Nanohybrid of titania/carbon nanotubes – nanohorns: A promising photocatalyst for enhanced hydrogen production under solar irradiation

MamathaKumari, M.; Kumar, D. Praveen; Haridoss, Prathap; Durgakumari, Valluri; Shankar, M.V.

doi:10.1016/j.ijhydene.2014.11.117

Cited by 59 publications

(19 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Apart from that, it is also used in synthesizing materials like ZnO-graphene hybrid nanostructure, TiO 2 /C having spherical morphology, multiwalled carbon nanotubes (MWCNTs), single-walled carbon nanohorns (SWCNHs), and multiwalled carbon nanohorns (MWCNHs) having fine well defined and straight walls, hexagonal wurtzite ZnO, and rutile TiO 2 consisting of nanorods and nanospherical structures, etc. [184][185][186][187].…”

Section: Arc Dischargementioning

confidence: 99%

A review on the progress of nanostructure materials for energy harnessing and environmental remediation

et al. 2018

View full text Add to dashboard Cite

The nanostructured materials offer various advantages as they provide more flexible space for ease reconstruction, as their nanosize expands the limits and results in confinement effect, enhanced mechanical stability, and large surface area, and make them suitable for photocatalytic activities. The advancement in synthesis techniques provides the freedom to alter its physical properties as per the demand. This article provides a 360° view point on the nanomaterials which are used for solar energy harnessing with respect to environmental and energy application. The discussion emphasizes on various synthesis methods of nanostructured materials, their mechanistic features, usage in demanding applications such as photosplitting of water for hydrogen production, artificial photosynthesis, and water and wastewater treatment with an endnote highlighting the future scope of nanomaterials for real-world applications.

show abstract

Section: Arc Dischargementioning

confidence: 99%

A review on the progress of nanostructure materials for energy harnessing and environmental remediation

et al. 2018

View full text Add to dashboard Cite

show abstract

“…In the last 25 years, the emergence of carbon-based nanomaterials has opened new ways of harvesting solar energy and generation of clean energy in the form of hydrogen [ 20 – 21 ]. Carbon is one of the most abundant elements on the earth.…”

Section: Reviewmentioning

confidence: 99%

Two-dimensional carbon-based nanocomposites for photocatalytic energy generation and environmental remediation applications

Kumar¹,

Kumar²,

Bahuguna³

et al. 2017

Beilstein J. Nanotechnol.

137

View full text Add to dashboard Cite

In the pursuit towards the use of sunlight as a sustainable source for energy generation and environmental remediation, photocatalytic water splitting and photocatalytic pollutant degradation have recently gained significant importance. Research in this field is aimed at solving the global energy crisis and environmental issues in an ecologically-friendly way by using two of the most abundant natural resources, namely sunlight and water. Over the past few years, carbon-based nanocomposites, particularly graphene and graphitic carbon nitride, have attracted much attention as interesting materials in this field. Due to their unique chemical and physical properties, carbon-based nanocomposites have made a substantial contribution towards the generation of clean, renewable and viable forms of energy from light-based water splitting and pollutant removal. This review article provides a comprehensive overview of the recent research progress in the field of energy generation and environmental remediation using two-dimensional carbon-based nanocomposites. It begins with a brief introduction to the field, basic principles of photocatalytic water splitting for energy generation and environmental remediation, followed by the properties of carbon-based nanocomposites. Then, the development of various graphene-based nanocomposites for the above-mentioned applications is presented, wherein graphene plays different roles, including electron acceptor/transporter, cocatalyst, photocatalyst and photosensitizer. Subsequently, the development of different graphitic carbon nitride-based nanocomposites as photocatalysts for energy and environmental applications is discussed in detail. This review concludes by highlighting the advantages and challenges involved in the use of two-dimensional carbon-based nanocomposites for photocatalysis. Finally, the future perspectives of research in this field are also briefly mentioned.

show abstract

“…Bioethanol yield and conversion efficiency depend upon the raw material [6,7]. Among the different types of biomass used to obtain bioethanol, algae have received considerable attention because of their advantages: they are easy to be cultivated in fresh and salt water, and even in wastewater [8], which is a clean and cheap alternative for the treatment of this Energies 2021, 14, 5891 2 of 10 kind of water; they are fed with energy provided from the sun, water, nutrients and carbon dioxide [9]; the algae have a low concentration of hemicellulose and lignin [10]. These polymers are connected strongly through covalent and hydrogen bonds.…”

Section: Introductionmentioning

confidence: 99%

Microwave Assisted Alkaline Pretreatment of Algae Waste in the Production of Cellulosic Bioethanol

Maceiras

Alfonsín

Seguí³

et al. 2021

Energies

View full text Add to dashboard Cite

Biomass pretreatment has an important role in the production of cellulosic bioethanol. In this study, the effectiveness of microwave assisted alkaline pretreatment of algae waste was analysed. After pretreatment, the product was hydrolysed using sulphuric acid. The effects of microwave power, irradiating time, solid–liquid ratio and NaOH concentration were examined. Under the best conditions, the fermentable sugars were converted to cellulosic bioethanol using Saccharomyces Cerevisiae with a bioethanol yield of 1.93 ± 0.01 g/g and a fermentation efficiency of 40.4%. The reducing sugars concentration was 30% higher than that obtained from conventional hydrolysis without pretreatment. The obtained results suggest that microwave assisted alkaline pretreatment is effective in improving the production of cellulosic bioethanol of algae waste compared to that without microwave effect. Considering energy consumption, low microwave power and short microwave irradiation time are favourable for this pretreatment.

show abstract

Nanohybrid of titania/carbon nanotubes – nanohorns: A promising photocatalyst for enhanced hydrogen production under solar irradiation

Cited by 59 publications

References 38 publications

A review on the progress of nanostructure materials for energy harnessing and environmental remediation

A review on the progress of nanostructure materials for energy harnessing and environmental remediation

Two-dimensional carbon-based nanocomposites for photocatalytic energy generation and environmental remediation applications

Microwave Assisted Alkaline Pretreatment of Algae Waste in the Production of Cellulosic Bioethanol

Contact Info

Product

Resources

About