INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2023
·
IF 4.2
Hongdan Zhang,Chunyang Wu,Jialiang Wang,Ying Zhao,Peng Cheng,Zhen Zhao
In recent years, the efficient utilization of light alkanes, especially iso-butane and n-butane, has attracted increasing attention. Here, a series of ZSM-5 zeolite-encapsulated Pt-xZnO (x = 0, 0.05, 0.1, 0.25, 0.5, 1) catalysts were prepared via a one-pot hydrothermal method. The dispersion of metal particles, state of metal species, structure, and acidity of catalysts were confirmed by multiple physical and chemical characterizations. The catalysts were used in the catalytic cracking of iso-butane; the conversion of iso-butane would increase with the increase of ZnO content. However, Pt-0.1ZnO@ZSM-5 presented the best catalytic effect. The yield of ethylene and propylene reached 55% at 625 °C; meanwhile, the total yield of high value-added ethylene, propylene, butene, and BTX was as high as 80%.
研究领域:
化学工程
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催化
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材料科学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2023
·
IF 15.1
Hongyu Niu,Xing-Bao Wang,Jingjie Luo,Jiaxin Liu,Chuang Li,Wen-Ying Li,Changhai Liang
Desulfurization plays a critical role in refining crude oil to produce fuel and the manufacture of fine chemicals. However, its low efficiency becomes a great challenge for the present desulfurization if only the C-S cleavage is considered a promising approach to reducing hydrogen consumption under atmospheric pressure. Accordingly, we investigate the critical factors necessary to achieve high C-S cleavage of dibenzothiophenes under mild conditions of 0.1 MPa and H 2 /oil = 100. The mechanism of reactive adsorption desulfurization of dibenzothiophenes with or without steric hindrance at atmospheric pressure on Pt/ZnO is proposed by studying the adsorption model of active metal sites, the Pt efficiency in C-S cleavage influenced by the steric hindrance and the structural evolution of Pt active centers in the presence of sulfur adsorption/deposition. Based on both experimental and DFT results, we report C-S cleavage of dibenzothiophenes with (TOF = 15 h −1 ) or without steric hindrance (TOF = 128 h −1 ) that can be highly efficiently fractured (99.9%) by the interface between PtS x and ZnO . This work has great practical significance for developing atmospheric industrial adsorbents for ultra-deep reactive adsorption desulfurization.
研究领域:
化学工程
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催化材料
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能源化工
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DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2018
·Vol. 43
·期 5
·2220-2230
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IF 3.201
Yan Gong,Xiaofeng Wu,Jiayuan Chen,Wenhui Li,Ning Han,Donghai Zhang,Yunfa Chen
Core–shell metal@ZnO nanoparticles including Au@ZnO, Pd@ZnO and Pt@ZnO were synthesized and utilized for sensing low-concentration benzene. Various techniques were used to characterize the compositional properties of the typical core@shell structure and analyze the relation between the sensing properties and the metal–ZnO hetero-interfaces. When applied as gas-sensing materials, all three core–shell metal@ZnO nanoparticles showed better sensing performance than pure ZnO nanoparticles towards low concentration benzene. In particular, the gas-sensing response of the Pt@ZnO core–shell nanoparticles was 7 times higher than that of pure ZnO towards 0.1 ppm benzene and 63 times higher towards 5 ppm benzene, which was more sensitive than most gas-sensing materials in previous literature. Furthermore, the Pt@ZnO core–shell nanoparticles presented an ultra-low detection limit of no less than 10 ppb, which was lower than those of most gas-sensing materials in previous literature. Besides, the Pt@ZnO core–shell nanoparticles showed high selectivity and long-term response stability with a response value of 2.7 ± 1.6% towards 1 ppm benzene after operating for a month. The enhanced gas-sensing performances of the metal@ZnO core–shell nanoparticles are well correlated to the work function differences between the contacted metal and ZnO within the metal–ZnO hetero-interfaces, which produce high Schottky energy barriers and modulate the electron transfer.
研究领域:
材料科学
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传感器技术
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纳米技术
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DOI
高影响因子
NANOTECHNOLOGY
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2025
·Vol. 36
·期 24
·245501
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IF 2.8
Ning Lian,Jiahang Huo,Wei Liu,Zhiheng Zhang,Xin Chen,Yuqing Du,Xinshou Wang,Jian Song,Gang Cheng
The detection of volatile organic compounds (VOCs), particularly acetone, is critical for applications in environmental monitoring and medical diagnostics, including diabetes detection. Conventional metal oxide semiconductor sensors face challenges such as poor selectivity, high operating temperatures, and limited stability. This study addresses these limitations by developing Pt-doped ZnO nanotubes (Pt–ZnO NTs) using a coaxial electrospinning and in-situ growth method. The process effectively incorporates ZIF-8-derived hollow ZnO structures and uniformly distributed Pt nanoparticles to enhance gas sensing performance. Key findings reveal that the 1% Pt–ZnO NTs sensor exhibits exceptional acetone sensitivity (Ra/Rg = 48.2 for 10 ppm), broad detection range (81.2 ppb–50 ppm), reduced operating temperature (240 °C), and robust selectivity against interfering gases. Advanced characterization and theoretical density functional theory analysis show that Pt doping increases oxygen vacancy concentration, enhances electron transport, and reduces the material's band gap, contributing to superior sensing capabilities. Additionally, the sensor demonstrates excellent stability, repeatability, and practical applicability in distinguishing diabetic and healthy exhaled breath samples. This research introduces a novel gas sensing platform that integrates metal–organic framework-derived structures and noble metal catalysts, offering significant advancements in sensitivity, selectivity, and reliability for VOC detection.
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DOI
PubMed
高影响因子
MATERIALS RESEARCH BULLETIN
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2024
·
IF 5.3
Li-Juan Yue,Su-Mei Shen,Wen-Jie Zhang,Fei-Long Gong,Xuan-Yu Yang,Yong-Hui Zhang
The noble metal Pt modified ZnO nanomaterials are widely used to improve their gas sensing performance. However, the relationship between the catalytic effect of Pt x+ species on the oxygen vacancies formation and gas-sensing performance is still unclear. Herein, the Pt/ZnO nanorods are successfully synthesized by using hydrothermal method , and the content of Pt 0 species are finely tuned through treating in different atmospheres. Notably, Pt modified ZnO calcined under Ar/H 2 (Pt/ZnO-3) exhibits excellent sensing response (R a /R g = 2196, 81 times higher than pure ZnO) to 50 ppm triethylamine at 140 °C, with fast response/recovery behavior, low limit of detection, and superior selectivity. Detailed structural characterization indicates that Pt nanoparticle modification reduces the band gap of the samples. In addition, the high content of Pt 0 species promotes the generation of adsorbed oxygen, which significantly enhances the gas-sensitive performance of the sensor. This work demonstrates that the concentration of Pt 0 species greatly affects gas-sensing performance.
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DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2026
·
IF 7.6
Sun Ruize,Liu Xiaonan,Chen Jingge,Chen Zhangguo,Zhou Jicheng,Xu Wentao
Propane direct dehydrogenation (PDH) is an important way for the high-value utilization of propane (C 3 H 8 ). However, the conventional thermal catalytic reaction process is limited by the thermodynamic equilibrium of the strong endothermic reaction, and usually needs to be operated at high temperature, which makes it difficult to balance high conversion and high selectivity. In this study, a new method of microwave catalytic dehydrogenation of C 3 H 8 to propylene (C 3 H 6 ) at low temperature and high efficiency was proposed, and Pt-ZnO/S-1 + SiC microwave catalyst was developed. It was found that microwave significantly improved the conversion and selectivity of the catalyst, and the reaction was carried out efficiently at lower temperatures. Under low temperature microwave catalysis (MCRM) at 450 ° C, the conversion of C 3 H 8 was as high as 46.4%, and the selectivity of C 3 H 6 was as high as 99.3%, which were significantly better than 18.4% conversion and 95.1% selectivity under conventional thermal catalysis (CRM). Further study shows that the microwave action reduces the apparent activation energy of the catalyst from 75.5 kJ·mol −1 under CRM to 48.7 kJ·mol −1 under MCRM. This study provides a new strategy for the low-temperature and efficient conversion of low-carbon alkanes such as C 3 H 8 and provides a new idea for the application of microwave catalytic technology in other catalytic reactions.
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高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2024
·
IF 4.2
Yanhu Li,Mei Chen,Linghong Xue,Xu Li,Qingji Wang
Metal oxide semiconductor (MOS) sensor, one of the most widely used gas sensors, faces significant challenges in achieving lower detection limit. Addressing this issue, the utilization and strategic design of bimetallic catalysts present a promising avenue. In this paper, Pd-Pt was in-situ grown on ZnO nanoflowers directly prepared on planar substrate and a sensor for detecting acetone was developed. The test results reveal that the Pd-Pt/ZnO nanoflowers sensor exhibits a remarkable 107.6 response to 100 ppm acetone at 350 °C, while presenting a rapid response (15s). Moreover, this sensor demonstrates excellent capability in detecting acetone at concentrations as low as 1 ppb, showcasing impressive gas-sensing performance. The response of the sensor to 100 ppm acetone is twice that of ethanol at the same concentration. The exceptional performance of the sensor results from its distinctive nanoflower structure and the catalytic effect of the Pd-Pt, which offers an extensive surface area and enhances the rate of redox reaction for gas molecules. This in-situ grown method has great potential for improving the gas-sensing performance in gas sensor.
研究领域:
材料科学
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化学
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DOI
高影响因子
BIOELECTROCHEMISTRY
·
2025
·
IF 4.5
Xinru Yuan,Zixin Chen,Yuxuan Li,Jiarui Zhang,Wenxin Li,Huimin Li,Ziyi Lin,Yixin Zheng,Shasha Zheng,Jinting Meng,Yingwei Zhang,Heyun Shen
Electrochemical immunosensors are essential for disease screening, diagnosis, treatment and monitoring. In this study, a novel sandwich-type electrochemical immunosensor has been constructed for the sensitive detection of tumor marker carcinoembryonic antigen (CEA) based on platinum‑zinc oxide (Pt-ZnO) nanoparticles as a signal amplification platform. Pt-ZnO has outstanding peroxidase-like activity that enables efficient catalysis of the H 2 O 2 reaction, leading to effective amplification of the current signal through numerous electron transfers. Its high specific surface area and excellent dispersion allow for immobilization with secondary antibodies through the Pt N bond. Moreover, graphene quantum dots–chitosan possesses outstanding electrical conductivity and biocompatibility, enabling it to improve interfacial electron transfer and capture more primary antibodies on its surface. The Pt-ZnO signal amplification system has achieved a wide linear range for the CEA detection, which spanned from 10 fg mL −1 to 100 ng mL −1 with the limit of detection (LOD) of 1.02 fg mL −1 . The LOD of the electrochemical immunosensor was seven orders of magnitude lower than that of the traditional enzyme-linked immunosorbent assay. Furthermore, it has viable reproducibility, stability and practicality. Hence the Pt-ZnO electrochemical immunosensor has great potential for the clinical identification of CEA.
研究领域:
分析化学
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纳米技术
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生物化学
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电化学
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生物医学工程
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癌症诊断
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产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2021
·Vol. 31
·期 38
·2105001
·
IF 18.808
Yushuai Xu,Jian Han,Yidong Luo,Yaochun Liu,Junping Ding,Zhifang Zhou,Chan Liu,Mingchu Zou,Jinle Lan,Ce-wen Nan,Yuanhua Lin
Gaseous CO 2 reduction driven by solar energy is a promising solution to the current energy crisis and environmental problems. Although thermocatalysts, electrocatalysts, and photocatalysts are developed as classical strategies for CO 2 reduction, it remains a challenge for high efficiency and CO 2 net reduction during this process. Here, a multi-field driven hybrid catalyst, Pt/ZnO nanorod arrays/Bi 1-x Er x CuSeO, is designed using the photo-thermoelectric effect, which can take advantage of both photocatalysis and thermocatalysis. The results indicate that the maximum CO production rate of 2.91 µmol g −1 h −1 at 423 K can be realized in such Pt/ZnONR/Bi 0.9 Er 0.1 CuSeO hybrid catalyst, as can be ascribed to a synergetic photo-thermoelectric effect (i.e., light irradiation can provide heat, photo-excited carriers, and the concomitant Seebeck voltage). The band alignment of ZnO/BiCuSeO heterojunction and carriers transport are proposed to be optimized by the Er doped BiCuSeO thermoelectric supports, greatly enhancing the catalytic performance. The application of thermoelectric support could be promising in the structure design of multi-field driven hybrid catalysts, and such a photo-thermoelectric catalytic process demonstrates a desirable way of solar energy utilization in CO 2 transformation.
研究领域:
材料科学
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催化
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可再生能源
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环境科学
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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）