Recent Advances in Functionalized Nanoporous Carbons Derived from Waste Resources and Their Applications in Energy and Environment

Joseph, Stalin; Saianand, Gopalan; Benzigar, Mercy R.; Ramadass, Kavitha; Singh, Gurwinder; Gopalan, A.; Yang, Jae Hun; Mori, Toshiyuki; Al-Muhtaseb, Ala’a H.; Yi, Jiabao; Vinu, Ajayan

doi:10.1002/adsu.202000169

Cited by 56 publications

(38 citation statements)

References 284 publications

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“…These approaches for the depollution process, however, are constrained with drawbacks [11]. For example, while activated carbon [12,13] adsorption can lead to secondary pollution, incineration and catalytic oxidation are expensive and consume more energy. Photocatalysis is a rapidly evolving technology for the treatment of air pollutants and is considered as one of the most effective methods to remediate environmental gaseous pollutants.…”

Section: Introductionmentioning

confidence: 99%

Recent Progress in the Abatement of Hazardous Pollutants Using Photocatalytic TiO2-Based Building Materials

et al. 2020

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Titanium dioxide (TiO2) has been extensively investigated in interdisciplinary research (such as catalysis, energy, environment, health, etc.) owing to its attractive physico-chemical properties, abundant nature, chemical/environmental stability, low-cost manufacturing, low toxicity, etc. Over time, TiO2-incorporated building/construction materials have been utilized for mitigating potential problems related to the environment and human health issues. However, there are challenges with regards to photocatalytic efficiency improvements, lab to industrial scaling up, and commercial product production. Several innovative approaches/strategies have been evolved towards TiO2 modification with the focus of improving its photocatalytic efficiency. Taking these aspects into consideration, research has focused on the utilization of many of these advanced TiO2 materials towards the development of construction materials such as concrete, mortar, pavements, paints, etc. This topical review focuses explicitly on capturing and highlighting research advancements in the last five years (mainly) (2014–2019) on the utilization of various modified TiO2 materials for the development of practical photocatalytic building materials (PBM). We briefly summarize the prospective applications of TiO2-based building materials (cement, mortar, concretes, paints, coating, etc.) with relevance to the removal of outdoor/indoor NOx and volatile organic compounds, self-cleaning of the surfaces, etc. As a concluding remark, we outline the challenges and make recommendations for the future outlook of further investigations and developments in this prosperous area.

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Section: Introductionmentioning

confidence: 99%

Recent Progress in the Abatement of Hazardous Pollutants Using Photocatalytic TiO2-Based Building Materials

et al. 2020

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“…Various natural biomass such as cassava peel waste, chicken eggshell, seed shell, rubberwood sawdust, wood, peanut kernel, lignocellulose (biomass) materials, corn cob, Kraft lignin, scrap tires, textile waste, rice husk, palm shell, and sugar have been employed as precursors for the production of NPC. These sources are generally rich in carbon giving amorphous phases, and the plant wastes containing the cellulose are familiar to form graphitic nanostructures with high-temperature treatments [47].…”

Section: Nanoporous Carbon Materials Synthesismentioning

confidence: 99%

“…The pyrolysis process is generally carried out before undergoing the activation process as the former process generates organic residues, which may block the porous channels of the final carbon materials. Physical and chemical activation are two preferred choices for the fabrication of nanoporous carbon materials from carbon-rich precursors, including waste materials [47,48] (Table 3).…”

Section: Activationmentioning

confidence: 99%

“…It is also possible to skip the carbonization stage, depending on the raw material, and proceed directly to thermal activation [47,48].…”

Section: Tablementioning

confidence: 99%

“…Chemical activation offers an additional advantage of introducing functional groups such as -COOH, -NH, or -OH on the surface of the porous carbon. However, the crystallinity of the sample after the chemical activation is reduced due to the continuous dehydration and the oxidation with the activating agent, which creates a lot of defect sites along the carbon walls of the final product [28,47,48].…”

Section: Chemical Activationmentioning

confidence: 99%

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Nanoporous Carbon Materials toward Phenolic Compounds Adsorption

Mubarak¹,

Ahmed²,

Gabr³

2021

Nanopores

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Nanoporous carbon-based sorbents are used to generate a three-dimensional real-space model of the nanoporous structure using the concept of Gaussian random fields. This pore model is used to derive important pore size characteristics, which are cross-validated against the corresponding values from gas sorption analysis. After filling the model pore structure with an aqueous electrolyte and rearranging the ions via a Monte Carlo simulation for different applied adsorption potentials. In comparison to nanopores formed from solid-state membranes (e.g., silicon oxide, aluminum oxide, polymer membranes, glass, hafnium oxide, gold, etc.) and very recently 2D materials (e.g., boron nitride, molybdenum disulfide, etc.), those nanopores produced from carbon materials (e.g., graphene, carbon nanotubes (CNTs), diamond, etc.), especially those from graphene appear to be perfect for adsorption process. The thickness of carbon structures nanopores can be as thin as 0.35 nm, resembling the height of the base spacing. Moreover, the sizes of carbon structures nanopores can be precisely fabricated and tuned to around 1.0 nm, the similar size of many heavy metals and organic pollutants molecules. Furthermore, carbon materials are chemically stable and feature-rich surface chemistry. Therefore, various carbon nanopore sequencing techniques have been developed. Finally, in this chapter the adsorption of phenolic compounds on nanoporous carbon specifically the active carbon are overviewed and how to affect the heterogeneity of activated carbon surface, PH of the solution on the efficiency of adsorption.

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Functional Nanomaterials from Waste and Low‐Value Natural Products: A Technological Approach Level

Levchenko

Mandhakini

Prasad

et al. 2022

Adv Materials Technologies

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Low‐ and negative‐value (waste) products represent a valuable resource. Its use as a source for the fabrication of high value materials represents a lucrative pathway to increasing sustainability and decreasing the economic cost of various industries. Thermochemical methods for the valorization of biowaste and low‐value natural products are simple and cheap yet sufficiently efficient to deliver significant economic benefits. Plasma‐based methods represent another family of technologies for waste‐to‐value conversion. The nanostructure nucleation and growth in plasmas involve a complex set of physical and chemical processes that occur in bulk plasma and on surfaces. The choice between these two types of technology assumes a complex optimization that takes into account several factors including the cost of precursors; initial outlay and operating cost of equipment; the cost of labor; the cost of production engineering including the research and development efforts for designing the industrial technology, which is typically higher for the plasma‐based systems, and so on. In this article a technology level comparison of thermochemical and plasma‐based techniques for the valorization of raw and waste biomass, where the intent is to use the resulting products for environmental remediation, energy storage, optoelectronics, and biomedical applications, is presented.

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Recent Advances in Functionalized Nanoporous Carbons Derived from Waste Resources and Their Applications in Energy and Environment

Cited by 56 publications

References 284 publications

Recent Progress in the Abatement of Hazardous Pollutants Using Photocatalytic TiO2-Based Building Materials

Recent Progress in the Abatement of Hazardous Pollutants Using Photocatalytic TiO2-Based Building Materials

Nanoporous Carbon Materials toward Phenolic Compounds Adsorption

Functional Nanomaterials from Waste and Low‐Value Natural Products: A Technological Approach Level

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