Nanotechnology in Air Pollution Remediation

Saleem, Haleema; Zaidi, Syed Javaid; Ismail, Ahmad Fauzi; Goh, Pei Sean

doi:10.1002/9783527834143.ch5

Cited by 4 publications

(3 citation statements)

References 62 publications

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“…However, similarly to semiconductor-based sensors, they suffer from cross-response issues and have a limited lifetime [137][138][139]. In addition, they are susceptible to temperature fluctuations; thus, the temperature should be kept constant and ideally known [140].…”

Section: Electrochemicalmentioning

confidence: 99%

Wearable Nano-Based Gas Sensors for Environmental Monitoring and Encountered Challenges in Optimization

Hooshmand,

Kassanos,

Keshavarz

et al. 2023

Sensors

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With a rising emphasis on public safety and quality of life, there is an urgent need to ensure optimal air quality, both indoors and outdoors. Detecting toxic gaseous compounds plays a pivotal role in shaping our sustainable future. This review aims to elucidate the advancements in smart wearable (nano)sensors for monitoring harmful gaseous pollutants, such as ammonia (NH3), nitric oxide (NO), nitrous oxide (N2O), nitrogen dioxide (NO2), carbon monoxide (CO), carbon dioxide (CO2), hydrogen sulfide (H2S), sulfur dioxide (SO2), ozone (O3), hydrocarbons (CxHy), and hydrogen fluoride (HF). Differentiating this review from its predecessors, we shed light on the challenges faced in enhancing sensor performance and offer a deep dive into the evolution of sensing materials, wearable substrates, electrodes, and types of sensors. Noteworthy materials for robust detection systems encompass 2D nanostructures, carbon nanomaterials, conducting polymers, nanohybrids, and metal oxide semiconductors. A dedicated section dissects the significance of circuit integration, miniaturization, real-time sensing, repeatability, reusability, power efficiency, gas-sensitive material deposition, selectivity, sensitivity, stability, and response/recovery time, pinpointing gaps in the current knowledge and offering avenues for further research. To conclude, we provide insights and suggestions for the prospective trajectory of smart wearable nanosensors in addressing the extant challenges.

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Section: Electrochemicalmentioning

confidence: 99%

Wearable Nano-Based Gas Sensors for Environmental Monitoring and Encountered Challenges in Optimization

Hooshmand,

Kassanos,

Keshavarz

et al. 2023

Sensors

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“…The results obtained from the above-stated research works motivated us for the research whether we can develop GQDs from renewable, inexpensive, natural, and sustainable sources like green plants, which are the basis of most of the world’s ecologies. A few studies were also carried out to develop GQDs from Eucalyptus tree leaves and Banyan tree leaves. − Certain polysaccharides, proteins, biomolecules, and enzymes in plants possess a great ability to carry out reduction and capping of nonbiocompatible materials. Plant-derived materials have been noted to be an excellent source for the green synthesis of carbon-based nanomaterials, as these materials have increased carbon amounts to synthesize the carbon nanostructured materials. , …”

Section: Introductionmentioning

confidence: 99%

“…A few studies were also carried out to develop GQDs from Eucalyptus tree leaves and Banyan tree leaves. 46 − 48 Certain polysaccharides, proteins, biomolecules, and enzymes in plants possess a great ability to carry out reduction and capping of nonbiocompatible materials. Plant-derived materials have been noted to be an excellent source for the green synthesis of carbon-based nanomaterials, as these materials have increased carbon amounts to synthesize the carbon nanostructured materials.…”

Section: Introductionmentioning

confidence: 99%

Sustainable Preparation of Graphene Quantum Dots from Leaves of Date Palm Tree

2023

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The date palm (Phoenix dactylifera), a subtropical and tropical tree, included in the family Palmae (Arecaceae) is one of the oldest cultivated plants of mankind. Date palm is a major agricultural product in the semi-arid and arid areas of the world, particularly in Arab countries. These trees generate high quantities of agricultural waste in the form of dry leaves, seeds, etc. In this study, dried date palm leaves were used as green precursors for synthesizing graphene quantum dots (GQDs). This work reported the preparation of GQDs using two different sustainable methods. GQD-1 was developed using a simple, hydrothermal technique at 200 °C for 12 h in water, with no requirement of reducing or passivizing agents or organic solvents. GQD-2 was prepared using a hydrothermal technique at 200 °C for 12 h in water, with the usage of just distilled water and absolute ethanol. The compositional analysis of the leaf extract was performed, along with the morphological, compositional, and optical examination of the sustainably developed GQDs. The characterization results confirmed the successful formation of GQDs, with average sizes ranging from 3.5 to 8 nm. This study helps to obtain GQDs in an economical, eco-friendly, and biocompatible manner and can assist in large-scale production and in recycling date palm tree waste products from Middle East countries into value-added products.

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Recent Advances in the Application of Nanomaterials for Environmental Sustainability

Prasad,

Gupta

2024

Hybrid Composite Materials

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Nanotechnology in Air Pollution Remediation

Cited by 4 publications

References 62 publications

Wearable Nano-Based Gas Sensors for Environmental Monitoring and Encountered Challenges in Optimization

Wearable Nano-Based Gas Sensors for Environmental Monitoring and Encountered Challenges in Optimization

Sustainable Preparation of Graphene Quantum Dots from Leaves of Date Palm Tree

Recent Advances in the Application of Nanomaterials for Environmental Sustainability

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