Article
Chemistry, Physical
Qijun Fu, Sheng Wang, Ting Wang, Defeng Xing, Xu Yue, Mingzhe Wang, Shudong Wang
Summary: By comparing the performance and reaction mechanisms of Pt/CZ11 and Pt/Al2O3 catalysts, it was found that Pt/CZ11 exhibited higher activity and combustion efficiency, which could be attributed to the strong interaction between Pt and Ce-Zr solid solution and the enrichment of surface active oxygen and oxygen vacancy.
JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Physical
Quanquan Shi, Yifei Zhang, Zhiwen Li, Zhongkang Han, Liangliang Xu, Alfons Baiker, Gao Li
Summary: In this study, two manganese-ceria solid solutions were prepared, and it was found that MnCeO(111) catalyst exhibited better catalytic performance in NO reduction reaction compared to MnCeO(100) catalyst. The crucial roles of oxygen vacancy defects and Mn dopant were revealed through experimental and theoretical investigations.
Article
Chemistry, Physical
Quanquan Shi, Yifei Zhang, Zhiwen Li, Zhongkang Han, Liangliang Xu, Alfons Baiker, Gao Li
Summary: In this study, two manganese-ceria solid solutions with preferentially exposed (111) and (100) facets of ceria were prepared. The incorporation of Mn dopant enhanced the catalytic performance, with the (111) catalyst outperforming the (100) counterpart. The enhanced catalytic performance can be attributed to the Mn-O-L(Vo)-Mn-O-L(Vo)-Ce connectivities, which facilitate the formation of surface oxygen vacancies and promote the reduction of NO.
Article
Energy & Fuels
Shumei Chen, Chao Miao, Lixing Liang, Jing Ouyang
Summary: This paper reports the synthesis and CO2 methanation performance of Ni/CeO2-ZrO2 solid solutions assembled on different clay minerals. The Ni-CZA catalyst assembled on attapulgite showed the highest CO2 conversion and excellent stability due to its excellent adsorption performance and large specific surface area.
Article
Chemistry, Physical
P. H. Tu, M. Sakamoto, K. Sasaki, Y. Shiratori
Summary: Using a two-step hydrothermal process, flowerlike Ce0.5Zr0.5O2 with high oxygen storage capacity was synthesized to prepare paper-structured catalysts. The catalysts exhibited excellent catalytic performance for dry reforming of methane due to the anti-sintering effect of Ni and the high oxygen storage capacity.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(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, Physical
Zhenpan Chen, Qingqing Jiang, Hongyu An, Juan Zhang, Shuoqi Hao, Xinju Li, Lili Cai, Wenguang Yu, Kuiyi You, Xuefeng Zhu, Can Li
Summary: Ceria substituted with zirconium (Ce1-xZrxO2) is a promising material with great oxygen storage capacity and potential fuel production in thermochemical CO2/H2O splitting cycles. However, the fuel release rate of Ce1-xZrxO2 solid solution is relatively slow. In this study, noble metal catalysts (RuOx, PtOx, and IrOx) are used to enhance the CO release rate of Ce-0.85Zr0.15O2-based two-step thermochemical CO2 splitting, resulting in increased solar-to-fuel energy conversion efficiency.
Article
Energy & Fuels
Shinta Miyazaki, Zirui Li, Lingcong Li, Takashi Toyao, Yuta Nakasaka, Yasushi Nakajima, Ken-ichi Shimizu, Zen Maeno
Summary: In this study, Ni-modified tungstate zirconia (Ni/WO3/ZrO2) was developed as an effective material for chemical looping dry reforming of methane (CL-DRM) under isothermal conditions. The performance of Ni/WO3/ZrO2 was strongly influenced by the loading amount of WO3, with the optimal amount being 10.0 wt%. Increasing the loading amount to 30.0 wt% resulted in the formation of crystalline WO3 species and diminished the CL-DRM performance. Comprehensive characterization studies revealed that surface dispersed tungstate species were reduced by CH4 and reoxidized by CO2, leading to efficient CL-DRM.
Article
Chemistry, Multidisciplinary
J. M. Serra, M. Balaguer, J. Santos-Blasco, J. F. Borras-Morell, B. Garcia-Banos, P. Plaza-Gonzalez, D. Catalan-Martinez, F. Penaranda-Foix, A. Dominguez, L. Navarrete, J. M. Catala-Civera
Summary: This study investigates microwave-induced redox transformations on solid-state ion-conducting materials, and finds that reduction is triggered at a specific temperature leading to a significant increase in electric conductivity. The effectiveness of the redox process is influenced by material composition, gas environment, and microwave power intensity, with fine-grained materials showing amplified effects.
MATERIALS HORIZONS
(2023)
Article
Energy & Fuels
Seol Hee Oh, Hyun-Kyu Kim, Jason Kim, Yeong-Cheol Kim, Sun-Young Park, Sungeun Yang, Ho-Il Ji, Kyung Joong Yoon, Ji-Won Son, Jong-Ho Lee
Summary: Solid solution CeO2-ZrO2 has been widely used in three-way catalysts due to its high oxygen storage capacity. However, the stability of CeO2-ZrO2 has been a controversial issue. This study demonstrates theoretically and experimentally that a Ce0.75Zr0.25O2 solid solution will completely separate into CeO2 and ZrO2 phases due to its inherent thermodynamic instability. The enhanced cation diffusion in a reducing atmosphere is responsible for the inherent stability problem and increased phase separation kinetics of CZO materials.
JOURNAL OF PHYSICS-ENERGY
(2022)
Article
Chemistry, Applied
Fabio Salomone, Enrico Sartoretti, Sabrina Ballauri, Micaela Castellino, Chiara Novara, Fabrizio Giorgis, Raffaele Pirone, Samir Bensaid
Summary: In recent decades, efforts have been made to reduce CO2 emissions and convert it into useful chemicals and liquid fuels like methanol. This study focuses on the development of catalysts for hydrogenating CO2 to methanol, where In2O3-based catalysts have shown promising results. The effects of CeO2 and ZrO2 on the catalytic performance were investigated, and it was found that ZrO2 enhanced the specific activity and stability of the catalysts, while the addition of CeO2 did not have a beneficial effect.
Article
Chemistry, Physical
Zhongliao Wang, Linxi Wang, Bei Cheng, Huogen Yu, Jiaguo Yu
Summary: The performance of current photocatalysts is limited by charge recombination and slow H-2 evolution, but a Pt nanocluster-modified ZnCdS solid solution can address these issues effectively by improving charge separation and accelerating H-2 evolution kinetics. As a result, the production rate of H-2 and efficiency of furfuralcohol oxidation can be significantly enhanced.
Review
Chemistry, Multidisciplinary
James M. Mayer
Summary: This Perspective argues that most redox reactions at an interface with a protic solution involve net proton-coupled electron transfer. The view contrasts with the traditional electron-transfer focused view of redox reactions at semiconductors, but redox processes at metal surfaces are often described as PCET. The importance of surface-H bond dissociation free energy as the preeminent energetic parameter and its conceptual equivalents in understanding thermodynamics of PCET at interfaces is emphasized.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Charlotte Croise, Remy Pointecouteau, Joudia Akil, Alain Demourgues, Nicolas Bion, Xavier Courtois, Fabien Can
Summary: The study found that partial substitution of zirconium for praseodymium in a ceria-zirconia support can enhance the support reducibility, but impregnation of niobium and tungsten inhibits the redox behaviors. Additionally, niobium and tungsten provide acidic sites while praseodymium inhibits ammonia storage and decreases deNO(x) performances. The various redox and acidic behaviors observed in the studied materials demonstrate a strong competition between NOx SCR and NH3 oxidation pathways.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Applied
J. C. Martinez-Munuera, V. M. Serrano-Martinez, J. Gimenez-Manogil, M. P. Yeste, A. Garcia-Garcia
Summary: This research aimed to study the nature of active sites and synergies in copper/ceria-zirconia formulations for low temperature CO oxidation by creating copper entities with different properties. Results showed that increasing copper loading up to 2% led to gradual improvements in activity and reducibility. The preparation method was identified as a critical variable in catalytic performance, with the IWI method showing superior results.
Article
Chemistry, Physical
Qiang Liu, Jie Ding, Ruonan Wang, Qin Zhong
Summary: The FeZnK/SAPO-G catalyst, prepared through a granule-stacking method, shows excellent catalytic activity in terms of high CO2 conversion and favorable light olefin selectivity. The integrated manner of FeZnK and SAPO-34 has a significant impact on the catalyst performance.
Article
Engineering, Environmental
Guojun Li, Zheng Lian, Zhengwei Wan, Zhinian Liu, Jingwen Qian, Yue Deng, Shule Zhang, Qin Zhong
Summary: This study addresses the limitations of photocatalytic NO oxidation activity by constructing Ni(OH)2-decorated NiTiO3 Z-scheme heterojunctions. The introduction of Ni(OH)2 enhances the adsorption capacity of oxygen and nitrogen oxides, leading to improved photocatalytic performance. This research offers a promising approach to design efficient NiTiO3-based photocatalysts for environmental remediation.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Xiaofang Shang, Guojun Li, Ruonan Wang, Tian Xie, Jie Ding, Qin Zhong
Summary: This study combines efficient charge transfer pathway and precision loading to construct a novel Pd-Cu/TiO2 photocatalyst with high selectivity for methanol production. Loading Pd on Cu species instead of TiO2 facilitates the concentration of electrons on Cu, and the ion exchange method for Pd loading creates more oxygen vacancies, leading to improved visible light absorption and charge separation. In situ FT-IR testing reveals the evolution from CO2 to CH3OH and the critical intermediates involved. This work provides insights into precision loading of Pd and presents a novel design for photocatalysts.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Mengyu Li, Yiqing Zeng, Xuelin Li, Shule Zhang, Jing Liu, Qin Zhong
Summary: A novel surface carbon-oxygen-groups grafted TiO2 catalyst was developed by calcining the solid mixture of polyethylene glycol and TiO2, which exhibited excellent NH3-SCR denitration activity with NOx conversion up to 80% above 210 degrees Celsius. The superior activity of the catalyst was attributed to the formation of lactone and carboxyl groups, promoting the adsorption and activation of NO and NH3 species. NH3 also inhibited the decomposition of carbonyl groups, resulting in good long-term stability of the catalyst.
Article
Materials Science, Ceramics
Liya Cheng, Qiuqiu Lyu, Zongxun Li, Yang Liu, Chao Jin, Na Xu, Qin Zhong, Tenglong Zhu
Summary: Modifying the thin film electrolyte improves the performance, reliability, and durability of solid oxide fuel cells (SOFCs).
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Article
Chemistry, Physical
Yan Yang, Shipeng Wan, Si Li, Ruonan Wang, Man Ou, Biming Liu, Qin Zhong
Summary: In this study, a NiFeOx co-catalyst decorated N-incorporated BiVO4 photoanode (N-BiVO4/NiFeOx) was developed, which not only improves charge transport efficiency but also effectively suppresses photo-corrosion, exhibiting excellent chemical stability, efficient water oxidation, tetracycline hydrochloride (TCH) degradation, and H2 production performance. This work offers a promising avenue for designing high-performance photoanodes and provides new insights into antibiotic wastewater treatment.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Ruonan Wang, Zhen Wang, Xiaofang Shang, Yan Yang, Jie Ding, Qin Zhong
Summary: Here, a new photocatalyst for CO2 photoreduction reaction in water media is designed by decorating NH2-MIL-125 with NiTiLDH. The optimized photocatalyst exhibits high electron yields and CO selectivity with an S-scheme electron transfer mode. The electron acceptor NTL plays a crucial role in electron transfer and CO2 fixation, while NM facilitates H2O oxidation. Furthermore, the study provides valuable insights into the reaction mechanism and the enhancement mechanism of the CO2 photoreduction reaction.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Organic
Hua-Xing Hu, Xin-Ru Ma, Qin Zhong, Qiang Chen, Jian Zhao
Summary: A novel homoallenylboration reaction has been developed for the efficient and practical synthesis of valuable homoallenyl alcohols. The reaction involves the activation of 2-pinacolateboryl 1,3-butadienes followed by the addition of aldehydes to give the desired products with high yields and excellent regioselectivity. Notably, this reaction can also be employed for the synthesis of homoallenyl tertiary alcohols.
ORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Physical
Tian Xie, Jie Ding, Xiaofang Shang, Xiaoqiao Zhang, Qin Zhong
Summary: The composite catalysts composed of indium oxide loaded with zirconia (In2O3/ZrO2) and silicoaluminophosphate molecular sieve number 34 (SAPO-34) can promote CO2 hydrogenation and improve the selectivity of the target products. The granule integration manner plays a crucial role in enhancing the tandem reaction and catalytic performance.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Yiwen Zhang, Xifeng Zhang, Yuting Li, Juan Wang, Sibudjing Kawi, Qin Zhong
Summary: In this study, carbon aerogel with double doping and loaded with FeCo alloy nanoparticles (NSCA/FeCo) was prepared as cathodes for rechargeable liquid flow and flexible Zn-air batteries. NSCA/FeCo exhibited excellent bifunctional catalytic performance for ORR and OER, with a half-wave potential of +0.85 V and an overpotential of 335 mV at a current density of 10 mA.cm(-2). The assembled ZABs showed excellent performance with high power density, specific capacity, and cycle stability.
Article
Engineering, Chemical
SuSu Liu, Zheng Lian, Mingjia Zhang, Shule Zhang, Qin Zhong
Summary: A novel strategy combining oxidation and wet flue gas denitrification technology was proposed to remove NOx pollutant from sintering flue gases. The addition of CuCl2 as an additive into the sulfite solution enhanced the removal of NO2. The formation of CuCl during the reaction of CuCl2 and SO32- was found to be more effective in removing NO2. The cyclic use of CuCl2 was confirmed by the mutual transformation between CuCl and Cu2+ substance.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Xinyao Dong, Zhihui Yao, Yuting Li, Juan Wang, Qin Zhong
Summary: In this study, a high-performance and low-cost bifunctional catalyst BZIF-C@LDH was successfully designed for oxygen reduction and oxygen evolution reactions in rechargeable Zn-air batteries (RZABs). The catalyst showed excellent performance and achieved a high energy density, which is close to the theoretical energy density when compared to commercial catalysts.
Article
Green & Sustainable Science & Technology
Wenhua Li, Shule Zhang, Fengye Guo, Run Yu, Qianqiao Chen, Qin Zhong
Summary: Designing and constructing a delicate structure is an effective strategy to ensure the electrocatalytic stability of catalysts in quantum dot sensitized solar cells. In this study, ultrafine Co4N nanoparticles are encapsulated in a fish-scale-like N-doped carbon framework (Co4N@NC) to improve the stability and performance of the catalyst. The construction of this composite structure increases contact with the electrolyte, enhances electron conduction, and boosts the polysulfide reduction performance.
MATERIALS TODAY SUSTAINABILITY
(2023)
Article
Energy & Fuels
Haiwei Guo, Tianxi Zhang, Weihua Ma, Shuwen Cheng, Jie Ding, Qin Zhong, Sibudjing Kawi
Summary: Photocatalysis technology is a promising strategy to convert CO2 into fuels and mitigate the greenhouse effect and energy crisis. In this study, the Z-scheme Ag/UiO-66@g-C3N4 composites showed improved CO2 photoreduction activity due to their increased specific surface area, strong redox capacity, rapid separation of photoinduced h+/e- pairs, and fast transfer of e-. The CH3OH and CO evolution rates of the composites were 3.09 and 2.40 times higher than those of g-C3N4, respectively. The Quantum yield (QY) of CO and CH3OH for the composites were 0.0217% and 0.0986%. The Ag NPs acted as e- mediator, promoting charge separation, transport, and CO2 reduction ability. This study not only presents a simple method to prepare ternary composites but also demonstrates their efficient photocatalytic CO2 conversion to methanol and CO.
Article
Chemistry, Physical
Yiwen Zhang, Xifeng Zhang, Yuting Li, Juan Wang, Sibudjing Kawi, Qin Zhong
Summary: A carbon aerogel with honeycomb-like structure, N and S double doping and loaded with FeCo alloy nanoparticles (NSCA/FeCo) was successfully prepared as cathodes for rechargeable liquid flow and two-dimensional flexible Zn-air batteries (ZABs). NSCA/FeCo showed excellent bifunctional catalytic performance due to its effective ORR/OER active sites and small charge/mass transport barrier. The assembled ZABs exhibited outstanding performance and stability.
