Article
Chemistry, Physical
Yuntao Gu, Sreshtha Sinha Majumdar, Josh A. Pihl, William S. Epling
Summary: The study investigates the NO adsorption mechanism over Pd/ZSM-5 through flow reactor experiments and surface spectroscopy. The hydration state of Pd cations is crucial in determining the impact of H2O and CO concentration on PNA performance. Below 150 degrees C, the inhibition effect of H2O on NO adsorption is mitigated by CO, while at 150 degrees C, the maximum NO storage capacity of PNA is observed due to dehydration.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Yingjie Wang, Xiaoyan Shi, Zhongqi Liu, Yulong Shan, Wei Shi, Yunbo Yu, Hong He
Summary: This work examined Pd-SSZ-13 catalysts with 1.0 wt% Pd loading as passive NOx adsorber (PNA) materials. Various Pd-SSZ-13 catalysts were prepared by calcining the initially prepared Pd-SSZ-13 under static air following different steps. The results showed that the interaction of PdOx nanoparticles and Pd(OH)2 with Bronsted acid sites promoted the migration of Pd species from the external surface to inside the crystal during thermal treatment, leading to highly dispersed Pd ions.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Engineering, Environmental
Haodan Cheng, Xiaolong Tang, Honghong Yi, Rouxing Pan, Jie Zhang, Fengyu Gao, Qingjun Yu
Summary: Lean-burn mode of diesel vehicles leads to high NOx emission, which can be effectively removed by SCR unit. This article focuses on the application of small-pore zeolites SSZ-13 and SSZ-39 in NOx purification through PNA and SCR, providing advanced guidance for researchers in this field.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Todd J. Toops, Andrew J. Binder, Pranaw Kunal, Eleni A. Kyriakidou, Jae-Soon Choi
Summary: The study found that BEA and ZSM-5 zeolites were effective in trapping hydrocarbons, while SSZ-13 zeolite had a lower adsorption capacity. The presence of Ag or Pd did not significantly impact the overall hydrocarbon uptake, but Pd/zeolites were notably more effective in enhancing NOx storage.
Article
Chemistry, Physical
Roberta Villamaina, Umberto Iacobone, Isabella Nova, Enrico Tronconi, Maria Pia Ruggeri, Loredana Mantarosie, Jillian Collier, David Thompsett
Summary: The study applied transient response methods to investigate Pd-CHA systems as Passive NOx Adsorbers (PNA) for low-temperature NOx removal from Diesel exhausts. Results showed that Pd-1 was the main NO storage site in mixtures with different oxidizing capabilities, impacting NO storage/release performances of Pd-CHA based PNAs.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Applied
Aiyong Wang, Kunpeng Xie, Ashok Kumar, Krishna Kamasamudram, Louise Olsson
Summary: A concept of a layered Pd/SSZ-13 with Cu/SSZ-13 as PNA-SCR dual-layer monolith catalyst for NOx abatement is demonstrated. The dual-layer sample maintains most of the NOx storage capacity while the NOx desorption temperature is modified due to Cu/SSZ-13 as the top layer. The dual-layer concept shows interesting potential for NOx abatement, but requires further developments on the PNA material to ensure stable storage capacity.
Review
Chemistry, Multidisciplinary
Ce Bian, Dan Li, Qian Liu, Shoute Zhang, Lei Pang, Zhu Luo, Yanbing Guo, Zhen Chen, Tao Li
Summary: This review summarizes the recent research progress of Pd/zeolite passive NOx adsorber (PNA) materials in reducing NOx, CO, and hydrocarbon emissions during cold start of vehicles. It covers topics such as active adsorption sites, adsorption mechanism, material properties, preparation methods, storage and release performance, and structure-performance relationships. The deactivation challenges and potential solutions are also discussed, along with suggestions for future improvements and research directions.
CHINESE CHEMICAL LETTERS
(2022)
Article
Engineering, Environmental
Dan Li, Ying Meng, Dapeng Hao, Qianzhao Ding, Lei Pang, Guoju Yang, Yanbing Guo, Jihong Yu, Tao Li
Summary: This study investigated the deactivation effects of phosphorus on Pd/SSZ-13 and found that phosphorus decreased the porosity and acidity of the catalyst, resulting in the decrease of active sites and the decrease in activity and stability.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Dan Li, Qianzhao Ding, Dapeng Hao, Jinfeng Han, Guoju Yang, Lei Pang, Yanbing Guo, Jihong Yu, Tao Li
Summary: This study presents a simple and efficient strategy for regenerating phosphorus-poisoned Pd/SSZ-13 with the cooperation of hydrothermal aging treatment and Na cocations. The restoration ratio of the adsorption capacity of poisoned Pd/SSZ-13 was over 90% after regeneration, and the NOx adsorption activities of the phosphorus-poisoned Pd/SSZ-13 almost completely recovered.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Guohao Wu, Bingbing Chen, Zhifeng Bai, Qi Zhao, Zhihui Wang, Chunshan Song, Xinwen Guo, Chuan Shi
Summary: The morphology of Co3O4 oxide as a flake shape enhances the NOx storage efficiency due to its abundant surface oxygen species and large surface area. Additionally, Co3O4-flake and Co7Ni3Ox-flake samples with moderate basicity can store NOx as nitrite species, facilitating NOx desorption at lower temperatures.
CATALYSIS COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Jeewan Pokhrel, Daniel F. Shantz
Summary: This study describes the use of copper-exchanged SSZ-39 catalyst for the direct conversion of methane to methanol, and demonstrates its promising catalytic performance. Testing in a continuous flow reactor at 225 degrees C shows that Cu-SSZ-39 exhibits higher activity for methane partial oxidation compared to Cu-SSZ-13. A clear maximum in methanol productivity is observed for Cu-SSZ-39 at a Cu/Al ratio of approximately 0.2. Unlike SSZ-13, the reactivity of catalysts with a Cu/Al > 0.1 is significantly lower in the absence of oxygen.
JOURNAL OF CATALYSIS
(2023)
Article
Chemistry, Physical
Pranaw Kunal, Todd J. Toops, Michelle K. Kidder, Michael J. Lance
Summary: Pd-functionalized chabazite (Pd/SSZ-13) demonstrated varying levels of effectiveness in passive NOx adsorption (PNA) under different experimental conditions, with notable differences observed in the presence of CO and unsaturated hydrocarbons. The desorption behaviors also showed qualitative differences, with distinct desorption stages observed for different feed conditions. The presence of CO and unsaturated hydrocarbons in the feed resulted in almost complete elimination of lower temperature desorption peaks.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Engineering, Environmental
Wenjuan Xue, Donghai Mei
Summary: This study systematically investigated the reaction mechanism and kinetics of methane combustion using H-SSZ-13 zeolite encapsulated Pd nanoclusters. The results showed that PdII3O3H/H-SSZ-13 nanocluster was the most active catalyst for complete methane combustion.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Junlin Chen, Yulong Shan, Yu Sun, Wenqing Ding, Sen Xue, Xuewang Han, Jinpeng Du, Zidi Yan, Yunbo Yu, Hong He
Summary: This study investigated the effects of phosphorus on Cu-SSZ-39 catalysts before and after hydrothermal aging treatment. Phosphorus poisoning significantly decreased the low-temperature NH3-SCR catalytic activity, but this activity loss was alleviated by further hydrothermal aging treatment. Characterization techniques revealed that Cu-P species produced by phosphorus poisoning decreased the redox ability of active copper species, resulting in the observed low-temperature deactivation. However, after hydrothermal aging treatment, Cu-P species partly decomposed, leading to the recovery of low-temperature NH3-SCR catalytic activity.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Applied
Hao Xu, Jie Zhu, Jun Qiao, Xiyuan Yu, Na-Bo Sun, Chaoqun Bian, Jie Li, Longfeng Zhu
Summary: A solvent-free synthesis method for aluminosilicate SSZ-39 zeolite using DMDMP as an organic structure-directing agent is reported for the first time. The zeolite exhibits excellent catalytic performance in NH3-SCR reaction with high crystallinity, uniform morphology, large surface area, and strong acidic sites. The method shows advantages such as high product yield, simple synthesis procedures, and reduction of pollutants.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Xiao Zhang, Yao Xu, Yang Liu, Liang Niu, Yanan Diao, Zirui Gao, Bingbing Chen, Jinglin Xie, Mingshu Bi, Meng Wang, Dequan Xiao, Ding Ma, Chuan Shi
Summary: In this study, researchers propose a novel MoCxOy oxygen carrier for syngas production through the chemical looping CH4-CO2 reforming reaction. The combination of molybdenum carbide and nickel particles enables high-selectivity CH4 activation at low temperatures. This is the first study to utilize molybdenum carbide as an oxygen storage material, paving the way for the use of transition metal carbides in chemical looping processes.
Article
Chemistry, Multidisciplinary
Fan Lin, Wenda Hu, Nicholas R. Jaegers, Feng Gao, Jian Zhi Hu, Huamin Wang, Yong Wang
Summary: The effects of water on the carboxylic acid ketonization reaction over solid Lewis-acid catalysts were investigated using various analytical techniques. The presence of water vapor in the feed gas was found to decrease the reaction rate by increasing the activation barrier of acetic acid adsorption on anatase TiO2 catalyst. Water was found to associate with the adsorbed intermediates on the catalyst surface and alter their reactivity for the ketonization reaction. The presence of water vapor also affected the species present on the catalyst surface and led to lower ketonization activity.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Applied
Konstantin Khivantsev, Miroslaw A. Derewinski, Janos Szanyi
Summary: This review surveys the efforts to form and characterize cationic species in different zeolites, including both metal and non-metal cations, with an emphasis on their novel properties and reactivity. The authors describe how synthesis of such species was achieved by considering both cation identity and zeolite architecture, and synthesis methods. Well-defined cationic species were successfully obtained through careful choice of metal incorporation methods, Al distribution tuning, and synthesis parameters. Discoveries of previously unknown phenomena in zeolite and cation-zeolite chemistry using these well-defined systems are discussed in this review article. The methodology to enhance the stability of cations in zeolite for adsorption and catalytic applications, as well as the usefulness of these materials in elucidating unknown catalytic intermediates and mechanisms, is also examined.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Xuetao Qin, Ruiqi Zhang, Ming Xu, Yao Xu, Lirong Zheng, Chengyu Li, Shixiang Yu, Jie Yan, Jinglin Xie, Genghuang Wu, Junfeng Rong, Meng Wang, Ding Ma
Summary: Selective hydrogenation of alkynes to alkenes is crucial in industrial production, but preventing further hydrogenation poses challenges. In this study, we demonstrate a tandem process using the α-MoC catalyst with CO and H2O to achieve the selective hydrogenation of phenylacetylene.
Article
Chemistry, Multidisciplinary
Rongli Mi, Lingzhen Zeng, Maolin Wang, Shuheng Tian, Jie Yan, Shixiang Yu, Meng Wang, Ding Ma
Summary: The utilization of carbon resources stored in plastic polymers through chemical recycling and upcycling is a promising approach. A highly selective reaction route for transforming polylactic acid (PLA) into 1,2-propanediol utilizing a Zn-modified Cu catalyst is presented. This solvent-free reaction exhibits excellent reactivity and selectivity, providing an innovative and economically viable solution for upgrading polyesters.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Yuchen Jiao, Meng Wang, Ding Ma
Summary: We presented a one-pot catalytic process that directly cracks polylactic acid into acrylic acid using an acid catalyst and an ionic liquid. This green process has advantages in terms of atom economy and efficiency in converting the polymer compared to conventional recycling/upcycling methods for polyesters. It also has the potential to inspire new upcycle strategies for different plastic wastes.
CHINESE JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Konstantin Khivantsev, Nicholas R. Jaegers, Hristiyan A. Aleksandrov, Inhak Song, Xavier Isidro Pereira-Hernandez, Mark H. Engelhard, Jinshu Tian, Linxiao Chen, Debora Motta Meira, Libor Kovarik, Georgi N. Vayssilov, Yong Wang, Janos Szanyi
Summary: Atom trapping leads to catalysts with atomically dispersed Ru1O5 sites on (100) facets of ceria, showing excellent activity in catalytic NO oxidation and high NOx storage properties. The Ru1O5 sites exhibit higher stability during calcination and the Ru1/CeO2 catalyst is stable during continuous cycling and in the presence of moisture. In addition, the catalyst shows excellent reactivity for NO reduction by CO at low temperatures. This study highlights the applicability of novel ceria-based single-atom catalysts in NO and CO abatement.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Green & Sustainable Science & Technology
Bo Sun, Jie Zhang, Maolin Wang, Shixiang Yu, Yao Xu, Shuheng Tian, Zirui Gao, Dequan Xiao, Guosheng Liu, Wu Zhou, Meng Wang, Ding Ma
Summary: The authors developed a two-step catalytic process to convert PLA into methyl methacrylate, achieving sustainable valorization of waste PLA and reducing CO2 emissions.
NATURE SUSTAINABILITY
(2023)
Editorial Material
Green & Sustainable Science & Technology
Meng Wang, Ding Ma
Summary: A conversion strategy has been developed to overcome the obstacle of chlorine impurities in upcycling plastic wastes, enabling their circularity.
NATURE SUSTAINABILITY
(2023)
Article
Nanoscience & Nanotechnology
Zhun Dong, Wenda Hu, Hongjun Liu, Zhenzhen Yang, Debabrata Moitra, De-en Jiang, Sheng Dai, Jian Zhi Hu, Di Wu, Hongfei Lin
Summary: It is found that treating UiO-66 with methanol solvent and thermal activation can significantly enhance its CO2 adsorption capacity. Methanol treatment effectively removes residual impurities in the micropores of UiO-66 and improves its surface area, pore volume, and void fraction, leading to a close-to-ideal CO2 adsorption capacity.
ACS APPLIED NANO MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Heonjae Jeong, Dan-Thien Nguyen, Yingjie Yang, D. Bruce Buchholz, Guennadi Evmenenko, Jinghua Guo, Feipeng Yang, Paul C. Redfern, Jian Zhi Hu, Karl T. Mueller, Robert Klie, Vijayakumar Murugesan, Justin Connell, Venkateshkumar Prabhakaran, Lei Cheng
Summary: In this study, the molecular interaction and chemical reactivity of electrolyte ions and solvent molecules on electrodes in multivalent magnesium batteries were investigated. The results provide insights into the mechanisms of electrolyte decomposition and suggest the importance of designing anodically stable electrolytes.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Xiaochen Zhang, Aowen Li, Haoyi Tang, Yao Xu, Xuetao Qin, Zheng Jiang, Qiaolin Yu, Wu Zhou, Liwei Chen, Meng Wang, Xi Liu, Ding Ma
Summary: Carbonate hydrogenation to formate is a promising route to convert captured carbon dioxide into valuable chemicals, and achieving high activity, selectivity, and stability of catalysts at low cost remains challenging. In this study, we report a supported non-noble metal catalyst, Ni/TiO2, which exhibits excellent selectivity over 96% and stability in catalyzing carbonate conversion to formate in aqueous solution. The presence of Ni-0 and Ni2+ species in the Ni/TiO2 catalysts contributes to the synergistic effect that leads to high activity and selectivity.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Multidisciplinary Sciences
Jianghao Zhang, Wenda Hu, Binbin Qian, Houqian Li, Berlin Sudduth, Mark Engelhard, Lian Zhang, Jianzhi Hu, Junming Sun, Changbin Zhang, Hong He, Yong Wang
Summary: In this study, the authors demonstrate that coordinating Pd with alkenyl-type ligands creates an electron-rich environment for selective hydrogenation. The method of forming homogeneous-like Pd catalyst structure with noble metals is crucial for inhibiting side reactions in hydrotreating processes.
NATURE COMMUNICATIONS
(2023)
Article
Green & Sustainable Science & Technology
Ruochen Cao, Mei-Qi Zhang, Yuchen Jiao, Yuchen Li, Bo Sun, Dequan Xiao, Meng Wang, Ding Ma
Summary: Catalytic upcycling of plastic wastes, especially those containing polyvinyl chloride (PVC), is challenging due to the interference of chlorine. However, this study successfully developed a catalytic process to co-upcycle PVC and polyethylene terephthalate (PET) using a chlorine-containing ionic liquid as the catalyst/solvent and ZnCl2 as a Lewis acid catalyst. The results demonstrate that chlorine from PVC can have a positive role in the upcycling of plastic wastes.
NATURE SUSTAINABILITY
(2023)
Article
Chemistry, Multidisciplinary
Ryan P. Loughran, Tara Hurley, Andrzej Gladysiak, Arunraj Chidambaram, Konstantin Khivantsev, Eric D. Walter, Trent R. Graham, Patrick Reardon, Janos Szanyi, Dylan B. Fast, Quin R. S. Miller, Ah-Hyung Alissa Park, Kyriakos C. Stylianou
Summary: We investigate the use of MIL-120, a water-stable and cost-effective metal-organic framework (MOF), for selectively capturing CO2 from wet flue gas. MIL-120, synthesized using inexpensive and environmentally benign reagents in water, has one-dimensional pores with hydroxyl-bridged Al(III) ions and benzene rings, and demonstrates high potential for CO2 capture. Breakthrough experiments show that MIL-120 can effectively capture CO2 from both dry and wet flue gas.
CELL REPORTS PHYSICAL SCIENCE
(2023)
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)
