Synthesis of a visible-light-driven Ag2O–Co3O4 Z-scheme photocatalyst for enhanced photodegradation of a reactive yellow dye

Saeed, Muhammad; Al-Saeed, Fatimah A.; Altaf, Muhammad; Alahmari, Saeed D.; Bokhari, Tanveer Hussain; Khan, Iltaf; Bajaber, Majed A; Ahmed, Ahmed Ezzat

doi:10.1039/d2nj03791b

Cited by 5 publications

(4 citation statements)

References 69 publications

(75 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…190 These materials can effectively degrade organic pollutants through different mechanisms such as photocatalysis, adsorption, and oxidation. 191 In photocatalysis, these hybrid materials can act as efficient photocatalysts under visible light irradiation. 192 HPs QDs exhibit strong absorption in the visible range, allowing them to generate electron−hole pairs upon light excitation.…”

Section: Co 2 Conversionmentioning

confidence: 99%

“…HPs QDs@MOFs-COFs have been extensively studied for the degradation of various organic pollutants . These materials can effectively degrade organic pollutants through different mechanisms such as photocatalysis, adsorption, and oxidation . In photocatalysis, these hybrid materials can act as efficient photocatalysts under visible light irradiation .…”

Section: Applications Of Hps Qds@mofs-cof-based Materialsmentioning

confidence: 99%

See 1 more Smart Citation

Metal/Covalent Organic Framework Encapsulated Lead-Free Halide Perovskite Hybrid Nanocatalysts: Multifunctional Applications, Design, Recent Trends, Challenges, and Prospects

Altaf,

Khan,

Khan

et al. 2024

ACS Omega

Self Cite

View full text Add to dashboard Cite

Perovskites are bringing revolutionization in a various fields due to their exceptional properties and crystalline structure. Most specifically, halide perovskites (HPs), lead-free halide perovskites (LFHPs), and halide perovskite quantum dots (HPs QDs) are becoming hotspots due to their unique optoelectronic properties, low cost, and simple processing. HPs QDs, in particular, have excellent photovoltaic and optoelectronic applications because of their tunable emission, high photoluminescence quantum yield (PLQY), effective charge separation, and low cost. However, practical applications of the HPs QDs family have some limitations such as degradation, instability, and deep trap states within the bandgap, structural inflexibility, scalability, inconsistent reproducibility, and environmental concerns, which can be covered by encapsulating HPs QDs into porous materials like metal−organic frameworks (MOFs) or covalent−organic frameworks (COFs) that offer protection, prevention of aggregation, tunable optical properties, flexibility in structure, enhanced biocompatibility, improved stability under harsh conditions, consistency in production quality, and efficient charge separation. These advantages of MOFs-COFs help HPs QDs harness their full potential for various applications. This review mainly consists of three parts. The first portion discusses the perovskites, halide perovskites, lead-free perovskites, and halide perovskite quantum dots. In the second portion, we explore MOFs and COFs. In the third portion, particular emphasis is given to a thorough evaluation of the development of HPs QDs@MOFs-COFs based materials for comprehensive investigations for next-generation materials intended for diverse technological applications, such as CO 2 conversion, pollutant degradation, hydrogen generation, batteries, gas sensing, and solar cells. Finally, this review will open a new gateway for the synthesis of perovskite-based quantum dots.

show abstract

Section: Co 2 Conversionmentioning

confidence: 99%

Section: Applications Of Hps Qds@mofs-cof-based Materialsmentioning

confidence: 99%

Metal/Covalent Organic Framework Encapsulated Lead-Free Halide Perovskite Hybrid Nanocatalysts: Multifunctional Applications, Design, Recent Trends, Challenges, and Prospects

Altaf,

Khan,

Khan

et al. 2024

ACS Omega

Self Cite

View full text Add to dashboard Cite

show abstract

“…The ineffectiveness and high costs associated with conventional methods and techniques used for the abatement of water pollution have forced researchers to develop effective and low-cost innovative techniques for this purpose. Photocatalysis has merged as a green, low-cost, and effective technique for the destruction of organic pollutants like dyes, pesticides, and pharmaceutics present in wastewater recently [13][14][15][16]. The photocatalytic technique is an effective protocol for the abatement of organic pollutants like dyes and pesticides.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Photocatalytic Activity of the Bi2O3-NiO Heterojunction for the Degradation of Methyl Orange under Irradiation of Sunlight

Ashfaq,

Ali,

Abbood

et al. 2023

Water

View full text Add to dashboard Cite

Recently, the development of visible-light-responsive catalysts for the photodegradation of organic pollutants has captured the attention of researchers globally. The ineffectiveness and high costs associated with conventional methods and techniques used for the abatement of water pollution have forced researchers to develop effective and low-cost innovative techniques for this purpose. Photocatalysis is considered an effective protocol for this purpose. Therefore, this study was conducted for the development of the Bi2O3-NiO heterojunction as a visible-light-responsive photocatalyst for the degradation of methyl orange. Ni(NO3)2∙6H2O (Fluka) and Bi(NO3)3∙5H2O (Merck) were used as precursor materials for the synthesis of NiO-Bi2O3. After fabrication, the Bi2O3-NiO heterojunction was characterized using XRD, EDX, SEM, FTIR, and TGA techniques. Then, it was employed as a catalyst for the photodegradation of methyl orange under sunlight irradiation. The fabricated Bi2O3-NiO showed higher photocatalytic activity than Bi2O3 and NiO with 100, 67, and 46% degradation of methyl orange, respectively. The rate constant determined by the non-linear method of analysis for the photodegradation of MO in the presence of Bi2O3-NiO was 3.2-fold and 1.7-fold of the rate constant with NiO and Bi2O3, respectively. The higher photocatalytic activity of Bi2O3-NiO than of its individual components in the present study is also attributed to the separation and transfer of positive holes and electrons. The recycling of spent Bi2O3-NiO under similar experimental conditions exhibited the same photocatalytic activity suggesting the stability of the fabricated Bi2O3-NiO photocatalyst.

show abstract

“…For instance, the commonly used catalyst ZnS mixed with chitosan-g-poly(acrylamide) material showed a degradation rate of 69% under 4 h of solar light irradiation [15]. However, high-performance catalysts treated with special processes have shown photocatalytic degradation efficiencies towards organic dyes, such as Rhodamine B, that can exceed 90%, and even reach a degradation rate of 99% after a certain period of time in some cases [16][17][18]. In electrocatalysis, maintaining a certain potential difference between the two electrodes can produce positive and negative charges at the two electrodes.…”

Section: Introductionmentioning

confidence: 99%

Triboelectrification Catalytic Degradation of Organic Pollutants in Water Environment

Zhang

2023

Catalysts

View full text Add to dashboard Cite

With the rapid development of industrialization, more and more organic pollutants are entering the water environment, rendering the treatment of organic pollutants a key issue in protecting it. Therefore, finding a convenient and effective method for degrading organic pollutants in water is of great importance. Triboelectrification is known as the process of charge transfer during the friction process. It is always accompanied by the energy level transition of electrons or holes, making it a potential method for catalytic degradation, which we refer to as triboelectrification catalysis. In this study, a set of experimental equipment was developed. The device is composed of a mechanical system, a control system, and a measurement system that can realize the quantitative measurement of the triboelectrification catalysis under different friction pairs, different loads, and different contact frequencies. Using the developed device, we observed stable triboelectrification catalytic degradation. This study performed triboelectrification catalytic experiments on various organic compounds including methyl orange, rhodamine, and tetracycline. The results revealed that these three organic compounds were degraded by 39%, 15%, and 20%, respectively, within three hours of being under the influence of triboelectrification catalysis. Subsequently, this study conducted triboelectrification catalytic experiments using materials with different triboelectric capacities. This study found that the triboelectric capacity significantly impacted the triboelectrification catalytic degradation rate, providing further evidence for the mechanism of triboelectrification catalysis. Additionally, this study found that SiO2 and Al2O3, which also utilize electrons as the primary carrier for triboelectrification, are capable of catalyzing the degradation of a methyl orange solution. Therefore, this study suggests that the triboelectrification catalysis is a versatile and widely applicable method for treating organic pollutants in water. With a broad range of catalyst sources and the ability to effectively degrade various organic pollutants, it shows promise as a solution for the problem of water pollution.

show abstract

Synthesis of a visible-light-driven Ag₂O–Co₃O₄ Z-scheme photocatalyst for enhanced photodegradation of a reactive yellow dye

Abstract: The development of an efficient, cost-effective, and stable visible-light-driven photocatalyst for the photodegradation of organic pollutants is a challenging task. Herein, the synthesis, and characterization of Ag2O-Co3O4 Z-scheme photocatalyst and...

Cited by 5 publications

References 69 publications

Metal/Covalent Organic Framework Encapsulated Lead-Free Halide Perovskite Hybrid Nanocatalysts: Multifunctional Applications, Design, Recent Trends, Challenges, and Prospects

Metal/Covalent Organic Framework Encapsulated Lead-Free Halide Perovskite Hybrid Nanocatalysts: Multifunctional Applications, Design, Recent Trends, Challenges, and Prospects

Enhanced Photocatalytic Activity of the Bi2O3-NiO Heterojunction for the Degradation of Methyl Orange under Irradiation of Sunlight

Triboelectrification Catalytic Degradation of Organic Pollutants in Water Environment

Contact Info

Product

Resources

About