Article
Chemistry, Multidisciplinary
Zamaan Mukadam, Sihang Liu, Angus Pedersen, Jesus Barrio, Sarah Fearn, Saurav Ch. Sarma, Maria-Magdalena Titirici, Soren B. Scott, Ifan E. L. Stephens, Karen Chan, Stefano Mezzavilla
Summary: In this study, Cu and Co single-atom catalysts supported on carbon electrodes were used to investigate the electrochemical reduction of furfural, a biomass-derived chemical. Under mild conditions, hydrofuroin, a valuable precursor to sustainable jet fuels, was selectively produced. The study also revealed insights into the mechanism and stability of the catalysts and provided a blueprint for catalyst design in this reaction.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Physical
Elise B. Gilcher, Hochan Chang, Michael Rebarchik, George W. Huber, James A. Dumesic
Summary: In this study, lumped reaction schemes were developed to investigate the hydrogenation of HAH over different catalysts. The addition of water was found to have different effects on the hydrogenation reactions of HAH over Pd, Ru, and Cu catalysts, altering the selectivity and yield of the products while providing a new pathway to increase the production rates of specific products.
Article
Green & Sustainable Science & Technology
Yunlong Yao, Zhiquan Yu, Chenyang Lu, Fanfei Sun, Yao Wang, Zhichao Sun, Yingya Liu, Anjie Wang
Summary: Thermal treatment and reduction were used to improve the activity of Cu-based catalysts, with the introduction of ZnO enhancing dispersion. The CuxC-Cu-ZnO catalyst exhibited high activity and stability in furfural hydrogenation reaction, with a furfuryl alcohol selectivity of 100% after a 70-hour run.
Review
Chemistry, Multidisciplinary
Wenwen Gao, Shihuan Liu, Guangxun Sun, Chao Zhang, Yuan Pan
Summary: Selective hydrogenation is a crucial reaction in the fine chemical industry, and the activation of H-2 is a key step. Catalysts, particularly single-atom catalysts (SACs), have shown great potential in activating H-2 for selective hydrogenation due to their high atom utilization and uniform active sites. Further research is needed to design SACs with superior H-2-activating capabilities.
Review
Chemistry, Multidisciplinary
Jiexin Zhu, Lei Lv, Shahid Zaman, Xingbao Chen, Yuhang Dai, Shenghua Chen, Guanjie He, Dingsheng Wang, Liqiang Mai
Summary: This review summarizes the current research progress and future application prospects of electrochemical CO2 methanation on single-site catalysts (SSCs). It discusses the CO2 methanation mechanism, primary activity descriptors, coordination structure and design of SSCs, and several in situ characterization methods for tracking the structural changes in SSCs. This review provides insights into the further exploitation of SSCs for selective CO2 methanation and inspires the rational design of SSCs in electrochemical CO2 methanation research.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Javier Navarro-Ruiz, Camila Rivera-Carcamo, Bruno Machado, Philippe Serp, Iker Del Rosal, Iann C. Gerber
Summary: The choice of support is crucial for the preparation of metal catalysts, as it influences the anchoring of metal species and can lead to efficient metal/support combinations for catalysis. First-principles studies were conducted on O-functionalized graphene as a model carbon support, a single Pd atom, and a Pd-13 nanocluster to describe their geometric and electronic properties. The oxygenated carbon-based support showed a metallic character with embedded Pd ion and nanocluster, and the hydrogenation process of the adsorbed cluster indicated high thermal stability and unity ratio between adsorbed hydrides and surface metal atoms at room temperature.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Mohammed J. Islam, Marta Granollers Mesa, Amin Osatiashtiani, Martin J. Taylor, Mark A. Isaacs, Georgios Kyriakou
Summary: By diluting the Pd content in the alloy, the reaction activity of Cu nanoparticles can be accelerated, leading to increased time for the cascade conversion and higher selectivity towards butanol. Compared to bulk Cu/Al2O3 and Pd/Al2O3 catalysts, the single atom alloy catalysts showed a significant increase in conversion rate. These findings suggest that fine-tuning the dilution of PdCu single atom alloy catalysts can provide cost-effective and sustainable alternatives to traditional monometallic catalysts.
Article
Chemistry, Multidisciplinary
Munsuree Kalong, Sakhon Ratchahat, Pongtanawat Khemthong, Suttichai Assabumrungrat, Atthapon Srifa
Summary: Cu/CaO catalysts with fine-tuned Co-doping were synthesized and exhibited excellent catalytic performance in the hydrogenation of furfural. The addition of Co improved the reducibility of the catalyst, resulted in smaller catalyst particles, and fine-tuned the acidic and basic sites, leading to enhanced selectivity and yield of the desired product. The catalyst showed high stability throughout the reaction.
Article
Chemistry, Applied
Sutarat Thongratkaew, Chuleeporn Luadthong, Sirapassorn Kiatphuengporn, Pongtanawat Khemthong, Pussana Hirunsit, Kajornsak Faungnawakij
Summary: The Cu-Al spinel-oxide catalyst CuAl2O4 demonstrates excellent activity in the liquid-phase hydrogenation of furfural to furfuryl alcohol, attributed to the synergistic effect between the reduced copper species and the copper spinel host. Compared to the impregnated catalyst, CuAl2O4 shows positive effects on water impurity tolerance and superiority in H2 dissociation active sites and reaction free energy.
Article
Chemistry, Physical
Elise B. Gilcher, Hochan Chang, Michael Rebarchik, George W. Huber, James A. Dumesic
Summary: This study developed lumped reaction schemes to optimize the yields of products from selective hydrogenation of HAH. By studying different reaction schemes and catalysts, rate constants and activation energies were calculated and the effects of water addition on the hydrogenation pathways were explored. The results showed that water addition had significantly different effects on hydrogenation rates and pathways under different catalysts, opening routes for the production of specific products.
Article
Energy & Fuels
Winifred Delali Anyomih, Novisi K. Oklu, Edward Ocansey, Kamlesh K. Singh, James Darkwa, Banothile C. E. Makhubela
Summary: The use of biomass and biomass-derived chemicals for energy generation is an important aspect of renewable energy research. In this study, new ligands and complexes were synthesized and evaluated as catalysts for the hydrogenation of furfural. The catalysts showed high activity for the solventless chemoselective hydrogenation of furfural, and the influence of different factors on their catalytic activity was investigated.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Chemistry, Multidisciplinary
Yuxuan Ling, Handong Ge, Jiawen Chen, Yuqi Zhang, Yunxia Duan, Minghui Liang, Yanjun Guo, Tai-Sing Wu, Yun-Liang Soo, Xiong Yin, Liming Ding, Leyu Wang
Summary: A general strategy for the fabrication of hydrophilic single atom catalysts (SACs) by cation-exchange approach is reported. The SACs are highly dispersible and stable in hydrophilic solvents, facilitating catalysis reactions in alcohols.
Article
Chemistry, Physical
Maurice Vennewald, Nina Michelle Sackers, Andree Iemhoff, Isabella Kappel, Claudia Weidenthaler, Ansgar Meise, Marc Heggen, Rafal E. Dunin-Borkowski, Luke Keenan, Regina Palkovits
Summary: Single-atoms on carbon-nitrogen supports are considered catalysts for various reactions, but it's uncertain if these species or subnanometer clusters formed during reactions are the active species. This study investigates the behavior of palladium single-atoms on graphitic carbon nitride during ethylene hydrogenation and H2-D2 exchange. The results suggest that palladium aggregates to clusters at 100 degrees C in the presence of ethylene and hydrogen, and these clusters are the active species in catalytic reactions. This research highlights the importance of analyzing the dynamics of catalysts during reactions to identify the active species and understand the influence of gas atmosphere on metal speciation.
JOURNAL OF CATALYSIS
(2023)
Article
Nanoscience & Nanotechnology
Bindu Syal, Pawan Kumar, Princy Gupta
Summary: Single-atom catalysts (SACs), especially copper SACs (Cu SACs), have shown great potential in catalysis due to their well-adjusted d-band center, which leads to promising catalytic activity. This review highlights the recent advancements in the synthesis of Cu SACs and thoroughly discusses their electrocatalytic applications in various reactions, stability, and performance in fuel cells and batteries. The study concludes with a summary of the most recent developments in the synthesis and applications of Cu SACs.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Physical
Minki Jun, Heesu Yang, Dongyong Kim, Gi Joo Bang, Minah Kim, Haneul Jin, Taehyun Kwon, Hionsuck Baik, Jeong-Hun Sohn, Yousung Jung, Heejin Kim, Kwangyeol Lee
Summary: The study reports the synthesis of sponge-like Pd3Pb multiframes through thermodynamically driven phase segregation, showing high selectivity and activity attributed to the high surface area and optimized surface energy of the catalyst. Density functional theory calculations reveal that the Pd3Pb MF catalyst can effectively reduce the binding energy of FOL to its surface, preventing side reactions.
Article
Nanoscience & Nanotechnology
Maria de Lourdes Gonzalez-Juarez, Mark A. Isaacs, Darren Bradshaw, Iris Nandhakumar
Summary: In this study, molecular iodine was incorporated into a two-dimensional semiconducting metal-organic framework (MOF) Cu3(2,3,6,7,10,11-hexahy-droxytriphenylene)2 Cu3(HHTP)2 via incipient wetness impregnation to enhance its thermoelectric properties. A power factor of 0.757 mu W m-1 K-2 was obtained for this MOF, demonstrating an effective route for the preparation of moderate-performance thermoelectric MOFs.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Andrea Merenda, Samantha A. Orr, Yang Liu, Blanca Hernandez Garcia, Amin Osatiashtiani, Gabriel Morales, Marta Paniagua, Juan A. Melero, Adam F. Lee, Karen Wilson
Summary: In this study, a dual-catalyst bed configuration was developed to achieve efficient conversion of levulinic acid into gamma-Valerolactone (GVL). By utilizing sulfated zirconia (SZ) and ZrO2/SBA-15 as the Bronsted and Lewis acid catalysts, respectively, high conversion and selectivity were achieved in the esterification and hydrogenation reactions. The dual-bed system showed significantly higher productivity compared to the individual catalysts or their physical mixture.
Article
Chemistry, Analytical
Georgios Bampos, Sotirios Tsatsos, Georgios Kyriakou, Symeon Bebelis
Summary: A series of bimetallic and monometallic electrocatalysts were prepared and tested for their hydrogen oxidation reaction activity. Among the Pd-based electrocatalysts, 7.5 wt% Pd-2.5 wt% Ag/C showed the highest activity, attributed to the electronic interaction between Ag and Pd. The findings have implications for improving the efficiency of hydrogen oxidation reactions.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Nanoscience & Nanotechnology
Graziano Di Carmine, Costanza Leonardi, Luke Forster, Min Hu, Daniel Lee, Christopher M. A. Parlett, Olga Bortolini, Mark A. Isaacs, Alessandro Massi, Carmine D'Agostino
Summary: The alcoholysis of furfuryl alcohol in SBA-15-pr-SO3H catalysts with different pore sizes was studied. Results showed that changes in pore size have a significant effect on catalyst activity and durability, with larger-pore-size catalysts deactivating more rapidly. The presence of SO3H groups on the external surface and reduced pore clogging were identified as factors contributing to the increased reusability of smaller-pore-size catalysts.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Environmental
Pablo Jimenez-Calvo, Mario J. Munoz-Batista, Mark Isaacs, Vinavadini Ramnarain, Dris Ihiawakrim, Xiaoyan Li, Miguel Angel Munoz-Marquez, Gilberto Teobaldi, Mathieu Kociak, Erwan Paineau
Summary: The configuration and geometry of chemical reactors significantly impact performance evaluation and the development of thermodynamic and kinetic model reactions for photocatalytic materials. Lack of accurate transport profiles for mass, heat, and photons in photochemical reactors hinders comparison between experiments and standardization. This study proposes a compact stainless-steel photoreactor for hydrogen photoproduction and uses TiO2 Schottky junctions with Pd, Pt, or Au nanoparticles to validate the reactor's operation. Results show improved profiles and increased quantum yields compared to previous studies.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Sotirios Tsatsos, Georgios Kyriakou
Summary: The deposition of Cu on a stepped Ni(119) surface was studied using experimental and computational methods. Cu was found to grow in a layer-by-layer mode at ambient temperature and primarily occupy 4-fold hollow sites below the step edge. The adsorption of CO was quantitatively altered by the presence of Cu, which was attributed to the geometric and electronic effects of the Cu-Ni interaction.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Mohammed J. Islam, Marta Granollers Mesa, Amin Osatiashtiani, Martin J. Taylor, Mark A. Isaacs, Georgios Kyriakou
Summary: By diluting the Pd content in the alloy, the reaction activity of Cu nanoparticles can be accelerated, leading to increased time for the cascade conversion and higher selectivity towards butanol. Compared to bulk Cu/Al2O3 and Pd/Al2O3 catalysts, the single atom alloy catalysts showed a significant increase in conversion rate. These findings suggest that fine-tuning the dilution of PdCu single atom alloy catalysts can provide cost-effective and sustainable alternatives to traditional monometallic catalysts.
Article
Chemistry, Physical
Mahashanon Arumugam, Amin Osatiashtiani, Ka-Lun Wong, Khairul Basyar Baharudin, Sin Yuan Lai, M. Safa-Gamal, Hwei Voon Lee, Chaw Jiang Lim, David Kubic, Yun Hin Taufiq-Yap
Summary: In this study, hierarchical nanozeolites were synthesized for the hydrodeoxygenation of oleic acid to diesel-range hydrocarbons. The nanozeolites were based on HZSM-5 and HBEA and had appropriate mesopores. The catalysts showed high conversion of oleic acid and excellent stability, making them promising for efficient hydrotreatment of bulky substrates.
MOLECULAR CATALYSIS
(2023)
Article
Chemistry, Physical
Mahashanon Arumugam, Oleg Kikhtyanin, Amin Osatiashtiani, Veronika Kyselova, Vlastimil Fila, Iva Paterova, Ka-Lun Wong, David Kubicka
Summary: The present study develops a prominent base catalyst for the aldol condensation of furfural and acetone. The catalyst shows high furfural conversion and selectivity to desired products. Despite some limitations, the catalytic performance can be improved through future investigations.
SUSTAINABLE ENERGY & FUELS
(2023)
Article
Chemistry, Physical
Vannia C. C. dos Santos-Durndell, Lee J. J. Durndell, Mark A. A. Isaacs, Adam F. F. Lee, Karen Wilson
Summary: Despite its significance in aqueous phase reactions and those wherein water is a by-product, the hydrophobicity of catalysts is often neglected. In this study, we synthesized WOx/ZrOx impregnated periodic mesoporous organosilicas (PMOs) with varying organic framework content. The incorporation of phenyl groups into the framework of mesoporous SBA-15 silica imparted surface hydrophobicity and tuned the solid acidity, leading to excellent turnover frequencies (TOFs) for the esterification reactions. The hydrophobic, solid acid catalysts showed superior activity and stability compared to the hydrophilic catalysts, making them suitable for aqueous phase synthesis.
SUSTAINABLE ENERGY & FUELS
(2023)
Article
Chemistry, Physical
Joyashish Debgupta, Leonardo Lari, Mark Isaacs, John Carey, Keith P. McKenna, Vlado K. Lazarov, Victor Chechik, Richard E. Douthwaite
Summary: First principles modeling reveals that defect-induced trap states within the band gap of anatase TiO2 surfaces can be corrected by modification with Zr(IV) ions. Experimental testing using anatase nanocrystals modified with Zr precursors confirms these predictions and shows improved electron conductivity and mobility in nanocrystalline systems. This simple methodology to reduce interfacial defects may have wide applications in improving the efficiency of metal oxide powders and films in various energy applications.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Wei Zhang, Xian Wu, Qingjin Fu, Haotian Qu, Joanna Borowiec, Mark Isaacs, Guangmin Zhou, Ivan P. Parkin, Guanjie He
Summary: This study reports the use of ammonium fluoride as an additive in zinc sulfate electrolyte to enhance zinc anodes. The formation of electrostatic shielding layer and ZnF2-rich solid-state interphase layer can effectively inhibit side reactions and dendrite growth, leading to improved performance in zinc cells.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Mark A. Isaacs, Charalampos Drivas, Roxy Lee, Robert Palgrave, Christopher M. A. Parlett, David J. Morgan
Summary: This study focuses on the best practice for experimental construction when approaching the task of understanding chemical environments in cerium-based materials by XPS.
APPLIED SURFACE SCIENCE ADVANCES
(2023)
Article
Chemistry, Physical
Mark A. Isaacs
Summary: XPS analysis of soft materials is challenging due to sample degradation. Using correct protocols during experimental spectral acquisition minimizes errors and improves scientific understanding. XPS spectra of titanium butoxide serve as a valuable reference for studying alkoxide-based metal oxide and mixed-metal oxide functional systems.
APPLIED SURFACE SCIENCE ADVANCES
(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)
