Simple in-situ functionalization of polyaniline with boroncarbonitride as potential multipurpose photocatalyst: Generation of hydrogen, organic and inorganic pollutant detoxification

Raghu, M.S.; Parashuram, L.; Prashanth, M.K.; Kumar, K. Yogesh; Kumar, C.B. Pradeep; Alrobei, Hussein

doi:10.1016/j.nanoso.2021.100667

Cited by 15 publications

(16 citation statements)

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“…The results show that the photocatalytic efficiency in Cr(VI) reduction achieved 77.19% removal within 180 min of irradiation time. This removal was accomplished by reducing Cr 2 O 7 2− to Cr 3+ , as indicated by the equation below [ 1 ].

…”

Section: Resultsmentioning

confidence: 99%

“…When a light source (energy more than the bandgap) is exposed and exceeds the photocatalyst, electrons (e − ) and holes (h + ) occur in the conduction band (CB) and valance band (VB), respectively [ 1 ]. These pairs are responsible for eliminating organic or inorganic pollutants through reduction and oxidation reactions [ 26 ].…”

Section: Resultsmentioning

confidence: 99%

“…Starting with the oxidation reaction, which is responsible for the degradation of organic pollutants, in our case CFX, the holes (h + ) in the valance band react and oxidize H 2 O molecules to produce hydroxyl radicals, • OH, which are the most numerous and primary active species among the ROS in the oxidation of organic pollutants [ 1 , 13 , 63 ].…”

Section: Resultsmentioning

confidence: 99%

“…The electrons (e − ) in the conduction band reacted directly with Cr(VI) and reduced it to a lower valence state, Cr (III) [ 25 , 63 , 64 ]. This reduction reaction can minimize the risk of Cr(IV) by turning it into Cr (III) [ 1 ]. The e − can also react and reduce oxygen molecules present in the solution, leading to the formation of superoxide radical O 2 • .…”

Section: Resultsmentioning

confidence: 99%

“…It exists in water environments in various oxidation states, mainly hexavalent Cr(VI) and trivalent Cr(III). Cr(VI) is the most stable state and is more harmful to humans than other states, such as Cr(III, IV and V), because it is carcinogenic, mutagenic, and has high mobility characteristics [ 1 , 22 ]. For these reasons, the World Health Organization (WHO) has limited Cr(VI) concentrations in all water sources to below 0.05 mg [ 25 ].…”

Section: Introductionmentioning

confidence: 99%

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Application of Bi12ZnO20 Sillenite as an Efficient Photocatalyst for Wastewater Treatment: Removal of Both Organic and Inorganic Compounds

et al. 2021

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This work aims to synthesize and characterize a material that can be used as an effective catalyst for photocatalytic application to remove both organic and inorganic compounds from wastewater. In this context, sillenite Bi12ZnO20 (BZO) in a pure phase was synthesized using the sol–gel method. Before calcination, differential scanning calorimetry (DSC) analysis was done to determine the temperature of the formation of the sillenite phase, which was found to be 800 °C. After calcination, the phase was identified by X-ray diffraction (XRD) and then refined using the Rietveld refinement technique. The results prove that BZO crystals have a cubic symmetry with the space group I23 (N°197); the lattice parameters of the structure were also determined. From the crystalline size, the surface area was estimated using the Brunauer-Emmett-Teller (BET) method, which was found to be 11.22 m2/g. The formation of sillenite was also checked using the Raman technique. The morphology of the crystals was visualized using electron scanning microscope (SEM) analysis. After that, the optical properties of BZO were investigated by diffuse reflectance spectroscopy (DRS) and photoluminescence (PL); an optical gap of 2.9 eV was found. In the final step, the photocatalytic activity of the BZO crystals was evaluated for the removal of inorganic and organic pollutants, namely hexavalent chromium Cr(VI) and Cefixime (CFX). An efficient removal rate was achieved for both contaminants within only 3 h, with a 94.34% degradation rate for CFX and a 77.19% reduction rate for Cr(VI). Additionally, a kinetic study was carried out using a first-order model, and the results showed that the kinetic properties are compatible with this model. According to these findings, we can conclude that the sillenite BZO can be used as an efficient photocatalyst for wastewater treatment by eliminating both organic and inorganic compounds.

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…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Application of Bi12ZnO20 Sillenite as an Efficient Photocatalyst for Wastewater Treatment: Removal of Both Organic and Inorganic Compounds

et al. 2021

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Synthesis of a Self‐assembled Dual Morphologies Ag‐NPs/SrMoO₄ Photocatalyst with LSPR Effect for the Degradation of Methylene Blue Dye

Guo

et al. 2022

ChemistrySelect

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Morphology of photocatalyst has attracted many attentions due to its significant effect on photocatalytic properties. Herein, the effects of hydrothermal reaction conditions including time, temperature, and pH value on the morphology evolution as well as on the photocatalytic performance of SrMoO4 were investigated in detail. It was found that SrMoO4 had self‐assembled dual morphologies (spherical and dumbbell shape) under the specific reaction conditions with time=24 h, temperature=200 °C, and pH=6.13. In order to enhance its photocatalysis further, the silver nanoparticles (Ag‐NPs) were well‐dispersed uniform on the surface of as‐prepared samples to obtain Ag‐NPs/SrMoO4 composites by photoreduction method. It was determined that 3 %Ag‐NPs/SrMoO4 had the first‐class photocatalytic performance (η=83.7 %, kapp=0.05229 min‐1) for the photodegradation of MB dye, which is ∼2.52 times that of the bare SrMoO4 with dual morphology (η=51.9 %, kapp=0.02078 min−1) by comparison with the apparent first‐order reaction rate constants. The photocatalytic performance was promoted by high efficiency of photo‐induced carriers’ separation based on the effect of Localized Surface Plasmon Resonance (LSPR) of well‐dispersed Ag‐NPs.

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RETRACTED ARTICLE: Recent advances in green technology and Industrial Revolution 4.0 for a sustainable future

Bradu

Biswas

Nair

et al. 2022

Environ Sci Pollut Res

123

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This review gives concise information on green technology (GT) and Industrial Revolution 4.0 (IR 4.0). Climate change has begun showing its impacts on the environment, and the change is real. The devastating COVID-19 pandemic has negatively affected lives and the world from the deadly consequences at a social, economic, and environmental level. In order to balance this crisis, there is a need to transition toward green, sustainable forms of living and practices. We need green innovative technologies (GTI) and Internet of Things (IoT) technologies to develop green, durable, biodegradable, and eco-friendly products for a sustainable future. GTI encompasses all innovations that contribute to developing significant products, services, or processes that lower environmental harm, impact, and worsening while augmenting natural resource utilization. Sensors are typically used in IoT environmental monitoring applications to aid ecological safety by nursing air or water quality, atmospheric or soil conditions, and even monitoring species’ movements and habitats. The industries and the governments are working together, have come up with solutions—the Green New Deal, carbon pricing, use of bio-based products as biopesticides, in biopharmaceuticals, green building materials, bio-based membrane filters for removing pollutants, bioenergy, biofuels and are essential for the green recovery of world economies. Environmental biotechnology, Green Chemical Engineering, more bio-based materials to separate pollutants, and product engineering of advanced materials and environmental economies are discussed here to pave the way toward the Sustainable Development Goals (SDGs) set by the UN and achieve the much-needed IR 4.0 for a greener-balanced environment and a sustainable future. Graphical abstract

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Simple in-situ functionalization of polyaniline with boroncarbonitride as potential multipurpose photocatalyst: Generation of hydrogen, organic and inorganic pollutant detoxification

Cited by 15 publications

References 50 publications

Application of Bi12ZnO20 Sillenite as an Efficient Photocatalyst for Wastewater Treatment: Removal of Both Organic and Inorganic Compounds

Application of Bi12ZnO20 Sillenite as an Efficient Photocatalyst for Wastewater Treatment: Removal of Both Organic and Inorganic Compounds

Synthesis of a Self‐assembled Dual Morphologies Ag‐NPs/SrMoO₄ Photocatalyst with LSPR Effect for the Degradation of Methylene Blue Dye

RETRACTED ARTICLE: Recent advances in green technology and Industrial Revolution 4.0 for a sustainable future

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Simple in-situ functionalization of polyaniline with boroncarbonitride as potential multipurpose photocatalyst: Generation of hydrogen, organic and inorganic pollutant detoxification

Cited by 15 publications

References 50 publications

Application of Bi12ZnO20 Sillenite as an Efficient Photocatalyst for Wastewater Treatment: Removal of Both Organic and Inorganic Compounds

Application of Bi12ZnO20 Sillenite as an Efficient Photocatalyst for Wastewater Treatment: Removal of Both Organic and Inorganic Compounds

Synthesis of a Self‐assembled Dual Morphologies Ag‐NPs/SrMoO4 Photocatalyst with LSPR Effect for the Degradation of Methylene Blue Dye

RETRACTED ARTICLE: Recent advances in green technology and Industrial Revolution 4.0 for a sustainable future

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Synthesis of a Self‐assembled Dual Morphologies Ag‐NPs/SrMoO₄ Photocatalyst with LSPR Effect for the Degradation of Methylene Blue Dye