Article
Nanoscience & Nanotechnology
Maria Pilar Yeste, Juan Carlos Hernandez-Garrido, Michael Uwe Kumke, Sarah Alvarado, Miguel Angel Cauqui, Jose Juan Calvino, Philipp-Alexander Primus
Summary: The use of a catalyst support for the design of nanoscale heterogeneous catalysts based on cerium oxide offers vast possibilities for future catalyst development. In this study, zirconia-supported ceria catalysts were synthesized and characterized. Experimental results show that the formation of reversible reactive pyrochlore structures can be achieved through low-temperature reduction-oxidation pretreatment, without altering the morphology of the catalyst.
ACS APPLIED NANO MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Xiao-Meng Lai, Qi Xiao, Chao Ma, Wei-Wei Wang, Chun-Jiang Jia
Summary: The 0.5Pt/3Ce-10Ti catalyst showed significant advantages in the water gas shift reaction. The heterostructured CeO2-TiO2 support effectively regulated the Pt status and influenced the adsorption ability of CO, resulting in improved reaction activity.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Chemical
Miki Inada, Junichi Hojo
Summary: In this study, CeO2-ZrO2 solid solution particles were prepared by a spray pyrolysis method, and the addition of organic additives was effective in increasing the specific surface area and forming a uniform solid solution structure, thereby enhancing the oxygen storage capacity.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Chemistry, Inorganic & Nuclear
Tianyuan Wang, Liang Lu, Chunwen Sun
Summary: A durable composite electrolyte membrane was prepared using oxygen vacancies to improve the degradation and safety of Li-O-2 batteries. The composite electrolyte demonstrated a wide electrochemical window, high ionic conductivity, and ionic transference number, resulting in long cycle stability and high coulombic efficiency.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Nanoscience & Nanotechnology
Kyoko Fujita, Hiroyuki Asakura, Saburo Hosokawa, Kentaro Teramura, Masaki Kobayashi, Koji Fujita, Tsunehiro Tanaka
Summary: The study revealed that Fe-doped gamma-Al2O3 can store and release oxygen reversibly during catalytic reactions, offering a new approach for developing oxygen storage materials without the need for rare metals.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Yongwei Chen, Sol Ahn, Mohammad Rasel Mian, Xingjie Wang, Qing Ma, Florencia A. Son, Lifeng Yang, Kaikai Ma, Xuan Zhang, Justin M. Notestein, Omar K. Farha
Summary: Solid supports play a crucial role in heterogeneous catalysis, but their specific effects remain challenging to elucidate. In this study, metal-organic frameworks (MOFs) with 8-connected Zr-6 nodes were used as supports to deposit molybdenum(VI) and investigate the effects of pore environment and topology on the resulting catalysts. It was found that by modulating the chemical environments of the deposited molybdenum species, the catalytic activity and structure can be changed. This work demonstrates the importance of using MOF supports to construct heterogeneous catalysts and elucidate structure-activity relationships in reactions.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Mi Yoo, Eunji Kang, Hyunwoo Ha, Jieun Yun, Hyuk Choi, Ju Hyeok Lee, Tae Jun Kim, Jiho Min, Jin-Seok Choi, Kug-Seung Lee, Namgee Jung, Sungtak Kim, Chunjoong Kim, Young-Sang Yu, Hyun You Kim
Summary: We proposed an interface-engineered oxide-supported Pt nanoparticle-based catalyst, which exhibited improved low-temperature activity toward CO oxidation. The CeOx-TiO2 hybrid oxide support was synthesized by wet-impregnating 1 wt % Ce on TiO2, and the Pt/CeOx-TiO2 catalyst was prepared by impregnating 2 wt % Pt on the CeOx-TiO2 support. The formation of Pt-CeOx-TiO2 interfaces opened up the interface-mediated Mars-van Krevelen CO oxidation pathway, leading to additional interfacial reaction sites for CO oxidation. The specific reaction rate of Pt/CeOx-TiO2 for CO oxidation was increased by 3.2 times compared with Pt/TiO2 at 140 degrees C.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Applied
Zhiyu Zhou, Michael P. Harold, Dan Luss
Summary: Simultaneous conversion of NO, CO and C3H6 was carried out on washcoated monoliths containing oxygen storage material-promoted mixed Platinum group metals to evaluate the promotion effects and identify the best architecture. PGM supported directly on the OSM was found to be the best design for one type of OSM, while a dual-layer architecture outperformed the MFO-supported PGM catalyst. Enhancement in conversion efficiency was achieved with the dual-layer PGM-MFO catalyst due to a direct catalytic contribution from the spinel. The study provides insights into the benefits of OSM and guidance for optimizing multi-component PGM + OSM catalyst composition and architecture.
Article
Chemistry, Physical
Natalia Diaz Montenegro, William S. Epling
Summary: The methane oxidation and oxygen storage capacity of a bilayer Pt/Pd/Al2O3 over a Mn0.5Fe2.5O4 spinel catalyst under periodic conditions were studied before and after SO2 exposure. Improvement in CH4 oxidation conversion was observed under periodic conditions compared to steady-state conditions before sulfur exposure. After sulfur exposure, a loss in CH4 oxidation performance and oxygen storage capacity of the spinel material was observed, but regeneration methods under periodic conditions led to improved CH4 conversion.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Multidisciplinary Sciences
Jie Lei, Xiao-Xiang Fan, Ting Liu, Pan Xu, Qing Hou, Ke Li, Ru-Ming Yuan, Ming-Sen Zheng, Quan-Feng Dong, Jia-Jia Chen
Summary: The authors propose a polyoxometalate/multilayer graphene composite as a bifunctional electrocatalyst to improve the performance of Li-S batteries. The composite demonstrates efficient polysulfides adsorption and reduced activation energy for polysulfides conversion, making it an effective electrocatalyst. In experimental tests, the composite exhibits good cycling stability and high specific capacity in Li-S batteries.
NATURE COMMUNICATIONS
(2022)
Article
Engineering, Environmental
Yuanqing Ding, Yanyan Jia, Mingxiang Jiang, Yanglong Guo, Yun Guo, Li Wang, Qingping Ke, Minh Ngoc Ha, Sheng Dai, Wangcheng Zhan
Summary: The structure of CeO2-ZrO2 mixed oxides support significantly affects the catalytic activity of Pd/CZ catalysts in methane combustion, with CZ oxides featuring a two-phase composite structure exhibiting higher oxygen storage capacity and mobility, positively impacting the performance of Pd/CZ catalysts.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Materials Science, Ceramics
M. Morales, M. A. Laguna-Bercero, E. Jimenez-Pique
Summary: This study investigates the processing of the anode support and the anode deactivation caused by carbon deposition in Direct Methane Solid Oxide Fuel Cells (SOFCs) operated under catalytic partial oxidation (CPOX) conditions. Anode-supported SOFCs based on gadolinium-doped ceria (GDC) electrolyte and NiO-GDC anode support were fabricated by the gel-casting method. The suitable support material was found to be 550 +/- 50 μm thick with 10 wt% pore former, and it showed good performance under stoichiometric conditions of CPOX. The best electrochemical stability was achieved at a CH4/O-2 ratio of 2.5, with no carbon deposition and reduced nickel re-oxidation.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Physical
Martinus Dewa, Mohamed A. Elharati, A. Mohammed Hussain, Yohei Miura, Dong Song, Yosuke Fukuyama, Yoshihisa Furuya, Nilesh Dale, Xianghui Zhang, Oscar G. Marin-Flores, Di Wu, M. Grant Norton, Su Ha
Summary: In this study, a Rhodium-Ceria-Zirconia (Rh/CZ) internal reforming catalyst layer was introduced to a high-performance metal-supported solid oxide fuel cell (MS-SOFC). The catalyst layer improved the performance and stability of the ethanol fuel cell by enhancing internal reforming activity.
JOURNAL OF POWER SOURCES
(2022)
Article
Nanoscience & Nanotechnology
Liang Dan, Hui Wang, Xiaobao Yang, Jiangwen Liu, Liuzhang Ouyang, Min Zhu
Summary: This study demonstrates the significant improvement of hydrogen sorption performances of MgH2 by synthesizing Nb-doped TiO2 solid-solution-type catalysts. The catalyzed MgH2 is able to absorb 5% of H2 at room temperature for 20 seconds, release 6% of H2 at 225 degrees C within 12 minutes, and achieve complete dehydrogenation at 150 degrees C under a dynamic vacuum atmosphere. The success of solid solution-type catalysts in MgH2 provides a demonstration and inspiration for the development of high-performance catalysts and solid-state hydrogen storage materials.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Fei Jin, Chao Xu, Hangyu Yu, Xin Xia, Feng Ye, Xin Li, Xiaoze Du, Yongping Yang
Summary: The redox cycle of doped CaMnO3-delta is a cost-effective way for thermochemical energy storage in concentrating solar power. Co-doped CaMnO3-delta perovskites have been proposed as promising TCES materials, showing enhanced redox capacity and high TCES density. Effective Co doping increases the valence states of B-site cations in perovskite and facilitates the diffusion of lattice oxygen atoms. High cooling rates may deteriorate the microstructure of the material and affect heat release completeness.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Kumari Sushmita, Taishwarya V. Menon, Shubham Sharma, Ashutosh C. Abhyankar, Giridhar Madras, Suryasarathi Bose
JOURNAL OF PHYSICAL CHEMISTRY C
(2019)
Article
Chemistry, Physical
K. C. Pitchaiah, Neha Lamba, J. Deepitha, P. K. Mohapatra, Giridhar Madras, N. Sivaraman
JOURNAL OF SUPERCRITICAL FLUIDS
(2019)
Article
Energy & Fuels
Neha Lamba, Rimzhim Gupta, Jayant M. Modak, Giridhar Madras
Article
Chemistry, Physical
Ch Anil, Giridhar Madras
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2020)
Article
Polymer Science
Amanuel Gebrekrstos, Goutam Prasanna Kar, Giridhar Madras, Ashok Misra, Suryasarathi Bose
Article
Chemistry, Multidisciplinary
Paresh Kumar Samantaray, Sonika Baloda, Giridhar Madras, Suryasarathi Bose
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2019)
Article
Engineering, Environmental
Aishwarya V. Menon, Balamati Choudhury, Giridhar Madras, Suryasarathi Bose
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Chemistry, Physical
Ch Anil, Jayant M. Modak, Giridhar Madras
MOLECULAR CATALYSIS
(2020)
Review
Chemistry, Multidisciplinary
Kumari Sushmita, Giridhar Madras, Suryasarathi Bose
Article
Engineering, Environmental
Bhanupriya Boruah, Paresh Kumar Samantaray, Giridhar Madras, Jayant M. Modak, Suryasarathi Bose
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Energy & Fuels
V. Mani Rathnam, Jayant M. Modak, Giridhar Madras
Article
Materials Science, Multidisciplinary
J. Sakthi Swarrup, Ranjan Ganguli, Giridhar Madras
Summary: This paper conducts an in-depth analysis of IPMC as sensors, revealing a correlation between IPMC metal content and water uptake. The study shows that introducing mass to the end of a high-frequency IPMC sensor improves sensing behavior, while low-frequency IPMC sensors exhibit a reverse trend. Gold coating on a high-frequency IPMC sensor decreases resonant frequency, and pre-bending with optimal mass loading benefits sensing voltage on the Au-coated HFI sensor.
JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES
(2021)
Article
Chemistry, Applied
Satyapaul A. Singh, Giridhar Madras, Inkollu Sreedhar
Summary: Transition metal substituted Co3O4-ZrO(2) catalysts (NiCZ, CuCZ and FeCZ) were synthesized by PEG assisted sonochemical synthesis and showed excellent catalytic activity and stability for lean methane combustion. The presence of SO(2) in the reactant feed significantly inhibited the catalytic activity, although FeCZ exhibited superior performance compared to NiCZ and CuCZ. Characterization studies using XRD, XPS, TEM and H-2-TPR revealed structural and reducibility properties of the catalysts.
TOPICS IN CATALYSIS
(2021)
Article
Chemistry, Multidisciplinary
Kumari Sushmita, Petr Formanek, Dieter Fischer, Petra Potschke, Giridhar Madras, Suryasarathi Bose
Summary: The study developed two ultrathin multilayered assemblies to address electromagnetic pollution, with enhanced structural properties and interference shielding. By interfacially stitching PC and PVDF components with a PMMA sandwich layer, the challenge of their immiscibility was overcome, improving the overall performance of the materials.
NANOSCALE ADVANCES
(2021)
Article
Chemistry, Multidisciplinary
Rimzhim Gupta, Jayant M. Modak, Giridhar Madras
NANOSCALE ADVANCES
(2019)
Article
Chemistry, Physical
Bolun Yu, Denan Li, Qianqian Zhu, Shufan Yao, Lifeng Zhang, Yanshuo Li, Zhenxin Zhang
Summary: This study successfully improved the catalytic activity of a zeolitic octahedral metal oxide by incorporating a single zinc species into its micropore. The zinc incorporation achieved a high ethane conversion rate and ethylene selectivity. Mechanism study showed that the isolated zinc site played a crucial role in activating oxygen and ethane, as well as stabilizing intermediates and transition states.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Ruoqi Liu, Hao Fei, Jian Wang, Ting Guo, Fangyang Liu, Zhuangzhi Wu, Dezhi Wang
Summary: This work successfully synthesized a high-performing S-enriched MoS2 catalyst for electrocatalytic nitrogen reduction reaction (NRR), demonstrating high activity and selectivity. The synergistic effect of the 1T phase and bridging S22- species was shown to play a positive role in NRR performances, and DFT calculations revealed the mechanism behind the improved performance.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Pan Xia, Lele Zhao, Xi Chen, Zhihong Ye, Zhihong Zheng, Qiang He, Ignasi Sires
Summary: This study presents a modified gas-diffusion electrode (GDE) for highly efficient and stable H2O2 electrosynthesis by using trace polymethylhydrosiloxane (PMHS). DFT calculations provide an in-depth understanding of the roles of PMHS functional groups.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Kwangchol Ri, Songsik Pak, Dunyu Sun, Qiang Zhong, Shaogui Yang, Songil Sin, Leliang Wu, Yue Sun, Hui Cao, Chunxiao Han, Chenmin Xu, Yazi Liu, Huan He, Shiyin Li, Cheng Sun
Summary: Different B-doped rGO catalysts were synthesized and their 2e- oxygen reduction reaction (ORR) performance was investigated. It was found that the 2e- ORR selectivity of B-doped rGO was influenced by the B content and oxygen mass transfer conditions. The synthesized catalyst exhibited high 2e- ORR selectivity and was capable of degrading organic pollutants continuously.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Li Lv, Lin Lei, Qi-Wen Chen, Cheng-Li Yin, Huiqing Fan, Jian-Ping Zhou
Summary: Monoclinic phase La2Ti2O7 and orthorhombic phase Bi4Ti3O12 are widely used in photocatalysis due to their layered crystal structure. The electronic structures of these phases play a crucial role in their photocatalytic activity. Heat treatment in a nitrogen atmosphere introduces more oxygen vacancies into the S-scheme heterojunction, leading to enhanced NO removal efficiency.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Choe Earn Choong, Minhee Kim, Jun Sup Lim, Young June Hong, Geon Joon Lee, Keun Hwa Chae, In Wook Nah, Yeomin Yoon, Eun Ha Choi, Min Jang
Summary: In this study, the synergistic effect between argon-plasma-system (AP) and catalysts in promoting the production of reactive species for water remediation was investigated. By altering the oxygen vacancies concentration of CeO2/Bi2O3 catalyst, the production of hydrated electrons was stimulated for PFOA removal. The results showed that the built-in electric field in the Bi/Ce0.43 interface enhanced electron migration and eaq- generation, leading to improved PFOA removal efficiency.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Yushan Wu, Di Xu, Yanfei Xu, Xin Tian, Mingyue Ding
Summary: Efficient synthesis of primary amines from carbonyl compounds was achieved via reductive amination using Ru@NC-Al2O3 as a catalyst, exhibiting high activity and selectivity under mild conditions.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Yilan Jiang, Peifang Wang, Tingyue Chen, Keyi Gao, Yiran Xiong, Yin Lu, Dionysios D. Dionysiou, Dawei Wang
Summary: By controlling the content of Co and Ni in Co1-xNixFe2O4, the production of O-1(2) from H2O2 can be regulated. NiFe2O4, with the lowest lattice distortion degree, can efficiently produce O-1(2) as the dominant reactive oxygen species. The system also exhibits significant resistance to water matrix interference.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Shuai Feng, Donglian Li, Hao Dong, Song Xie, Yaping Miao, Xuming Zhang, Biao Gao, Paul K. Chu, Xiang Peng
Summary: In this study, MoO2/Mo2N heterostructures were prepared by regulating the coordination of Mo atoms. The electrocatalyst exhibits high current density and excellent stability for hydrogen evolution reaction.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Jia-Cheng E. Yang, Min -Ping Zhu, Daqin Guan, Baoling Yuan, Darren Delai Sun, Chenghua Sun, Ming-Lai Fu
Summary: This study successfully modulated the electron configuration and spin state of millimetric metal catalysts by adjusting the support curvature radius. The electronic structure-oriented spin catalysis was found to affect the degradation of pollutants, providing new insights for the design and production of highly active, reusable, and stable catalysts.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Tao Zhong, Su Tang, Wenbin Huang, Wei Liu, Huinan Zhao, Lingling Hu, Shuanghong Tian, Chun He
Summary: In this study, a highly efficient photocatalyst for the elimination of CH3SH was developed by engineering different crystal facets and coupling them with PHI. Cu (111)/PHI exhibited the highest elimination efficiency and showed good stability and reusability. The enhanced surface electron pump effect and effective adsorption mechanisms were revealed through comprehensive characterizations and DFT calculations.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Feifei Yang, Tianyu Zhang, Jiankang Zhao, Wei Zhou, Nicole J. Libretto, Jeffrey T. Miller
Summary: A Ni3Sn intermetallic nano particle was found to have geometrically isolated Ni sites that could selectively cleave C-O bonds in biomass derivatives. This nano particle showed high activity and selectivity towards 2-methylfuran, unlike Ni nanoparticles that produced other unwanted products derived from the aromatic rings.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
Article
Chemistry, Physical
Lulu Qiao, Di Liu, Anquan Zhu, Jinxian Feng, Pengfei Zhou, Chunfa Liu, Kar Wei Ng, Hui Pan
Summary: This study reveals that surface evolution plays a crucial role in enhancing the electrocatalytic performance of transition metal oxides for electrochemical nitrate reduction reaction (e-NO3RR). Incorporating nickel into Co3O4 can promote surface reconstruction and improve the adsorption of intermediates and reduce energy barriers, leading to enhanced catalytic performance. The reconstructed cobalt-nickel hydroxides (CoyNi1_y(OH)2) on the catalyst's surface serve as the active phase.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
Article
Chemistry, Physical
Xinyu Song, Yang Shi, Zelin Wu, Bingkun Huang, Xinhao Wang, Heng Zhang, Peng Zhou, Wen Liu, Zhicheng Pan, Zhaokun Xiong, Bo Lai
Summary: This study explores the discriminative activities and mechanisms for activation of O-O bond in peroxy compounds via single-atom catalysts (SACs) with higher coordination numbers (M-N5). The atomic catalyst (Fe-SAC) with Fe-N5 as the active center was constructed, effectively activating peroxymonosulfate (PMS), peroxydisulfate (PDS), and hydrogen peroxide (H2O2). The study demonstrates the degradation efficiencies of acyclovir are related to the O-O bond length in different peroxy compounds, and reveals the discriminative mechanisms for activation of O-O bond in different Fenton-like systems.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
Article
Chemistry, Physical
Yangzhuo He, Hong Qin, Ziwei Wang, Han Wang, Yuan Zhu, Chengyun Zhou, Ying Zeng, Yicheng Li, Piao Xu, Guangming Zeng
Summary: A dual-metal-organic framework (MOF) assisted strategy was proposed to construct a magnetic Fe-Mn oxycarbide anchored on N-doped carbon for peroxymonosulfate (PMS) activation. The FeMn@NC-800 catalyst exhibited superior activity with almost 100% degradation of sulfamethazine (SMZ) in 30 minutes. The study provided insights for the rational design of high-performance heterogeneous catalysts and proposed a novel nonradical-based catalytic oxidation for environmental cleaning.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
