Assembly of carboxylated zinc phthalocyanine with gold nanoparticle for colorimetric detection of calcium ion

Zhou, Xuefei; Jia, Kun; He, Xiaohong; Wei, Shiliang; Wang, Pan; Liu, Xiaobo

doi:10.1007/s10854-018-8849-y

Cited by 5 publications

(2 citation statements)

References 35 publications

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“…Meanwhile, it is found that the spectra shapes for all of the ternary Cu 2 O/Au/TiO 2 -NAs nanocomposites consisted of two parts, 400−500 nm and 500−600 nm, which originated from the interband transition and the LSPR of Au NPs with a size approaching 50 nm. 37,38 The absorbance spectra of Au NPs produced shows a LSPR maxima at wavelength of 541 nm, indicative of well-separated Au NPs as illustrated in the inset of Figure S3b. The absorbance intensity increased with the content of Cu 2 O in the Cu 2 O/Au/TiO 2 -NAs nanocomplex increasing from 20 to 40 s, indicating that forming the ternary nanocomposites is beneficial to light harvesting.…”

Section: ■ Introductionmentioning

confidence: 99%

Au-Mediated Charge Transfer Process of Ternary Cu₂O/Au/TiO₂-NAs Nanoheterostructures for Improved Photoelectrochemical Performance

et al. 2020

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Based on a facile three-step preparation method, Cu2O/Au/TiO2-NAs ternary heterojunction nanocomposites have been successfully synthesized by electrodepositing a Cu2O layer on the surface of Au nanoparticles (NPs) decorated highly ordered TiO2 nanotube arrays (NAs). The structure, surface morphology, chemical composition, and optical and intrinsic defects properties of the as-prepared samples are characterized by transmission and scanning electron microscopy (TEM and SEM), X-ray diffraction (XRD), UV–vis light absorbance spectra, Raman scattering, and X-ray photoelectron spectroscopy (XPS). Simultaneously, the Cu2O/Au/TiO2-NAs ternary nanohybrids exhibited progressively improved photoelectrocatalytic (PEC) performance compared with the dual Cu2O/TiO2-NAs type-II nanoheterojunctions, confirming by the photocurrent density versus testing time curve (amperometric I–t curve), open-circuit potential versus testing time curve (V oc–t curve), and electrochemical impedance spectroscopy (EIS) measurements, which were mainly ascribed to the synergistic effect of reduced interfacial charge transfer resistance and boosted energetic charge carriers generation associated with embedding Au NPs. Furthermore, the self-consistent charge transfer mechanism of Z-scheme and interband transitions mediated with Au NPs for Cu2O/Au/TiO2-NAs triple nanocomposites is proposed, which was evaluated by nanosecond time-resolved transient photoluminescence (NTRT-PL) spectra excited by 266 and 400 nm, respectively. Following this scheme, UV–vis light photocatalytic activities of Cu2O/Au/TiO2-NAs ternary nanohybrids were elaborated toward photodegradation of methyl orange (MO) in aqueous solution, and the photodegradation rate of optimum triple nanocomplex was found to be 90%.

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Section: ■ Introductionmentioning

confidence: 99%

Au-Mediated Charge Transfer Process of Ternary Cu₂O/Au/TiO₂-NAs Nanoheterostructures for Improved Photoelectrochemical Performance

et al. 2020

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“…Metallic crosslinking is a widely-accepted method to conquer these defects of SPEN, which are especially adaptable to polymeric adsorbent-containing functional ligands, such as –COOH, –OH [26,27,28]. In addition, the crosslinkers usually come from multivalent metal ions, such as Ca (II), Al (III), Fe (III), Zr (IV) [29,30]. For example, Assia Benhouria et al have immobilized the alginate, bentonite and activated carbon together with Ca (II) ions and realized improved cationic dye removal efficiency according to the crosslinking mechanism [31].…”

Section: Introductionmentioning

confidence: 99%

Preparation of Sulfonated Poly(arylene ether nitrile)-Based Adsorbent as a Highly Selective and Efficient Adsorbent for Cationic Dyes

et al. 2018

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In this work, a highly selective and efficient polymer adsorbent inspired by a water-soluble sulfonated poly(arylene ether nitrile) (SPEN) was successfully synthesized. Due to the distinct structure of functional carboxyl, sulfonic acid and rigid benzene rings, a facile aluminium (III) ions crosslinking method was employed to fabricate the SPEN-based adsorbents (SPEN-Al). Among the three adsorbents, SPEN-Al-2 exhibited superior adsorption capacities with uniform morphology. Subsequently, the SPEN-Al-2 was selected as the adsorbent for three cationic dyes (rhodamine B (Rh B), neutral red (NR), methylene blue (MB)) and three anionic dyes (orange G (OG), methyl orange (MO), acid fuchsin (AF)), respectively, demonstrating that the adsorbent possessing excellent selectivity toward cationic dyes. Moreover, the dye’s adsorption selectivity of SPEN-Al-2 was further certificated in a binary cationic-anionic dyes mixtures (MB/OG and MB/MO) system. Taking MB as a dye model, a series of factors (contact time, concentration, temperature and pH) and adsorption models were systematically investigated in dye adsorption experiments. Results indicated that the adsorption was endothermic and the maximum adsorption capacity of SPEN-Al-2 could reach up to 877.5 mg/g; pseudo-second-model and Langmuir model were fitted to the adsorption kinetics and equilibrium isotherm, respectively, manifesting that SPEN-Al adsorbent was promising in the dyes removing field.

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Fabrication of polystyrene-acrylic/ZnO nanocomposite films for effective removal of methylene blue dye from water

2021

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Assembly of carboxylated zinc phthalocyanine with gold nanoparticle for colorimetric detection of calcium ion

Cited by 5 publications

References 35 publications

Au-Mediated Charge Transfer Process of Ternary Cu₂O/Au/TiO₂-NAs Nanoheterostructures for Improved Photoelectrochemical Performance

Au-Mediated Charge Transfer Process of Ternary Cu₂O/Au/TiO₂-NAs Nanoheterostructures for Improved Photoelectrochemical Performance

Preparation of Sulfonated Poly(arylene ether nitrile)-Based Adsorbent as a Highly Selective and Efficient Adsorbent for Cationic Dyes

Fabrication of polystyrene-acrylic/ZnO nanocomposite films for effective removal of methylene blue dye from water

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Assembly of carboxylated zinc phthalocyanine with gold nanoparticle for colorimetric detection of calcium ion

Cited by 5 publications

References 35 publications

Au-Mediated Charge Transfer Process of Ternary Cu2O/Au/TiO2-NAs Nanoheterostructures for Improved Photoelectrochemical Performance

Au-Mediated Charge Transfer Process of Ternary Cu2O/Au/TiO2-NAs Nanoheterostructures for Improved Photoelectrochemical Performance

Preparation of Sulfonated Poly(arylene ether nitrile)-Based Adsorbent as a Highly Selective and Efficient Adsorbent for Cationic Dyes

Fabrication of polystyrene-acrylic/ZnO nanocomposite films for effective removal of methylene blue dye from water

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Au-Mediated Charge Transfer Process of Ternary Cu₂O/Au/TiO₂-NAs Nanoheterostructures for Improved Photoelectrochemical Performance

Au-Mediated Charge Transfer Process of Ternary Cu₂O/Au/TiO₂-NAs Nanoheterostructures for Improved Photoelectrochemical Performance