Facile synthesis of graphitic carbon nitride/chitosan/Au nanocomposite: A catalyst for electrochemical hydrogen evolution

Nasri, Atefeh; Jaleh, Babak; Khazalpour, Sadegh; Nasrollahzadeh, Mahmoud; Shokouhimehr, Mohammadreza

doi:10.1016/j.ijbiomac.2020.08.143

Cited by 79 publications

(27 citation statements)

References 64 publications

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“…g-C 3 N 4 was prepared by heating urea (20 g) in electric oven at 550 °C for 3 h as has been reported in our previous works [ 20 , 23 ]; about 1 g of produced yellowish material, g-C 3 N 4 termed as CN. In order to exfoliate CN, the ensuing powder was ground with agate mortar and then was positioned in the crucible devoid of any cover and heated at 550 °C with heating speed of 3 °C/min for 3 h. As a result of this process, approximately 0.1 g of light milky powder was achieved, which was named as CNN (g-C 3 N 4 nanosheets).…”

Section: Methodsmentioning

confidence: 99%

“…Notwithstanding the chemical methods, laser ablation in liquid (LAL) is an important physical method that produces colloidal nanoparticles from bulk materials, i.e., using a top-down route. It is a facile approach to form nano-size particles in large amounts, in which the nanoparticles have significant stability without any added surfactant in a liquid environment [ 20 , 21 ]. Moreover, the nanoparticles’ features can be controlled through appropriate laser parameters and a liquid medium [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

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Sensing Properties of g-C3N4/Au Nanocomposite for Organic Vapor Detection

et al. 2023

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Alleviating the increasingly critical environmental pollution problems entails the sensing of volatile organic compounds (VOCs) as a hazardous factor for human health wherein the development of gas sensor platforms offers an efficient strategy to detect such noxious gases. Nanomaterials, particularly carbon-based nanocomposites, are desired sensing compounds for gas detection owing to their unique properties, namely a facile and affordable synthesis process, high surface area, great selectivity, and possibility of working at room temperature. To achieve that objective, g-C3N4 (graphitic carbon nitride) was prepared from urea deploying simple heating. The ensuing porous nanosheets of g-C3N4 were utilized as a substrate for loading Au nanoparticles, which were synthesized by the laser ablation method. g-C3N4 presented a sensing sensitivity toward organic vapors, namely methanol, ethanol, and acetone vapor gases, which were significantly augmented in the presence of Au nanoparticles. Specifically, the as-prepared nanocomposite performed well with regard to the sensing of methanol vapor gas and offers a unique strategy and highly promising sensing compound for electronic and electrochemical applications.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sensing Properties of g-C3N4/Au Nanocomposite for Organic Vapor Detection

et al. 2023

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“…107 Appropriately, the modification of Au nanoparticle−CN hybrids for the HER was performed using chitosan, which efficiently decreased the aggregation of Au nanoparticles and increased both the stability and the catalytic activity of the C x N y structures. 108…”

Section: Various Properties Of C X N Y -Based Materialsmentioning

confidence: 99%

“…Moreover, remarkable chemical stability was measured for g-C 3 N 4 structures, for instance, in response to acid corrosion and alkaline solutions. , Stable aqueous dispersions of g-C 3 N 4 are also ascribed to its negative surface charge depriving the solutions of aggregation. , Although the addition of nanoparticles, such as Au, for catalytic modification may require an intermediate to regulate the stability, biopolymers are economical and available compounds applied for dye removal, heavy metal ion removal, and other environmental and industrial applications that are ideal candidates for this purpose . Appropriately, the modification of Au nanoparticle–CN hybrids for the HER was performed using chitosan, which efficiently decreased the aggregation of Au nanoparticles and increased both the stability and the catalytic activity of the C x N y structures …”

Section: Various Properties Of C X N Y -Based Materialsmentioning

confidence: 99%

Advances in Carbon Nitride-Based Materials and Their Electrocatalytic Applications

et al. 2022

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As a group of large-surface-area nonmetal materials, polymeric carbon nitride (C x N y ) and its hybrid structures are nowadays of ever-increasing interest for use in energy devices involved in energy conversion and storage, offering low expenses and facile production processes. With the growing requirement for clean and renewable energy generation and storage systems, progress in the replacement of expensive noble-metal catalysts with C x N y -based materials as efficient electrocatalysts has expanded considerably, and the demand for these materials has increased. The modified C x N y architectures are beneficial to electrocatalytic applications, improving their moderate electrical conductivities and capacity loss. The present review strives to highlight the recent advances in the research on the aforementioned identities of C x N y -derived materials and their structurally modified polymorphs. This review also discusses the use of C x N y -based materials in fuel cells, metal–air batteries, water splitting cells, and supercapacitor applications. Herein, we deal with electrocatalytic oxidation and reduction reactions such as hydrogen evolution, oxygen evolution, oxygen reduction, CO2 reduction, nitrogen reduction, etc. Each device has been studied for a clearer understanding of the patent applications, and the relevant experiments are reviewed separately. Additionally, the role of C x N y -derived materials in some general redox reactions capable of being exploited in any of the relevant devices is included.

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“…For instance, deposition of some metallic NPs such as Pd, Pt, Ag, Au, TiO 2 and ZnO on surface of g-C 3 N 4 can improve its catalytic activities (Ding et al 2017;Zhu et al 2014). One of the metal NPs with high conductivity and low toxicity is Au NPs which was used in many elds for example, electronics, optics, biomedicine, and catalyst ( Nasri et al 2020;Yang et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Laser-assisted Preparation of C3N4/Fe2O3/Au Nanocomposite: A Magnetic Reusable Catalyst for Pollutant Degradation

Nasri

Nezafat

Jaleh

et al. 2021

Preprint

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Assorted common contaminants namely organic dyes and nitro compounds are generated by various industries and have caused alarming problems for the environment and humans. The development of effective and newer methods to eliminate these contaminants is imperative. One effective way to eliminate these pollutants is to deploy sustainable heterogeneous catalyst systems. Accordingly, a novel and efficient magnetic nanocomposite catalyst comprising graphitic carbon nitride (g-C3N4), gold (Au), and hematite (α-Fe2O3) nanoparticles (C3N4/Fe2O3/Au) is prepared through a cost-effective and green method. The individual components, g-C3N4 and Au nanoparticles (NPs), are prepared via thermal decomposition of urea and laser ablation in liquid (LAL), respectively. The behavior of C3N4/Fe2O3/Au nanocomposite as a catalyst for the borohydride reduction of methyl orange (MO) dye and 4-nitrophenol (4-NP) in aqueous solution is illustrated.

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Facile synthesis of graphitic carbon nitride/chitosan/Au nanocomposite: A catalyst for electrochemical hydrogen evolution

Cited by 79 publications

References 64 publications

Sensing Properties of g-C3N4/Au Nanocomposite for Organic Vapor Detection

Sensing Properties of g-C3N4/Au Nanocomposite for Organic Vapor Detection

Advances in Carbon Nitride-Based Materials and Their Electrocatalytic Applications

Laser-assisted Preparation of C3N4/Fe2O3/Au Nanocomposite: A Magnetic Reusable Catalyst for Pollutant Degradation

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Facile synthesis of graphitic carbon nitride/chitosan/Au nanocomposite: A catalyst for electrochemical hydrogen evolution

Cited by 79 publications

References 64 publications

Sensing Properties of g-C3N4/Au Nanocomposite for Organic Vapor Detection

Sensing Properties of g-C3N4/Au Nanocomposite for Organic Vapor Detection

Advances in Carbon Nitride-Based Materials and Their Electrocatalytic Applications

Laser-assisted Preparation of C3N4/Fe2O3/Au&nbsp;Nanocomposite: A Magnetic Reusable Catalyst for Pollutant Degradation

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Laser-assisted Preparation of C3N4/Fe2O3/Au Nanocomposite: A Magnetic Reusable Catalyst for Pollutant Degradation