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Magnetic KIT-6 nano-composite and its amino derivatives as convenient adsorbent for U(VI) sequestration

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 2037-2049 doi: 10.1007/s11705-023-2358-0

Abstract: Herein, we successfully prepared magnetic KIT-6 nano-composite and its amino derivatives by bearing acid-resistant

Keywords： magnetic nanoparticle     3D mesoporous silica     amino functionalization     adsorption of U(VI)     acid resistance    

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Sustainable functionalization and modification of materials via multicomponent reactions in water

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 9,   Pages 1318-1344 doi: 10.1007/s11705-022-2150-6

Abstract: established firm ground providing essential design criteria to develop advanced tools for efficient functionalizationTo date, there is no exclusive review to report the sustainable functionalization and modification ofutility of various kinds of multicomponent reactions in water and aqueous media as green methods for functionalization

Keywords： materials     multicomponent reactions     modification     functionalization     water    

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Surface modification of broom sorghum-based activated carbon via functionalization with triethylenetetramine

Elaheh Mehrvarz, Ali A. Ghoreyshi, Mohsen Jahanshahi

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 2,   Pages 252-265 doi: 10.1007/s11705-017-1630-6

Abstract: A new type of activated carbon (AC) was synthesized using broom sorghum stalk as a low cost carbon source through chemical activation with H PO and KOH. The AC obtained by KOH had the largest BET surface area of 1619 m ·g and the highest micropore volume of 0.671 cm ·g . CO adsorption was enhanced by functionalizing the AC with two different amines: triethylenetetramine (TETA) and urea. The structure of the prepared ACs was characterized by Brunauer-Emmett-Teller method, scanning electron microscopy, Fourier transform infrared spectroscopy, thermogravimetric analysis and acid-base Boehm titration analyses. The adsorption behavior of CO onto raw and amine-functionalized ACs was investigated in the temperature range of 288–308 K and pressures up to 25 bar. The amount of CO uptake at 298 K and 1 bar achieved by AC-TETA and AC-urea was 3.22 and 2.33 mmol·g which shows a 92% and 40% improvement compared to pristine AC (1.66 mmol·g ), respectively. Among different model isotherms used to describe the adsorption equilibria, Sips isotherm presented a perfect fit in all cases. Gas adsorption kinetic study revealed a fast kinetics of CO adsorption onto the ACs. The evaluation of the isosteric heat of adsorption demonstrated the exothermic nature of the CO adsorption onto unmodified and modified samples.

Keywords： activated carbon     broom sorghum     functionalization     CO2 capture    

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Catalytic conversion of biomass-derived compounds to various amino acids: status and perspectives

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 7,   Pages 817-829 doi: 10.1007/s11705-022-2254-z

Abstract: Amino acids are important nitrogen-containing chemicals that have a variety of applications.Currently, fermentation is the widely employed method to produce amino acids; however, the products aremostly limited to natural amino acids in the L-configuration.Catalytic synthesis is an alternative approach for the synthesis of amino acids with different typesMaking full use of inherent nitrogen in biomass (i.e., chitin and protein) to produce amino acids avoids

Keywords： biomass     amino acids     chitin     nitrogen-containing compounds     lignocellulose    

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Crosslinking acrylamide with EDTA-intercalated layered double hydroxide for enhanced recovery of Cr(VI) and Congo red: Adsorptive and mechanistic study

Jing Li, Haiqin Yu, Xue Zhang, Rixin Zhu, Liangguo Yan

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 3, doi: 10.1007/s11783-020-1229-x

Abstract: Functional groups of AM and EDTA in composite increased removal of Cr(VI) and CR. Removal process reached equilibrium within 30 min and was minimally affected by pH. Elimination of Cr(VI) was promoted by coexisting CR. Adsorption process of CR was less influenced by the presence of Cr(VI). Mechanisms were electrostatic attraction, surface complexation and anion exchange. We prepared ethylenediaminetetraacetic acid (EDTA)-intercalated MgAl-layered double hydroxide (LDH-EDTA), then grafted acrylamide (AM) to the LDH-EDTA by a cross-linking method to yield a LDH-EDTA-AM composite; we then evaluated its adsorptive ability for Congo red (CR) and hexavalent chromium (Cr(VI)) in single and binary adsorption systems. The adsorption process on LDH-EDTA-AM for CR and Cr(VI) achieved equilibrium quickly, and the removal efficiencies were minimally affected by initial pH. The maximum uptake quantities of CR and Cr(VI) on LDH-EDTA-AM were 632.9 and 48.47 mg/g, respectively. In mixed systems, chromate removal was stimulated by the presence of CR, while the adsorption efficiency of CR was almost not influenced by coexisting Cr(VI). The mechanisms involved electrostatic attraction, surface complexation, and anion exchange for the adsorption of both hazardous pollutants. In the Cr(VI) adsorption process, reduction also took place. The removal efficiencies in real contaminated water were all higher than those in the laboratory solutions.

Keywords： Chromate     Dye adsorption     Simultaneous removal     Cross-linking method     Amino functionalization    

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Removal of endocrine disrupting chemicals from water through urethane functionalization of microfiltration

Frontiers of Environmental Science & Engineering 2023, Volume 18, Issue 4, doi: 10.1007/s11783-024-1805-6

Abstract:

● Urethane functionalities created on PES membranes via electron beam irradiation.

Keywords： Surface functionalization     Electron beam irradiation     Microfiltration     Endocrine disrupting chemicals    

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Insights into the changes of amino acids, microbial community, and enzymatic activities related with

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 3, doi: 10.1007/s11783-023-1635-y

Abstract:

● The highest seed germination index was achieved at 0.3 g/g total solids of food waste.

Keywords： Composting     Food waste     Amino acids     Microbial community     Enzymatic activity     Nutrient quality    

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Immobilization of penicillin G acylase onto amino-modified silica hydrogel

Weibing Dong, Huining HE, Junbo Gong, Victor C. YANG,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 1,   Pages 87-90 doi: 10.1007/s11705-009-0298-y

Abstract: Amino-modified silica hydrogel (N-MSHG) was prepared by a simple sol-gel processing via the co-condensationThe results showed that the amino-modified gel was a mesoporous material with an average pore size of

Keywords： gravimetric     amino-modified     efficient     Amino-modified     amoxicillin    

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Erratum to: Synthesis of vinasse-dolomite nanocomposite biochar via a novel developed functionalization

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 5, doi: 10.1007/s11783-021-1387-5

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Insulin resistance and the metabolism of branched-chain amino acids

Jingyi Lu, Guoxiang Xie, Weiping Jia, Wei Jia

Frontiers of Medicine 2013, Volume 7, Issue 1,   Pages 53-59 doi: 10.1007/s11684-013-0255-5

Abstract: Branched-chain amino acids (BCAAs), namely valine, leucine and isoleucine, are among the nine essentialamino acids, accounting for 35% of the essential amino acids in muscle proteins and 40% of the preformedamino acids required by mammals.The BCAAs are particularly responsive to the inhibitory insulin action on amino acid release by skeletal

Keywords： branched-chain amino acids     leucine     isoleucine     valine     insulin resistance    

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Anaerobic digestion of sludge by different pretreatments: Changes of amino acids and microbial community

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 2, doi: 10.1007/s11783-021-1458-7

Abstract:

•Tryptophan protein, and aromatic protein I/II were the key identified proteins.

Keywords： Sludge pretreatments     Dissolved organic nitrogen     Proteins     Amino acids     Structural equation model     Metagenomic    

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Continuous amino-functionalized University of Oslo 66 membranes as efficacious polysulfide barriers for

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 2,   Pages 194-205 doi: 10.1007/s11705-022-2206-7

Abstract: Herein, continuous amino-functionalized University of Oslo 66 membranes supported on carbon nanotube

Keywords： lithium−sulfur batteries     amino-functionalized University of Oslo 66 membrane     polysulfide     interlayer    

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Synthesis and anticancer activity of (+)-nopinone-based 2-amino-3-cyanopyridines

Shengliang LIAO,Shibin SHANG,Minggui SHEN,Xiaoping RAO,Hongyan SI,Jie SONG,Zhanqian SONG

Frontiers of Agricultural Science and Engineering 2015, Volume 2, Issue 4,   Pages 335-340 doi: 10.15302/J-FASE-2015079

Abstract: Twelve (+)-nopinone-based 2-amino-3-cyanopyridines 4a–l were synthesized from (–)-β-pinene.

Keywords： b-pinene     nopinone     synthesis     2-amino-3-cyanopyridine     anticancer    

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Improvement in the synthesis of 2-(5-amino-1,2,4-thiadiazol-3-yl)-2-(Z)-methoxyiminoacetic acid 2-benzothiazolyl

GAO Shihao, SUN Chenghui, ZHAO Xinqi, GAO Changquan

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 1,   Pages 80-84 doi: 10.1007/s11705-008-0017-0

Abstract: 2-(5-Amino-1,2,4-thiadiazol-3-yl)-2-(Z)-methoxyiminoacetic acid 2-benzothiazolyl thioester(III), an importantintermediate of the fourth generation cephalosporins, was efficiently synthesized by reacting 2-(5-amino

Keywords： 5-Amino-1     2     4-thiadiazol-3-yl     1     2-dichloroethane     important intermediate     2-benzothiazolyl thioester     temperature    

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Visualization of amino acid composition differences between processed protein from different animal species

Xingfan ZHOU,Zengling YANG,Longjian CHEN,Lujia HAN

Frontiers of Agricultural Science and Engineering 2016, Volume 3, Issue 2,   Pages 171-179 doi: 10.15302/J-FASE-2016095

Abstract: Amino acids are the dominant organic components of processed animal proteins, however there has beenIn this study, self-organizing feature maps (SOFM) were used to visualize amino acid composition of fishSOFM display the similarities and differences in amino acid composition between protein sources and effectivelyAmino acid composition was shown to be useful for distinguishing fish meal from MBM due to their largeHowever, the amino acid composition of the three MBMs was quite similar.

Keywords： self-organizing feature maps     visualization     processed animal proteins (PAPs)     amino acid    

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Title Author Date Type Operation

Magnetic KIT-6 nano-composite and its amino derivatives as convenient adsorbent for U(VI) sequestration

Journal Article

Sustainable functionalization and modification of materials via multicomponent reactions in water

Journal Article

Surface modification of broom sorghum-based activated carbon via functionalization with triethylenetetramine

Elaheh Mehrvarz, Ali A. Ghoreyshi, Mohsen Jahanshahi

Journal Article

Catalytic conversion of biomass-derived compounds to various amino acids: status and perspectives

Journal Article

Crosslinking acrylamide with EDTA-intercalated layered double hydroxide for enhanced recovery of Cr(VI) and Congo red: Adsorptive and mechanistic study

Jing Li, Haiqin Yu, Xue Zhang, Rixin Zhu, Liangguo Yan

Journal Article

Removal of endocrine disrupting chemicals from water through urethane functionalization of microfiltration

Journal Article

Insights into the changes of amino acids, microbial community, and enzymatic activities related with

Journal Article

Immobilization of penicillin G acylase onto amino-modified silica hydrogel

Weibing Dong, Huining HE, Junbo Gong, Victor C. YANG,

Journal Article

Erratum to: Synthesis of vinasse-dolomite nanocomposite biochar via a novel developed functionalization

Journal Article

Insulin resistance and the metabolism of branched-chain amino acids

Jingyi Lu, Guoxiang Xie, Weiping Jia, Wei Jia

Journal Article

Anaerobic digestion of sludge by different pretreatments: Changes of amino acids and microbial community

Journal Article

Continuous amino-functionalized University of Oslo 66 membranes as efficacious polysulfide barriers for

Journal Article

Synthesis and anticancer activity of (+)-nopinone-based 2-amino-3-cyanopyridines

Shengliang LIAO,Shibin SHANG,Minggui SHEN,Xiaoping RAO,Hongyan SI,Jie SONG,Zhanqian SONG

Journal Article

Improvement in the synthesis of 2-(5-amino-1,2,4-thiadiazol-3-yl)-2-(Z)-methoxyiminoacetic acid 2-benzothiazolyl

GAO Shihao, SUN Chenghui, ZHAO Xinqi, GAO Changquan

Journal Article

Visualization of amino acid composition differences between processed protein from different animal species

Xingfan ZHOU,Zengling YANG,Longjian CHEN,Lujia HAN

Journal Article