Green synthesis and formation mechanism of nanostructured Bi2Te3 using ascorbic acid in aqueous solution

Yokoyama, S.; Sato, Kei; Muramatsu, Makoto; Yamasuge, Takehiro; Itoh, Takashi; Motomiya, Kenichi; Takahashi, Hideyuki; Tohji, Kazuyuki

doi:10.1016/j.apt.2015.02.002

Cited by 13 publications

(5 citation statements)

References 45 publications

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“…A recent study by Mustafa Bicer et al on copper nanoparticles also showed a similar effect of ascorbic acid on the growth of copper nanoparticles to produce elongated copper nanoparticles . Recently, Yokoyama et al clearly illustrated how ascorbic acid acts as a best reducing agent for the synthesis of Bi 2 Te 3 nanoparticles . Further, it was shown in a study that ascorbic acid initially oxidizes to dehydroascorbic acid, and this conversion leads to the elongated growth of nano copper wires .…”

Section: Resultsmentioning

confidence: 87%

Ascorbic Acid-Assisted Microwave Synthesis of Mesoporous Ag-Doped Hydroxyapatite Nanorods from Biowaste Seashells for Implant Applications

Karunakaran

Cho

Kumar³

et al. 2019

ACS Appl. Bio Mater.

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Post-surgery implant infection is one of the most challenging issues in orthopedics and it is mainly caused by infective micro-organisms. A potential approach to overcome this issue is developing biomaterials with efficient antibacterial activity. The main intention of this present research is devoted to ascorbic acid-assisted microwave synthesis of mesoporous (silver) Ag-doped hydroxyapatite (HAp) nanorods using biowaste seashells with antibacterial properties. XRD, FTIR, and Raman spectroscopy results revealed that the synthesized nanoparticles are hexagonal crystalline HAp. Further, the silver-doped HAp was also successfully produced without affecting the HAp crystalline phase by forming electrostatic interaction with PO 4 3− ions during the synthesis. The morphological features confirm that the pure HAp is elongated mesoporous nanorods with 20 nm width and 300−500 nm length. However, silver doped HAp nanoparticles such as AgHA-1, AgHA-2, and AgHA-3 are found to be similar mesoporous rods but with different aspect ratios in sizes

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Section: Resultsmentioning

confidence: 87%

Ascorbic Acid-Assisted Microwave Synthesis of Mesoporous Ag-Doped Hydroxyapatite Nanorods from Biowaste Seashells for Implant Applications

Karunakaran

Cho

Kumar³

et al. 2019

ACS Appl. Bio Mater.

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“…To overcome this problem, nanostructured Bi 2 Te 3 has been synthesized with 100% yield by a chemical reduction method in an aqueous TeO 3 2– solution using mild and safe ascorbic acid as a reducing agent instead of toxic reducing agent commonly used. [ 358 ] Ascorbic acid functions as a capping agent as well as a reducing agent. It was revealed that TeO 3 2– converts to metal Te via easily reducible Te species with ascorbic acid [TeO 2 (C 6 H 6 O 6 )] 2– , and subsequently metal Te triggers the reduction of Bi species, culminating in Bi 2 Te 3 .…”

Section: Traditional Versus Green Sustainable Te Materials Synthesis ...mentioning

confidence: 99%

Energy‐Saving Pathways for Thermoelectric Nanomaterial Synthesis: Hydrothermal/Solvothermal, Microwave‐Assisted, Solution‐Based, and Powder Processing

2022

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The pillars of Green Chemistry necessitate the development of new chemical methodologies and processes that can benefit chemical synthesis in terms of energy efficiency, conservation of resources, product selectivity, operational simplicity and, crucially, health, safety, and environmental impact. Implementation of green principles whenever possible can spur the growth of benign scientific technologies by considering environmental, economical, and societal sustainability in parallel. These principles seem especially important in the context of the manufacture of materials for sustainable energy and environmental applications. In this review, the production of energy conversion materials is taken as an exemplar, by examining the recent growth in the energy-efficient synthesis of thermoelectric nanomaterials for use in devices for thermal energy harvesting. Specifically, "soft chemistry" techniques such as solution-based, solvothermal, microwave-assisted, and mechanochemical (ball-milling) methods as viable and sustainable alternatives to processes performed at high temperature and/or pressure are focused. How some of these new approaches are also considered to thermoelectric materials fabrication can influence the properties and performance of the nanomaterials so-produced and the prospects of developing such techniques further.

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“…Many reports are available on this technique, in which BiCl 3 and TeO 2 are used as initial precursors. [84][85][86][87][88][89] To reduce toxicity, Muramatsu et al 90 applied green hydrothermal solution synthesis using ascorbic acid in an aqueous solution as a reducing agent.…”

Section: Soft Chemical Reaction (Wet Chemical Process)mentioning

confidence: 99%

A Review on Doped/Composite Bismuth Chalcogenide Compounds for Thermoelectric Device Applications: Various Synthesis Techniques and Challenges

Hegde

Prabhu

2022

J. Electron. Mater.

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One of the global demands of primary research objectives is to achieve human energy harvesting and self-powered wearable technologies. Bismuth chalcogenides are the trending materials for thermoelectric generators and Peltier coolers due to their notable thermoelectric figure of merit in the low- and room-temperature range. Systematic alloying of bismuth chalcogenides leads to a substantial change in their electrical and thermal transport properties. The high thermoelectric figure of merit (ZT) observed in bismuth chalcogenides is due to the rhombohedral crystal structure, lower effective mass, low thermal conductivity, and large band degeneracy. This review is aimed at identifying and quantifying different techniques for effectively improving the thermoelectric properties of doped/composite bismuth chalcogenide compounds. The review also examines the various synthesis methods including ball milling (BM), spark plasma sintering (SPS), self-propagating high-temperature synthesis (SHS), soft chemical reaction, hydrothermal reaction, melt growth (MG), melt spinning (MS), sintering and consolidated synthesis, and hot extrusion, with their respective figures of merit. Since device modification is a challenging task, this report reviews the present research on bismuth chalcogenide alloys to benchmark future development using various techniques. Graphical Abstract

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Green synthesis and formation mechanism of nanostructured Bi2Te3 using ascorbic acid in aqueous solution

Cited by 13 publications

References 45 publications

Ascorbic Acid-Assisted Microwave Synthesis of Mesoporous Ag-Doped Hydroxyapatite Nanorods from Biowaste Seashells for Implant Applications

Ascorbic Acid-Assisted Microwave Synthesis of Mesoporous Ag-Doped Hydroxyapatite Nanorods from Biowaste Seashells for Implant Applications

Energy‐Saving Pathways for Thermoelectric Nanomaterial Synthesis: Hydrothermal/Solvothermal, Microwave‐Assisted, Solution‐Based, and Powder Processing

A Review on Doped/Composite Bismuth Chalcogenide Compounds for Thermoelectric Device Applications: Various Synthesis Techniques and Challenges

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