Preparation of nano-silica materials: The concept from wheat straw

Chen, Hui; Wang, Fen; Zhang, Congyun; Shi, Yang; Gao, Jin; Yuan, Shiling

doi:10.1016/j.jnoncrysol.2010.09.051

Cited by 88 publications

(45 citation statements)

References 20 publications

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“…Silicon is the second most abundant element in Earth's crust, which is making up approximately 32% of the total weight of soil. Consequently, some plants rooting in soil includes silicon in their cells and intercellular spaces . Aqueous silicic acid (Si (OH) 4 ) is transported, and then with the increase of the concentration of silicic acid and as a result of polymerization, silicon is deposited in the plant tissues .…”

Section: Wheat Husk Silica‐based Materialsmentioning

confidence: 99%

“…Consequently, some plants rooting in soil includes silicon in their cells and intercellular spaces . Aqueous silicic acid (Si (OH) 4 ) is transported, and then with the increase of the concentration of silicic acid and as a result of polymerization, silicon is deposited in the plant tissues . Due to these reasons, extraction of biosilica from agricultural plant wastes is an emerging trend in the current research field .…”

Section: Wheat Husk Silica‐based Materialsmentioning

confidence: 99%

“…The agro‐industrial wastes are generally either burnt or left to landfill areas that result in environmental problems such as air, soil, and water pollution . In an effort to protect the environment through the rising farming activities, researchers have explored the feasibility of evaluating agricultural wastes and by‐products in production of several materials such as composite materials, adsorbents, fillers, supplementary cementitious materials, and also silica‐based materials . Various agricultural wastes such bagasse husk, barley husk, and rice husk have been utilized as a low‐cost, surplus silica sources around the world.…”

Section: Introductionmentioning

confidence: 99%

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Review on a novel biosilica source for production of advanced silica‐based materials: Wheat husk

Terzioğlu

Yücel

Kuş

2018

Asia-Pacific J Chem Eng

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The growing cognizance of environmental matters elucidates the increasing attention thought the evaluation of bio‐based by‐products and waste materials in various applications. The agricultural‐based industry results in considerable amounts of residues containing silica. In the past decade, extensive research studies had been executed to evaluate agricultural waste materials such as rice husk and rice straw. The results of the studies point out the possibility of evaluating such wastes to produce silica‐based materials. Wheat husk is such an abundantly available waste obtained from the wheat milling process. It is containing noncrystalline silica, and thus, it can also be evaluated to produce value added materials. This study presents a comprehensive overview of the researches carried out on the properties and utilization of wheat husk as a silica source. The summary and discussion presented in this review would provide knowledge on wheat husk that is convenient to be utilized for the low‐cost and sustainable production of silica‐based materials such as aerogel, metal silicates, zeolite, silica‐based ceramics, and composites.

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Section: Wheat Husk Silica‐based Materialsmentioning

confidence: 99%

Section: Wheat Husk Silica‐based Materialsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Review on a novel biosilica source for production of advanced silica‐based materials: Wheat husk

Terzioğlu

Yücel

Kuş

2018

Asia-Pacific J Chem Eng

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“…[13,14] Particularly, WS and corn waste have been evaluated as an efficient substrate in the production of biotechnological products such as enzymes, since it permits good aeration of the mycelium. [15] Other uses prospected include the production of cellulose, [16] manufacture of nano-silica materials [17] and nanofibres, [18] application as vehicle/support for controlled release of bioactive molecules, and fractionation of its components. [19] An attractive alternative valorization that has emerged in recent decades is the manufacturing of low-cost adsorbents.…”

Section: Introductionmentioning

confidence: 99%

Valorization of agricultural wastes as dye adsorbents: characterization and adsorption isotherms

Sepúlveda

Cuevas

Contreras

2015

Environmental Technology

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The purpose of this work is to evaluate the valorization of agricultural waste, wheat straw (WS) and corn cob leaves (CCLs) as textile dye adsorbents. Physico-chemical and superficial characteristics of the agricultural wastes, together with the interactions with the CI Basic Violet 4 (BV4) dye, were investigated by means of the determination of the isotherm adsorption at different temperatures. The morphological characterization showed that the solid surface is coarse with a low pore level. However, through Fourier transformed infrared analysis, the presence of carboxylic and hydroxylic acid groups and hydrophobic methyl groups was detected. The concentration of acid groups is determined by the Boehm method and was found to be 1.00 and 0.89 meq/g for WS and CCLs, respectively. The point zero charge for each adsorbent was 5.76 and 4.08. Adsorption experimental data presented a better-fit Langmuir model, indicating that adsorption occurred in a monolayer with preferential interaction. The maximum adsorption capacity was determined to be 70.0-89.0 and 47.0-68.0 mg/g for CCLs and WS, respectively. The thermodynamic analysis of the Langmuir parameter b showed that the adsorption of the BV4 dye is spontaneous and exothermic with adsorption energies of 14.43 and 5.58 KJ/mol for CCLs and WS, respectively.

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“…Phytoliths are casts of polymerized silicic acid anion often accumulated in the form of porous opal in plant cells or intercellular spaces. Nanoscale and patterned biogenic silica can be recovered from Oryza (rice), the Triticum genus (wheat) 10 , and millet from the Poaceae family, subfamily Panicoideae 11 . The attraction of these latter sources lies in the rather high concentration of silica in the plant tissues.…”

Section: Introductionmentioning

confidence: 99%

Nanoplasmonic photonic crystal diatoms and phytoliths

et al. 2011

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Evidence is emerging that silica-containing plant cells (phytoliths) and single cell micro-organisms (diatoms) exhibit optical properties reminiscent of photonic crystals. In the latter biosilicates, these properties appear to arise from light interactions with the intricate periodic patterns of micro-and nano-pores called foramina that are distributed over the frustule (outer silica shell). In this report, we show that Nitzschia Closterium pennate diatom frustules can be used to template arrays of nanoplasmonic particles to confer more complex physical properties, as shown by simulation and experiment. Selective templating of silver and gold nanoparticles in and around the array of pores was achieved by topochemical functionalization with nanoparticles deposited from solution, or by differential wetting/dewetting of evaporated gold films. The nanoplasmonic diatom frustules exhibit surface enhanced Raman scattering from chemisorbed 4-aminothiophenol. Thermally induced dewetting of gold films deposited on a frustule produces two classes of faceted gold nanoparticles. Larger particles of irregular shape are distributed with some degree of uniaxial anisotropy on the surface of the frustule. Smaller particles of more uniform size are deposited in a periodic manner in the frustule pores. It is thought that surface curvature and defects drive the hydrodynamic dewetting events that give rise to the different classes of nanoparticles. Finite difference time domain calculations on an idealized nanoplasmonic frustule suggest a complex electromagnetic field response due to coupling between localized surface plasmon modes of the nanoparticles in the foramina and an overlayer gold film.

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Preparation of nano-silica materials: The concept from wheat straw

Cited by 88 publications

References 20 publications

Review on a novel biosilica source for production of advanced silica‐based materials: Wheat husk

Review on a novel biosilica source for production of advanced silica‐based materials: Wheat husk

Valorization of agricultural wastes as dye adsorbents: characterization and adsorption isotherms

Nanoplasmonic photonic crystal diatoms and phytoliths

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