Article
Chemistry, Multidisciplinary
Jessica De Santis, Valentina Paolucci, Luigi Stagi, Davide Carboni, Luca Malfatti, Carlo Cantalini, Plinio Innocenzi
Summary: The design of functional coatings for touchscreens and haptic interfaces is crucial in electronic devices. This study developed photoactivated anti-fingerprint coatings by incorporating 2D-SnSe2 nanoflakes into ordered mesoporous titania thin films. The resulting heterostructures showed enhanced ability to remove fingerprints and improved photocatalytic activity. The addition of SnSe2 did not affect the self-assembly process and the three-dimensional pore structure of the films. Furthermore, exposure of the films to sunlight and UV light completely eliminated fingerprints, suggesting potential applications in self-cleaning mechanisms.
Review
Chemistry, Multidisciplinary
Plinio Innocenzi
Summary: The synthesis of ordered mesoporous films via self-assembly is a significant achievement in nanoscience, but controlling the complex chemical-physical phenomena caused by solvent evaporation remains challenging. While there have been advancements in basic research, more understanding is needed on the self-organization mechanism and the physics and chemistry of mesoscale porosity.
Review
Materials Science, Multidisciplinary
Zhenhui Liu, Yue Du, Pengfei Zhang, Zechao Zhuang, Dingsheng Wang
Summary: Rationally designing an appropriate support is crucial for catalysis, and nitrogen-doped ordered mesoporous carbons (NOMCs) are emerging as intriguing supports with well-defined pore channels and abundant functional groups, offering potential for improved catalysis. Various synthetic strategies can be used to prepare NOMCs, and their applications in electrocatalysis and organic synthesis show promising prospects for future developments.
Article
Chemistry, Multidisciplinary
Nian Li, Renjun Guo, Wei Chen, Volker Koerstgens, Julian E. Heger, Suzhe Liang, Calvin J. Brett, Md Asjad Hossain, Jianshu Zheng, Peter S. Deimel, Ali Buyruk, Francesco Allegretti, Matthias Schwartzkopf, Jonathan G. C. Veinot, Guido Schmitz, Johannes V. Barth, Tayebeh Ameri, Stephan V. Roth, Peter Mueller-Buschbaum
Summary: Germanium nanocrystals are used to modify mesoporous titania films for more efficient photovoltaic anodes. Air-annealed nanocomposite films show promise for enhancing electron transfer and improving the performance of perovskite solar cells, leading to increased device efficiency and reduced hysteresis.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Biochemistry & Molecular Biology
Gunnar Simonarson, Antiope Lotsari, Anders E. C. Palmqvist
Summary: The effects of spray time, film thickness, synthesis time, and aging time on the structure and order of mesoporous titania were studied. Locally ordered mesoporous polycrystalline titania films can be prepared by adjusting the synthesis parameters.
Article
Chemistry, Applied
Xuhui Xia, Chung-Fu Cheng, Yu Zhu, Bryan D. Vogt
Summary: A simple microwave accelerated approach was used to generate high surface area, nitrogen-doped mesoporous carbons directly on a nickel foam framework, without the need for an inorganic template. This material showed stable performance as an electrocatalyst for the oxygen reduction reaction, making it a promising option for various applications.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Applied
Cristina Coromelci, Maria Ignat, Liviu Sacarescu, Mariana Neamtu
Summary: The photocatalytic activity of four mesoporous RE metal doped titania was compared, with Sm-TiO2 showing the highest activity and Ce-TiO2 the lowest.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Junyuan Dong, Huiwei Ding, Bo Peng, Yu Guan, Qiaofeng Han
Summary: Mesoporous SrCO3 nanospheres with large specific surface area, narrow pore distribution, and small average pore diameter were prepared at room temperature using sodium citrate as a capping agent and water and ethylene glycol to dissolve Na2CO3 and Sr(NO3)2, respectively. The as-prepared mesoporous SrCO3 exhibited excellent photocatalytic activity for the degradation of tetracycline under visible light, with a degradation efficiency of 82.5% within 60 min of irradiation. TC molecules adsorbed on the catalyst surface were responsible for the visible light absorption and electron excitation, and a possible mechanism for TC degradation on mesoporous SrCO3 was proposed in the study.
Article
Chemistry, Multidisciplinary
Sanjeev Gupta, Surya Kumar Vatti, Qinfen Gu, Dipti Wagh, Haresh Manyar, Parasuraman Selvam
Summary: The efficient generation of hydrogen from water using solar irradiation is highly desired for the hydrogen economy, and N-doped TiO2 photocatalysts are commonly used for this purpose. In this study, a unique defect-induced nitrogen-doped mesoporous titania was synthesized and found to exhibit excellent photocatalytic activity for the hydrogen evolution reaction. The presence of intrinsic defects and the unique phase composition of the material contribute to its superior activity.
Review
Chemistry, Multidisciplinary
Yuan Gao, Qing Wang, Guozhao Ji, Aimin Li, Jiamin Niu
Summary: Ordered mesoporous carbon (OMC) has been successfully doped with different heteroatoms to enhance performance, with detailed mechanisms of how various heteroatoms affect its electrochemical properties and porous structure summarized. Applications of different heteroatom-doped OMC in supercapacitors, electrocatalysis, and ion batteries have been widely explored during the last decade.
Article
Energy & Fuels
Hongkun Jin, Zhongyi An, Qichao Li, Yuanqiang Duan, Zhihao Zhou, Zhenkun Sun, Lunbo Duan
Summary: The study shows that alumina with ordered mesoporous structures exhibits significant catalytic activity in COS hydrolysis, with further improvement when incorporated with transition metals. By optimizing pore size and additive type, a stable catalyst with high efficiency in COS conversion and strong sulfur resistance has been established.
Article
Materials Science, Multidisciplinary
Mai Mersal, Gehad G. Mohamed, Abdallah F. Zedan
Summary: Alcohol oxidation is an important chemical reaction of interest in energy and industrial sectors. In this study, n-TiO2@WO3 heterojunction photocatalysts were prepared and their catalytic activity towards methanol oxidation under visible-light was investigated. The hybrid photocatalyst showed enhanced activity compared to pure counterparts.
Article
Materials Science, Ceramics
Guifei Zhang, Shiyun Tang, Anjiang Tang
Summary: Bimetallic co-doped ordered mesoporous MxCey/(TiO2)(z)@SiO2 aerogel composites were prepared by the sol-gel combined with atmospheric pressure drying method. The catalysts showed good adsorption capacity and the doping of Y and Zn contributed to the highest catalytic performance, achieving a degradation rate of 98% under visible light.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Jinsong Shi, Hongmin Cui, Jianguo Xu, Nanfu Yan, Shengyong You
Summary: The influences of porous carbon's physicochemical properties on CO2 adsorption at different pressures were investigated in this study. N-doped hierarchically ordered micro-mesoporous carbons (NHOMCs) were synthesized and their characteristics and CO2 uptake were analyzed. The results showed that NHOMCs exhibited high CO2 adsorption capacity and the adsorption performance was correlated with the physicochemical properties of the materials.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Materials Science, Multidisciplinary
Thangaian Kesavan, Raja Murugan, Kothandaraman Ramanujam
Summary: In this study, nitrogen and phosphorous co-doped ordered mesoporous carbon (NPMC) was successfully synthesized and its charge storage capacity in aqueous and non-aqueous electrolytes was explored. The results showed that NPMC exhibited high specific capacitance and remarkable capacitance retention in water medium, and impressive energy density and power density in non-aqueous medium.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Chemistry, Physical
Ming-Yi Chen, Ngoc Thanh Thuy Tran, Ahmed Abubakar Alao, Wen-Dung Hsu
Summary: This study demonstrates the significance of surface Pt atom arrangement for the efficiency of ORR in PEMFCs and reveals the correlation between Pt-Pt average distance and O2 dissociation barrier. Furthermore, the study discovers a robust correlation between the level of the catalyst's d-band center and O2 adsorption energy. High-entropy alloy substrates provide potential for controlling Pt arrangement and O2 dissociation barrier.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Eduardo C. Atayde Jr, Babasaheb M. Matsagar, Yu-Cheng Wang, Kevin C. -W. Wu
Summary: This study presents the first application of an acidic MOF, Sulfated MOF-808, in catalyzing the HAA reactions of furan oligomers for the production of biofuel precursors. The catalyst showed high yield, selectivity, and recyclability, making it versatile for different starting materials.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Maria do Carmo Rangel, Francieli Martins Mayer, Soraia Jesus de Oliveira, Sergio Gustavo Marchetti, Fabricio Luiz Faita, Doris Ruiz, Giovanni Saboia, Mariana Kieling Dagostini, Jonder Morais, Maria do Carmo Martins Alves
Summary: This study developed a new catalyst by investigating the effect of magnesium on the catalytic properties of hematite in ethylbenzene dehydrogenation. The catalyst showed important differences in activity, selectivity, and stability, making it a promising candidate for commercial applications.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Yanjun Li, Qian Wang, Hui Tian, Mingyuan Zhu, Yuanyuan Liu
Summary: A novel strategy using microwave-assisted precipitation was proposed to prepare defective CsH3PMo11VO40 catalyst for the oxidation of methacrolein to methacrylic acid. Microwave treatment accelerates crystallization, increases vanadyl species content, and forms defective Keggin structures, thereby enhancing the oxidation capacity of the catalyst.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Rajeshwari Athavale, Sailee Gardi, Fatima Choudhary, Dayanand Patil, Nandkishor Chandan, Paresh More
Summary: In this study, a novel acidic ionic liquid catalyst was prepared and used for the synthesis of bis-indolyl methane derivatives. The catalyst exhibited short reaction times, easy purification, and reusability.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Masatomo Hattori, Takato Hattori, Masakuni Ozawa
Summary: Cu-added gamma-Al2O3 catalysts were prepared with varying Cu loadings and the effects of copper oxidation states on catalytic activity were investigated. The results showed that the addition of copper increased the catalyst activity, but excessive copper loading decreased catalytic activity. XRD and TEM analysis indicated the formation of a solid solution of copper oxide species on the surface of gamma-Al2O3. XAS and TPR data demonstrated variations in copper oxidation states among the catalysts.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Liwei Fang, Shiyang Niu, Shengsen Wang, Yiqing Lu, Yuanhui Cheng
Summary: In this study, PtNi alloy on nitrogen-doped carbon and SnO2 dual-support was designed to modulate the metal-support interaction, resulting in improved catalytic activity and stability for oxygen reduction reaction. The SnO2/PtNi/NC catalyst exhibited a strongly coupled interface, enhanced electron transfer, and higher half-wave potential compared to PtNi/NC and commercial Pt/C.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Shohei Harada, Duanxing Li, Kenta Iyoki, Masaru Ogura
Summary: This study investigates the catalytic performance of a composite catalyst composed of ZnZrOX and H-zeolite for the hydrogenation of CO2. The deactivation of the composite catalyst is influenced by ion exchange of Zn2+ and/or coke, with their effects differing based on the zeolite structure. Separating the grains of the composite catalyst can prevent deactivation.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Laura Proano, Christopher W. Jones
Summary: In this study, NiGa alloy particles supported on CeO2, ZrO2, and ZrO2-CeO2 solid solutions were prepared and characterized. The nature of the support was found to have a significant influence on the catalyst's activity and selectivity, with the crystalline structure of ZrO2 having the greatest impact. Pure ZrO2 showed the highest methanol selectivity and CO2 conversion at high Zr:Ce ratios. In equimolar and Ce-rich conditions, basic sites and oxygen vacancies were found to be the key parameters affecting methanol production.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Liyan Zhang, Yinze Yang, Leilei Zhou, Fengyu Zhao, Haiyang Cheng
Summary: 1,6-Hexamethylenediamine was successfully synthesized via the reductive amination of 1,6-hexanediol using a Ru/PRL(x)-Al2O3 catalyst. The highly dispersed and anchored Ru species, formed by 1,10-phenanthroline (PRL), played a crucial role in the catalytic reaction. The formation of new acid-base pairs, electron deficient Ru species, and smaller nanoparticles contributed to the improved catalytic performances of the Ru/PRL-Al2O3 catalyst.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Anita Horvath, Miklos Nemeth, Andrea Beck, Gyorgy Safran, Valeria La Parola, Leonarda Francesca Liotta, Gregor Zerjav, Matevz Roskaric, Albin Pintar
Summary: This study investigates the catalytic and structural changes caused by the addition of 0.25 wt% indium in a 3% Ni/CeO2-Al2O3 catalyst prepared by impregnation method. The results show that the addition of indium can decrease the activity of the catalyst, but it improves its stability and reduces coking.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Ankush Kularkar, Vaibhav Vilas Khedekar, Sachin D. Chaudhari, Mudavath Ravi, Sadhana S. Rayalu, Penumaka Nagababu
Summary: Efficiently addressing the challenges of photocatalytic CO2 reduction to CH3OH is crucial. This study developed Zn-BTC MOF and its composites with CaIn2S4, achieving highly efficient and robust photocatalytic CO2 reduction to CH3OH under ambient conditions, using H2O2 as the hydrogen source. Among the composites, ZMCIS4 demonstrated excellent performance with a CH3OH evolution of 49100 μmol/g.cat and a quantum efficiency of approximately 78.41%. The enhanced performance was attributed to the production of nascent hydrogen atoms (H center dot) through the photo-splitting of H2O2 on the ZMCIS surface.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Dan Liu, Yudong Li, Chengyu Wang, Haiyue Yang, Rong Wang, Shujun Li, Xiaohui Yang
Summary: In this study, a self-supporting three-dimensional porous Co3O4 nanobelt array decorated on nickel foam (P-Co3O4 -NBA@NF) electrode with numerous active sites was successfully constructed for the oxidation of 5-Hydroxymethylfurfural (HMF) to 2,5-furan dicarboxylic acid (FDCA). The P-Co3O4 -NBA@NF electrode demonstrated high conversion efficiency, selectivity, and Faraday efficiency, as well as remarkable long-term stability. This research provides a promising electrocatalyst for biomass conversion.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Yimin Li, Enggah Kurniawan, Fumiya Sato, Takayoshi Hara, Yasuhiro Yamada, Satoshi Sato
Summary: In this study, several silica-alumina catalysts modified with Ag were examined for the dehydration of 1,3-butanediol to 1,3-butadiene. Among them, an amorphous silica-alumina catalyst (SAL-3) modified with Ag showed the highest improvement in catalytic activity and stability when operated in H2 flow. The generation of reversible acid sites was found to be the reason behind the enhanced activity and stability of this Ag/SAL-3 catalyst. The effects of various parameters on the catalytic activity of Ag/SAL-3, such as reaction temperature, contact time, Ag content, and carrier gas, were investigated.
APPLIED CATALYSIS A-GENERAL
(2024)