Chemistry-An Asian Journal
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2020
·Vol. 15
·期 8
·1272-1276
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IF 4.056
Yueming Cao,Peipei Li,Tengteng Wu,Meiling Liu,Youyu Zhang
Graphical HKUST-1 (Cu−BTC, BTC=benzene-1,3,5 tricarboxylate) was selected as an electrocatalyst for the reaction of conversion N 2 to NH 3 under ambient conditions. At −0.75 V vs. reversible hydrogen electrode, it achieves excellent performance with high NH 3 yield (46.63 μg h −1 mg −1 cat. or 4.66 μg h −1 cm −2 ) and Faraday efficiency (2.45%). Electrolytic ammonia synthesis from nitrogen at ambient conditions is appearing as a promising alternative to the Haber-Bosch process which is consuming high energy and emitting CO 2 . Here, a typical MOF material, HKUST-1 (Cu−BTC, BTC=benzene-1,3,5-tricarboxylate), was selected as an electrocatalyst for the reaction of converting N 2 to NH 3 under ambient conditions. At −0.75 V vs. reversible hydrogen electrode, it achieves excellent catalytic performance in the electrochemical synthesis of ammonia with high NH 3 yield (46.63 μg h −1 mg −1 cat. or 4.66 μg h −1 cm −2 ) and good Faraday efficiency (2.45%). It is indicated that the good performance of the HKUST-1 catalyst may originate from the formation of Cu(I). In addition, the catalyst also has good selectivity for N 2 to NH 3 .
研究领域:
材料科学
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电化学
·
催化反应
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
·
IF 9.7
Yuting Li,Yueyang Xu,Erjian Huang,Liming Kong,Yongping Zeng
Thiophene-like sulfides present in fuel oil release sulfur oxides (SO x ) during combustion, which pose significant risks for both environmental sustainability and public health. Adsorption desulfurization (ADS) has garnered considerable attention because of its mild operating conditions, low production costs, and minimal impact on the octane number of fuels. Metal-organic frameworks used as desulfurizing adsorbents provide several advantages, including a high specific surface area and easily adjustable structures . Here, we synthesized the micro/mesoporous adsorbent CeO 2 @HP-HKUST-1 (CeO 2 @Hierarchical Porous-Hong Kong University of Science and Technology-1) through the hybridization of salicylic acid (SA) using a solvothermal method. We assessed the adsorption performance of CeO 2 @HP- HKUST-1 _ 1.5 for benzothiophene and thiophene through batch and breakthrough adsorption experiments. The adsorption capacities for thiophene and benzothiophene were measured at 21.2 mg S/g and 35.3 mg S/g, respectively. Remarkably, in competitive toluene experiments, the adsorption capacity for benzothiophene remained significant at 28.9 mg S/g, due to enhanced Ce–S bonding interactions and the exposure of unsaturated metal centers of Cu. Additionally, regeneration experiments demonstrated that CeO 2 @HP-HKUST-1 retained excellent adsorption capacities after four cycles. These findings highlight the potential of CeO 2 @HP-HKUST-1 as an effective adsorbent for desulfurization applications.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nanomaterials
·
2022
·Vol. 12
·期 21
·3879
·
IF 5.719
Hongqiang Dong,Yuke He,Chen Fan,Zhongqiang Zhu,Chunrong Zhang,Xinju Liu,Kun Qian,Tao Tang
Based on high surface areas, adjustable porosity and microbicide activity, metal-organic frameworks (MOFs) HKUST-1 are widely used as drug release carriers for their slow degradation characteristics under slightly acidic conditions. In this work, porous HKUST-1 was reacted rapidly by cholinium salt (as the deprotonation agent and template) in an aqueous solution at room temperature. A novel antimicrobial system based on an imazalil encapsulated metal organic framework (imazalil IL-3@HKUST-1) was established. Imazalil IL-3@HKUST-1 could achieve synergism in inhibiting pathogenic fungi and bacteria. Moreover, six days after treatment, the slow and constant release of imazalil from imazalil IL@HKUST-1 exhibited better sustainability and microbicidal activity than imazalil. We believe that the method may provide a new strategy for related plant diseases caused by bacteria or fungi.Keywords:imazalil;ionic liquid;HKUST-1;antimicrobial activity;safety
研究领域:
植物病理学
·
药物递送系统
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NORDIC PULP & PAPER RESEARCH JOURNAL
·
2024
·
IF 0.9
Tianhao Wang,Luyang Wang,Shun Liu,Lin Chen,Xin Jin,Haitang Liu,Xiaoyuan Liao
In this work, a strategy of in situ 3D hierarchical porous HKUST-1/cellulose/chitosan (CSGA/HKUST-1) composite aerogels were synthesized using ethylene glycol diglycidyl ether (EGDE) as a cross-linking agent. The effect of EGDE on CSGA/HKUST-1 and the adsorption of tetracycline (TC) was investigated: the composite aerogel (CSGA) was produced by the ring-opening reaction of the epoxy group of EGDE in alkaline solution. The chemical structure of CSGA/HKUST-1 composite aerogel was characterized by FT-IR, XRD and XPS.49.33 % mass loading of CSGA1/HKUST-1 was achieved and N 2 adsorption and desorption experiment showed the BET specific surface area reached 694.514 m 2 g −1 . SEM observed the CSGA/HKUST-1 composite aerogel pores were filled with a large number of octahedral HKUST-1 crystal particles. CSGA/HKUST-1 composite aerogel has excellent tetracycline adsorption capacity (285.7 mg g −1 ), and the removal efficiency remained at 92.7 % after five cycles of adsorption–desorption. The pseudo-second-order kinetic model and Langmuir model adsorption mechanism was successfully concluded. This study can provide ideas for in situ synthesis of MOFs on 3D composite aerogel to prepare adsorption materials, improve the mass loading rate of MOFs and prevent MOFs from falling off, etc., and enrich the application of MOFs materials in the treatment of antibiotic pollutants.
研究领域:
材料科学
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环境科学
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生物学
✓ 已验证
DOI
高影响因子
RSC Advances
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2017
·Vol. 7
·期 15
·9316-9320
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IF 3.108
Li-Long Jiang,Xiangzhou Zeng,Mengkai Li,Man-Qing Wang,Tong-Yu Su,Xiao-Chun Tian,Jing Tang
We synthesized a HKUST-1 metal–organic framework (MOF) on indium tin oxide (ITO) using an electrodeposited Cu film. The electrodeposited Cu/ITO was used as a source of Cu ions, which were linked with benzene-1,3,5-tricarboxylic acid on the ITO surface to form HKUST-1. Synthesized HKUST-1/ITO was characterized by X-ray diffraction (XRD), Raman spectroscopy and scanning electron microscopy (SEM), which showed that the morphology of the HKUST-1 framework was nearly octahedral. Our results also revealed that the growth of HKUST-1 depended on the potential and synthesis time used. This method can be applied to fabricate ordered patterns of HKUST-1 on ITO substrates, offering a new way to grow MOFs on many other kinds of conductive substrates.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL RESEARCH
·
2021
·
IF 6.498
Junyao Pan,Xueting Bai,Yiyao Li,Binhao Yang,Peiyu Yang,Fei Yu,Jie Ma
As the abuse of antibiotics has led to increasingly serious environmental pollution problems, studies have found that the adsorption method can be used to efficiently and quickly remove residual antibiotics in water with low cost and high efficiency. Metal-organic frameworks and their derived porous carbons have received widespread attention as a new type of adsorption material. In this study, HKUST-1 was synthesized by a hydrothermal method and carbonized to HDC-350 at 350 °C under an oxygen-free atmosphere. Through adsorption experiments, HDC-350 is found to show a superior adsorption effect for tetracycline (TC), with an adsorption capacity that reaches 136.88 mg g −1 . The TC adsorption mechanism was studied through characterization and analysis of HDC-350. The adsorption of TC by HDC-350 mainly relies on electrostatic attraction, hydrogen bonding, metal-organic complexation, and intermolecular interactions. This study shows that HKUST-1-derived porous carbon can be used to improve the water stability of HKUST-1, and, at the same time, can effectively adsorb TC in solution, which provides good conditions for practical research applications in the future.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2020
·Vol. 11
·期 1
·192-197
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IF 3.119
Qiaoe Wang,Meiling Lian,Xiaowen Zhu,Xu Chen
The copper-based MOF, HKUST-1 has been applied for humidity sensing owing to hydrophilic ligands and open metal sites which are suitable for sensitively detecting moisture. However, most of the research on the sensor HKUST-1 focuses on the role of the central metal. There are few reports on the morphology–activity relationship of HKUST-1. In this work, we synthesized two kinds of HKUST-1 including octahedral structures and ultrathin nanosheets, and systematically studied the performance of moisture sensing. Compared to HKUST-1 octahedra, HKUST-1 nanosheets showed lower and wider detectable humidity range, achieving a fast response. Starting from the exposed hydrophilic functional groups of HKUST-1 nanosheets, we have revealed that hydrophilic ligands play an important role in improving the adsorption capacity during the adsorption process. In addition, ultra-thin HKUST-1 nanosheets act as an excellent mass transfer medium, accelerating proton transfer and water molecule movement. To further improve the performance of the HKUST-1 humidity sensor, black phosphorus quantum dots (BPQDs) with a high surface reactivity were used to build a composite sensing platform. The excellent proton transfer capability of BPQDs leads to one order of magnitude improvement in the sensitivity of the BPQDs/HKUST-1 systems compared to HKUST-1 only.
研究领域:
材料科学
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化学工程
·
传感器技术
✓ 已验证
DOI
高影响因子
FUEL
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2015
·
IF 3.52
Fuping Tian,Zhikai Fu,Huan Zhang,Jianjun Zhang,Yongying Chen,Cuiying Jia
Adsorption desulfurization is one of the most promising ways to reduce the sulfur content of gasoline at deeper level. In this work, thiophene (TP) adsorption capacity in cyclohexane onto [Cu 3 (BTC) 2 (H 2 O) 3 ] (HKUST-1) was measured by batch method, and the effect of cyclohexene and toluene on sulfur capacity was investigated. Adsorption isotherms of TP, cyclohexene, and toluene in cyclohexane onto HKUST-1 were conducted at 298.15–313.15 K to explicate the different extent of influence by cyclohexene or toluene addition. The results showed that, compared with cyclohexene, the addition of toluene in model gasoline led to a moderate decline in sulfur capacity of HKUST-1. The isotherm data of TP adsorption were well-correlated using Langmuir equation, while those of cyclohexene or toluene adsorption fitted Freundlich model, indicating different adsorption mechanisms between TP and competitors. The adsorption capacities followed the order of toluene < cyclohexene ≪TP at the same equilibrium concentrations, implying the order of the adsorption affinities, which is in good agreement with the different extent of influence by cyclohexene and toluene. The excellent regeneration performance of HKUST-1 in TP adsorption benefits from the physical adsorption mechanism, which was hinted by the enthalpy of TP adsorption (−37.31 ± 2.04 kJ mol −1 ) and no detection of new sulfur species.
研究领域:
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2019
·
IF 3.372
Huan Xia,Zhixian Li,Xue Zhong,Binghui Li,Yunpeng Jiang,Yanbin Jiang
The combination of enzymatic and chemical reactions to achieve co-operative chemo-enzymatic processes has presented many challenges for decades. In this work, alcohol dehydrogenase (ADH) was encapsulated into metal-organic framework HKUST-1 crystals through an in situ approach to construct a synergistic chemo- and bio-catalysis system, where ADH was for the conversion of benzyl alcohol to benzaldehyde, and HKUST-1 was in charge for the regeneration of β-nicotinamide adenine dinucleotide (NAD + , the oxidized cofactor). It was found that HKUST-1 was a versatile catalyst for efficient oxidation of NADH in different buffers. The Michaelis-Menten kinetic parameters of immobilized ADH exhibited an increased K M (approximately 1.3-fold) and a decreased V max (approximately 4.7-fold) compared to free ADH. Due to the protection of HKUST-1, the immobilized enzyme showed a better resistance against urea and organic solvents compared with free enzyme, and still maintained 93% of its original activity after 6 cycles. The immobilized enzyme was successfully applied to the enzymatic transformation of benzyl alcohol to benzaldehyde in aqueous media at room temperature. Owing to the oxidized cofactor regeneration by HKUST-1, ADH@HKUST-1 composites achieved a benzaldehyde yield of 28.5%, which was approximately 4.3-fold higher than that of the individual bio-catalysis. This concept of combining chemo- and bio-catalysis may provide a novel and versatile technique for applications in biochemical catalysis, biosensors and drug delivery.
研究领域:
生物化学
·
催化科学
✓ 已验证
产品关联
DOI
高影响因子
Nano Life
·
2015
·
IF 0
Qiong Yi,Ling Li,Lu Fan,Keke Sun,Lebao Mao,Keke Liang,Li Liu
The adsorption of three kinds of azo dyes from aqueous solution on HKUST-1/graphene oxide (GO) composite was studied in view of the removal efficiency, adsorption isotherm, and regenerate of the sorbent. HKUST-1/GO was found to be with higher dyes removal efficiency than HKUST-1. All the adsorption isotherms of azo dyes on HKUST-1/GO composite followed Freundlich isotherm. The adsorbed azo dyes on HKUST-1/GO could be eluted by acetone, so HKUST-1/GO can also be used for enrichment of azo dyes as adsorbent.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
You Wu,Yuqi Li,Huan Li,Hai Guo,Qi Yang,Xiaoming Li
Cu 2 O is an attractive material for the architectural design of integrated nanomaterials in photocatalysis. Herein, a contrastive study was carried out to explore the influence of morphology/exposed Cu 2 O facets on the template growth process and the difference of fabricated composites in photocatalysis performance. A series of Cu 2 O@HKUST-1 with core–shell structure was developed via a self-confinement strategy, in which Cu 2 O nanocrystals with various shapes (cube, truncated octahedron and octahedron) act as self-confinement template to grow Cu-based metal–organic frameworks (HKUST-1) shell. It was revealed that the growth of HKUST-1 on Cu 2 O crystal depended on the original Cu 2 O crystal. The exposure of (1 1 1) facet in Cu 2 O was more favorable to the growth of HKUST-1 than (1 0 0) crystal plane. Optical and photoelectrochemical characterizations revealed that the cubic Cu 2 O@HKUST-1 exhibited the outstanding light response and most efficient interfacial charge transfer and separation among three types of composites. As a result, the degradation rates of tetracycline hydrochloride (TC-HCl) by cubic Cu 2 O@HKUST-1 under the visible light irradiation was 95.35% within 60 min, which was much higher than truncated octahedral Cu 2 O@HKUST-1 (78.81%) and octahedral Cu 2 O@HKUST-1 (66.58%). Mechanism explorations including radical capture experiments, electron paramagnetic resonance and band structure analysis showed that type II heterojunction was formed in cubic Cu 2 O@HKUST-1 and truncated octahedral Cu 2 O@HKUST-1, which was conducive to the separation and transfer of photo-generated carriers. However, type I heterojunction existed in octahedral Cu 2 O@HKUST-1 lead to the recombination of photocarriers. These findings revealed the interface-dependent photocatalytic performance in Cu 2 O@HKUST-1 and provided useful guidance for controllable construction of photocatalysts with heterojunction structure.
研究领域:
材料科学
·
环境科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
FOOD HYDROCOLLOIDS
·
2022
·
IF 11.504
Linyu Nian,Mengjun Wang,Yan Zeng,Jiang Jiang,Shujie Cheng,Chongjiang Cao
Ethylene-induced quality deterioration of postharvest fruits aggravates food wastage worldwide, therefore, the development of effective approaches for reducing ethylene concentration of packaged fruits is of paramount importance in extending shelf life and minimizing food spoilage . In this work, a modified HKUST-1 (i.e., HKUST-1-P) was added to a chitosan quaternary ammonium salt (CQAS)-gelatin matrix to prepare a food packaging film (i.e., HPCGF) with ethylene adsorption property and improved water stability. Molecular simulation revealed that the ethylene preferentially bonds to the C and O sites of HKUST-1, followed by the H and Cu sites to achieve adsorption. The physical adsorption performance of HKUST-1 and HKUST-1-P was 89.91 and 89.05 cm 3 /g STP, respectively. Moreover, HPCGF showed improved physicochemical (e.g., thermal stability, mechanical, and gas barriers) properties that are beneficial for food packaging. As a validation experiment, the effectiveness of HPCGF for preserving a climacteric fruit (banana) was demonstrated by absorpting the ethylene, maintaining the color and hardness, delaying lipid peroxidation , and prolonging shelf life of bananas. This study will aid in the development of novel packaging materials with ethylene adsorption properties for preserving perishable foods, helping reduce food waste.
研究领域:
食品科学
·
材料科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）