Article
Environmental Sciences
J. Fragoso, M. A. Oliva, L. Camacho, M. Cruz-Yusta, G. de Miguel, F. Martin, A. Pastor, I Pavlovic, L. Sanchez
Summary: The ability of ZnCuCr-CO3 LDHs as highly efficient DeNOx photocatalysts was studied, showing favorable conversion efficiency and extraordinary selectivity. The addition of copper ions altered the optical properties of LDHs, facilitating the generation and mobility of e(-)/h(+) charge carriers and enhancing the production of, center dot O-2(-) and, center dot OH.
Review
Chemistry, Multidisciplinary
V. K. Ameena Shirin, Renu Sankar, Asha P. Johnson, H. V. Gangadharappa, K. Pramod
Summary: Layered double hydroxides (LDHs) are nanomaterials with high surface-to-volume ratio, suitable for drug delivery applications. Interlayered drugs can be released in a sustained manner, reducing drug administration frequency.
JOURNAL OF CONTROLLED RELEASE
(2021)
Article
Environmental Sciences
Sonchai Intachai, Panita Sumanatrakul, Nithima Khaorapapong
Summary: The fabrication of zinc sulfide (ZnS) and cadmium sulfide (CdS) hybrids was achieved by sulfidization of Zn(II) or Cd(II) adsorbed in dodecylsulfate modified CoAl-layered double hydroxide. The resulting nanocrystals of ZnS or CdS showed improved surface area and spectroscopic properties. These nanohybrids demonstrated high adsorption capacity and efficient photocatalytic degradation of Congo red dye in wastewater.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Review
Chemistry, Physical
Sultan Akdag, Ramazan Keyikoglu, Ahmet Karagunduz, Bulent Keskinler, Alireza Khataee, Yeojoon Yoon
Summary: Anthropogenic boron discharge poses a threat to ecosystem health and water quality. This paper presents the use of layered double hydroxides (LDH) for the removal and recovery of boron species from water. The main factors affecting boron removal and the potential of LDH for boron recovery are outlined. LDH has the advantage of being able to recover and reuse extracted boron.
APPLIED CLAY SCIENCE
(2023)
Article
Chemistry, Physical
Agron Hoxha, Natalia Karpukhina, David G. Gillam, Andy J. Bushby, Mangala P. Patel
Summary: It has been widely reported that preventing early-stage carious lesions requires sustained low-level fluoride release in the oral cavity, and LDH has the potential to achieve this by taking up and releasing fluoride repeatedly. A range of fluoride rechargeable LDH powders were successfully synthesized and characterized, with different formulations showing variations in fluoride uptake and release capabilities. This study suggests that LDH has the potential to be incorporated into various applications by altering the composition or ratio to achieve desired fluoride uptake or release levels.
APPLIED CLAY SCIENCE
(2021)
Article
Engineering, Environmental
Ruonan Wang, Zhen Wang, Shipeng Wan, Qiang Liu, Jie Ding, Qin Zhong
Summary: The conversion of CO2 into valuable products using solar energy is a sustainable approach for addressing energy and environmental issues. In this study, monolayer NiAl-LDH nanosheets were successfully prepared through a simple two-step process, resulting in high electron yield and quantum efficiency. The thickness regulation strategy not only enhanced the CO2 adsorption and activation capacity, but also altered the adsorption and activation modes of CO2.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
M. S. Pedraza-Chan, U. Salazar-Kuri, R. Sanchez-Zeferino, I. I. Ruiz-Lopez, A. Escobedo-Morales
Summary: The study investigates the growth mechanism of supported layered double hydroxide (LDH) frameworks, and found through simulation and experimentation that the simulated structures can mimic the topology of synthesized LDH frameworks, while also predicting the impact of synthesis parameters on morphological features.
APPLIED CLAY SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Rina Sato, Shingo Machida, Minoru Sohmiya, Yoshiyuki Sugahara, Regis Guegan
Summary: The study investigated the intercalation of a 1,1'-diethyl-2,2'-cyanine iodide (PIC) cationic dye within Mg-Al layered double hydroxide (LDH) using anionic surfactants as vector/carrier phases. The results showed that the intercalation and aggregation states of the cationic dye within LDH depend on both the surfactant state (monomer form or spherical micelle) and its amount. The intercalation of PIC at a low molar ratio to the anionic surfactant leads to the formation of J-aggregates with unique fluorescence properties.
Article
Engineering, Chemical
Mingzhe Dong, Qinglong Luo, Jun Li, Kaiyuan Shi, Zhijian Wu, Jie Tang
Summary: Porous MgAl-layered double hydroxides (MgAl-LDHs) were synthesized by a sol-gel method and converted into LiAl-LDHs through a dissolution and recrystallization process. Both MgAl-LDHs and LiAl-LDHs showed high adsorption capacity and are promising for scalable lithium extraction from salt-lake brines.
MINERALS ENGINEERING
(2023)
Article
Chemistry, Physical
Tomohito Sudare, Mizuki Ueda, Takuro Yamaguchi, Mongkol Tipplook, Hideki Tanaka, Fumitaka Hayashi, Katsuya Teshima
Summary: In layered materials, the stacking sequence can affect ion transport and storage properties. However, the relationship between the stacking sequence and anion transport and storage properties is not well understood. In this study, we found that the stacking sequence influences the nitrate-storage properties of layered double hydroxides. The 2H1 polytype has a higher nitrate-storage capacity compared to the 3R1 polytype. The difference in nitrate-storage capacity is attributed to the soft nature of the 2H1 polytype, which allows minimal lattice changes, while the rigid lattice of the 3R1 sequence requires a larger lattice expansion, hindering ion storage.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Physical
Fanping Kong, Yuan Xie, Caifeng Xia, Hanhan Huang, Derui Liang, Yahui Qiu, Qian Zhang, Xinpeng Liu, Huaizhi Shao, Zilin Meng
Summary: Biochar supported Zn-Al-Fe layered double hydroxide (LDH@BC) was synthesized for efficient removal of H2S. The LDHs grew uniformly on the surface of BC and formed a porous structure, enabling better gas passage. The optimized LDH@BC composite exhibited over 80% removal efficiency for H2S at a concentration of 1000 mg/m(3) and temperature of 180C.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Inorganic & Nuclear
Souhila Mahmoudi, Zoubida Chemat-Djenni, Abdallah Bouguettoucha, Abderraouf Guediri, Derradji Chebli, Antonio Gil
Summary: The aim of this study was to remove Pb (II) from aqueous solutions using a new hydrotalcite material, MgCuCaALLDH. The material was characterized using various techniques, and the adsorption behavior of Pb (II) on the material was studied. The results showed that the adsorption of Pb (II) followed a pseudo-second order kinetic model and a Sips isotherm. A statistical method was used to analyze the adsorption mechanism.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Kai Wu, Qing Ye, Lanyang Wang, Fanwei Meng, Hongxing Dai
Summary: A novel kind of CO2 solid adsorbents was prepared by loading layered double hydroxides (LDH) on mesoporous alumina (MA) support. The LDHs were evenly distributed on the surface of MA, resulting in improved CO2 adsorption performance through chemical adsorption and storage of CO2 in the form of carbonate. This new adsorbent has great potential in CO2 adsorption applications.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Engineering, Environmental
Lihua Feng, Qian Zhang, Fangying Ji, Lei Jiang, Caocong Liu, Qiushi Shen, Qian Liu
Summary: In this study, PS-La-LDH hydrogel beads were prepared as promising adsorbents for phosphate removal, showing excellent adsorption performance and selectivity under various conditions. Results indicated that the adsorption process of phosphate by PS-La-LDH followed the pseudo-second-order kinetic model and Freundlich model, with electrostatic interaction, ligand exchange, and ion exchange facilitating the adsorption of phosphate.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Crystallography
Elena S. Zhitova, Rezeda M. Sheveleva, Andrey A. Zolotarev, Sergey V. Krivovichev
Summary: The crystal structure of quintinite, Mg4Al2(OH)(12)(CO3).3H(2)O, from the Jacupiranga alkaline complex in Brazil was analyzed, revealing ordered arrangements of magnesium and aluminum atoms within the structure. The interlayer structure was found to contain disordered carbonate groups and water molecules. The samples in Jacupiranga were identified as quintinite-2T, which is the second discovery of this polytype after the Kovdor alkaline complex in Russia. An important crystal-chemical criterion, the interlayer distance, was found to be approximately 7.56 Å in natural specimens from different locations worldwide.
Article
Chemistry, Applied
Andrew P. Wong, Eleni A. Kyriakidou, Todd J. Toops, John R. Regalbuto
Article
Chemistry, Physical
Jingke Mo, Ryan R. Dehoff, William H. Peter, Todd J. Toops, Johney B. Green, Feng-Yuan Zhang
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2016)
Article
Chemistry, Applied
Andrea Strzelec, Randy L. Vander Wal, Thomas N. Thompson, Todd J. Toops, C. Stuart Daw
TOPICS IN CATALYSIS
(2016)
Editorial Material
Chemistry, Physical
Marek Pruski, Aaron D. Sadow, Igor I. Slowing, Christopher L. Marshall, Peter Stair, Jose Rodriguez, Alex Harris, Gabor A. Somorjai, Juergen Biener, Christopher Matranga, Congjun Wang, Joshua A. Schaidle, Gregg T. Beckham, Daniel A. Ruddy, Todd Deutsch, Shaun M. Alia, Chaitanya Narula, Steve Overbury, Todd Toops, R. Morris Bullock, Charles H. F. Peden, Yong Wang, Mark D. Allendorf, Jens Norskov, Thomas Bligaard
Article
Chemistry, Physical
Chao Xie, Todd J. Toops, Michael J. Lance, Jun Qu, Michael B. Viola, Samuel A. Lewis, Donovan N. Leonard, Edward W. Hagaman
Article
Chemistry, Physical
Andreas Gremminger, Josh Pihl, Maria Casapu, Jan-Dierk Grunwaldt, Todd J. Toops, Olaf Deutschmann
APPLIED CATALYSIS B-ENVIRONMENTAL
(2020)
Review
Energy & Fuels
Yujun Wang, Carl J. Kamp, Yuesen Wang, Todd J. Toops, Changsheng Su, Ruoqian Wang, Jian Gong, Victor W. Wong
Article
Chemistry, Applied
Tanya Shirman, Todd J. Toops, Elijah Shirman, Anna Shneidman, Sissi Liu, Keeve Gurkin, Jack Alvarenga, Michael P. Lewandowski, Michael Aizenberg, Joanna Aizenberg
Summary: The development of novel, efficient, and stable catalytic materials is becoming increasingly urgent due to the detrimental effects of anthropogenic air pollution. Tightening regulations and improved engine design require next-generation catalysts with improved low-temperature activity and high-temperature stability. The innovative approach of incorporating sacrificial composite templates allows for more efficient utilization of precious metals and enhanced overall catalyst performance at reduced loadings.
Article
Chemistry, Applied
Eleni A. Kyriakidou, Jungkuk Lee, Jae-Soon Choi, Michael Lance, Todd J. Toops
Summary: The study showed that different ion-exchanged zeolite samples exhibited varying abilities in adsorbing propylene and NO, with silver ion-exchanged BEA zeolites showing strong adsorption for propylene and palladium ion-exchanged BEA zeolites demonstrating the greatest oxidation ability during desorption.
Article
Chemistry, Physical
Daekun Kim, Todd J. Toops, Ke Nguyen, Michael J. Lance, Jun Qu
Summary: The study evaluated the impact of different additives on the performance of three-way catalysts in an engine bench test, showing that ZDDP2 and IL+ZDDP2-aged TWC samples had a more significant degradation on water-gas shift reaction and oxygen storage capacity compared to ZDDP1 and IL+ZDDP1-aged TWC samples. This was confirmed by XRD patterns and ICP-OES analysis, revealing higher phosphorus content in the washcoat of ZDDP2 and IL+ZDDP2-aged TWC samples.
Article
Chemistry, Physical
Todd J. Toops, Pranaw Kunal
Summary: With stricter emission control regulations, multi-functional catalyst systems are becoming more important for low-temperature operation. This study investigates different multi-component catalyst systems and their effectiveness in reducing emissions under cold-start conditions. A merit function is developed to evaluate the effectiveness of each system relative to emission standards. The results show that a 1:1:4 ratio of PNA:HCT:DOC is the most effective configuration for emissions reduction.
Article
Engineering, Mechanical
Daekun Kim, Todd J. Toops, Ke Nguyen, Michael J. Lance, Jun Qu
Summary: The impact of a boron-containing lubricant oil additive (BR) on the performance of a Pd/Rh-based three-way catalyst (TWC) is investigated and compared with the effects of no additive (NA) and the industry standard zinc dialkyl-dithiophosphate (ZDDP). Accelerated aging of the catalysts using a genset shows that the BR-aged TWC exhibits similar reactivity to the NA-aged TWC, while the ZDDP-aged TWC shows increased reactivity for certain gas species. Analytical techniques reveal the presence of boron in the BR-aged TWC samples, but no boron-related peaks are observed in the XRD pattern.
Article
Imaging Science & Photographic Technology
Martin L. Wissink, Todd J. Toops, Derek A. Splitter, Eric J. Nafziger, Charles E. A. Finney, Hassina Z. Bilheux, Louis J. Santodonato, Yuxuan Zhang
Summary: Neutron imaging is an attractive method for non-destructively probing objects or systems that are not accessible by conventional means. However, the low flux of neutron sources and limitations of existing detectors have restricted its applicability.
JOURNAL OF IMAGING
(2022)
Article
Engineering, Environmental
Daekun Kim, Todd J. Toops, Ke Nguyen, D. William Brookshear, Michael J. Lance, Jun Qu
EMISSION CONTROL SCIENCE AND TECHNOLOGY
(2020)
Article
Chemistry, Physical
Fredrik Gunnarsson, Josh A. Pihl, Todd J. Toops, Magnus Skoglundh, Hanna Harelind
APPLIED CATALYSIS B-ENVIRONMENTAL
(2017)
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)