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Beta-cyclodextrin adsorbents to remove water pollutants—a commentary

《化学科学与工程前沿（英文）》 2022年 第16卷 第9期   页码 1407-1423 doi: 10.1007/s11705-022-2146-2

摘要： Beta-cyclodextrin-based adsorbent is a promising adsorbent because it has unique characteristics and able to form host-guest complexes with various organic compounds. Adsorption using beta-cyclodextrin-based adsorbent has continuously improved by various preparation strategies and crosslinking agents. This commentary aims to highlight the preparation strategies, properties, and adsorption mechanisms of beta-cyclodextrin-based adsorbents. The adsorbents can be generally classified according to the preparation methods and display high adsorption capacity especially for dyes. Particularly, composite/nanocomposite beta-cyclodextrin-based adsorbents exhibit outstanding adsorption capacity even though the surface area is lower than that of porous and magnetic beta-cyclodextrin-based adsorbents. The beta-cyclodextrin/chitosan functionalized graphene oxide hydrogel with specific surface of 17.6 m2·g–1 yields an extraordinarily maximum adsorption capacity of 1499 mg·g–1 methylene blue, while beta-cyclodextrin/chitosan modified with iron(II, III) oxide nanoparticles displays a much greater maximum adsorption capacity at 2780 mg·g–1. The hydrophobic interaction, functional groups, hydrogen bonding, and electrostatic interaction govern the adsorption to a greater capacity. Although this commentary is not exhaustive, the preparation strategies and illustrated mechanisms provide useful insights into the adsorbent–adsorbate interactions, cost-effective analysis, challenges, and future directions of beta-cyclodextrin-based adsorbents in wastewater treatment.

关键词： beta-cyclodextrin adsorbent     adsorption     inclusion complex     mechanism     water pollutant     wastewater treatment    

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-Cyclodextrin functionalized graphene oxide: an efficient and recyclable adsorbent for the removal of

Shanshan WANG, Yang LI, Xiaobin FAN, Fengbao ZHANG, Guoliang ZHANG

《化学科学与工程前沿（英文）》 2015年 第9卷 第1期   页码 77-83 doi: 10.1007/s11705-014-1450-x

摘要： A novel method for the preparation of -cyclodextrin grafted graphene oxide (GO- -CD) has been developed. The GO- -CD was characterized by Fourier transform infrared spectroscopy, C NMR spectroscopy, Raman spectroscopy and thermogravimetric analysis. The ability of GO- -CD to remove fuchsin acid from solution was also studied. The GO- -CD had an excellent adsorption capacity for fuchsin acid and could be recycled and reused. The adsorption capacities of GO- -CD for other dye pollutants such as methyl orange and methylene blue were also investigated. The absorption capacities for the three dyes are in the order: fuchsin acid>methylene blue>methyl orange.

关键词： graphene oxide     β-cyclodextrin     adsorption capacity     recycle    

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Impact of solids on biphasic biodegradation of phenanthrene in the presence of hydroxypropyl- β -cyclodextrin

Zhenyi ZHANG, Chihiro INOUE, Guanghe LI,

《环境科学与工程前沿（英文）》 2010年 第4卷 第3期   页码 329-333 doi: 10.1007/s11783-010-0232-z

摘要： The consequence of polycyclic aromatic hydrocarbons (PAHs) in the environment is of great concern. The hydrophobic properties of PAHs significantly impact phase distribution causing limited bioavailability. Enhanced biodegradation has been extensively carried out by surfactants and the redeployment effect was recognized. However, the quantitative relationship concerning the impact of solids was rarely reported. A batch of biphasic tests were carried out by introducing PYR-1 and hydroxypropyl--cyclodextrin (HPCD) into a mixture of phenanthrene solution and various glass beads (GB37-63, GB105-125, and GB350-500). The comparative results demonstrated that HPCD had little effect on microbial growth and was not degradable by bacterium. A model was proposed to describe the biodegradation process. The regression results indicated that the partition coefficient (1.234, 0.726 and 0.448 L·g) and the degradation rate (0 mmol·L: 0.055, 0.094, and 0.112; 20 mmol·L: 0.126, 0.141, and 0.156; 40 mmol·L: 0.141, 0.156 and 0.184 d) were positively and negatively correlated with the calculated total surface area (TSA) of solids, respectively. Degradation enhanced in the presence of HPCD, and the enhancing factor was calculated (20 mmol·L: 15.16, 40.01, and 145.5; 40 mmol·L: 13.29, 37.97, and 138.4), indicating that the impact of solids was significant for the enhancement of biodegradation.

关键词： biphasic biodegradation     hydroxypropyl-β     -cyclodextrin (HPCD)     polycyclic aromatic hydrocarbons (PAHs)    

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β-Cyclodextrin promoted oxidation of primary amines to nitriles in water

Dongpo SHI, Hongbing JI, Zhong LI

《化学科学与工程前沿（英文）》 2009年 第3卷 第2期   页码 196-200 doi: 10.1007/s11705-009-0051-6

摘要： A facile, efficient and substrate-selective oxidation of the primary amines with NaClO as oxidant catalyzed by cyclodextrin ( CD) has been developed in water for the first time, and the behavior of cyclodextrin that catalyzed the primary amines to nitriles in water was investigated. It was found that the primary amines which could form host-guest complexes with cyclodextrin were oxidized to nitriles with excellent yields at ambient temperature. The results show that cyclodextrin worked not only as a solubilizing agent but also as a catalyst in these reactions.

关键词： substrate-selective     amines oxidation     β-cyclodextrin    

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LDL adsorbent with dendrimer PAMAM as spacer

YUAN Yi, WANG Yanming, YU Yaoting

《化学科学与工程前沿（英文）》 2008年 第2卷 第4期   页码 434-438 doi: 10.1007/s11705-008-0084-2

摘要： Dendritic polymers are three-dimensional, highly ordered compounds formed by reiterative reaction sequences, and via discrete stages referred to as generations. To study the spacer effect of low density lipoprotein (LDL) adsorbent, we linked dendrimer polyamidoamine (PAMAM) generation 1 (G1), generation 3 (G3) and generation 5 (G5) to cellulose beads, respectively, and then determined the adsorption proportion of the adsorbents with PAMAM decorated with taurine. The result shows that the spacer with activated multi-points could efficiently improve the adsorption capacity of the adsorbent.

关键词： adsorption proportion     adsorbent     dendrimer polyamidoamine     reiterative     generation    

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Structural effect of fluorophore on phenylboronic acid fluorophore/cyclodextrin complex for selective

Takeshi Hashimoto, Mio Kumai, Mariko Maeda, Koji Miyoshi, Yuji Tsuchido, Shoji Fujiwara, Takashi Hayashita

《化学科学与工程前沿（英文）》 2020年 第14卷 第1期   页码 53-60 doi: 10.1007/s11705-019-1851-y

摘要： Based on the design of the fluorescent site of a fluorescent probe, we have created a unique system that changes its twisting response to sugar. Two probes were synthesized, in which phenylboronic acid and two kinds of aromatic fluorescent site (pyrene or anthracene) were conjugated by an amide bond. In the fluorescence measurement of pyrene-type probe , dimer fluorescence was observed at high pH. In induced circular dichroism (ICD) experiments, a response was observed only in the presence of glucose and -cyclodextrin, and no response was seen with fructose. On the other hand, in the fluorescence measurement of anthracene-type probe , dimer fluorescence was observed in the presence of both glucose and galactose, and the fluorescence was different from the case of fructose. When the ICD spectra of these inclusion complexes were measured, an inversion of the Cotton effect, which indicates a change in the twisted structure, was observed in galactose and glucose. These differences in response to monosaccharides may originate in the interaction between the fluorescent site and the cyclodextrin cavity.

关键词： sugar recognition     phenylboronic acid     cyclodextrin     fluorescence response     induced circular dichroism    

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Enrichment of CO from syngas with Cu(I)Y adsorbent by five-bed VPSA

Shuna LI, Huawei YANG, Donghui ZHANG

《化学科学与工程前沿（英文）》 2013年 第7卷 第4期   页码 472-481 doi: 10.1007/s11705-013-1351-4

摘要： Cu(I)Y adsorbent was prepared by reduction of Cu(II)Y which was prepared by ion exchange between the NaY zeolite and a solution of Cu(II) chloride. The dynamic adsorption capacity of Cu(I)Y for CO was calculated by adsorption breakthrough curve measured on a fixed bed at 30°C and 0.006 MPa (g) of CO partial pressure. The calculated CO adsorption capacity was 2.14 mmol/g, 37.5 times as much as that of NaY zeolite. The adsorption breakthrough curve experiment was also simulated with Aspen Adsorption software and the results were approximately consistent with experimental results. Then a five-bed VPSA process for separating CO from syngas on this adsorbent was dynamically simulated with Aspen Adsorption software with the adsorption pressure of 0.68 MPa (g) and the desorption pressure of -0.075 MPa (g). The results showed that CO was enriched from 32.3% to 95.16%–98.12%, and its recovery was 88.47%–99.44%.

关键词： Cu(I)Y adsorbent     breakthrough curve     desorption     VPSA     simulation    

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Downregulation effects of beta-elemene on the levels of plasma endotoxin, serum TNF-alpha, and hepatic

null

《医学前沿（英文）》 2011年 第5卷 第1期   页码 101-105 doi: 10.1007/s11684-011-0111-4

摘要：

It has been demonstrated that β-elemene could protect against carbon tetrachloride (CCl4)-induced liver fibrosis in our laboratory work, and the aim of this paper is to reveal the protective mechanisms of β-elemene. The hepatic fibrosis experimental model was induced by the hypodermical injection of CCl4 in Wistar male rats. β-elemene was intraperitoneally administered into rats for 8 weeks (0.1 mL/100 g bodyweight per day), and plasma endotoxin content was assayed by biochemistry. The serum TNF-α level was detected using radioactive immunity. CD14 expression in rat livers was measured by immunohistochemistry and Western blot. The results showed that β-elemene can downregulate the levels of plasma endotoxins, serum TNF-α, and hepatic CD14 expression in rats with liver fibrosis. β-elemene plays an important role in downregulating the lipopolysaccharide signal transduction pathway, a significant pathway in hepatic fibrosis development.

关键词： liver fibrosis     beta-elemene     endotoxin     CD14    

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Preparation, characterization of sludge adsorbent and investigations on its removal of hydrogen sulfide

Fen LI,Tao LEI,Yanping ZHANG,Jinzhi WEI,Ying YANG

《环境科学与工程前沿（英文）》 2015年 第9卷 第2期   页码 190-196 doi: 10.1007/s11783-014-0628-2

摘要： To recycle the sludge resource from sewage treatment plants and solve the problem of odor pollution, the sludge was converted into an adsorbent by carbonized pyrolysis and the process was optimized by orthogonal experiments. The capability for odor removal as well as the structure of the adsorbent was studied with H S as a target pollutant. The results indicate that the main factor affecting the deodorization performance of the adsorbent is the activating time. The sludge adsorbent sample SAC1 prepared under optimum conditions exhibits the best deodorization performance with a H S breakthrough time of 58 min and an iodine value nearly that of the coal activated carbon. The breakthrough time of H S is much longer than that on the coal activated carbon. On the other hand, characterization results from X-ray diffractometer (XRD), X-ray photoelectron spectrometer (XPS) and scanning electron microscope (SEM) techniques show that SAC1 is composed of mainly graphite carbon with lower oxygen content on the surface. The bulk of SAC1 exhibits a honeycomb structure with well developed porosity and a high specific surface area of 120.47 m ·g , with the average pore diameter being about 5 nm. Such a structure is in favor of H S adsorption. Moreover, SAC1 is detected to contain various metal elements such as Zn, Fe, Mg, etc., leading to a superior deodorization property to that of coal activated carbon.

关键词： orthogonal experiment     sludge adsorbent     hydrogen sulfide    

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Advanced materials: adsorbent and catalyst for environmental application

Junhua LI, Shubo DENG

《环境科学与工程前沿（英文）》 2013年 第7卷 第3期   页码 301-301 doi: 10.1007/s11783-013-0529-9

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K on the low-temperature hydrothermal stability of Cu/SAPO-34 and its synergic application with Fe/Beta

Chen Wang, Jun Wang, Jianqiang Wang, Meiqing Shen

《环境科学与工程前沿（英文）》 2021年 第15卷 第2期 doi: 10.1007/s11783-020-1322-1

摘要： Abstract • K+ hinder the structural degradation of Cu/SAPO-34 under humid condition<100°C. • K+ on Cu/SAPO-34 brings lower acidity and inferior SCR activity at high temperature. • Fe/Beta was used to compensate the low activity of Cu/SAPO-34 at high temperature. • The hybrid catalysts with KCu/SAPO-34 and Fe/Beta show a great potential for using. K ions were introduced onto Cu/SAPO-34 catalysts via the ion-exchange process in order to improve their stability under low-temperature hydrothermal aging. The changes in structure and copper-species contents of these catalysts upon hydrothermal aging were probed in order to investigate their effects on selective catalytic reduction (SCR) activity. For the fresh Cu/SAPO-34 catalysts, K ions had little influence on the chabazite framework but effected their acidities by exchanging with acid sites. After hydrothermal aging, the structural integrity and amount of active sites decreased on pure Cu/SAPO-34. While the K-loaded catalysts showed improved chabazite structure, acidity, and active site conservation with increasing K loading. However, although the 0.7 wt% K catalyst maintained the same crystallinity, active site abundance, and low-temperature SCR activity as the fresh catalyst upon aging, an apparent decrease in SCR activity at high temperature was observed because of the inevitable decrease in the number of Brönsted acid sites. To compensate for the activity disadvantage of K-loaded Cu/SAPO-34 at high temperature, Fe/Beta catalysts were co-employed with K-loaded Cu/SAPO-34, and a wide active temperature window of SCR activity was obtained. Thus, our study reveals that a combined system comprising Fe/Beta and K-loaded Cu/SAPO-34 catalysts shows promise for the elimination of NOx in real-world applications.

关键词： Selective catalytic reduction     Cu/SAPO-34 catalyst     Ion-exchanged K     Low-temperature hydrothermal stability     Fe/Beta catalyst    

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

《化学科学与工程前沿（英文）》 2023年 第17卷 第12期   页码 2037-2049 doi: 10.1007/s11705-023-2358-0

摘要： Although mesoporous silica with magnetically hybridized two-dimensional channel structures has been well studied in recent years, it remains a challenge to fabricate the counterpart with macroporous three-dimensional cubic structures since the highly acidic preparation conditions lead to dissolution of magnetic particles. Herein, we successfully prepared magnetic KIT-6 nano-composite and its amino derivatives by bearing acid-resistant iron oxide. The prepared materials exhibited excellent properties for U(VI) ions removal from aqueous solutions under various conditions. The experimental data show that the U(VI) adsorption features fast adsorption kinetics, high adsorption capacity and ideal selectivity toward U(VI). The adsorption process is of spontaneous and endothermic nature and ionic strength independence, and the adsorbents can be easily regenerated by acid treatment. Compared to pristine KIT-6, the introduction of magnetism does not reduce the efficiency of the material to remove U(VI) while exerting its role as a recovery adsorbent. The findings of this work further demonstrate the potential broad application prospects of magnetic hybrid mesoporous silica in radionuclide chelation.

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

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Reactive adsorption desulfurization over a Ni/ZnO adsorbent prepared by homogeneous precipitation

Aihua KONG, Yanyu WEI, Yonghong LI

《化学科学与工程前沿（英文）》 2013年 第7卷 第2期   页码 170-176 doi: 10.1007/s11705-013-1322-9

摘要： A high-performance Ni/ZnO adsorbent was prepared by homogeneous precipitation using urea hydrolysis and characterized by N adsorption-desorption, X-ray diffraction (XRD), and scanning electron microscope (SEM). The adsorbent was applied to the deep desulfurization of gasoline and showed a high breakthrough sulfur capacity and a remarkably high volume hourly space velocity. The effects of coexisting olefins in gasoline as well as adsorptive conditions on the adsorptive performance were examined. It was found that olefins in gasoline had a slightly inhibiting effect on the desulfurization performance of the adsorbent. The optimum conditions were 673 K, 1.0 Mpa with a volume hourly space velocity of 60 h . Under the optimum conditions, ultralow sulfur gasoline could be produced and the breakthrough sulfur capacity of the adsorbent was 360 mg-s/g-sorb for the model gasoline.

关键词： nickel     reactive adsorption     desulfurization     thiophene    

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Detection of presumed genes encoding beta-lactamases by sequence based screening of metagenomes derived

Gastón Azziz, Matías Giménez, Héctor Romero, Patricia M. Valdespino-Castillo, Luisa I. Falcón, Lucas A. M. Ruberto, Walter P. Mac Cormack, Silvia Batista

《环境科学与工程前沿（英文）》 2019年 第13卷 第3期 doi: 10.1007/s11783-019-1128-1

摘要：

• Beta-lactamase genes were found in all samples from distant places in Antarctica.

• Class C beta-lactamase coding genes were the most frequently found.

• Diversity of sequences exceeds that of the beta-lactamases from clinical environment.

关键词： Beta-lactamases     Antibiotic resistance coding genes     Metagenomes     Antarctic microbial mats    

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Concurrent adsorption and reduction of chromium(VI) to chromium(III) using nitrogen-doped porous carbon adsorbent

《环境科学与工程前沿（英文）》 2022年 第16卷 第5期 doi: 10.1007/s11783-021-1491-6

摘要：

• A high-efficiency N-doped porous carbon adsorbent for Cr(VI) was synthesized.

关键词： Chromium(VI)     Nitrogen-doped porous carbon     Adsorption     Reduction     Loofah sponge    

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标题 作者 时间 类型 操作

Beta-cyclodextrin adsorbents to remove water pollutants—a commentary

期刊论文

-Cyclodextrin functionalized graphene oxide: an efficient and recyclable adsorbent for the removal of

Shanshan WANG, Yang LI, Xiaobin FAN, Fengbao ZHANG, Guoliang ZHANG

期刊论文

Impact of solids on biphasic biodegradation of phenanthrene in the presence of hydroxypropyl- β -cyclodextrin

Zhenyi ZHANG, Chihiro INOUE, Guanghe LI,

期刊论文

β-Cyclodextrin promoted oxidation of primary amines to nitriles in water

Dongpo SHI, Hongbing JI, Zhong LI

期刊论文

LDL adsorbent with dendrimer PAMAM as spacer

YUAN Yi, WANG Yanming, YU Yaoting

期刊论文

Structural effect of fluorophore on phenylboronic acid fluorophore/cyclodextrin complex for selective

Takeshi Hashimoto, Mio Kumai, Mariko Maeda, Koji Miyoshi, Yuji Tsuchido, Shoji Fujiwara, Takashi Hayashita

期刊论文

Enrichment of CO from syngas with Cu(I)Y adsorbent by five-bed VPSA

Shuna LI, Huawei YANG, Donghui ZHANG

期刊论文

Downregulation effects of beta-elemene on the levels of plasma endotoxin, serum TNF-alpha, and hepatic

null

期刊论文

Preparation, characterization of sludge adsorbent and investigations on its removal of hydrogen sulfide

Fen LI,Tao LEI,Yanping ZHANG,Jinzhi WEI,Ying YANG

期刊论文

Advanced materials: adsorbent and catalyst for environmental application

Junhua LI, Shubo DENG

期刊论文

K on the low-temperature hydrothermal stability of Cu/SAPO-34 and its synergic application with Fe/Beta

Chen Wang, Jun Wang, Jianqiang Wang, Meiqing Shen

期刊论文

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

期刊论文

Reactive adsorption desulfurization over a Ni/ZnO adsorbent prepared by homogeneous precipitation

Aihua KONG, Yanyu WEI, Yonghong LI

期刊论文

Detection of presumed genes encoding beta-lactamases by sequence based screening of metagenomes derived

Gastón Azziz, Matías Giménez, Héctor Romero, Patricia M. Valdespino-Castillo, Luisa I. Falcón, Lucas A. M. Ruberto, Walter P. Mac Cormack, Silvia Batista

期刊论文

Concurrent adsorption and reduction of chromium(VI) to chromium(III) using nitrogen-doped porous carbon adsorbent

期刊论文