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RISS 인기검색어
- 검색키워드
- 저자 : Mithun Sarker (검색결과 14 건)
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Sarker, Mithun,Song, Ji Yoon,Jhung, Sung Hwa Elsevier 2018 CHEMICAL ENGINEERING JOURNAL -LAUSANNE- Vol.335 No.-
<P><B>Abstract</B></P> <P>Highly porous metal-organic framework (MOF) composites were synthesized by combining MIL-101(Cr) with graphene oxide (GnO). The porosity of the GnO/MIL-101 composite was increased by composing GnO onto the MOF up to a certain ratio. The GnO/MIL-101 composites were utilized to adsorb anti-inflammatory drugs (AIDs) such as naproxen (NAP) and ketoprofen (KTP) from water. It was observed that GnO/MIL-101 composites displayed highly improved adsorption toward both NAP and KTP relative to pristine MIL-101 and commercial AC. MIL-101_GnO(3%) had a NAP adsorption capacity 2.1 and 1.4 times those of commercial AC and pristine MIL-101, respectively; its adsorption performance was also very competitive with other reported adsorbents. The improved adsorption performance of the composites for NAP was credited to H-bonding because of the presence of several functional groups in the composites. MIL-101_GnO(3%) and NAP act as a H-bond donor and acceptor, respectively. Moreover, MIL-101_GnO(3%) can be regenerated without severe deterioration by simple ethanol washing and can be reused for successive adsorption. Therefore, the GnO/MIL-101 composite is suggested as an efficient adsorbent for the removal of AIDs from water.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Highly porous graphene oxide/MOF composites were prepared in one pot synthesis. </LI> <LI> Adsorptive removal of anti-inflammatory drugs was done with the obtained composites. </LI> <LI> MIL-101_GnO(3%) showed remarkable adsorption capacity for AIDs removal. </LI> <LI> Plausible adsorption mechanism was suggested by adsorption in wide conditions. </LI> <LI> MIL-101_GnO(3%) is proposed as a promising/reusable adsorbent for removing AIDs. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
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Sarker, Mithun,An, Hyung Jun,Jhung, Sung Hwa American Chemical Society 2018 The Journal of Physical Chemistry Part C Vol.122 No.8
<P>Nitrogen-containing compounds (NCCs) such as indole (IND) and quinolone (QUI) in a model fuel were adsorbed over pristine and variously functionalized metal–organic frameworks (MOFs) (here, UiO-66 and −NH<SUB>2</SUB>, −NH<SUB>3</SUB><SUP>+</SUP>, −COOH, −COONa, −OH, −SO<SUB>3</SUB>H functionalized UiO-66s) to quantitatively understand the interactions between the adsorbates (IND and QUI) and UiO-66s. The adsorbed quantity of IND and QUI increased linearly with increasing number of H-acceptors and H-donors (for H-bond), respectively, on UiO-66s (excluding one MOF for each adsorption), confirming the importance of H-bonding in the adsorption. UiO-66-NH<SUB>3</SUB><SUP>+</SUP> and UiO-66-NH<SUB>2</SUB> showed a deviated trend in the IND and QUI adsorption, respectively; this might be explained by cation−π interactions and base–base repulsion, respectively. Moreover, the QUI adsorption increased linearly with increasing number of acidic sites on the MOFs (excluding basic ones), also suggesting the importance of acid–base interactions. Finally, UiO-66-NH<SUB>3</SUB><SUP>+</SUP> showed the highest adsorption for both IND and QUI among the studied MOFs, suggesting that introducing an ammonium group on MOFs can be one way to develop a competitive adsorbent for the adsorptive denitrogenation of fuels.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jpccck/2018/jpccck.2018.122.issue-8/acs.jpcc.8b00761/production/images/medium/jp-2018-007617_0007.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/jp8b00761'>ACS Electronic Supporting Info</A></P>
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Sarker, Mithun,Song, Ji Yoon,Jeong, Ah Rim,Min, Kil Sik,Jhung, Sung Hwa Elsevier 2018 Journal of hazardous materials Vol.344 No.-
<P><B>Abstract</B></P> <P>A highly porous metal-organic framework (MOF), MIL-101, was modified for the first time with the nucleobase adenine (Ade) by grafting onto the MOF. The Ade-grafted MOF, Ade-MIL-101, was further protonated to obtain P-Ade-MIL-101, and these MOFs were utilized to remove nitrogen-containing compounds (NCCs) (such as indole (IND) and quinoline (QUI)) from a model fuel by adsorption. These functionalized MOFs exhibited remarkable adsorption performance for NCCs compared with that shown by commercial activated carbon (AC) and pristine MIL-101, even though the porosities of the functionalized-MOFs were lower than that of pristine MIL-101. P-Ade-MIL-101 has 12.0 and 10.8 times capacity to that of AC for IND and QUI adsorption, respectively; its adsorption performance was competitive with that of other reported adsorbents. The remarkable adsorption of IND and QUI by Ade-MIL-101 was attributed to H-bonding. H-bonding combined with cation-π interactions was proposed as the mechanism for the removal of IND by P-Ade-MIL-101, whereas acid-base interactions were thought to be responsible for QUI adsorption by P-Ade-MIL-101. Moreover, P-Ade-MIL-101 can be regenerated without any severe degradation and used for successive adsorptions. Therefore, P-Ade-MIL-101 was recommended as an effective adsorbent for fuel purification by adsorptive removal of NCCs.</P> <P><B>Highlights</B></P> <P> <UL> <LI> MIL-101 MOF was firstly grafted with adenine and further protonated. </LI> <LI> Modified MOFs were applied in adsorptive denitrogenation of model fuel. </LI> <LI> The new adsorbents showed remarkable adsorption capacities for indole and quinoline. </LI> <LI> The new adsorbents can be regenerated by simple ethanol washing. </LI> <LI> Adsorption mechanisms (H-bonding, cation-π, acid-base interaction) were suggested. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
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Sarker, Mithun,Shin, Subin,Jhung, Sung Hwa Elsevier Scientific Pub. Co 2019 Journal of hazardous materials Vol.378 No.-
<P><B>Abstract</B></P> <P>Nitrogen-containing carbons were obtained via pyrolysis of melamine-loaded metal azolate frameworks (named mela@MAF-6), a sub-class of metal organic frameworks. The porosity and defect concentration of the obtained carbons (named as CDM@M-6) were dependent on the quantity of melamine loaded in the mela@MAF-6. The CDM@M-6 s were applied for the adsorptive removal of nitroimidazole antibiotics (NIABs) from water; the performance of CDM@M-6, particularly CDM(0.25)@M-6, was outstanding for the elimination of NIABs such as dimetridazole (DMZ), metronidazole (MNZ), and menidazole (MZ)) from water. The adsorption capacity of CDM(0.25)@M-6 for DMZ, MNZ, and MZ was higher than that of any adsorbent reported so far. The highest adsorptive performance of CDM(0.25)@M-6 for DMZ (<I>Q</I> <SUB>0</SUB>: 621 mg/g) and MNZ (<I>Q</I> <SUB>0</SUB>: 702 mg/g) was explained by hydrogen bonding, where CDM@M-6 and DMZ/MNZ acted as a H-donor and H-acceptor, respectively. In addition, CDM(0.25)@M-6 could be regenerated via ethanol washing and reused for next cycles without any severe decrease in performance. Therefore, CDM@M-6 is recommended as a suitable adsorbent for the elimination of NIABs from water.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Porous carbon was derived firstly from pyrolysis of melamine-loaded MAF-6. </LI> <LI> The carbon showed the highest adsorption for the nitroimidazole antibiotics from water. </LI> <LI> Melamine loaded in suitable quantity increased porosity of carbon and capacity for NIABs. </LI> <LI> The adsorption could be explained with H-bonding where NIABs were H-acceptor. </LI> <LI> The carbon was reusable with little decrease in performances by ethanol washing. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
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Sarker, Mithun,Shin, Subin,Jhung, Sung Hwa Elsevier 2019 Journal of industrial and engineering chemistry Vol.74 No.-
<P><B>Abstract</B></P> <P>A mesoporous metal-organic-framework with amino group, PCN-100, was modified with terephthaloyl chloride (TC). The adsorption/delivery of vitamin E were carried out with pristine PCN-100, TC-modified PCN-100 (TC-PCN-100) and activated carbon (AC). The adsorbed quantity was in the order: AC < TC-PCN-100 < PCN-100; however, the delivery rate was in the order: TC-PCN-100 < PCN-100 < AC. Importantly, the release rate of vitamin E from TC-PCN-100 was considerably lower than that from PCN-100 and AC; and this slow release could be explained with hydrophobic, π–π and H-bonding interactions. Moreover, the delivery rate from PCN-100s could be decreased by decreasing pH.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Mesoporous MOF, PCN-100, was functionalized to introduce various functionalities. </LI> <LI> Modified PCN-100 showed remarkable performances for vitamin E storage/delivery. </LI> <LI> The favorable interaction can be explained with hydrophobic, π–π and H–bonding. </LI> <LI> The delivery rate could be controlled by changing pH of the solution for release. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
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Mithun Sarker,신수빈,정성화 한국공업화학회 2019 Journal of Industrial and Engineering Chemistry Vol.74 No.-
A mesoporous metal-organic-framework with amino group, PCN-100, was modified with terephthaloylchloride (TC). The adsorption/delivery of vitamin E were carried out with pristine PCN-100, TC-modifiedPCN-100 (TC-PCN-100) and activated carbon (AC). The adsorbed quantity was in the order: AC < TC-PCN-100 < PCN-100; however, the delivery rate was in the order: TC-PCN-100 < PCN-100 < AC. Importantly,the release rate of vitamin E from TC-PCN-100 was considerably lower than that from PCN-100 and AC;and this slow release could be explained with hydrophobic, p–p and H-bonding interactions. Moreover,the delivery rate from PCN-100s could be decreased by decreasing pH.
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Sarker, Mithun,Song, Ji Yoon,Jhung, Sung Hwa Elsevier 2018 Chemical Engineering Journal Vol.331 No.-
<P><B>Abstract</B></P> <P>UiO-66 functionalized with –NH– and –COOH groups was obtained by postsynthetic modification of aminated UiO-66. In order to introduce uncoordinated carboxyl groups into metal–organic frameworks (MOFs), UiO-66-NH<SUB>2</SUB> was treated with oxalyl chloride to form UiO-66 functionalized with –NH– and –COOH groups (UiO-66-NH-CO-COOH). The successful functionalization of the MOF with uncoordinated carboxyl group was confirmed using some characterization techniques. The obtained MOFs were applied in liquid-phase adsorptions for both water and a model fuel. The UiO-66-NH-CO-COOH, consisting of dual functional groups (–NH– and –COOH), showed better performance than pristine UiO-66, UiO-66-NH<SUB>2</SUB>, and commercial activated carbon (AC) in the removal of several organics, e.g. triclosan (TCS) from water, and indole (IND) and quinoline (QUI) from model fuel. The UiO-66-NH-CO-COOH adsorbed ∼2.4 and 5.5 times more TCS and IND, respectively, than AC and its adsorption performances were comparable with other reported adsorbents. The maximum adsorption capacity of UiO-66-NH-CO-COOH for IND was 402mg·g<SUP>−1</SUP>, which was the highest among all reported UiO-66 MOFs. The remarkable adsorption efficiency of the MOF for both aqueous and non-aqueous phases was explained in terms of H-bonding: UiO-66-NH-CO-COOH and adsorbates act as H-bond acceptor and H-bond donor, respectively. Moreover, UiO-66-NH-CO-COOH can be regenerated by simple solvent washing and can be reused several times for the removal of the studied adsorbates. Therefore, UiO-66-NH-CO-COOH having both –NH– and –COOH groups is recommended as a versatile adsorbent for both aqueous- and non-aqueous-phase adsorptions.</P> <P><B>Highlights</B></P> <P> <UL> <LI> UiO-66 with both –NH– and –COOH groups was synthesized for the first time. </LI> <LI> The obtained MOF was applied in adsorption of several hazardous organics. </LI> <LI> The MOF was very effective adsorbents for aqueous and non-aqueous phases. </LI> <LI> The adsorption can be explained with H-bonding (adsorbates were H-donors). </LI> <LI> The MOF can be potential adsorbent due to high adsorption capacity/reusability. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
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Sarker, Mithun,An, Hyung Jun,Yoo, Dong Kyu,Jhung, Sung Hwa Elsevier 2018 Chemical engineering journal Vol.338 No.-
<P><B>Abstract</B></P> <P>Nitrogen-doped porous carbons were derived through direct carbonization of ionic liquid (IL)-loaded Al-based metal-organic frameworks (MOFs, or porous coordination polymers) called AlPCP (IL@AlPCP), where IL was added to increase nitrogen contents of derived carbons. Porous carbons derived from IL@AlPCP and pristine AlPCP (called CDIL@AlPCP and CDAlPCP, respectively) were characterized using various techniques and utilized in liquid-phase adsorptions for both aqueous and non-aqueous media to realize their potential application in water and fuel purifications. The adsorptive performance of CDIL@AlPCP was remarkable for the removal of several pharmaceutical and personal care products from water. For example, the adsorption capacity of CDIL@AlPCP was thus far found to be the highest for para-chloro-meta-xylenol (PCMX) as compared with any reported adsorbent (including CDAlPCP and AC). Moreover, CDIL@AlPCP was also very effective for triclosan and acetaminophen adsorptions. Similarly, the efficiency of CDIL@AlPCP for adsorptive desulfurization and denitrogenation of the model fuel was also noticeable. The remarkable adsorption efficiency of CDIL@AlPCP for both aqueous and non-aqueous phases was explained in terms of mainly H-bonding. The direction of H-bonding can also be defined (for example, PCMX contributed as an H-donor, and ample N and O species of carbon materials contributed as an H-acceptor). Moreover, CDIL@AlPCP can be regenerated through simple ethanol washing and can be reused several times. Therefore, CDIL@AlPCP is recommended as a promising adsorbent for purification of both aqueous and non-aqueous solutions.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Nitrogen doped mesoporous carbon was obtained by pyrolysis of ionic liquid@AlPCP. </LI> <LI> The mesoporous carbon showed remarkable adsorption for water and fuel purification. </LI> <LI> H-bonding was a probable mechanism for various adsorptive purifications. </LI> <LI> The adsorbates and carbons behaved mainly as H-donor and -acceptor, respectively. </LI> <LI> CDIL@AlCP was a remarkable adsorbent based on adsorption capacity/reusability. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
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Sarker, Mithun,Ahmed, Imteaz,Jhung, Sung Hwa Elsevier 2017 CHEMICAL ENGINEERING JOURNAL -LAUSANNE- Vol.323 No.-
<P><B>Abstract</B></P> <P>Highly porous nitrogen-doped carbon was obtained from the pyrolysis of ionic liquid (IL)-incorporated metal-organic frameworks (MOF, named ZIF-8) (IL@ZIF-8). IL@ZIF-8-derived carbon (IMDC), MOF-derived carbon (MDC, obtained from pure ZIF-8), and commercial activated carbon (AC) were applied in the removal of the toxic herbicides diuron [3-(3,4 dichlorophenyl)-1,1-dimethylurea), DUR] and 2,4-dichlorophenoxyacetic acid (2,4-D) from water. The adsorption capacity of IMDC was found to be the highest for DUR and was also remarkable for 2,4-D compared with any reported adsorbent, including MDC and AC. The maximum adsorption capacities of IMDC for DUR and 2,4-D were 284 and 448mg·g<SUP>−1</SUP>, respectively. The remarkable adsorption efficiency of IMDC is probably due to the abundant number of active sites present on its surface because of nitrogen doping and its relatively high porosity, even though it is less porous than MDC. To determine a plausible adsorption mechanism, not only detailed characterizations of the adsorbents were performed but also adsorptions across a wide pH range were carried out. Hydrogen bonding (IMDC: H-donor; adsorbates: H-acceptor) with hydrophobic and π-π interactions was suggested as a plausible mechanism for adsorption. Moreover, IMDC can be regenerated by a simple solvent treatment and used for successive adsorptive removal of the studied adsorbates. Therefore, IMDC is recommended as a potent adsorbent for the removal of herbicides such as DUR and 2,4-D from water.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Nitrogen-doped carbon (IMDC) was obtained by pyrolysis of ionic liquid@ZIF-8. </LI> <LI> Adsorptive removal of herbicides was done with the obtained IMDC. </LI> <LI> IMDC was most effective adsorbent for diuron and competitive for 2,4-D; and reusable. </LI> <LI> The adsorption can be explained with H-bonding (IMDC/herbicide: H-donor/acceptor). </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
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Sarker, Mithun,Shin, Subin,Jeong, Jong Hwa,Jhung, Sung Hwa Elsevier 2019 Chemical engineering journal Vol.371 No.-
<P><B>Abstract</B></P> <P>Dyes are considered as harmful water pollutants because of their high water solubility, wide uses and toxicity. A highly mesoporous metal-organic framework PCN-222(Fe), together with commercial activated carbon (AC), was applied for the removal of both cationic (brilliant green (BG), crystal violet (CV), and methylene blue (MB)) and anionic (acid red 1 (AR 1), acid blue 80 (AB 80) and methyl orange (MO)) dyes from water through adsorption. The adsorptive performances of PCN-222(Fe) are much higher than AC for big dyes (BG, CV, AR 1, and AB 80). On the contrary, PCN-222(Fe) and AC show not very much different performances for the adsorption of small dyes (MB and MO). The maximum adsorption capacity of PCN-222(Fe) for BG, CV, AR 1, and AB 80 was higher than that of any reported adsorbent so far. The remarkably high adsorption capacity of PCN-222(Fe) for BG (854 mg·g<SUP>−1</SUP>), CV (812 mg·g<SUP>−1</SUP>), AR 1 (417 mg·g<SUP>−1</SUP>) and AB 80 (371 mg·g<SUP>−1</SUP>) could be explained by suitable pore size of PCN-222(Fe) together with electrostatic and π-π interactions. Moreover, PCN-222(Fe) could be successfully regenerated and reused for several cycles without any severe decrease in adsorption performance. Therefore, PCN-222(Fe) is suggested as an effective adsorbent for the dyes (especially with big size) removal from water.</P> <P><B>Highlight</B></P> <P> <UL> <LI> PCN-222(Fe) showed the highest adsorption capacity for studied four big dyes. </LI> <LI> PCN-222(Fe) was effective for removal of big dyes, different from that of small dyes. </LI> <LI> Adsorption could be explained by suitable pore size, electrostatic and π-π interactions. </LI> <LI> PCN-222(Fe) could be easily recycled by ethanol washing. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
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