Nano-structured biogenic calcite: A thermal and chemical approach to folia in oyster shell

Lee, Seung Woo; Kim, Young Moon; Kim, Ryun Hwa; Choi, Cheong Song

doi:10.1016/j.micron.2007.03.006

Cited by 43 publications

(33 citation statements)

References 22 publications

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“…(b)], characteristic of the in‐plane bending of CO 3 2− from calcite contained in the oyster shell [Fig. (b)] . The splitting of the peak at 1400–1494 cm −1 indicates the elimination of degeneracy due to the distortion of the CO 3 2− group .…”

Section: Resultsmentioning

confidence: 99%

“…1(b)]. 33 The splitting of the peak at 1400-1494 cm À1 indicates the elimination of degeneracy due to the distortion of the CO 3 2À group. 34 The degree of splitting of that band depends on the metal ion (Na + , Ca 2+ , and Mg 2+ ) linked to the carbonate group since the carbonate ion associated with the divalent cation results in a higher energy band than the one of Na-carbonate ion complexes.…”

Section: ) Characterization Techniquesmentioning

confidence: 99%

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Gel Composition and Strength Properties of Alkali‐Activated Oyster Shell‐Volcanic Ash: Effect of Synthesis Conditions

et al. 2016

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The gel composition and mechanical properties of alkali‐activated oyster shell‐volcanic ash were investigated at different NaOH concentrations (8, 12, and 15M) and curing temperatures (60°C and 80°C) in wet and dry conditions. XRD, FTIR, SEM‐EDS, and TGA‐DSC were used for microstructural characterization of the binder. The gel composition of the system was found to be influenced by NaOH concentration and was not affected when curing temperature was varied from 60°C to 80°C. The main phase was N,C–A–S–H for all alkali‐activated oyster shell‐volcanic ash, with C–S–H as secondary phase for some samples and contains high percentage of iron. The splitting at υ3 = 1400–1494 cm−1 on FTIR spectra corresponded to the elimination of the degeneracy due to the distortion of CO32− group. The high degree of splitting indicated that this carbonate group is linked to Ca2+. The compressive strength was influenced by curing temperature and the formation of a secondary phase. The compressive strength in dry condition increased roughly between 28 and 180 d for some samples, while in wet condition, the partial dissolution of Si–O–Si bonds of some silicate phases resulted in a reduction of strength.

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Section: Resultsmentioning

confidence: 99%

Section: ) Characterization Techniquesmentioning

confidence: 99%

Gel Composition and Strength Properties of Alkali‐Activated Oyster Shell‐Volcanic Ash: Effect of Synthesis Conditions

et al. 2016

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“…Numerous studies have been conducted on the material structure and properties of nacre, sea urchin spines, oyster shell folia, and coral, and models for the biomineralization processes in each of these organisms have been proposed and developed (Checa and Rodriguez-Navarro, 2005;Addadi et al, 2006;Rousseau et al, 2009;Lee et al, 2008;Mount et al, 2004;Allemand et al, 2004;Cuif and Dauphin, 2005). Unlike the aforementioned marine invertebrates, the calcareous tubebuilding marine worms in the serpulid family (Annelida, Polychaeta) have not been studied extensively with regards to CaCO 3 biomineralization.…”

Section: Introductionmentioning

confidence: 99%

Insights into the composition, morphology, and formation of the calcareous shell of the serpulid Hydroides dianthus

Tanur

Gunari

Sullan

et al. 2010

Journal of Structural Biology

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“…Several studies have been reported on variations of shell biometry in response to environmental parameters619202229, however few studies comparatively analyzed shell features at the micro and nanoscale level along environmental gradients30313233. The present study aimed to investigate the phenotypic response to the environment of shell features of C. gallina at different scales of observation, in six populations along a latitudinal gradient.…”

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confidence: 96%

Shell properties of commercial clam Chamelea gallina are influenced by temperature and solar radiation along a wide latitudinal gradient

Gizzi

Caccia

Simoncini

et al. 2016

Sci Rep

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Phenotype can express different morphologies in response to biotic or abiotic environmental influences. Mollusks are particularly sensitive to different environmental parameters, showing macroscale shell morphology variations in response to environmental parameters. Few studies concern shell variations at the different scale levels along environmental gradients. Here, we investigate shell features at the macro, micro and nanoscale, in populations of the commercially important clam Chamelea gallina along a latitudinal gradient (~400 km) of temperature and solar radiation in the Adriatic Sea (Italian cost). Six populations of clams with shells of the same length were analyzed. Shells from the warmest and the most irradiated population were thinner, with more oval shape, more porous and lighter, showing lower load fracture. However, no variation was observed in shell CaCO3 polymorphism (100% aragonite) or in compositional and textural shell parameters, indicating no effect of the environmental parameters on the basic processes of biomineralization. Because of the importance of this species as commercial resource in the Adriatic Sea, the experimentally quantified and significant variations of mass and fracture load in C. gallina shells along the latitudinal gradient may have economic implications for fisheries producing different economical yield for fishermen and consumers along the Adriatic coastline.

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Nano-structured biogenic calcite: A thermal and chemical approach to folia in oyster shell

Cited by 43 publications

References 22 publications

Gel Composition and Strength Properties of Alkali‐Activated Oyster Shell‐Volcanic Ash: Effect of Synthesis Conditions

Gel Composition and Strength Properties of Alkali‐Activated Oyster Shell‐Volcanic Ash: Effect of Synthesis Conditions

Insights into the composition, morphology, and formation of the calcareous shell of the serpulid Hydroides dianthus

Shell properties of commercial clam Chamelea gallina are influenced by temperature and solar radiation along a wide latitudinal gradient

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