Recent advances in photocatalytic carbon-based materials for enhanced water splitting under visible-light irradiation

Sahani, Shalini; Tripathi, Kumud Malika; Lee, Tae Il; Dubal, Deepak P.; Wong, Ching-Ping; Sharma, Yogesh Chandra; Kim, Tae Young

doi:10.1016/j.enconman.2021.115133

Cited by 62 publications

(19 citation statements)

References 187 publications

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“…Much effort has been devoted to the realization of autonomous self-powered devices, mainly through the coupling of energy storage devices such as batteries or supercapacitors with energy harvesting approaches such as piezoelectric, triboelectric, and fluidic-electric nanogenerators. − However, these devices provide intermittent power supply for the charging of energy storage devices because of the frequent unavailability of such energy resources. Furthermore, the coupling of energy harvesting and storage devices leads to complex system designs and limited lifetimes (∼100 cycles). ,, Although this issue can be mitigated to some extent with the development of materials and devices that can efficiently harvest energy from the vicinity and store it, a complete resolution is still awaited. − A fundamental solution to this challenge could be the utilization of naturally abundant and sustainable energy resources in air. Inspired by aerial respiration, the use of chemical energy stored in aerial oxygen by appropriate inanimate mimicking would endow metal–air batteries with simultaneous energy harnessing and storage functions without the need for external biases.…”

Section: Introductionmentioning

confidence: 99%

Biomass-Based Functionalized Graphene for Self-Rechargeable Zinc–Air Batteries

Das

Hwang

Jang

et al. 2022

ACS Appl. Energy Mater.

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Commercial batteries are typically charged with electrical power systems and consume electrical energy for recharging. Chemically self-charging batteries are a class of electrochemical devices that use chemical reactions to recharge batteries without electrical grids. Herein, we report the fabrication of a self-rechargeable zinc–air battery that is capable of simultaneously harnessing and storing energy based on biomass-derived functionalized graphene nanosheets (f-GNS). The chemical energy was harnessed into electric power by the spontaneous and reversible redox reactions between the f-GNS and atmospheric oxygen. This enables the fabrication of an energy storage device capable of self-charging without using any catalyst or organic dye. For the realization of integrated energy harvesting, conversion, and storage by a facile and sustainable approach, the f-GNS synthesized by the hydrothermal carbonization of pears followed by mild acid oxidation was used as the active material in an alkaline solution. The self-rechargeable zinc–air battery delivered an initial open circuit voltage of ∼1.15 V and a maximum instantaneous peak power density of ∼250 mW cm–2. The zinc–air batteries can charge themselves at rest in 15 min and exhibit high reversibility and excellent durability over prolonged charge and discharge cycles. When connected in series and parallel, the zinc–air batteries can offer the desired voltage and current, respectively, for practical applications. This work opens an avenue for further advancement in the design of self-sustainable, next-generation aqueous zinc–air batteries for practical applications.

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Section: Introductionmentioning

confidence: 99%

Biomass-Based Functionalized Graphene for Self-Rechargeable Zinc–Air Batteries

Das

Hwang

Jang

et al. 2022

ACS Appl. Energy Mater.

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“…28 For future sustainability, natural bio-resources, waste material, and pollutant soot-derived nano-carbons constitute an important aspect in wide applications with economic advantages. [29][30][31] The exploration of sustainable nano-carbons have enriched the nanozyme field with potential applications of different components and structures in a cost-effective and environmentally friendly manner.…”

Section: Introductionmentioning

confidence: 99%

Prospects of nano-carbons as emerging catalysts for enzyme-mimetic applications

et al. 2022

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“…Photocatalysis is overwhelmingly superior because of the high degradation rate, negligible generation of toxic byproducts, nonselectivity, simple operation, and eco-friendliness. , Generally, in photocatalysis, the bombarding of photogenerated photons to organic contaminants in the presence of catalyst generates charge carriers, which triggers the formation of ROS to mineralize toxic organic molecules into small nontoxic entities. ,, There is negligible generation of toxic byproducts and sludge in photocatalysis, and both soluble and insoluble contaminants can be treated. The degradation efficiency, quantum yield, short lifetime of photogenerated charge carriers, and low utilization of visible light are significant constraints in the photocatalytic degradation process. − Therefore, enhancement of visible light harvesting and lifetime of photogenerated charge carriers gained extensive research attention.…”

Section: Ferrite Based Nanostructures For the Removal Of Nitroaromaticsmentioning

confidence: 99%

Research Progress and Prospects of Spinel Ferrite Nanostructures for the Removal of Nitroaromatics from Wastewater

Bhaduri

Dikshit

Kim

et al. 2022

ACS Appl. Nano Mater.

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Spinel ferrite nanostructures have played significant roles in the development of materials science and technology. Spinel ferrite nanostructures possess not only promising magnetic properties but also high resistivity, stability, and low eddy current losses. The recent progress in the utilization of spinel ferrite nanostructures for water remediation is reviewed with special emphasis on the adsorption, transformation, degradation, and catalytic reduction of nitroaromatics. Then, the structure–property relationships and design considerations of spinel ferrite nanostructures for catalytic applications are discussed in detail. Insights into the details of the various removal processes on the model spinel ferrite nanostructures are provided with a basic concept of nitroaromatics remediation. Subsequently, reaction kinetics and mechanisms are classified and their advantages and disadvantages are described. Lastly, challenges and future perspectives of spinel ferrite nanostructures for their practical applications are presented. With further advancement, spinel ferrites have potential to be practically utilized for a wide range of applications such as water treatment plants.

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Recent advances in photocatalytic carbon-based materials for enhanced water splitting under visible-light irradiation

Cited by 62 publications

References 187 publications

Biomass-Based Functionalized Graphene for Self-Rechargeable Zinc–Air Batteries

Biomass-Based Functionalized Graphene for Self-Rechargeable Zinc–Air Batteries

Prospects of nano-carbons as emerging catalysts for enzyme-mimetic applications

Research Progress and Prospects of Spinel Ferrite Nanostructures for the Removal of Nitroaromatics from Wastewater

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