Fabrication of detonation nanodiamond@sodium alginate hydrogel beads and their performance in sunlight-triggered water release

Zheng, Dan; Bai, Bo; Xu, Xiaohui; He, Yedong; Li, Shan; Hu, Na; Wang, Honglun

doi:10.1039/c9ra03914g

Cited by 22 publications

(3 citation statements)

References 64 publications

(52 reference statements)

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“…The C-O-C stretching was observed at 1043.4 cm −1 in Type C and at 1039.6 cm −1 in Type A. Similar to Ca 2+ , the interaction of the Ag + ion with -COO − was also verified at 881 cm −1 [31][32][33][34][35]. The FT-IR results helped to elucidate the chemical structure of complexes formed by cross-linking or coordinating between natural polymers and metal ions inside the hydrogel owing to the interaction of metal ions such as Ca 2+ or Ag + ions, as shown in Scheme 1 [36][37][38][39].…”

Section: Characterization Of Alg-idc Filmsmentioning

confidence: 70%

Coloration on Bluish Alginate Films with Amorphous Heterogeneity Thereof

Yang,

Kang,

Lee

2023

Polymers

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Using sodium alginate (Alg) aqueous solution containing indigo carmine (IdC) at various concentrations we characterized the rippled surface pattern with micro-spacing on a flexible film as intriguing bluish Alg–IdC iridescence. The characterization was performed using Fourier-transform infrared spectroscopy, ultraviolet–visible spectroscopy, field emission scanning electron microscopy, atomic force microscopy, electron microscopy, differential scanning calorimetry, thermogravimetric analysis, X-ray diffraction analysis, and photoluminescence detection. The edge pattern on the film had a maximum depth of 825 nm, a peak-to-peak distance of 63.0 nm, and an average distance of 2.34 nm. The center of the pattern had a maximum depth of 343 nm and a peak-to-peak distance of 162 nm. The pattern spacing rippled irregularly, widening toward the center and narrowing toward the edges. The rippled nano-patterned areas effectively generated iridescence. The ultraviolet absorption spectra of the mixture in the 270 and 615 nm ranges were the same for both the iridescent and non-iridescent film surfaces. By adding Ag+ ions to Alg–IdC, self-assembled microspheres were formed, and conductivity was improved. Cross-linked bluish materials were immediately formed by the addition of Ca2+ ions, and the film was prepared by controlling their concentration. This flexible film can be used in applications such as eco-friendly camouflage, anti-counterfeiting, QR code materials for imaging/sensing, and smart hybrid displays.

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Section: Characterization Of Alg-idc Filmsmentioning

confidence: 70%

Coloration on Bluish Alginate Films with Amorphous Heterogeneity Thereof

Yang,

Kang,

Lee

2023

Polymers

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“…3a , the first stage (20–100 °C) of mass loss (4.28%) was ascribed to the loss of physically adsorbed water. 52 The second stage (100–420 °C) of mass loss (32.41%) was attributed to the dehydration of saccharide ring and the fracture of C–O–C glycoside bond of yeast. 53 The third stage (420–700 °C) of mass loss (61.58%) was assigned to the intermolecular crosslinking of oligosaccharides by dehydration at higher temperatures.…”

Section: Resultsmentioning

confidence: 99%

“…3a, the rst stage (20-100 C) of mass loss (4.28%) was ascribed to the loss of physically adsorbed water. 52 The second stage (100-420 C) of mass loss (32.41%) was attributed to the dehydration of saccharide ring and the fracture of C-O-C glycoside Fig. 1 The appearance of samples (a).…”

Section: Preparation and Characterization Of The Yincp@ecmentioning

confidence: 99%