CuFeS<sub>2</sub> colloidal nanocrystals as an efficient electrocatalyst for dye sensitized solar cells

Wu, Yihui; Zhou, Bin; Yang, Chi; Liao, Shichao; Zhang, Wenhua; Li, Can

doi:10.1039/c6cc06241e

Cited by 48 publications

(23 citation statements)

References 43 publications

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“…Thus far, reports on the preparation of CuFeS 2 NPs have been rather limited. The hot-injection method − is the most widely used in the synthesis of CuFeS 2 NPs; however, this approach lacks synthetic reproducibility and is not suitable for the large-scale production of NPs with narrow size distribution requirements. Therefore, finding an effective and reliable method for producing monodispersed CuFeS 2 NPs has become increasingly urgent.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Cisplatin(IV) Prodrug-Tethered CuFeS₂ Nanoparticles in Tumor-Targeted Chemotherapy and Photothermal Therapy

Girma

Tzing

Tseng

et al. 2018

ACS Appl. Mater. Interfaces

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In this study, for the first time, CuFeS nanocrystals were successfully prepared through a facile noninjection-based synthetic strategy, by reacting Cu and Fe precursors with dodecanethiol in a 1-octadecene solvent. This one-pot noninjection strategy features easy handling, large-scale production, and high synthetic reproducibility. Following hyaluronic acid (HA) encapsulation, CuFeS nanocrystals coated with HA (CuFeS@HA) not only readily dispersed in water and showed improved biocompatibility but also possessed a tumor-specific targeting ability of cancer cells bearing the cluster determinant 44 (CD44) receptors. The encapsulated CuFeS@HA showed broad optical absorbance from the visible to the near-infrared (NIR) region and high photothermal conversion efficiencies of about 74.2%. They can, therefore, be utilized for the photothermal ablation of cancer cells with NIR light irradiation. In addition, toxicity studies in vitro (B16F1 and HeLa) and in vivo (zebrafish embryos), as well as in vitro blood compatibility studies, indicated that CuFeS@HA show low cytotoxicity at the doses required for photothermal therapy. More importantly, CuFeS@HA can be used as delivery vehicles for chemotherapy cisplatin(IV) prodrug forming CuFeS@HA-Pt(IV). Their release profile revealed pH- and glutathione-mediated drug release from CuFeS@HA-Pt(IV), which may minimize the side effects of the drug to normal tissues during therapy. Subsequent in vitro experiments confirmed that the use of CuFeS@HA-Pt(IV) provides an enhanced and synergistic therapeutic effect compared to that from the use of either chemotherapy or photothermal therapy alone.

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Section: Introductionmentioning

confidence: 99%

Synthesis of Cisplatin(IV) Prodrug-Tethered CuFeS₂ Nanoparticles in Tumor-Targeted Chemotherapy and Photothermal Therapy

Girma

Tzing

Tseng

et al. 2018

ACS Appl. Mater. Interfaces

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“…Meanwhile, CuFeS 2 is a low‐band‐gap semiconductor ( E g = 0.6–0.7 eV) that contains neither toxic metals nor indium, which has recently become one of the most expensive elements used in electronics . However, a real change in this respect could be observed in the past year since new methods of preparing CuFeS 2 resulted in the elaboration of magnetic semiconductor‐based nanomaterials used in electronic devices and new electrocatalysts suitable for I 3 – reduction in dye‐sensitized solar cells showing photocatalytic conversion efficiency (PCE) values over 8 % . Since colloidal CuFeS 2 shows high absorption and high photothermal transduction efficiency (PTE) in the biological spectral range (650–900 nm), the nanoparticles were tested in photothermal therapy of human epithelial carcinoma cells and human ovarian cancer cells .…”

Section: Introductionmentioning

confidence: 99%

Facile Gram‐Scale Synthesis of the First n‐Type CuFeS₂ Nanocrystals for Thermoelectric Applications

et al. 2017

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The described method enables facile gram‐scale preparation of CuFeS2 nanocrystals exhibiting interesting thermoelectric properties from simple and readily available precursors. Exchange of primary organic ligands for inorganic ones using either (NH4)2S or triethyloxonium tetrafuoroborate (Meerwein's salt) resulted in nanocrystals from which n‐type bulk thermoelectric materials were obtained through sintering under pressure. The measured physical properties of the fabricated bulk thermoelectric materials depend on the type of inorganic ligands used for the exchange. In particular, materials that were surface‐modified with Meerwein's salt have a higher Seebeck coefficient (|S| = 238 µV K–1) as compared to those modified with (NH4)2S, whereas the latter exhibit higher electrical conductivity (8500 S m–1) and lower thermal conductivity (0.5 W m–1 K–1), both of which are favorable for thermoelectric applications.

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“…One potentially attractive, yet not well-studied, copper-based material is CuFeSe 2 , which represents a well-known class of I-III-VI 2 group ternary chalcogenides. Among the I-III-VI 2 group, such as CuInS 2 [22,23,24], CuInSe 2 [24,25,26], CuInTe 2 [27] and CuFeS 2 [24,28,29,30], materials have attracted extensive attention due to their high absorption coefficient, high conversion efficiency, low toxicity and other physical properties and unique chemical properties and have been explored for the fabrication of photovoltaic solar cells in very recent years. However, among these, less attention been paid to the CuFeSe 2 material, as eskebornite with a narrow band gap of 0.16 eV belongs to the tetragonal structure type [31] and the crystal structure of the CuFeSe 2 has the space group P

\overset{4}{true}

2c with cell parameters a = 5.521 Å and c = 11.04 Å [32].…”

Section: Introductionmentioning

confidence: 99%

Colloidal Synthesis and Thermoelectric Properties of CuFeSe2 Nanocrystals

et al. 2017

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Copper-based chalcogenides that contain abundant, low-cost and environmentally-friendly elements, are excellent materials for numerous energy conversion applications, such as photocatalysis, photovoltaics, photoelectricity and thermoelectrics (TE). Here, we present a high-yield and upscalable colloidal synthesis route for the production of monodisperse ternary I-III-VI2 chalcogenides nanocrystals (NCs), particularly stannite CuFeSe2, with uniform shape and narrow size distributions by using selenium powder as the anion precursor and CuCl2·2H2O and FeCl3 as the cationic precursors. The composition, the state of valence, size and morphology of the CuFeSe2 materials were examined by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), transmission electron microscope (TEM) and high resolution transmission electron microscope (HRTEM), respectively. Furthermore, the TE properties characterization of these dense nanomaterials compacted from monodisperse CuFeSe2 NCs by hot press at 623 K were preliminarily studied after ligand removal by means of hydrazine and hexane solution. The TE performances of the sintered CuFeSe2 pellets were characterized in the temperature range from room temperature to 653 K. Finally, the dimensionless TE figure of merit (ZT) of this Earth-abundant and intrinsic p-type CuFeSe2 NCs is significantly increased to 0.22 at 653 K in this work, which is demonstrated to show a promising TE materialand makes it a possible p-type candidate for medium-temperature TE applications.

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CuFeS₂ colloidal nanocrystals as an efficient electrocatalyst for dye sensitized solar cells

Cited by 48 publications

References 43 publications

Synthesis of Cisplatin(IV) Prodrug-Tethered CuFeS₂ Nanoparticles in Tumor-Targeted Chemotherapy and Photothermal Therapy

Synthesis of Cisplatin(IV) Prodrug-Tethered CuFeS₂ Nanoparticles in Tumor-Targeted Chemotherapy and Photothermal Therapy

Facile Gram‐Scale Synthesis of the First n‐Type CuFeS₂ Nanocrystals for Thermoelectric Applications

Colloidal Synthesis and Thermoelectric Properties of CuFeSe2 Nanocrystals

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CuFeS2 colloidal nanocrystals as an efficient electrocatalyst for dye sensitized solar cells

Cited by 48 publications

References 43 publications

Synthesis of Cisplatin(IV) Prodrug-Tethered CuFeS2 Nanoparticles in Tumor-Targeted Chemotherapy and Photothermal Therapy

Synthesis of Cisplatin(IV) Prodrug-Tethered CuFeS2 Nanoparticles in Tumor-Targeted Chemotherapy and Photothermal Therapy

Facile Gram‐Scale Synthesis of the First n‐Type CuFeS2 Nanocrystals for Thermoelectric Applications

Colloidal Synthesis and Thermoelectric Properties of CuFeSe2 Nanocrystals

Contact Info

Product

Resources

About

CuFeS₂ colloidal nanocrystals as an efficient electrocatalyst for dye sensitized solar cells

Synthesis of Cisplatin(IV) Prodrug-Tethered CuFeS₂ Nanoparticles in Tumor-Targeted Chemotherapy and Photothermal Therapy

Synthesis of Cisplatin(IV) Prodrug-Tethered CuFeS₂ Nanoparticles in Tumor-Targeted Chemotherapy and Photothermal Therapy

Facile Gram‐Scale Synthesis of the First n‐Type CuFeS₂ Nanocrystals for Thermoelectric Applications