INORGANIC CHEMISTRY
·
2023
·
IF 4.6
Enming Ping,Xiaoxiao Chen,Yunshan Zhou,Lijuan Zhang,Lingyun Kong,Nan Chen
In this work, CAU-10-H@γ-AlOOH is prepared, and then UTSA-16 is loaded on CAU-10-H@γ-AlOOH to obtain UTSA-16@CAU-10-H@γ-AlOOH. Using the as-prepared composites as stationary materials by cryogenic gas chromatography at 77 K, while CAU-10-H@γ-AlOOH achieves the complete separation of ortho-H2 (o-H2) and D2 with a resolution R of 1.66 and a separation time t of 9.52 min, UTSA-16@CAU-10-H@γ-AlOOH achieves higher efficiency separation of hydrogen isotopes in a shorter separation time (4.56 min) with R = 1.7. Molecular simulation results show that CAU-10-H has both chemical affinity quantum sieving and kinetic sieving effects for H2/D2 at 77 K, and UTSA-16 can only exert the kinetic sieving effect. UTSA-16’s load on CAU-10-H@γ-AlOOH weakens the adsorption of hydrogen isotopes, and the presence of Co2+ in UTSA-16 promotes the conversion of para-H2 to ortho-H2. In gas chromatography, H2 was preferentially desorbed from the system due to strong D2 adsorption caused by the chemical affinity quantum sieving effect and faster H2 diffusion caused by the kinetic sieving effect. These additive effects achieved efficient hydrogen isotope separation at 77 K.
研究领域:
化学
·
材料科学
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DOI
PubMed
高影响因子
MOLECULES
·
2024
·Vol. 29
·期 9
·2121
·
IF 4.2
Ting Liu,Xinle Li,Hao Wang,Mingyang Li,Hua Yang,Yunhui Liao,Wufei Tang,Yong Li,Fang Liu
Organic dyes are widely used in many important areas, but they also bring many issues for water pollution. To address the above issues, a reconstructed kaolinite hybrid compound (γ-AlOOH@A-Kaol) was obtained from raw kaolinite (Kaol) in this work. The product was then characterized by X-ray diffraction (XRD), Fourier-transform infrared (ATR-FTIR), Brunauer-Emmett-Teller (BET), and scanning electron microscopy (SEM), and the absorption properties of γ-AlOOH@A-Kaol for congo red were further studied. The results demonstrated that flower-like γ-AlOOH with nanolamellae were uniformly loaded on the surface of acid-treated Kaol with a porous structure (A-Kaol). In addition, the surface area (36.5 m2/g), pore volume (0.146 cm3/g), and pore size (13.0 nm) of γ-AlOOH@A-Kaol were different from those of A-Kaol (127.4 m2/g, 0.127 cm3/g, and 4.28 nm, respectively) and γ-AlOOH (34.1 m2/g, 0.315 cm3/g, and 21.5 nm, respectively). The unique structure could significantly enhance the sorption capacity for congo red, which could exceed 1000 mg/g. The reasons may be ascribed to the abundant groups of -OH, large specific surface area, and porous structure of γ-AlOOH@A-Kaol. This work provides an efficient route for comprehensive utilization and production of Kaol-based compound materials that could be used in the field of environmental conservation.
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Siyi Li,Pinyi Wang,Jianyun Hu,Guangcan Yang,Youjun Lu,Zhenxia Yuan,Xiao Zhang,Sen Liang
γ-AlOOH nanopowder synthesized using hydrothermal-assisted freeze-drying was employed as a precursor, with AlF₃ as a sintering aid, to explore the preparation of α-Al₂O₃ with a high specific surface area at elevated temperatures. The γ-AlOOH nanopowder produced in this study exhibited superior dispersion, achieving a specific surface area of 198.06 m 2 /g and a zeta potential of 45.8 mV. At a calcination temperature of 1200 °C, the resulting α-Al₂O₃, synthesized from γ-AlOOH and AlF₃, maintained a specific surface area of 27.72 m 2 /g, significantly higher than the typical values reported in the literature (generally below 10 m 2 /g). The α-phase purity exceeded 99 %, and the [AlO₆] proportion was 95.07 %. Furthermore, at a calcination temperature of 1150 °C, the specific surface area of the α-Al₂O₃ reached 50.48 m 2 /g. Using this α-Al₂O₃ as a carrier, a composite TiO₂ catalyst was prepared via a sol-gel and hydrothermal method. This catalyst demonstrated a photocatalytic degradation rate of over 98 % for rhodamine B (10 mg/L) within 30 min of irradiation, under the illumination of a 300 W mercury lamp in proximity to the light source.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
ENERGY & FUELS
·
2021
·
IF 3.605
Jie Yuan,Dexin Liu,Wenjian Huang,Jiankang Li,Hongtao Tang,Haidong Jia,Jianan Wang,Lin Song,Pan Huang,Han Jia
The addition of nanoparticles (NPs) to polymer solutions can effectively improve the rheological and thermal properties of the polymer solution. However, the interaction between NPs and cellulose, a potential alternative for polymers applied in enhanced oil recovery (EOR), has been scarcely reported. In this work, the effects of three typical NPs (AlOOH, SiO2, and ZnO NPs) on the rheological properties, emulsifying ability, and resistance to harsh conditions of carboxylic cellulose nanofiber (CCNF) solutions were investigated thoroughly. The results indicate that only AlOOH NPs exert a positive impact on the CCNF’s rheological properties, which should be ascribed to the delicate electrostatic attraction between the CCNF and AlOOH NPs. The intensified network of the CCNF/AlOOH system also results in a superior emulsifying performance and temperature and salt tolerance than other mixed CCNF/NPs systems. In the core flooding test, the CCNF/AlOOH system outperforms the individual CCNF system and the conventional partially hydrolyzed polyacrylamide, reflecting the potential of incorporating AlOOH NPs in the CCNF to promote the CCNF’s practical application in EOR.
研究领域:
材料科学
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石油工程
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DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2017
·
IF 6.065
Zhaoli Yan,Liangjie Fu,Huaming Yang,Jing Ouyang
Hierarchical porous SiO 2 -AlOOH composite nanosheets (HPSA) with a three-dimensional (3D) structure were prepared from two-dimensional (2D) layered mineral kaolinite (A1 2 Si 2 O 5 (OH) 4 ) via a template-free structural reorganization method. The obtained material was subjected to homogeneous and effective amino-functionalization by grafting it with (3-aminopropyl) triethoxysilane. Owing to the enhanced 3D hierarchical meso-macroporous structure containing highly dispersed protonated amino groups ( NH 3 + ), the as-prepared amino-functionalized HPSA (NH 2 -HPSA) showed unique adsorption performance towards the congo red anionic dye. It provides feasibilities to fabricate other functional hierarchical porous materials from clay minerals, which can offer potential applications in adsorption, separation, catalysis and other environmental remediation fields.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
PubMed
高影响因子
APPLIED CATALYSIS A-GENERAL
·
2026
·
IF 4.8
Shiyu Yang,Wenqi Qin,Yanji Zhang,Jun Chai,Ronghuan Wan,Hong Lei,Yi Wei
The Pt/γ-AlOOH-IP was prepared using γ-AlOOH support by impregnation method. • The strong MSI and electron-rich Pt sites are fabricated in Pt/γ-AlOOH-IP. • Pt/γ-AlOOH-IP exhibits excellent catalytic performance in the hydrosilylation. • Electron-rich Pt sites promote the TES adsorption and Si–H bond cleavage. Hydrosilylation is a highly important method for the preparation of organosilicon compounds, in which homogeneous Pt catalysts exist poor recyclability and high production costs. Here, we prepared supported Pt-based catalyst (Pt/γ-AlOOH-IP) using γ-AlOOH support by impregnation (IP) method, in which strong metal-support interactions (MSI) and electron-rich Pt sites were fabricated. Catalytic measurements show that Pt/γ-AlOOH-IP has the best catalytic activity in the conversion of 1-octene and triethoxysilane (TES)via hydrosilylation to n-octyltriethoxysilane (OTES), the yield of OTES is 93.6% with 94.3% selectivity at 80 ℃, 2.5 h, m (Pt) /m (1-octene) = 7.5 × 10 −5 and n (TES) /n (1-octene) = 1.33, which are commensurate with homogeneous Karstedt’s catalyst. The significant catalytic performance of Pt/γ-AlOOH-IP originates from more electron transfer between Pt and γ-AlOOH. Electron-rich Pt sites promote TES chemisorption and Si–H bond dissociation, and improve catalytic activity, which are corroborated by the DFT calculations. This finding enhances the insight of MSI and offers an easy method to prepare efficient heterogeneous catalysts for industrial hydrosilylation reactions. Download: Download high-res image (166KB) Download: Download full-size image
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Deping Xia,Yonggang Wang,Hui Liu,Hualin Lin,Sheng Han
The MoS 2 /AlOOH nanocomposites were prepared through a facile one-pot hydrothermal method and subsequently employed as lubricating oil additives to improve the tribological properties of PAO4 base oil. The structure, composition, morphology, tribological properties, and lubrication mechanism of the MoS 2 /AlOOH nanocomposites have been investigated. The results demonstrated that the in-situ assembly of MoS 2 on the surface of AlOOH change their microstructure, resulting in enhanced dispersion and a reduction in friction and wear. At 0.5 wt% concentrations of MoS 2 /AlOOH nanocomposites, the average COF, WSD, and wear volume were decreased by 50.47 %, 42.34 %, and 86.57 % compared to base oil, respectively. Moreover, the tribological behaviors of the PAO4 containing MoS 2 /AlOOH nanocomposites under various conditions were explored as well. Furthermore, based on the analysis of micromorphology and composition of wear surfaces, a synergistic lubrication mechanism for MoS 2 /AlOOH nanocomposites has been proposed, which involves the formation of a tribochemical film composed of Fe 2 O 3 , Fe 3 O 4 , MoS 2 , and Al 2 O 3 and demonstrates remarkable capabilities in reducing friction and wear. This research might provide new insight into enhancing the tribological properties of MoS 2 -based additives through the composite method and promote the application of MoS 2 /AlOOH nanocomposites as additives.
研究领域:
材料科学
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机械工程
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产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2026
·
IF 2.6
Xianghai Li,Xiaxia Yang,Shiyu Yan,Xiangyue Liu,Gang Yang
In recent years, the synthesis of inorganic materials and their morphology–property relationships have emerged as prominent research topics in the field of materials chemistry. This study employed a hydrothermal method to synthesize γ-AlOOH nanorods and nanosheets, which were subsequently coated onto Celgard 2325 separators. The effects of different morphologies of γ-AlOOH coatings on separator performance were analyzed comparatively. Compared to the Celgard 2325 separator, the γ-AlOOH-coated separator exhibited enhanced properties, with the Celgard 2325-nanorod separator demonstrating the best results, achieving an electrolyte uptake of 190.8%, a thermal shrinkage rate of only 1.7% at 160 °C, and an ionic conductivity of 0.75 mS cm−1. The assembled battery maintained a discharge specific capacity of 107.8 mA h g−1 at a rate of 5C, and after 300 cycles at 1C, the capacity retention was 79.6%, significantly outperforming the Celgard 2325 separator (66.1%) and the Celgard 2325-nanosheet separator (71.4%). These results elucidate the mechanism by which the γ-AlOOH morphology regulates the structural and electrochemical properties of composite separators, offering valuable insight for the design of next-generation, high-performance lithium-ion battery separators.
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高影响因子
Journal of Materials Chemistry C
·
2019
·Vol. 7
·期 46
·14717-14724
·
IF 6.641
Jiaming Wu,Shuxian Wang,Shuxin Liu,Shuwei Ma,Guojian Jing,Yueling Hu,Meng Wang,Zhengmao Ye,Xin Cheng
Recently, carbon dots (CDs) have received much attention in light-emitting applications owing to their low cost, non-toxicity and favorable fluorescence. In view of the aggregation-induced quenching effect and poor thermal stability of CDs, the development of a simple and high-efficiency strategy for solving these tough issues and improving the practicality of CDs is urgently necessary. Herein, a CD doped boehmite composite (CDs@AlOOH) is directly achieved through a facile one-step decomposition route. The uniform dispersion of CDs in AlOOH effectively alleviates the adverse self-quenching effect of CDs and gives rise to a tunable fluorescence feature of the composite. The N doping and energy transfer between CDs and AlOOH are beneficial for the photoluminescence (PL) enhancement of CDs@AlOOH. Meanwhile, CDs@AlOOH has outstanding long-term thermal stability, and maintains 98%, 90% and 80% of the initial PL performance after air heating treatment at 150 °C for 100 h, 250 h and 500 h, respectively. Moreover, the white lighting application is also demonstrated by combining CDs@AlOOH samples and commercial UV/blue light-emitting diodes (LEDs) without other phosphors. What is discussed in this study might offer some inspiration for dealing with the bottleneck problems of CDs in practical lighting and display fields.
研究领域:
材料科学
·
纳米技术
·
光学材料
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光子学
·
固态照明
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DOI
高影响因子
RSC Advances
·
2022
·Vol. 12
·期 36
·23118-23128
·
IF 4.036
Luxin Zhang,Xu Xing,Ruijun Sun,Meng Hu
Selective catalytic conversion of carbohydrates to 5-ethoxymethylfurfural (EMF) is a critical approach to the biorefinery. In this work, solid acid catalysts of γ-AlOOH and CeO2@B2O3 were used to convert carbohydrates to EMF in a one-pot process, performed in an ethanol/DMSO solvent system. The synergistic effect of γ-AlOOH and CeO2@B2O3 was studied. Furthermore, the morpho-structural properties of the catalysts were characterized, and the effects of reaction time, reaction temperature, catalyst load, and the amount of cosolvent on the conversion of glucose to EMF were examined and optimized. Under the reaction conditions of 170 °C for 20 h, glucose, sucrose, cellobiose, inulin and starch were used as raw materials, and the EMF yield range was 9.2–27.7%. The results showed that the synergistic effect of γ-AlOOH and CeO2@B2O3 further causes the combination of multiple acid sites with different types and strength distributions. Particularly, the collaboration between weak, medium-strong, and strong acid, as well as between Lewis and Brønsted acidity, is of great significance for EMF generation. The reusability experiments showed that the combined catalytic system was easily separated and maintained catalytic activity for five successive reactions without further intermediate regeneration steps. This work provides a promising route for the catalytic conversion of biomass-derived carbohydrates into EMF.
研究领域:
化学工程
·
催化
·
可再生能源
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生物化学
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产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2020
·
IF 6.182
Linfeng Bai,Kezhu Xu,Wanquan Jiang,Min Sang,Qunling Fang,Shouhu Xuan,Xinglong Gong
Advanced nanocatalysts integrating with high activity and recyclability is one of the most important issues in heterogeneous catalysis. Magnetic hierarchical nanostructures comprising noble metal nanocrystals confined within a protecting penetrable shell will be favored as an efficient candidate toward robust catalytic reactions. This work reports a proof-of-concept magnetic separable nanocatalyst with the polydopamine (PDA)-confined-Au-nanocrystals assembled on the hierarchical surface of Fe 3 O 4 @SiO 2 @γ-AlOOH microflower (Fe 3 O 4 @SiO 2 @γ-AlOOH@Au/PDA). Because of the high surface area of γ-AlOOH hierarchical nanoarchitectures, the loading capacity and dispersity of Au nanocrystals are both improved. These magnetic microflowers present excellent catalytic efficiency and cycling performance in reduction of 4-nitrophenol to 4-aminophenol, which can be ascribed to the superior structure of catalyst. After 9 cycles, the activity of Fe 3 O 4 @SiO 2 @γ-AlOOH@Au/PDA maintains as high as 97.3% due to the protection of PDA shell. In comparison to the spherical Fe 3 O 4 @SiO 2 @Au/PDA, the as-prepared Fe 3 O 4 @SiO 2 @γ-AlOOH@Au/PDA microflowers exhibit quicker catalytic dynamic. The concept of hierarchical nanostructure and penetrable PDA protective layer will be instructive for fabricating high-performance nanocatalysts.
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高影响因子
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
·
2025
·Vol. 40
·期 6
·1739-1749
·
IF 1.1
Zeng Fanbiao,Liu Zhanwei,Yan Hengwei,Li Lan,Li Mengnan,Hu Mingyi
To efficiently address the current high cost associated with preparing pseudo-boehmite from organic aluminum, a low-cost alternative, AlCl 3 , is employed as the raw material. The sol-gel method is utilized, and H 2 O 2 is incorporated for the modification of pseudo-boehmite. The modification mechanism is thoroughly investigated through the use of X-ray powder diffractometer, scanning electron microscope, and BET data analysis, as well as molecular dynamics simulations. Under specific conditions (temperature at 80 °C, pH=7, and H 2 O 2 volume ratios of 0.5:1, 1:1, and 2:1), mesoporous pseudo-boehmite is synthesized with a specific surface area of 227 m 2 /g, a pore volume of 0.281 cm 3 /g, a pore size of 6.78 nm, and a peptizing index of 99.47%. A novel and innovative methodology for the cost-effective production of high-performance alumina is offered through the approach.
研究领域:
材料科学
·
化学工程
·
纳米技术
·
计算化学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）