Article
Chemistry, Multidisciplinary
Tingting Lu, Wenfu Yan, Guodong Feng, Xiaolin Luo, Yueqiao Hu, Jiale Guo, Zhan Yu, Zhen Zhao, Shujiang Ding
Summary: In this study, an acid-free green synthesis strategy was proposed for the one-pot synthesis of highly ordered mesoporous materials via the radical route with singlet oxygen promotion. The synthesis approach overcomes the challenge in the direct one-pot acid-free synthesis of highly ordered materials and provides a facile and environmentally friendly route for the future large-scale production of ordered mesoporous materials.
Article
Engineering, Chemical
Yunchuang Li, Yanan Xi, Xiaohan Gao, Fangming Xie, Honghai Liu, Xionghou Gao, Hongtao Liu
Summary: By introducing a high hydrothermal stable cotemplate into a high-concentration-template solution, mesoporous aluminosilicates with high overall strength, surface area, and hydrothermal stability were successfully synthesized. This method greatly reduces the consumption of organic template and water.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Engineering, Chemical
Yunchuang Li, Yanan Xi, Xiaohan Gao, Fangming Xie, Honghai Liu, Xionghou Gao, Hongtao Liu
Summary: The synthesis of hydrothermally stable mesoporous aluminosilicates with high concentration cotemplate solution has shown promising results in reducing the consumption of organic templates and water. The introduction of a cotemplate with a high hydrophilic-lipophilic balance value into F68 micelles improved the physicochemical properties of the MA products, resulting in well-crystallized MAs with increased hydrothermal stability.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Review
Energy & Fuels
Hosein Ghaedi, Ming Zhao
Summary: This study reviews the recent development methods for template removal from various types of mesoporous silica materials. The methods are categorized into physical methods and chemical methods, and their effects on material properties and template removal mechanisms are discussed in detail.
Article
Chemistry, Physical
Xiaoqin Ma, Aizhao Pan, Fengyi He, Shengying Huang, Junyan Liang, Ling He
Summary: In this study, a kinetic approach was proposed to form self-assembled nanowires using a PDMS-based block copolymer. The copolymer synthesized by using PDMS-Br as the macroinitiator displayed core-shell spherical micelles, which transformed into nanowires within 5 days through a typical kinetic shape evolution. The diameter of the assembled nanowires was about 25-35 nm. The formation of these nanowires was attributed to the balance between the PDMS and PCEMA components, where the PDMS segment played a crucial role in the shape transformation of the micelles. The solvents used also affected the formation of nanowires, with tetrahydrofuran and dichloromethane favoring nanowire formation, while acetone favored core-shell micelles. The stability of the nanowires was enhanced through cross-linking of the PCEMA group under UV irradiation. This work provides a new strategy for the formation of nanowires and offers a guide for the diversified self-assembly of nanostructures from copolymers.
Article
Chemistry, Physical
Xuequan Xu, Jinying Zhang, Na Yang, Xuewen Zhao, Mengyue Gu, Yonghong Cheng, Chunming Niu
Summary: Hollow sphere structures with high specific surface area have attracted attention in the catalytic field. In this study, Ni3S2/MoS2 porous hollow spheres with uniform distribution were synthesized on Ni foam using a one-step hydrothermal method. The as-produced spheres exhibited excellent catalytic performance in the oxygen evolution reaction.
Article
Chemistry, Physical
Yufeng Zhai, Zhi Qiao, Runze Yu, Zhu Fang, Gang Chen, Zhiyuan Zhu
Summary: The dynamic formation process of SBA-15 using hexane as a swelling agent is investigated through in situ SAXS technique. The micelles transform rapidly from spherical to cylindrical shapes and self-assemble into a hexagonal structure. The growth of SBA-15 involves two distinct processes related to the formation of micelles and superlattices. The methodology developed here holds promise for widespread applications in the in situ X-ray scattering observation of various chemical reaction processes, paving the way for the design and synthesis of complex functional materials.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Tapas Pal, Kalyanasis Sahu
Summary: This investigation explored the interaction between a triblock copolymer F127 micelle and a zwitterionic sulfobetaine surfactant SB12, primarily utilizing the excited-state proton transfer dynamics of a photoacid. The study found that SB12 achieved a more organized state with less hydration compared to the cationic surfactant, despite requiring a higher surfactant concentration. ESPT dynamics were slower in the F127-SB12 assembly, as evidenced by the slower change in the intensity ratio, and rotational dynamics were more retarded.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Biochemical Research Methods
Liang Peng, Huarong Peng, Wei Li, Dongyuan Zhao
Summary: Functional mesoporous carbonaceous nanomaterials with large pores have wide accessibility and can transport chemicals efficiently in various fields including biomedical applications, gas separation, catalysis, sensing, and energy storage and conversion. The assembly of monomicelles, composed of block copolymers/surfactants and precursor species, has been used to control the nanostructure and mesoporosity of carbonaceous nanomaterials. This method allows for a high degree of control over the final product's structure, making it possible to shape the nanomaterial into unique nanostructures that are otherwise difficult to synthesize using conventional templating methods.
Article
Chemistry, Physical
Fang Zhang, Shuang Zong, Yue Zhang, Haijun Lv, Xinying Liu, Juan Du, Aibing Chen
Summary: By utilizing mesoporous silica template to prepare N-doped HCS, direct carbon formation can be achieved, simplifying the preparation process. The thickness of the HCS shell, morphology, and surface properties can be adjusted, leading to high electrochemical performance as an active electrode material in supercapacitors.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Tobias Weller, Jana Timm, Leonie Deilmann, Tobias S. Doerr, Christopher Greve, Alexey S. Cherevan, Peter A. Beaucage, Ulrich B. Wiesner, Eva M. Herzig, Dominik Eder, Roland Marschall
Summary: The influence of periodic pore order on the photocatalytic performance of mesoporous photocatalysts in hydrogen evolution was investigated. It was found that long-range periodic order had no significant advantage compared to locally ordered continuous pore systems. On the contrary, nonperiodically ordered mesopores exhibited higher activity towards photocatalytic hydrogen evolution.
Article
Materials Science, Ceramics
Young Sunwoo, Gopalu Karunakaran, Eun-Bum Cho
Summary: Hollow mesoporous silica nanospheres were synthesized using pentablock copolymer templates under acidic aqueous conditions, with tetraethyl orthosilicate as the silica precursor. The structure could be tuned by using different length pentablock copolymer templates, resulting in variations in pore structure and morphology. The samples demonstrated hydrothermal stability and the formation of hollow mesopore structures under room temperature conditions.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Multidisciplinary
Yidong Xia, Jianfang Liu, Rahul Kancharla, Jiaoyan Li, Seyed M. Hatamlee, Gang Ren, Viktoriya Semeykina, Ahmed Hamed, Joshua J. Kane
Summary: To study the flow and transport properties of fluids for environmental research, such as geological subsurface energy storage or carbon capture, the detailed 3D morphology of monodispersed synthetic mesoporous silica nanoparticles (MSNs) with diameters below 50 nm was obtained using Individual Particle cryogenic transmission Electron Tomography (IPET) technique. The 3D reconstructed density-maps showed that the diameters of these MSNs varied from 35-46 nm, containing connected intraparticle pores with diameters of 2-20 nm and a mean diameter of 9.2 +/- 3 nm, which is comparable to the mean interparticle pore diameters in sintered agglomerate. The characterization of the pore shape and dimensions provides important information for estimating the flow and transport properties of fluids within the sintered agglomerate of MSNs and for modeling the atomic MSN structures needed for pore-fluid simulations.
NANOSCALE ADVANCES
(2023)
Article
Chemistry, Physical
Yuhao Peng, Shuhua Song, Fengqing Liu, Zhenghuan Yin, Yi Zhong, Xianfeng Yi, Anmin Zheng, Ferdi Schueth, Dong Gu
Summary: This study successfully synthesized a family of metal oxides with crystalline framework, hollow mesostructure, and ultrahigh surface area. By using a surface-casting method, a thin layer of metal oxides is formed on the nanopore surface, resulting in tubular, hollow sphere, or hollow vesicle structures. The obtained materials exhibit high exposure of active sites and retain the high surface area even after high-temperature treatment.
CHEMISTRY OF MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Keon-Woo Kim, Jun Kim, Chungryong Choi, Hyeong Keon Yoon, Myeong Cheol Go, Jaeyong Lee, Jin Kon Kim, Hyunho Seok, Taesung Kim, Kaibin Wu, Se Hyun Kim, Yong Min Kim, Jin Han Kwon, Hong Chul Moon
Summary: This study proposes a facile fabrication approach of mesoporous graphene (m-G) and demonstrates its excellent electrochemical behaviors and cycle stability in high-performance energy storage devices.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Review
Chemistry, Applied
B. Lebeau, M. Bonne, J. D. Comparot, J. Rousseau, L. Michelin, J. L. Blin, S. Brunet
Review
Chemistry, Applied
S. Todorova, J. L. Blin, A. Naydenov, B. Lebeau, H. Kolev, P. Gaudin, A. Dotzeva, R. Velinova, D. Filkova, I. Ivanova, L. Vidal, L. Michelin, L. Josien, K. Tenchev
Article
Chemistry, Applied
Claudia Violeta Cervantes-Martinez, Melanie Emo, Benedicte Lebeau, Maria-Jose Garcia-Celma, Marie-Jose Stebe, Jean-Luc Blin
MICROPOROUS AND MESOPOROUS MATERIALS
(2019)
Article
Chemistry, Applied
S. Todorova, J. L. Blin, A. Naydenov, B. Lebeau, D. Karashanova, H. Kolev, P. Gaudin, R. Velinova, L. Vidal, L. Michelin, L. Josien, D. Filkova, I. Ivanova, A. Dotzeva, K. Tenchev
Summary: The hierarchical macro-mesoporous silica (MMS) was used for catalyst support for oxidation reactions. The MMS was synthesized by the emulsions templating mechanism and modified separately or simultaneously with cobalt and manganese oxides. The modified materials showed partially blocked pores due to the oxides, with Co3O4 agglomerates and amorphous manganese oxide filling up the mesopores.
Article
Chemistry, Applied
Teddy Roy, Julie Rousseau, Antoine Daudin, Gerhard Pirngruber, Benedicte Lebeau, Jean-Luc Blin, Sylvette Brunet
Summary: Mesostructured titania as a support for the CoMoS active phase enhances HDS activity and DDS selectivity, with temperature treatment significantly affecting catalyst activity. Higher activities are obtained after treatment at 380 degrees C, correlating with higher specific surface area and a semicrystalline anatase framework in the mesostructured TiO2 material.
Article
Chemistry, Applied
Claudia Violeta Cervantes-Martinez, Marie-Jose Stebe, Melanie Emo, Benedicte Lebeau, Jean-Luc Blin
MICROPOROUS AND MESOPOROUS MATERIALS
(2020)
Article
Chemistry, Physical
Sylvette Brunet, Benedicte Lebeau, Issam Naboulsi, Laure Michelin, Jean Dominique Comparot, Claire Marichal, Severinne Rigolet, Magali Bonne, Jean-Luc Blin
Article
Chemistry, Applied
Florian Jonas, Benedicte Lebeau, Laure Michelin, Cedric Carteret, Ludovic Josien, Loic Vidal, Severinne Rigolet, Pierrick Gaudin, Jean-Luc Blin
Summary: The study investigates the effect of introducing heteroelements (Si, P, Al, Ge, Ga, and Zr) on the thermal stability of mesostructured titania prepared by the soft templating pathway. Results show that the addition of heteroelements delays the crystallization of amorphous titania into anatase, leading to a higher transition temperature and limited growth of anatase crystallites. Among the heteroelements considered, Si4+ and PO43- have the most beneficial effect on delaying the collapse of the mesostructure at higher temperatures.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Physical
Jean-Luc Blin, Laure Michelin, Benedicte Lebeau, Anton Naydenov, Ralitsa Velinova, Hristo Kolev, Pierrick Gaudin, Loic Vidal, Anna Dotzeva, Krasimir Tenchev, Silviya Todorova
Summary: New data on the structural and catalytic properties of mono-component cobalt and bi-component Co-Ce catalysts supported on SBA-15 are reported. Performance evaluation was conducted through combustion tests of methane, propane, and n-hexane, showing different catalytic activity and reducibility among these catalysts.
Article
Chemistry, Applied
Mohamed Chafik Bourkaib, Pierrick Gaudin, Francois Vibert, Yann Guiavarc'h, Stephane Delaunay, Xavier Framboisier, Catherine Humeau, Isabelle Chevalot, Jean-Luc Blin
Summary: This study investigated the influence of porosity and APTES functionalization of silica support on the immobilization and activities of aminoacylases. It was found that APTES functionalization improved enzyme loading and immobilization rate, but the catalytic performances varied depending on the type of silica material used for immobilization.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Physical
Anton Naydenov, Ralitsa Velinova, Jean-Luc Blin, Laure Michelin, Benedicte Lebeau, Hristo Kolev, Yordanka Karakirova, Daniela Karashanova, Loic Vidal, Anna Dotzeva, Krasimir Tenchev, Silviya Todorova
Summary: A propane combustion catalyst based on Mn and Ce supported by SBA-15 was synthesized and characterized. The catalyst showed catalytic activity in the combustion of methane, propane, and butane. The formation of difficult to reduce oxide phases led to lower catalytic activity.
Article
Chemistry, Multidisciplinary
Elodie Layan, Juhi Gupta, Isabelle Ly, Frederic Nallet, Ahmed Bentaleb, Eric Laurichesse, Renaud Vallee, Jean-Luc Blin, Benedicte Lebeu, Frederic Louerat, Mickael Le Bechec, Peter Moonen, Thierry Toupance, Thierry Pigot, Renal Backov
Summary: Three-dimensional photoactive self-standing porous materials have been synthesized through the integration of soft chemistry and colloids. These materials show promising applications in air purification and offer advantages in terms of volume and handling compared to powders. Additionally, the volumetric counterintuitive acting mode for light-induced reactions opens the door for further advanced applications in various fields.
Article
Mathematics, Interdisciplinary Applications
Gabriela Petcu, Gianina Dobrescu, Irina Atkinson, Madalina Ciobanu, Jean-Luc Blin, Viorica Parvulescu
Summary: In this study, Zeolite Y and Ti-containing Zeolite Y were synthesized using a hydrothermal seed-assisted method. The evolution of morphology, structure, and fractal dimensions during the zeolitization process was analyzed, revealing the mechanism of zeolite synthesis and the effect of titanium on structural properties.
FRACTAL AND FRACTIONAL
(2022)
Article
Nanoscience & Nanotechnology
Florian Jonas, Benedicte Lebeau, Stephane Siffert, Laure Michelin, Christophe Poupin, Renaud Cousin, Ludovic Josien, Loic Vidal, Martine Mallet, Pierrick Gaudin, Jean-Luc Blin
Summary: Mixed nanostructured ceria/zirconia oxides are prepared by different methods, showing significant impact on the structure and properties of the materials. The catalysts exhibit varying catalytic efficiencies depending on the preparation method, with nanostructured ZrO2 calcined at 480 degrees C and impregnated by 10 mol % CeO2 showing comparable efficiency to pure commercial ceria.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Benedicte Lebeau, Issam Naboulsi, Laure Michelin, Claire Marichal, Severinne Rigolet, Cedric Carteret, Sylvette Brunet, Magali Bonne, Jean-Luc Blin