Extraordinarily high hydrogen-evolution-reaction activity of corrugated graphene nanosheets derived from biomass rice husks

Sekar, Sankar; Sim, Dae Hyun

doi:10.1016/j.ijhydene.2022.02.233

Cited by 28 publications

(16 citation statements)

References 62 publications

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“…5d-e). Similar results reported by the same group also indicate that rice husks-derived graphene nanosheets prepared at a higher temperature (700 °C) with a relatively higher crystallinity exhibit better HER activities [99]. However, not all reports follow this synthesis temperature-HER 1 3…”

Section: Waste-derived Carbon Catalysts For Hermentioning

confidence: 55%

Waste-Derived Catalysts for Water Electrolysis: Circular Economy-Driven Sustainable Green Hydrogen Energy

Chen

Yun

et al. 2022

Nano-Micro Lett.

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The sustainable production of green hydrogen via water electrolysis necessitates cost-effective electrocatalysts. By following the circular economy principle, the utilization of waste-derived catalysts significantly promotes the sustainable development of green hydrogen energy. Currently, diverse waste-derived catalysts have exhibited excellent catalytic performance toward hydrogen evolution reaction (HER), oxygen evolution reaction (OER), and overall water electrolysis (OWE). Herein, we systematically examine recent achievements in waste-derived electrocatalysts for water electrolysis. The general principles of water electrolysis and design principles of efficient electrocatalysts are discussed, followed by the illustration of current strategies for transforming wastes into electrocatalysts. Then, applications of waste-derived catalysts (i.e., carbon-based catalysts, transitional metal-based catalysts, and carbon-based heterostructure catalysts) in HER, OER, and OWE are reviewed successively. An emphasis is put on correlating the catalysts’ structure–performance relationship. Also, challenges and research directions in this booming field are finally highlighted. This review would provide useful insights into the design, synthesis, and applications of waste-derived electrocatalysts, and thus accelerate the development of the circular economy-driven green hydrogen energy scheme.

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Section: Waste-derived Carbon Catalysts For Hermentioning

confidence: 55%

Waste-Derived Catalysts for Water Electrolysis: Circular Economy-Driven Sustainable Green Hydrogen Energy

Chen

Yun

et al. 2022

Nano-Micro Lett.

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“…In addition to F 2g , the AC-CeO 2 nanocomposites display two additional Raman bands at 1345 and 1599 cm −1 , which are denoted by D and G bands, respectively. The G band originates the E 2g vibration mode of the sp 2 -hybridized carbon, and the D band sprouts from the defective and disordered features of graphite structures [66] , [67] , [68] , [69] , [70] . Such a simultaneous observation of F 2g and D/G depicts an effective hybridization of CeO 2 and AC in a nanocomposite system.…”

Section: Resultsmentioning

confidence: 99%

Enhanced photocatalytic crystal-violet degradation performances of sonochemically-synthesized AC-CeO2 nanocomposites

Sekar

Bathula

Rabani

et al. 2022

Ultrasonics Sonochemistry

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“…Sekar et al prepared rice-husk-derived corrugated graphene (RH–CG) nanosheets via the KOH activation method with different temperatures (600–700 °C) using the biomass source of red rice husks, with the schematic illustration of the synthetic processes shown in Figure a. The HER performance of RH–CG-700 is far superior to that of RH–CG-600, with a small overpotential of 9 mV at 10 mA cm –2 and a small Tafel slope of 31 mV dec –1 (Figure b) . The excellent performance of RH–CG-700 can be attributed to the interconnect morphology and high porosity as well as the high degree of graphitization in the mesoporous structure.…”

Section: Applications In the Hydrogen Evolution Reactionmentioning

confidence: 99%

“…(a) Schematic illustration of the synthetic processes of the RH–CG nanosheets via the KOH activation method using the biomass source of red rice husks and (b) HER performance for RH–CG-600 and RH–CG-700. This figure was reproduced with permission from ref . Copyright 2022 Elsevier.…”

Section: Applications In the Hydrogen Evolution Reactionmentioning

confidence: 99%

Review on Biomass-Derived Carbon-Based Materials for Electrocatalytic Hydrogen Production: State of the Art and Outlook

Li,

Lu,

Fang

et al. 2023

Energy Fuels

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The increasing demand for sustainable hydrogen production is driven by the rapid expansion of global energy consumption. Electrocatalytic H 2 production is one of the preferred methods for future energy technology. The hydrogen evolution reaction (HER) has attracted extensive attention as an important half-reaction for traditional water electrolysis. However, cost-effective and efficient electrode materials for HER are scarce. Biomass-derived carbon-based materials could offer a promising solution by utilizing biomass waste through rational engineering design, which can address biomass pollution but also enable the synthesis of effective electrocatalytic materials, aligning with the principles of green chemistry. This study provides a comprehensive review of multiple synthetic methods for producing carbon-based materials from biomass, such as pyrolysis, hydrothermal carbonization, ionothermal carbonization, and molten salt carbonization. The diverse applications of these materials in H 2 production are explored. Effective treatment strategies and valuable insights for future biomass-derived carbon-based material design in H 2 production are also presented. This progress contributes to a better understanding of these materials and offers valuable insights for future explorations.

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Extraordinarily high hydrogen-evolution-reaction activity of corrugated graphene nanosheets derived from biomass rice husks

Cited by 28 publications

References 62 publications

Waste-Derived Catalysts for Water Electrolysis: Circular Economy-Driven Sustainable Green Hydrogen Energy

Waste-Derived Catalysts for Water Electrolysis: Circular Economy-Driven Sustainable Green Hydrogen Energy

Enhanced photocatalytic crystal-violet degradation performances of sonochemically-synthesized AC-CeO2 nanocomposites

Review on Biomass-Derived Carbon-Based Materials for Electrocatalytic Hydrogen Production: State of the Art and Outlook

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