Preparation of hybrid CaCO3–pepsin hemisphere with ordered hierarchical structure and the application for removal of heavy metal ions

Ma, Xiaoming; Li, Liping; Yang, Lin; Su, Caiyun; Wang, Kui; Jiang, Kai

doi:10.1016/j.jcrysgro.2011.11.016

Cited by 24 publications

(18 citation statements)

References 34 publications

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“…The summary of their study shows the surface area, porosity and methane uptake data of some certain MOFs. Ma et al (2012aMa et al ( , 2012b in a report showed that the methane uptake in a MOFs can exceed the United States Department of Energy target which can be said to be the breakthrough in the study of use of MOFs for methane gas storage. The MOFs crystallographic density is one point to note as methane gas uptake data calculation was found to be based on it, it is larger than the packing density of the MOFs due to the empty space created by the particle packing.…”

Section: Methane Gasmentioning

confidence: 99%

Rising profile on the use of metal–organic frameworks (MOFs) for the removal of heavy metals from the environment: an overview

et al. 2018

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This review study is dealing with the recent advances and developments in the metal-organic framework (MOF) materials especially in the aspect of environmental remediation of heavy metals. Its application in some area of technological and mechanical advancement was also considered. The process of its synthesis and characterization was also put into consideration. Metal-organic frameworks can be said to be an exciting new class of nanoporous crystalline materials containing a metal as its central ion surrounded by organic ligands. An overwhelming characteristic of MOFs lies in its surface area which is amazingly large, exceeding those of known best activated carbons and zeolites. There is an increasingly high demand in the application of MOFs for a multitude of environmental uses or application to be used for capturing and separating various unwanted or even environmentally harmful chemicals, elements or materials. The advantage of MOFs over other known adsorbent materials, such as zeolites and carbon black, is that it possesses a far greater surface area along with amazingly great pore properties. In this review the synthesis and characterization of MOFs, the fate of heavy metals, the application of MOFs in heavy metals remediation and other means of heavy metals remediation are well discussed.

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Section: Methane Gasmentioning

confidence: 99%

Rising profile on the use of metal–organic frameworks (MOFs) for the removal of heavy metals from the environment: an overview

et al. 2018

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“…CaCO 3 -LTN hybrid materials were synthesized referencing the methods described in the literature [20]. 0-0.5 g lentinan was added into 10 ml 0.33 mol L À1 CaCl 2 solution under stirring for an hour at 25°C, and then the solution was filtered; 10 ml 0.33 mol L À1 Na 2 CO 3 was added by rapidly stirring for 10 min.…”

Section: Preparation Of Caco 3 -Ltn Hybrid Materialsmentioning

confidence: 99%

“…Inorganic-organic hybrid materials with porous structure have more advantages on adsorption, and their adsorption properties have been applied widely in remove of environmental pollutants. For example, cobalt-trioctylamine inorganic-organic hybrid nanobelts showed excellent removal ability for the trace heavy metal ion Pb 2+ in wastewater [17]; Titania-silica-phosphonate triconstituent hybrid mesoporous materials was used as adsorbents both in gas and liquid phases [18]; among these inorganic-organic materials, CaCO 3 -organic polymer hybrid materials is very arrestive due to its controlled morphology and unique properties as well as being environmentally benign [19,20]. But it is till a challenge as regards their application potential.…”

Section: Introductionmentioning

confidence: 99%

Removal of triphenylmethane dyes by calcium carbonate–lentinan hierarchical mesoporous hybrid materials

Liu

Jiang

et al. 2015

Chemical Engineering Journal

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“…The important role of FTIR spectroscopy in such studies is either related to the characterization of sorbents, chemical modified sorbents, or to establish the mechanism involved in sorption processes (Cheng et al, 2012;Chen and Wang, 2012;Xu et al, 2012;Ma et al, 2012a;Wang et al, 2011;Jordan et al, 2011;Bardakçi and Bahçeli, 2010;Pokrovsky et al, 2008;Parolo et al, 2008).…”

Section: Traditional Transmission Ft-ir (T-ftir) Spectroscopy In Envimentioning

confidence: 99%

“…Studies on heavy metals and organic compounds removal from wastewaters using different natural and synthetic materials are many. The important role of FTIR spectroscopy in such studies is either related to the characterization of sorbents, chemical modified sorbents, or to Advanced Aspects of Spectroscopy 56 establish the mechanism involved in sorption processes (Cheng et al, 2012;Chen and Wang, 2012;Xu et al, 2012;Ma et al, 2012a;Wang et al, 2011;Jordan et al, 2011;Bardakçi and Bahçeli, 2010;Pokrovsky et al, 2008;Parolo et al, 2008).Biosorption is considered as an alternative process for the removal of heavy metals, metalloid species, compounds and particles from aqueous solution by biological materials (Mungasavalli et al, 2007). Biomaterials are adsorbent materials with high heavy metals adsorption capacity.…”

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confidence: 99%

Application of FTIR Spectroscopy in Environmental Studies

Simonescu¹

2012

Advanced Aspects of Spectroscopy

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Figure 1. Schematic representation of the electromagnetic spectrum (adapted from http://www2.chemistry.msu.edu/faculty/reusch/VirtTxtJml/Spectrpy/UV-Vis/spectrum)? Advanced Aspects of Spectroscopy 50Infrared radiation is divided into:near (NIR, ν = 10,000 -4,000 cm -1 ); -middle (MIR, ν = 4,000 -200 cm -1 ) and -far (FIR, ν = 200 -10 cm -1 ).Because all compounds show characteristic absorption/emission in the IR spectral region and based on this property they can be analyzed both quantitatively and qualitatively using FT-IR spectroscopy.Today FT-IR instruments are digitalized and are faster and more sensitive than the older ones. FT-IR spectrometers can detect over a hundred volatile organic compounds (VOC) emitted from industrial and biogenic sources. Gas concentrations in stratosphere and troposphere were determined using FT-IR spectrometers (Puckrin et al., 1996).In case of environmental studies FTIR Spectroscopy is used to analyze relevant amount of compositional and structural information concerning environmental samples (Grube et al., 2008). The analysis can be performed also to determine the nature of pollutants, but also to determine the bonding mechanism in case of pollutants removal by sorption processes. Techniques for measuring gas pollutants such as continuous air pollutants analyzer (SO2, NO2, O3, NH3), on-line gas chromatography (GC) used simple real-time instruments to quantify gas pollutants. They need to use several sensors in order to analyze multiple gas pollutants simultaneously.FT-IR spectroscopy coupled with other spectroscopic techniques such as AAS (atomic absorption spectroscopy) have been used to assess the impact of industrial and natural activities on air quality (Kumar et al., 2005;Childers et al., 2001).In addition to the traditional transmission FTIR (T-FTIR) methods (e.g. KBr-pellet or mull techniques), modern reflectance techniques are widely used today in environmental, agricultural, pharmaceuticals, and food studies. These modern techniques are attenuated total reflection FTIR (ATR-FTIR), and diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS). The choice of the method to be used depends on many factors such as: the information needed (bulk versus surface analysis), the physical form of the sample, the time required for sample preparation (Majedová et al., 2003).In the following there will be presented some of the most important research studies related to the involvement of FTIR spectroscopy in environmental studies. Traditional transmission FT-IR (T-FTIR) spectroscopy in environmental studiesTransmission spectroscopy is the oldest and most commonly used method for identifying either organic or inorganic chemicals providing specific information on molecular structure, chemical bonding and molecular environment. It can be applied to study solids, liquids or gaseous samples being a powerful tool for qualitative and quantitative studies. Application of FTIR Spectroscopy in Environmental Studies 51FTIR instrument's principle of function is the following: IR radi...

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Preparation of hybrid CaCO3–pepsin hemisphere with ordered hierarchical structure and the application for removal of heavy metal ions

Cited by 24 publications

References 34 publications

Rising profile on the use of metal–organic frameworks (MOFs) for the removal of heavy metals from the environment: an overview

Rising profile on the use of metal–organic frameworks (MOFs) for the removal of heavy metals from the environment: an overview

Removal of triphenylmethane dyes by calcium carbonate–lentinan hierarchical mesoporous hybrid materials

Application of FTIR Spectroscopy in Environmental Studies

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