Current challenges and developments of inorganic/organic materials for the abatement of toxic nitrogen oxides (NOx) – A critical review

Panigrahi, Tamanna Harihar; Sahoo, Sauvagya Ranjan; Murmu, Gajiram; Maity, Dipak; Saha, Sumit Kumar

doi:10.1016/j.progsolidstchem.2022.100380

Cited by 24 publications

(11 citation statements)

References 212 publications

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“…Toxic gases, such as nitrogen oxides, gaseous formaldehyde, and gaseous mercury, are produced in modern industrial production, posing a serious threat to human health. [151] Therefore, removing such gaseous pollutants from the atmosphere is critical. Photocatalytic oxidation has been widely recognized as a viable solution for removing low concentrations of gaseous pollutants due to its environmental friendliness, economical cost, and effectiveness.…”

Section: Air Purificationmentioning

confidence: 99%

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Photocatalytic Enhancement Strategy with the Introduction of Metallic Bi: A Review on Bi/Semiconductor Photocatalysts

Song,

Bao,

2023

The Chemical Record

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Semiconductor photocatalysis has great potential in the fields of solar fuel production and environmental remediation. Nevertheless, the photocatalytic efficiency still constrains its practical production applications. The development of new semiconductor materials is essential to enhance the solar energy conversion efficiency of photocatalytic systems. Recently, the research on enhancing the photocatalytic performance of semiconductors by introducing bismuth (Bi) has attracted widespread attention. In this review, we briefly overview the main synthesis methods of Bi/semiconductor photocatalysts and summarize the control of the micromorphology of Bi in Bi/semiconductors and the key role of Bi in the catalytic system. In addition, the promising applications of Bi/semiconductors in photocatalysis, such as pollutant degradation, sterilization, water separation, CO2 reduction, and N2 fixation, are outlined. Finally, an outlook on the challenges and future research directions of Bi/semiconductor photocatalysts is given. We aim to offer guidance for the rational design and synthesis of high‐efficiency Bi/semiconductor photocatalysts for energy and environmental applications.

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Section: Air Purificationmentioning

confidence: 99%

“…Toxic gases, such as nitrogen oxides, gaseous formaldehyde, and gaseous mercury, are produced in modern industrial production, posing a serious threat to human health [151] . Therefore, removing such gaseous pollutants from the atmosphere is critical.…”

Section: Environmental Application Of Bi/semiconductor Photocatalystsmentioning

confidence: 99%

Photocatalytic Enhancement Strategy with the Introduction of Metallic Bi: A Review on Bi/Semiconductor Photocatalysts

Song,

Bao,

2023

The Chemical Record

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“…Nitrous oxide (N 2 O), also one of the chief greenhouse gases in the atmosphere, has strong radiation absorption capability, and its greenhouse effect potential is estimated to be around 300 times greater than that of CO 2 Moreover, N 2 O is the primary cause of ozone depletion, acid rain formation, and photochemical smog due to its long lifespan in the atmosphere. Human activities such as the artificial emission of industrial exhaust and the excessive use of chemical fertilizers in agriculture, as well as the growing demand for energy, have led to a sharp accrescence in N 2 O emissions in recent years .…”

Section: Introductionmentioning

confidence: 99%

Exploring the Micropore Functional Mechanism of N₂O Adsorption by the Eucalyptus Bark-based Porous Carbon

Mou,

Liu,

Gong

et al. 2024

Langmuir

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Nitrous oxide (N 2 O), recognized as a significant greenhouse gas, has received insufficient research attention in the past. In view of their low energy consumption and cost-effectiveness, the application of porous materials in adsorption is increasingly regarded as a potent strategy to reduce N 2 O pollution. In this study, a series of microporous porous carbons with a preeminent specific surface area (244.54−2018.08 m 2 g −1 ), which are derived from the fast-growing eucalyptus bark, were synthesized by KOH activation at high temperatures. The obtained materials demonstrated a relatively fine N 2 O capture capability (0.19− 0.68 mmol g −1 ) at normal temperature and pressure. More importantly, the optimal pore size affecting N 2 O adsorption (0.8 and 1.0 nm) has been detected, which is a meaningful view that has never been put forward in previous studies. The rationality of the N 2 O adsorption mechanism was also validated by combining the experimental analysis and Grand Canonical Monte Carlo (GCMC) simulation. The calculated results showed that 0.8 and 1.0 nm of the porous carbon were the preferred pore sizes for N 2 O adsorption, and the interaction force between N 2 O and the pore wall decreased with the increase of distance. This study provides a significant theoretical basis for the preparation of biomass porous carbon with excellent N 2 O adsorption performance and practical adsorption application.

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“…It was concluded that the reactive oxygen species in the exhaust are directly correlational toward genotoxicity in lung tissues, whereas the depositional surface area, elemental and organic carbon, and polycyclic aromatic hydrocarbons (PAH) correlated with neutrophil influx in a study conducted on mice. When zeroing in on NO x , it majorly comprises nitrous oxide (N 2 O), nitric oxide (NO), dinitrogen trioxide (N 2 O 3 ), nitrogen dioxide (NO 2 ), dinitrogen tetroxide (N 2 O 4 ), and dinitrogen pentoxide (N 2 O 5 ) . Each of these has its environmental potency and quite easily participates in radical formation at higher temperatures.…”

Section: Introductionmentioning

confidence: 99%

Advancements in In-Cylinder and After-Treatment Strategies for Mitigating Pollutants from Diesel Engines: A Critical Review

Da Costa,

Bukkarapu,

Fernandes

et al. 2024

Energy Fuels

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Although diesel after-treatment techniques demonstrate a substantial decrease in tailpipe emissions, the primary goal continues to be attaining nearly zero emissions to comply with current regulatory requirements and foreseeable imminent rigorous regulations. To achieve this objective, engine combustion systems and fuel formulations require fine-tuning. Taking insights from the recent literature, this review examines various processes, including homogeneous in situ methods, the incorporation of fuel-borne catalysts, and the use of biofuels. Despite progress in in-cylinder pollution mitigation techniques like low-temperature combustion, which exhibits substantial reductions in oxides of nitrogen (NO x ) and soot emissions, it is crucial to consistently advance technology to conform to evolving emission regulations and environmental concerns. A discussion is presented regarding the advantages and disadvantages of the homogeneous charge compression ignition (HCCI) mode and their potential for the future, focusing on biodiesel-fueled HCCI engines. The review assesses the effectiveness of thermal management strategies and engine design modifications that extend the operational range of HCCI engines powered by biodiesel in light of the inherent limitation of a restricted engine operating range. The review critically examines the merits and demerits of biofuels and HCCI systems and provides an essential analysis of current after-treatment approaches. With an imperative focus, the primary aim of this review is to ascertain modern catalysts designed explicitly for use in contemporary combustion systems. An exhaustive examination of the progress made in diesel oxidation catalysts, selective catalytic reduction techniques, lean NO x traps, diesel particulate filters, and catalyst regeneration is presented. The concluding remarks analyze the catalytic characteristics necessary for smooth incorporation with modern technological developments in various combustion systems.

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Current challenges and developments of inorganic/organic materials for the abatement of toxic nitrogen oxides (NOx) – A critical review

Cited by 24 publications

References 212 publications

Photocatalytic Enhancement Strategy with the Introduction of Metallic Bi: A Review on Bi/Semiconductor Photocatalysts

Photocatalytic Enhancement Strategy with the Introduction of Metallic Bi: A Review on Bi/Semiconductor Photocatalysts

Exploring the Micropore Functional Mechanism of N₂O Adsorption by the Eucalyptus Bark-based Porous Carbon

Advancements in In-Cylinder and After-Treatment Strategies for Mitigating Pollutants from Diesel Engines: A Critical Review

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Current challenges and developments of inorganic/organic materials for the abatement of toxic nitrogen oxides (NOx) – A critical review

Cited by 24 publications

References 212 publications

Photocatalytic Enhancement Strategy with the Introduction of Metallic Bi: A Review on Bi/Semiconductor Photocatalysts

Photocatalytic Enhancement Strategy with the Introduction of Metallic Bi: A Review on Bi/Semiconductor Photocatalysts

Exploring the Micropore Functional Mechanism of N2O Adsorption by the Eucalyptus Bark-based Porous Carbon

Advancements in In-Cylinder and After-Treatment Strategies for Mitigating Pollutants from Diesel Engines: A Critical Review

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Exploring the Micropore Functional Mechanism of N₂O Adsorption by the Eucalyptus Bark-based Porous Carbon