INORGANIC CHEMISTRY COMMUNICATIONS
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2021
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IF 2.495
Yujing Ou,Junqing Shi,Quanqing Yan,Chunlei Li,Yi Zheng
Molten salt synthesis is an efficient method for preparation of photocatalyst. Enhancing precursor mixing effect is important. In this study, we found ethanol is important for synthsis of face-to-face type Bi 4 Ti 3 O 12 /Bi 2 Ti 2 O 7 composite photocatalyst. The prepared Bi 4 Ti 3 O 12 /Bi 2 Ti 2 O 7 (B3) composite under molar ratio of Bi:Ti of 4:3.6 displays higher photocatalytic activity compared with Bi 4 Ti 3 O 12 (B1) and Bi 2 Ti 2 O 7 (B4). The photocurrent density of B3 is 2 times higher than B1 and 1.6 times higher than B4, and B3 has smallest charge resistance between sample and solution. Combined with XPS, the study found that the higher photocatalytic activity origins from large charge transfer interface and built-in electric field (BIEF) around such interface, rathor than light absorption and dark adsorption.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of the Taiwan Institute of Chemical Engineers
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2016
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IF 2.848
Bin Hui,Guoliang Li,Jian Li,Brian K. Via
A novel nanoplate-like tungsten trioxide was grown on a wood substrate using a facile one-step ethanol-assisted hydrothermal method. The morphology, chemical composition, crystalline structure, optical properties, thermostability, wettability and roughness of the WO 3 -treated woods were investigated. The results showed that the uniform WO 3 nano-plates exhibited an edge length of 1553 nm and a thickness of 102 nm. These structures were observed to be highly crystallized with hexagonal structures. The X-ray photoelectron spectroscopy (XPS) and Raman spectrum (RS) analysis demonstrated that the pure WO 3, without other impurities, could be grown on a wood substrate. The as-obtained product appeared a remarkable blue shift than the pristine wood by UV–vis analysis and had an obvious color response to UV light irradiation at 365 nm. The thermogravimetry (TG) analysis showed that the maximum degradation rate of the WO 3 -treated wood exhibited slower degradation rates when compared to the native wood control. Through the octadecyltrichlorosilane (OTS) treatment, the as-fabricated product exhibited a water contact angle (WCA) of 152°, indicative of its superhydrophobic property, which was ascribed to the low surface energy of OTS and the large surface roughness of the product.
研究领域:
材料科学
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化学
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2023
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IF 7.2
Dongmei Feng,Xuhui Ren,Yun Tong
Ethanol oxidation reaction (EOR) is a promising substituent to the conventional oxygen evolution reaction (OER) for highly active and energy-saving hydrogen production . The rational design of bifunctional electrocatalysts to achieve ethanol-assisted water splitting is important, but still maintains challenge. Herein, we successfully synthesize a tungsten (W) doped cobalt molybdate nanosheet arrays on porous copper foam by one-step hydrothermal method (W–CoMoO 4 /CF). The synthesized W–CoMoO 4 /CF shows the morphology of neatly stacked cobblestone nanosheets with high surface area and improved reaction kinetics, leading to substantial bifunctional catalytic activity for EOR/hydrogen evolution reactions (HER). To reach a current density of 100 mA cm −2 , only an overpotential of 102 mV is demanded when using W–CoMoO 4 /CF as an electrode for HER, while a potential of 1.40 V is required for EOR. Moreover, the ethanol-assisted water electrolyzer is constructed by using W–CoMoO 4 /CF as both anode/cathode, which requires a small total voltage of 1.54 V to achieve 100 mA cm −2 and could run steadily for 12 h, revealing its excellent application prospects. This study provides a promising guidance for the development of high-valence metal modified bimetallic oxides for hydrogen generation .
研究领域:
材料科学
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能源化学
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产品关联
DOI
高影响因子
BIORESOURCE TECHNOLOGY
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2023
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IF 11.4
Lan Yao,Mengzhen Chai,Pingping Cui,Chang Geun Yoo,Jie Yuan,Xianzhi Meng,Haitao Yang
Valorization of lignocellulose has received a lot of attention due to the abundance of lignocellulosics. It was showed that synergistic carbohydrate conversion and delignification could be achieved via ethanol assisted DES (choline chloride/lactic acid) pretreatment. To explore the reaction mechanism of lignin in the DES, milled wood lignin obtained from Broussonetia papyrifera was subjected to pretreatment at critical temperatures. The results suggested that ethanol assistance could contribute the incorporation of ethyl groups and reduce condensation structures of Hibbert’s ketone. Adding ethanol at 150 °C not only decreased formation of condensed G unit (from 7.23% to 0.87%), but also removed J and S’ substructures, thus effectively reducing the adsorption of lignin on cellulase, and promoting the glucose yield after enzymatic hydrolysis.
研究领域:
生物化学
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可再生资源工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF POWER SOURCES
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2021
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IF 9.127
Linlin Wang,Lu Liu,Xianlong Gong,Yi Jiao,Jun Zhang,Jianli Wang,Quan Zhu,Xiangyuan Li
The endothermic hydrocarbon fuel catalytic cracking as an active cooling technology for aircraft engines needs to provide a higher heat sink to absorb more heat and at the same time produce less carbon deposits to ensure the continuous operation of the aircraft. In this paper, Ni nanoparticles embedded into SiO 2 aerogel is achieved by two different method, col-gel (Ni-co) and after impregnation (Ni-after) and firstly introduced to achieve high heat adsorption capability and low coke generation in the fuel cracking process through ethanol-assisted and TiN coating technology . The Fourier transform infrared spectroscopy (FTIR) and contact angle test results show that aerogel catalysts are modified successfully with excellent hydrophobicity and lipophilicity which indicates that aerogel catalysts could be well dispersed in n -decane. According to the SEM and N 2 adsorption-desorption, Ni-after remains similar three-dimensional structure with SiO 2 aerogel and shows better pore structure which result in higher cracking activity (4.04 MJ/kg at 750 °C, 3.5 MPa) than Ni-co. Furthermore, the most efficient coke inhibition in supercritical catalytic cracking of n -decane is achieved by incorporating a little ethanol over TiN coating and high catalytic activity could be maintained within 50 min at 750 °C, 3.5 MPa and the coke generation is decreased by more than 90.0% (9.67–0.42 mg/cm 2 ·g) compared with Ni-after catalytic cracking.
研究领域:
化学工程
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材料科学
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航空工程
✓ 已验证
产品关联
DOI
高影响因子
Desalination and Water Treatment
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2024
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IF 1
Rui Yu,Xing Li,Yanling Yang,Tingting Zhang,Zhiwei Zhou
The adsorption characteristics of dissolved aniline onto powdered activated carbon (PAC) and the subsequent desorption by ultrasound treatment were studied. The results indicated that the adsorption followed the pseudo-second-order model and the Langmuir model. Acidic conditions were not conducive to the adsorption of aniline. The desorption efficiency of saturated PAC radiated by ultrasound reached a maximum of 24.35% with a sonication power of 180 W at a frequency of 40 kHz, and a pH of 3 within 180 min of sonication time. The addition of ethanol produced a synergistic effect with ultrasound, effectively improved the desorption efficiency to 83.88%. Intermediates of aniline that were formed during the ultrasound irradiation were analyzed by gas chromatography-mass spectrometry and this identified azobenzene as the main by-product. Analysis of the specific surface area, pore structure, and FTIR spectra of PAC indicated that more cavitation occurred in ethanol than in water, and high-speed microjets and high-pressure microstreams enlarged the mesopore of PAC. In general, the physical attack of microjets and microstreams played an active role in the desorption of aniline.
研究领域:
环境科学
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水处理技术
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物理化学
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环境污染控制
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吸附与脱附机制
✓ 已验证
DOI
高影响因子
MICROCHEMICAL JOURNAL
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2023
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IF 4.8
Qi Nie,Jingjing Deng,Bing Xie,Tianshu Zhou
In this study, a novel solvent-assisted strategy was developed for the rapid and sensitive detection of kanamycin (KAN) based on glutathione-capped silver-doped gold nanoclusters (AuAg NCs). Ethanol solvent played a key role in disrupting the hydration shell of metal(I)-thiolate complexes in AuAg NCs. KAN, as a specific linker between AuAg NCs through electrostatic interaction and metal-amine coordination, induced the formation of large aggregates and thus triggered prolonged photoluminescence lifetime as well as strong luminescence enhancement by restricting molecular motions in AuAg NCs. The KAN-stimulated turn-on principle allows AuAg NCs to exhibit 4-fold sensitivity in 40% ethanol/water (V/V) mixed solution compared to that in water. The improved aggregation-induced-emission enhancement (AIEE) feature endows the AuAg NCs with selective recognition for KAN and realizes rapid detection in a short response time of 60 s with a low detection limit of 8.6 nM. By integrating AuAg NCs with a Pasteur pipette, a facile sample-to-answer test kit for on-site determination with low cost and high efficiency was constructed, offering potential applications in the timely analysis of contaminants in environmental emergencies.
研究领域:
分析化学
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环境科学
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
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2025
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IF 8.2
Ziwen Sun,Quan Yuan,Liwei Yan,Junyu Lu,Weiyi Ding,Yang Chen,Huawei Zou
Traditional high-density thermal protection systems (TPSs) limit the maneuverability of hypersonic vehicles while lacking stealth capabilities. In this work, we propose a strategy to integrate electromagnetic wave absorption and thermal protection in an aerogel composite by introducing a PEDOT:PSS heterointerface via ethanol-assisted gel impregnation. Ethanol also functions as secondary doping, enabling tuning of the electromagnetic parameters of the aerogel by adjusting the doping level. This can achieve a balance between microwave attenuation and impedance matching in the aerogel, leading to excellent broadband microwave absorption with a minimum reflection loss of −37 dB at 30 mm thickness and an effective bandwidth of 13.3 GHz. During ablation, the PEDOT:PSS heterointerface can also induce a thermal blocking effect that can suppress the melting of high-silica fiber, helping maintain the three-dimensional skeletal support of fiber felt, thereby enhancing the aerogel composite’s resistance to oxyacetylene flame attack. Therefore, the aerogel composite exhibits a low linear ablation rate of 0.03 mm/s under 1 MW/m2 and, after 96 s of exposure to 1800 °C flame, maintains a backside temperature of only 61 °C. This work provides a feasible strategy for achieving integrated electromagnetic wave absorption and thermal protection in aerogel composites, which has potential for next-generation lightweight TPS applications.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Na Tian,Bin Wu,Wen-Hai Zhang,Cheng-Gang Jin,Ming-Jie Yin,Quan-Fu An
Zwitterionic nanofiltration membranes, with high rejection to organic molecules while low rejection to monovalent salts, are promising for antibiotic desalination. However, due to the heterogeneous issue of interfacial polymerization, the residual amine groups result in polymer chain aggregation via hydrogen bonds, blocking the mass transfer of water and monovalent salts. Herein, EtOH-assisted Michael-addition/Schiff-base reaction strategy was proposed to solve the issue. NaOH was initially utilized to provisionally interrupt the hydrogen bonds between polymer chains. Meanwhile, with the assistance of EtOH, gallic acid diffused into the membrane and reacted with the amine groups on the polymer chains to form covalent bonds, which thoroughly destroyed the stacking of polymer chains. As a consequence, water permeance and antibiotic desalination efficiency of the membrane are improved. For example, the pure water permeance reaches 8.9 L m −2 h −1 bar −1 , 1.7-fold enhancement compared with the pristine membrane. The membrane is applied for antibiotic desalination, offering long-term running stability, antifouling ability, as well as high efficiency in concentrated antibiotics.
研究领域:
膜科学
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环境工程
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化学工程
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
FUEL
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2021
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IF 6.609
Xuefei An,Kun Zhao,Weiping Zhang,Jiahan Yang,Yujie Liao,Lemeng Wang,Dong Fu
In this work, the ultra-uniform amidated nitrogen (N)-doped carbon sphere (ANG-Cs) adsorbent with different pore sizes and modified by kinds of functional groups was developed for efficient carbon dioxide (CO 2 ) adsorption, simultaneously obtaining the excellent selectivity of CO 2 /N 2 from the simulated ultra-low emission flue gas. We fabricated the uniformly monodispersed glucose-based carbon microspheres via a creative ethanol-assisted hydrothermal method, and also systematically explored and discussed the relationship between porous structures functional alkaline-containing N-groups and CO 2 adsorption capacity. Impressively, the pore size distribution arranged from micro- to mesoporous region along with large surface area of 1217 m 2 /g, that is benefit for the adsorption of small acid gas like CO 2 . Moreover, the adsorption capacity of the optimized ANG-Cs reached 4.89 mmol/g under 298 K and 1 bar, and the predictable adsorption selectivity of pure CO 2 /N 2 was as high as 43 in the simulated ultra-low emission flue gas. More importantly, when compared with some advanced MOF-based adsorbents, ANG-Cs not only owns similar CO 2 adsorption performance, but also keeps higher water resistance, chemical stability and lower cost. Therefore, this promising ANG-Cs with green synthesis for the controllable CO 2 adsorption and separation pushes the progress in industry application of ultra-low emission gas.
研究领域:
材料科学
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环境工程
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化学工程
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碳捕集与封存
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
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2022
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IF 9.224
Hao Zhou,Zhiqiang Zou,Lingmei Dai,Dehua Liu,Wei Du
Enzyme immobilization in hierarchical macro–microporous metal–organic frameworks (MOFs) is greatly desirable but challenging due to the poor stability of MOFs in a practical biocatalysis process. Herein, we prepared a series of single-crystalline ordered macro–microporous zeolitic imidazolate framework-8 (SOM-ZIF-8) with different macropore sizes of 180, 270, and 360 nm for lipase immobilization and investigated their performance in a practical biodiesel production process. Under an ethanol-assisted infiltration strategy, the potential of SOM-ZIF-8 for enzyme immobilization was unleashed from the nonwettability arising from its exceptional surface hydrophobicity, with a significant increase by 123.8% in the loading capacity. However, a fatty acid-induced complete decomposition of ZIF-8 in a nonaqueous system of biodiesel production was observed. To address this challenge, a degradation mechanism coupling the intermolecular autoionization of carboxylic acid was proposed, and a template-assisted pyrolysis approach was adopted to prepare the SOM-ZIF-8-derived carbon material that not only well preserved the 3D-ordered structure of the precursor but also exhibited enhanced chemical stability. Moreover, the carbon derivative exhibited great potential for enzyme immobilization, with a 22.9% increase in loading capacity, a 35.9% increase in specific activity, and a 12.7% increase in activity recovery, compared with SOM-ZIF-8. It is anticipated that this study will shed new light on the realistic design and modification of MOFs for the immobilization of enzymes in biocatalysis and extensive applications.
研究领域:
材料科学
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化学工程
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生物技术
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催化
✓ 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）