JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
·
2016
·Vol. 16
·期 1
·242-245
·
IF 1.338
Sun Ke Ke,Li Ling,He Yu Qi,Fan Lu,Wu Ya Qi,Liu Li
A hybrid HKUST-1/GO composite was synthesized and its drug loading and drug release abilities were investigated. The adsorption of IBU (ibuprofen) onto the surface of HKUST-1/GO and HKUST-1 composites was compared, and it was found that the addition of GO enhanced both IBU loading and
stability. The addition of GO also enhanced the specific surface area. Drug release experiments on IBU loaded HKUST-1 and HKUST-1/GO were conducted, and it was found that drug release of HKUST-1/GO was slower, which can be explained by the hydrogen bonding between GO and IBU. It can be concluded
that the addition of GO not only enhances drug loading, but can also achieve a more desirable slow-release of the drug.
研究领域:
材料科学
·
药剂学
·
纳米技术
✓ 已验证
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Zhu Liu,Shoulu Yang,Zhongwei Wang,Ning Ji,Xingong Li,Yingfeng Zuo
The effect of moisture on the volatile organic compound (VOC) adsorption on biomass-derived metal–organic framework composites is significant in practical applications. In this study, wood-based metal organic frameworks (MOF199-W) and hydrophobic MOF199-W (HMOF199-W) were developed using HKUST-1 (MOF199) and long alkyl chains to investigate the adsorption performance of toluene and enhance the selectivity of adsorption under high humidity conditions. The results demonstrated that HKUST-1 could be anchored onto the surface of wood vessels and fibers through coordination with Cu 2+ , resulting in an improved surface area in comparison to natural wood. The toluene adsorption capacity of MOF199-W with a 20 % loading was comparable to that of an equivalent amount of MOF199, with adsorption capacities of 323.5 mg/g and 369.9 mg/g, respectively. Further, the Yoon-Nelson model was found to adequately describe the dynamic adsorption process. Following the introduction of long alkyl chains, MOF199 and MOF199-W were endowed with strong hydrophobic character (water contact angle of 107.0 ◦ , 104.0 ◦ , and water uptake of 30.5 mL/g, 55.3 mL/g). With the increase in humidity, the adsorption performance of MOF199 and MOF199-W for toluene sharply decreased, but HMOF199 and HMOF199-W still maintained the adsorption capacities at 304.7 mg/g and 226.7 mg/g, even under 80 % RH conditions. Therefore, HMOF199-W has shown great potential in wooden building materials with the ability for toluene capture under humid conditions.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
AIP Advances
·
2020
·Vol. 10
·期 12
·
IF 1.337
Xu Feng,Lv Daofei,Xu Weicheng,Yang Xixian,Sun Huili,Yuan Wenbin,Yan Jian,Chen Xin
Volatile organic compounds (VOCs) have been recognized as one of the major environmental hazards in the air. Metal organic frameworks (MOFs) and their associated materials have offered an excellent strategy for the adsorption removal of VOCs. In this work, we develop a facile and rapid synthesis method of HKUST-1, a typical and ideal Cu-based MOF, for VOC adsorption by using hydrotalcite as the intermediate for efficient crystallization at room temperature. The results show that HKUST-1 can be successfully synthesized within 10 s at room temperature. The as-synthesized HKUST-1 has a Brunauer-Emmett-Teller surface area of 2170.7 m 2 g −1 and a total pore volume of 0.977 cm 3 g −1 , which are among the highest reported values for such material. When tested for its benzene adsorption performance, the material can achieve a saturated adsorption capacity of 7.3 mmol g −1 at 35 °C. Based on the temperature-programmed desorption result, it is shown that the activation energy for the benzene desorption is 68.23 kJ mol −1 . The material can demonstrate a relatively constant saturated adsorption capacity after several adsorption/desorption cycles, which indicates good regenerative performance.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Qiang Ma,Fan Li,Xianglong Zhang,Bowen Yang,Yingjie Zhang,Qingyuan Wang,Qihong Wu,Jin Huang,Jiming Hao
With the rapid development of ore refining, coal power plants, and mining, aqueous thallium pollution in natural waters has been reported over the past few decades. However, few thallium control technologies have been put into practice. In this study, a modified MOF adsorbent, MnO 2 @HKUST-1(MOH), was fabricated. Its chemical component shift, thermal stability, and microstructure changes during thallium adsorption were analyzed using TGA, XRD, XPS, and TEM-EDS techniques. The results showed a promising Tl + removal rate of over 90 %, and an adsorption capacity of 178.8 mg/g was obtained at a pH of 5 and a temperature of 293 K. The dynamic behavior of Tl + adsorption on MOH was simulated using power rate law expression (PRL), pseudo-first-order model (PFO), and pseudo-second-order model (PSO), which revealed a superior selection of Tl + among other competing heavy metal ions (Cr 3+ , Fe 3+ , Ca 2+ , Zn 2+ , and Cu 2+ ). The Tl + removal mechanism was further studied, which was mainly forced by surface adsorption/desorption. Based on its efficient Tl + removal rate, high adsorption capacity, promising regeneration property, and economical price, the MOH adsorbent has the potential to be a feasible option for smelting, ore refining, packaging, and testing wastewater treatment.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2015
·Vol. 308
·期 3
·865-875
·
IF 1.034
Zhang Hui,Xue Jinhua,Hu Nan,Sun Jing,Ding Dexin,Wang Yongdong,Li Le
The adsorption of U(VI) from low concentration solution by HKUST-1@H 3 PW 12 O 40 was studied as a function of various experimental parameters including pH, interfering ions, contact time, initial uranium concentration and temperature by batch experiments. Equilibrium data were found to fit with Langmuir isotherm model better than Freundlich isotherm model. The kinetic adsorption was fitted by the pseudo-second-order model well. Thermodynamic data from the adsorption experiments indicate that adsorption process is spontaneous and endothermic. HKUST-1@H 3 PW 12 O 40 can selectively adsorb U(VI) from multi-metal ion solutions and the adsorption capacity of HKUST-1@H 3 PW 12 O 40 don’t decrease significantly after three cycles of desorption-reuse. The results show that HKUST-1@H 3 PW 12 O 40 is suitable for removal of U(VI) from low concentration solutions.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2023
·Vol. 13
·期 22
·14980-14990
·
IF 3.9
Xiaoyu Hu,Jinchuan Wang,Shangkun Li,Xuanhao Hu,Rongxing Ye,Linsen Zhou,Peilong Li,Changlun Chen
Extensive research has been devoted to developing metal nanoparticle (NP) doped porous materials with large hydrogen storage capacity and high hydrogen release pressure at ambient temperature. The ultra-sound assisted double-solvent approach (DSA) was applied for sample synthesis. In this study, tiny Pd NPs are confined into the pore space of HKUST-1, affording Pd@HKUST-1-DS with minimizing the aggregation of Pd NPs and subsequently the formation of Pd NPs on the external surface of HKUST-1. The experimental data reveal that the obtained Pd NP doped Pd@HKUST-1-DS possessed an outstanding hydrogen storage capacity of 3.68 wt% (and 1.63 wt%) at 77 K and 0.2 MPa H2 (and 298 K and 18 MPa H2), in comparison with pristine HKUST-1 and impregnated Pd/HKUST-1-IM. It is found that the storage capacity variation is not only ascribed to the different textural properties of materials but is also illustrated by the hydrogen spillover induced by different electron transport from Pd to the pores of MOFs (Pd@HKUST-1-DS > Pd/HKUST-1-IM), based on X-ray photoelectron spectroscopy and temperature desorption spectra. Pd@HKUST-1-DS, featuring high specific surface area, uniform Pd NP dispersion and strong interaction of Pd with hydrogen in the confined pore spaces of the support, displays the high hydrogen storage capacity. This work highlights the influence of spillover caused by Pd electron transport on the hydrogen storage capacity of metal NPs/MOFs, which is governed by both physical and chemical adsorption.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Sijie Yuan,Ying Tu,Ru Yu,Fei Nie
Introducing novel catalysts is essential for developing chemiluminescence (CL) systems that exhibit sustained and robust emission. Traditional Luminol-H2O2 systems typically feature flash-type CL emission. In this study, we discovered that the porous material HKUST-1 can induce a long-lasting and intense CL emission when combined with Luminol-H2O2. This long-term emission signal can be directly detected by the smartphone. By changing the calcination temperature, a series of microporous and hierarchically porous HKUST-1 materials were prepared as catalysts to adjust the kinetic characteristics of the CL signal of Luminol-H2O2 system from flash-type to glow-type. A systematic investigation into the influence of the central metal and ligand, aperture, and particle size of HKUST-1 on the CL kinetic properties revealed that the pore structure has the most pronounced impact on the dynamics of the Luminol-H2O2 CL reaction. Capitalizing on the intense emission of the HKUST-1-catalyzed Luminol-H2O2 system, we established a CL sandwich immunoassay strategy for concanavalin A (ConA), demonstrating good linearity and low detection limit. This research presents a significant endeavor in modulating the dynamics of CL signal emissions.
研究领域:
分析化学
·
生物传感
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2022
·
IF 10.53
Ke Bai,Senqing Fan,Yu Chen,Yilin Wang,Jiaojiao Chen,Zenghui Mai,Jingyun Liu,Lei Deng,Zeyi Xiao
A membrane adsorber with hierarchically porous HKUST-1 (HP-HKUST-1) immobilized in membrane pores has been fabricated by flowing synthesis. The X-ray diffraction (XRD) characteristics indicate that the structural integrity of the HP-HKUST-1 immobilized in the membrane pores can be kept after template agents are removed. Other characteristics prove the effective immobilization of HP-HKUST-1 in membrane pores. As a concept-of-proof, the adsorption for Congo red (CR) and Methylene blue (MB) is carried out to evaluate the adsorption performance of the membrane adsorber. The adsorption capacity for CR with 458 mg g -1 and MB with 241 mg g -1 can be obtained by HP-HKUST-1 powder, which is 2–3 times higher than those by HKUST-1 powder, owing to the mesopores with rich active adsorption sites. When the solution flows through the membrane adsorber, the adsorption rate for these adsorbates in the range of 0.049 g mg -1 h -1 and 0.129 g mg -1 h -1 can be obtained, which is 4–5 times higher than that by HP-HKUST-1 powder, owing to the enhanced mass transfer in the confined space of the membrane pores with micro or nano scale. After going through seven adsorption-desorption experiments, the membrane adsorber with HP-HKUST-1 immobilized shows remarkable repeatability.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
Results in Engineering
·
2023
·
IF 5
Hu Wang,Qing-rong Zheng,Xuan Zhang,Mengbo Wu
Measures beneficial to enhancing the hydro-stability of the HKUST-1 and improving its adsorptive performance for methane are crucial to the further application. In this research, incorporation of graphene oxide (GO) and carbonization were employed to achieve these objectives. Incorporation of the HKUST-1 was solvothermally prepared by mixing the GO with different mass ratios, and carbonization of the HKUST-1 sample was conducted at different temperatures. Structural characterization, structural morphology observation and adsorption equilibrium measurement of methane were then performed on the samples. Analysis of adsorption equilibrium of methane on the composite was finally carried out within temperature-pressure range respectively about 303.15 K–323.15 K and 0–3.6 MPa. It shows that the sample incorporated by 5 wt% GO has the largest increment about 11.7% and 13.3% in specific surface area and specific micropore volume, and the carbonization conducted at a temperature higher than 300 °C had negative effect on the structure stability of the sample. Results also reveal that the mean relative error between the experimental data and those predicted by Toth equation is about 0.54%. It suggests that the temperature for carbonizing should be carefully selected to avoid the collapse of the structure, and the balance measures should be taken to safeguard the benefit from incorporating.
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2023
·Vol. 19
·期 49
·2304644
·
IF 13.3
Ping Lu,Zhaoyang Qi,Jie Chen,Changshen Ye,Ting Qiu
High-efficiency adsorption of aromatic sulfur-containing compounds from liquid hydrocarbon fuels over metal-organic frameworks (MOFs) is challenging because of inert metal sites. A new method, the Ce-enhanced modulation of MOFs’ microenvironment, is proposed to modulate the –COO···Cu(II)– coordination microenvironment of Hong Kong University of Science and Technology (HKUST-1) using Ce(III) as a molecular scalpel for fabricating abundant high-efficiency Cu(I) and Cu-coordination-unsaturated sites and improving the pore structures around adsorptive sites. The optimal CH-250 thus exhibits adsorptive capacities for 20.2, 28.0, and 58.3 mg S g –1 of thiophene, benzo-thiophene, and dibenzothiophene, respectively, which are superior to most reported MOFs, zeolites, and nanoporous carbons. The constructed Cu(I) sites show stronger affinity for dibenzothiophene (−0.86 eV) than the initial Cu(II) (−0.74 eV) for out-of-plane adsorption. Further, they are far stronger in-plane adsorption interactions in DBT/CH-250 (−0.90 eV) than those in DBT/HKUST-1 (−0.37 eV). Thus, molecular engineering for modulating the coordination microenvironment of MOFs shows great potential for adsorption desulfurization.
研究领域:
材料科学
·
能源化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2020
·
IF 1.943
Jiuxiao Dong,Peiying Li,Hongyu Guan,Chunhua Ge,Yufeng Bai,Yuhui Zhao,Xiangdong Zhang
We use photosensitive resin as material, and adopt 3D printing and pyrolysis to prepare silica ceramics. HKUST-1 was grown on the ceramic surface by step-by-step in-situ growth method to obtain the HKUST-1/SiO 2 composite material. The HKUST-1/SiO 2 composite material was characterized by X-ray powder diffraction (XRD), fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), energy dispersive spectrometer (EDS), thermogravimetric analysis (TG). The HKUST-1/SiO 2 composite material not only has the characteristics of HKUST-1 and SiO 2 , but also can be designed into different complex shapes. In addition, the composite can be easy to separate from the product without centrifugation or filtration after the reaction is completed. The application of benzyl alcohol oxidation was an example to the performance of composite catalysts.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Reaction Chemistry & Engineering
·
2024
·Vol. 9
·期 3
·728-739
·
IF 3.4
Tongtong Wu,Weili Gao,Jiehe Zhang,Mingxu Hao,Shiyu Zhang,Haisheng Tao
As a typical antibiotic, tetracycline is ecotoxic and prone to bacterial resistance, producing superbugs and causing a public ecological crisis, thus raising the need to eliminate tetracycline from the aqueous environment. In this work, magnetic catalyst Fe3O4@HKUST-1 was prepared for catalyzing the degradation of tetracycline by persulfate. X-ray diffraction, scanning electron microscopy, and vibrating sample magnetometry were used to characterize the catalyst, and the results show that the catalyst had good crystallinity and magnetic properties. Tetracycline removal in the Fe3O4@HKUST-1/persulfate system reached 84.80%, and the catalyst was easily recovered from the solution due to its good magnetic properties. Mechanism analysis revealed that the non-radical pathway was the main degradation channel in the Fe3O4@HKUST-1/persulfate system, and 1O2 was the main reactive oxygen species generated from Ov on the surface of the Fe3O4@HKUST-1 catalyst. Tetracycline degradation was achieved by hydroxylation, demethylation, decarbonylation, dehydroxylation and the cleavage of C–N bonds. This finding holds significant value in further comprehension of the catalytic activation mechanism of metal–organic frameworks derivatives on persulfate and provides novel ideas for efficient water treatment technology development.
研究领域:
环境科学
·
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）