the synthesis of the titanias owing to its coordination and co-condensation with the titania precursor under acidic conditions. This methodology allows the fine -tuning of their crystalline structure, size, and shape by simply varying the pH of the synthesis gel, leadi...

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Harvesting Solar Energy Using Inexpensive and Benign Materials

Cited by 4 publications

References 154 publications

With Photovoltaics, Solar Energy Is Here to Stay

With Photovoltaics, Solar Energy Is Here to Stay

Advances in metal-based vanadate compound photocatalysts: synthesis, properties and applications

Hybrid Amino Acid‐TiO₂ Materials with Tuneable Crystalline Structure and Morphology for Photocatalytic Applications

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Harvesting Solar Energy Using Inexpensive and Benign Materials

Cited by 4 publications

References 154 publications

With Photovoltaics, Solar Energy Is Here to Stay

With Photovoltaics, Solar Energy Is Here to Stay

Advances in metal-based vanadate compound photocatalysts: synthesis, properties and applications

Hybrid Amino Acid‐TiO2 Materials with Tuneable Crystalline Structure and Morphology for Photocatalytic Applications

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Product

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Hybrid Amino Acid‐TiO₂ Materials with Tuneable Crystalline Structure and Morphology for Photocatalytic Applications