Journal of the Taiwan Institute of Chemical Engineers
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2025
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IF 6.3
Yan Chen,Qingsong Luo,Yu Wan,Shuang Gao,Yanting Wang,Changhao Feng
Background The rapid identification of n-butanol holds substantial significance; however, the current response speed of n-butanol gas sensors is relatively slow. The ZnO/SnO 2 composite nanofibers present a considerable prospect as a suitable alternative for conventional n-butanol sensors. Methods Pure SnO 2 and composite nanofibers composed of ZnO/SnO 2 with distinct molar ratios were crafted via the electrospinning technique. The microstructure and components of these composite nanofibers were analyzed and identified using XRD and SEM. Significant findings The ZnO/SnO 2 composite nanofibers-based gas sensor (ZS2) exhibited enhanced response towards n-butanol, achieving a high response of 29.68 to 30 ppm n-butanol at 150 °C, which was 3.3 times greater than that of SnO 2 . Moreover, the sensor also showcased a swift response time, taking just 1 s to react. Furthermore, the ZS2 sensor had a lower potential limit for detecting n-butanol, with a value of 0.27 ppm. The good repeatability and stability were also confirmed in this study. The successful creation of heterojunctions is thought to be contributing factors to ZS2 nanofibers’ superior sensing capabilities. Therefore, ZnO/SnO 2 composite nanofibers can be considered as a promising candidate for sensing materials in practical applications.
研究领域:
材料科学
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传感器技术
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2024
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IF 6.3
Mei Dong,Wenjun Li,Liang Geng,Ruixue Huang,Yuan Liu,Hongli Han
Herein, CuCo 2 O 4 hollow porous nanospheres (HPN), nanosheets (NS), and nanowires (NW) were synthesized via solvothermal and calcination processes, and were used to construct efficient heterojunctions with Cd 0.5 Zn 0.5 S. Interestingly, the unique hollow porous structure exhibits enhanced light absorption, large pore diameter (12.57 nm), and strong hydrophilicity (10.05°). Photocatalytic results indicate that CuCo 2 O 4 HPN/Cd 0.5 Zn 0.5 S achieves the optimal hydrogen production rate, which is 5.4, 1.2, and 1.3 times than that of pure Cd 0.5 Zn 0.5 S, CuCo 2 O 4 NW/Cd 0.5 Zn 0.5 S and CuCo 2 O 4 NS/Cd 0.5 Zn 0.5 S, respectively. High-resolution TEM and theoretical calculations confirm that (311)/(111) facet junctions in CuCo 2 O 4 nanospheres form a work function difference (0.24 eV), which significantly facilitates charge transfer and separation. Mott-Schottky and Ultraviolet photoelectron spectroscopy analyses indicate that p-type CuCo 2 O 4 and n-type Cd 0.5 Zn 0.5 S have staggered energy levels and a distinct Fermi level difference (1.85 eV), which leads to rearrangement of the Fermi energy level and modulation of charge transfer pathway. The resulting energy band bending and built-in electric field promote charge transfer at the heterojunction interface more effectively. The synergistic mechanism of the facet junction and p-n junction finally achieves high-efficiency hydrogen production. This work provides new insights into how to construct efficient p-n heterojunction photocatalysts and presents the synergistic mechanism of facet junction and p-n junction.
研究领域:
材料科学
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能源科学
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化学
✓ 已验证
产品关联
DOI
高影响因子
EUROPEAN POLYMER JOURNAL
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2020
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IF 3.862
Faliang Luo,Juntao Ren,Chunyu Li,Yanming Hu,Guangyuan Zhou
A styrene derivative, 4-N,N-dimethylaminostyrene (MAS), serving as both catalyst and monomer was exploited in reversible complexation mediated polymerization (RCMP). Radical trap experiment and UV–vis spectroscopy analysis revealed that MAS as a catalyst could abstract iodine from iodine-containing compound to generate propagating radical species. Kinetic studies demonstrated that the polymerization of styrene in the presence of MAS proceeded in a “living”/controlled manner, affording polymers with controlled molecular weights and narrow molecular weight distributions. The livingness of the obtained polymer was confirmed by chain extension. Determined by water contact angle measurement, incorporation of MAS into the polymer led to the enhancement of surface energy. Moreover, using α,ω-bis(2-iodo-2-phenylacetoxy)-end functionalized cis -1,4-polyisoprene as a macroinitiator which was synthesized through cross-metathesis of cis -1,4-polyisoprene with cis -1, 4-bis(2-iodo-2-phenylacetoxy)-2-butene, the polymerization of styrene in the presence of MAS also exhibited typical features of “living”/controlled radical polymerization to yield polystyrene-block-polyisoprene-block-polystyrene.
研究领域:
高分子科学
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材料科学
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化学工程
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DOI
高影响因子
KOREAN JOURNAL OF CHEMICAL ENGINEERING
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2014
·Vol. 32
·期 6
·1158-1163
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IF 1.241
Yang Wenge,Wu Keyi,Hu Yonghong,Zhang Tuan,Guo Qirun,Yang Shouhai,Shi Ying
The solubility of N-ethylcarbazole in (ethanol+petroleum ether) binary solvent mixtures was measured with the temperature changing from 280.15 K to 316.15 K. The experimental data matched the solvent/Redlich-Kister (CNIBS/R-K) equation and the Jouyban-Acree equation. Computational results showed the CNIBS/R-K equation was more suitable than the Jouyban-Acree equation. The solution process in the thermodynamic properties, including the Gibbs energy, enthalpy, and entropy, was calculated by the van’t Hoff analysis.
研究领域:
化学
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物理化学
✓ 已验证
DOI
高影响因子
Journal of Cleaner Production
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2022
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IF 11.072
Shunan Yin,Jinxian Zhao,Shiping Wu,Xuhui Wang,Yanhong Quan,Jun Ren
Electrochemical reduction of CO 2 to valuable chemicals using electricity from renewable sources is a promising approach to realize the carbon cycle. Here, a novel bimetallic nitrogen-doped carbon catalyst (M-N-C, where M denotes the metal) CoCu–N–C electrocatalyst has been synthesized by pyrolyzing a copper-doped cobalt(II) acetate–phenanthroline complex formed from the metal acetates and 1,10-phenanthroline dissolved in ethanol. The optimal CoCu–N–C catalyst with molar ratio of Cu/(Co + Cu) = 0.15 displayed superior performance, enabling a faradaic efficiency of CO production of 76.5% at an overpotential of 0.57 V as well as an increased CO current density of 8.48 mA cm −2 at −0.98 V versus reversible hydrogen electrode (far superior than the Co–N–C of 4.20 mA cm −2 and Cu–N–C of 0.07 mA cm −2 ) and a decreased charge-transfer resistance compared with Co–N–C and Cu–N–C catalysts. The addition of Cu, which serves as a structure promoter to improve the dispersion of Co, thereby providing sufficient Co-N x active sites for the electrochemical CO 2 reduction reaction (CRR). Moreover, doping Cu changes the electronic environment around Co slightly and promotes the charge transfer capability so that reduces the energy barrier of potential-limiting energy, thereby improving the CRR performance of catalyst.
研究领域:
材料科学
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电化学
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可再生能源
✓ 已验证
DOI
高影响因子
ENERGY & FUELS
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2024
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IF 5.2
Yuwen Deng,Jijun Guo,Zaili Xiong,Wang Li,Changyang Wang,Meirong Zeng,Zhongyue Zhou,Long Zhao,Jiuzhong Yang,Wenhao Yuan,Fei Qi
The oxidation of pure n-butanal and the n-butanal/NO mixture was investigated in an atmospheric jet-stirred reactor at stoichiometric conditions and over the temperature range of 425–925 K. Mole fraction profiles of characteristic intermediates, like nitrogenous, carbonyl, and hydrocarbon intermediates were obtained using synchrotron vacuum ultraviolet photoionization mass spectrometry (SVUV–PIMS) via molecular beam sampling. A previous reported kinetic model of n-butanal oxidation was improved and a submechanism interpreting n-butanal/NOx interaction kinetics was developed and validated against experimental measurements. Results show that NO addition results in a featured temperature dependence of n-butanal reactivity similar to that of hydrocarbon fuels, i.e., inhibiting reactivity at low temperatures while promoting at intermediate temperatures. However, the presence of the n-butanal carbonyl group introduces distinct kinetic effects on this system compared to previously reported hydrocarbon/NO systems. Model analysis suggests a pronounced interaction between NO and the n-butanal carbonyl group, particularly at low temperatures where NO notably accelerates the removal of the carbonyl group, yielding large amounts of propyl radicals. This interaction results in the suppression of peroxy radical chemistry on the alkyl chain and chain-branching reactions of the propyl radical, thus decreasing the low-temperature reactivity of n-butanal. At intermediate temperatures, the influence of the carbonyl group on reactivity is not as pronounced and the increased reactivity primarily depends upon the impact of NOx on the active radical pool. For example, NOx-related chemistry accelerated the formation of OH radicals, thus facilitating fuel decomposition and the further conversion of CO to CO2. Besides, NO addition significantly affects the speciation of several products, such as methane, ethane, and formaldehyde, which was correlated to the additional competitive pathways introduced by NOx.
研究领域:
化学动力学
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燃烧科学
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产品关联
DOI
高影响因子
Catalysts
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2022
·Vol. 12
·期 12
·1496
·
IF 4.501
Fengyun Su,Zhishuai Wang,Haiquan Xie,Yezhen Zhang,Chenghua Ding,Liqun Ye
Hydrogen evolution by photocatalytic technology has been one of the most promising and attractive solutions, and can harvest and convert the abundant solar energy into green, renewable hydrogen energy. As a new kind of photocatalytic material, graphitic carbon nitride (g-C3N4) has drawn much attention in photocataluytic H2production due to its visible light response, ease of preparation and good stability. For a higher photocatalyic performance, N defects were introduced in to the traditional g-C3N4in this work. The existence of N defects was proved by adequate material characterization. Significantly, a new absorption region at around 500 nm of N-deficient g-C3N4appeared, revealing the exciting n-π* transition of lone pair electrons. The photocatalytic H2production performance of N-deficient g-C3N4was increased by 5.8 times. The enhanced photocatalytic performance of N-deficient g-C3N4was attributed to the enhanced visible light absorption, as well as the promoted separation of photo-generated carries and increased specific surface area.Keywords:N defects;g-C3N4;H2evolution;photocatalysis;n-π* transition
研究领域:
材料科学
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能源科学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2017
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IF 3.582
Shuang Ji,Zhourong Xiao,Haocui Zhang,Ling Li,Guozhu Li,Li Wang,Guozhu Liu
A high surface area (HSA) Ce 0.75 Zr 0.25 O 2 (CZ) support was synthesized by hydrothermal synthesis method with assistance of surfactant (cetyltrimethyl ammonium bromide , CTAB), and then 2.0 wt% Ru was impregnated on it to obtain a steam reforming catalyst for n-dodecane. The surface area of Ru/HSA-CZ catalyst is 107.6 m 2 g −1 , which is ca. three times higher than that prepared through the sol-gel (sg) method (34.3 m 2 g −1 , Ru/CZ-sg) and ca. 40% higher than that without CTAB (76.7 m 2 g −1 , Ru/CZ-wo). Catalytic steam reforming of n-dodecane, shows the completely conversion of n-dodecane over Ru/HSA-CZ and slightly drops about 6% (650 °C, LHSV = 12 mL/g h, S/C = 4, time on stream = 7 h) while 81% and 70% were observed for the Ru/CZ-wo and Ru/CZ-sg but with twice (or triple) deactivation rates. The possible reason for observed better performance of Ru/HSA-CZ should be attributed to the high metal dispersion of Ru over HSA-CZ, and the favorable Ru-support interaction as evidenced by H 2 -Temperature programmed reduction (H 2 -TPR), and high redox ability of high surface area Ce 0.75 Zr 0.25 O 2 support thanks to high Ce 3+ content. Further steam reforming of n-dodecane over Ru/HSA-CZ at higher LHSV (750 °C, LHSV = 36 mL/g h, S/C = 4) exhibits completed conversion and without significant deactivation.
研究领域:
化学工程
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催化材料
✓ 已验证
DOI
高影响因子
Industrial Chemistry & Materials
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2023
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IF 0
Yu Chen,Chang-Long Tan,Jing-Yu Li,Ming-Yu Qi,Zi-Rong Tang,Yi-Jun Xu
Photocatalytic hydrogen (H2) production coupled with selective oxidation of organic compounds into high-value-added organic intermediates has expansive prospects in the utilization and transformation of solar energy, which meets the development requirements of green chemistry. In this work, high-efficiency hole cocatalyst PdS-decorated In2S3 flower-like microspheres are fabricated for the effective visible-light-driven C–N coupling of amines to imines coupled with H2 evolution. Owing to the establishment of the internal electric field, which further boosts the transfer of photoexcited holes to PdS, PdS–In2S3 exhibits distinctly enhanced photocatalytic redox performance, which is 39.8 times higher for H2 and 14.3 times higher for N-benzylidenebenzylamine than that of the blank In2S3, along with high selectivity and stability. Furthermore, the practicability of dehydrogenation coupling of various aromatic amines to the corresponding C–N coupling products on PdS–In2S3 has been demonstrated and a plausible reaction mechanism has been proposed. This work is anticipated to stimulate further interest in establishing an innovative photoredox platform for selective organic synthesis coupled with H2 evolution in a green and sustainable way.
研究领域:
材料科学
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化学工程
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环境科学
✓ 已验证
DOI
Nature Communications
·
2025
·Vol. 16
·期 1
·1-12
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IF 15.7
Zheng Yizhen,Lin Xing,Li Jiongzhao,Chen Jianan,Wu Wenhao,Song Zixuan,Gao Yuan,Hu Zhuang,Wang Huifeng,Ye Zikang,Qin Haiyan,Peng Xiaogang
Quantum-dot optoelectronics, pivotal for lighting, lasing and photovoltaics, rely on nanocrystalline oxide electron-injection layer. Here, we discover that the prevalent surface magnesium-modified zinc oxide electron-injection layer possesses poor n-type attributes, leading to the suboptimal and encapsulation-resin-sensitive performance of quantum-dot light-emitting diodes. A heavily n-doped nanocrystalline electron-injection layer—exhibiting ohmic transport with 1000 times higher electron conductivity and improved hole blockage—is developed via a simple reductive treatment. The resulting sub-bandgap-driven quantum-dot light-emitting diodes exhibit optimal efficiency and extraordinarily-high brightness, surpassing current benchmarks by at least 2.6-fold, and reaching levels suitable for quantum-dot laser diodes with only modest bias. This breakthrough further empowers white-lighting quantum-dot light-emitting diodes to exceed the 2035 U.S. Department of Energy’s targets for general lighting, which currently accounts for ~15% of global electricity consumption. Our work opens a door for understanding and optimizing carrier transport in nanocrystalline semiconductors shared by various types of solution-processed optoelectronic devices.
研究领域:
材料科学
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光电子学
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半导体物理
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Lifan Li,Deming Zhou,Jiapeng Ye,Kun Luan,Zaixing Zhang,Lingxiao Jing,Tonghua Zhang
Long-lasting antibacterial properties in cotton fabric address microbial growth, odor formation, and hygiene issues, which are common drawbacks at the usage of natural fibers. Recent cotton market demands durable, eco-friendly solutions that enhance fabric longevity and performance in various applications. This study presents the development of a durable and multifunctional antibacterial cotton fabric achieved through a feasible and cost-effective “one-bath” impregnation process. A N -halamine precursor, featuring a terminal chlorine group (TD@Cl), was chemically bonded to the hydroxyl groups of cotton fabric, imparting enhanced antibacterial properties along with flame-retardancy, hydrophobicity, and self-cleaning capabilities. The TD@Cl treated fabric, designated as COTD, demonstrated exceptional antibacterial efficacy, exhibiting over 99.99% efficacy against both S. aureus and E. coli , with rapid bactericidal action within 3 min of contact. Notably, the COTD-Cl fabric maintained its antibacterial performance even after 40 washing cycles. Flame-retardancy tests revealed a 43.4% reduction in total heat release (THR) compared to untreated cotton. The fabric exhibited superior hydrophobicity and self-cleaning properties. Its air permeability and water vapour permeability are also discussed. These results highlight the potential of this efficient method to produce durable, multifunctional cotton fabrics suitable for a wide range of practical usages, such like garments, decoration and furniture etc.
研究领域:
材料科学
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纺织工程
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微生物学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
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IF 7.2
Yu Fu,Fangbo Zhao,Yingzheng Liu,Ruiqi Li,Hongxu Chen,Liu Yang,Zhiguo Li,Mingcong Wu,Dan Wang
In this research, we introduce a novel and efficient approach for enhancing both the antibacterial efficacy and resistance to protein fouling of nanofiltration (NF) membranes, marking the first report of a method capable of concurrently addressing these critical membrane performance parameters. After traditional interface polymerization (IP), NF membranes were post-treated by the antibacterial N-(3-Aminopropyl)-imidazole (ANPI) which can be grafted on the membrane by its amino group reacting with rest acyl chloride in IP on the surface. After parameter optimization of the ANPI concentration, the modified membrane NF-12 demonstrated up to 99% antibacterial activity against two representative pathogens, Escherichia coli and Staphylococcus aureus . Except for this, due to the zwitterionic effect, the modified membrane achieved a remarkable 68.7% enhancement in water flux and the recovery rate of BSA cyclic pollution reached 97.5%. From mechanism analysis, it can be proposed that the post-grafted ANPI brought antibacterial properties to the NF membrane, which was able to kill bacteria attached to the membrane surfaces. Also, the imidazole protonation introduced positive charges to the NF membrane surface, mixing with negative charges produced by acyl chloride hydration, which produced the zwitterionic effect and facilitated the formation of a robust hydrophilic hydration layer, thereby significantly diminishing the adhesion of contaminants.
研究领域:
材料科学
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环境工程
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生物医学
✓ 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）