Article
Chemistry, Physical
Hao Ge, Yasutaka Kuwahara, Kazuki Kusu, Zhenfeng Bian, Hiromi Yamashita
Summary: This study demonstrates a simple strategy of utilizing plasmonic absorption effect to enhance the photothermal catalysis of CO2 to CH4. In situ infrared spectroscopic analysis reveals the pathway of the photothermal catalytic CO2 methanation reaction. This research provides new insights for developing efficient plasmonic catalysts for CO2 methanation.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Qiqi Sun, Zheren Chi, Xing Qin, Limei Qin, Yongsheng Li, Dechao Niu
Summary: This study proposes a stepwise-confined self-reduction strategy to construct a dynamic self-reduction dual-metal (Cu/Fe) nanocatalyst that can generate reactive oxygen species in an acidic and reductive tumor microenvironment. In vitro and animal experiments demonstrate that this synergistic catalyst can significantly inhibit tumor growth while ensuring the safety of treatment. This work provides a versatile pathway for the precise construction of bioapplicable multimetal-based nanocatalysts for efficient and safe diagnosis and treatment of tumors.
CHEMISTRY OF MATERIALS
(2023)
Article
Engineering, Chemical
Jing Xiong, Peng Zhang, Yuanfeng Li, Yuechang Wei, Yilin Zhang, Jian Liu, Zhen Zhao
Summary: The study demonstrates the importance of hierarchical porous structure in enhancing catalytic activity for soot oxidation. The Pd/3DOMM-ZrO2 catalyst shows the highest activity compared to catalysts with single macroporous or mesoporous structure, with a higher reaction rate at lower temperatures.
CHEMICAL ENGINEERING SCIENCE
(2021)
Article
Chemistry, Physical
Baifeng Wu, Xiaofeng Wang, Xuefeng Xia, Qixin Wan, Yangsheng Li, Fan Li
Summary: The power conversion efficiency of perovskite solar cells has made significant progress in the past decade, but fabricating high-quality perovskite films remains a challenge due to defect-density and non-radiative recombination. This study introduces a new additive, GuaBF(4), to improve the quality of perovskite films and enhance the photovoltaic performance of the solar cells through a synergistic effect. The inclusion of GuaBF(4) leads to higher crystallinity, larger crystal grain, and smoother surface of the perovskite films, while also passivating traps/defects, reducing non-radiative recombination, and promoting charge carrier transportation. As a result, a high-performance perovskite solar cell with improved stability and reduced hysteresis behavior is achieved.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Mahsasadat Boraghi, Travis A. White, Shabnam Pordel, Hailey Payne
Summary: Efficient electrocatalysts for CO2 reduction require a comprehensive understanding of the catalytic architecture and reaction mechanism. Experimental and computational results showed that the Re(I) catalysts with the [Zn(cyclam)](2+) cocatalyst required less energy input for CO2 reduction, but this cocatalyst did not improve activity for the Re(I) electrocatalyst with a strong electron-withdrawing group. This highlights how electronic distribution within the molecular architecture can impact the nucleophilicity of Re-I(bpy-X) electrocatalysts.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Denghui Wang, Hui Li, Qi Yao, Shien Hui, Yanqing Niu
Summary: Various Mn-based catalysts for NO oxidation were prepared using MnOx as the active compound and TiO2 and Al2O3 as the catalyst supports. The results showed that Mn-0.4/Al exhibited the best catalytic efficiency, with Al2O3 providing more active oxygen sites for oxidation and MnOx/Al2O3 having higher surface area and pore volume.
GREEN ENERGY & ENVIRONMENT
(2021)
Article
Engineering, Environmental
Peng Zhao, Nengjie Feng, Bangjie Tan, Zhuobin Huo, Geng Liu, Hui Wan, Guofeng Guan
Summary: In this study, facet controlled Ce1_xLaxO delta nanocomposites were constructed and used for soot abatement. The effects of crystal facets on heterogeneous catalysis were investigated. The results showed that the concentration of La3+ had a significant impact on the catalytic activity, with low concentrations enhancing the activity and excessive concentrations leading to undesirable effects.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
An Wang, Zhongyu Hou
Summary: In this paper, a novel design of surface dielectric barrier discharge (SDBD) reactor is proposed to control the flow fields in order to improve conversion efficiency in removing NO by plasma. The research investigates the influence of special input energy, inlet NO concentration, relative humidity, and oxygen content on NO conversion, with simulations on velocity, turbulence kinetic energy distribution, and temperature during discharge. The study finds that configuration (a) generally outperforms configuration (b) in terms of conversion efficiency and energy efficiency in most cases.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Materials Science, Multidisciplinary
Chunjie Zhang, Dong Wang, Zhen Wang, Guangshuai Zhang, Zhichao Liu, Jie Wu, Jin Hu, Guangwu Wen
Summary: A metal-organic framework-engaged structural regulation strategy is developed to enhance the desalination properties of carbon fibers. The study shows that porous carbon fibers with hierarchical porous structure and hydrophilic surface provide abundant ions-accessible sites and rapid electron transport. Furthermore, monolithic porous carbon fibers-carbon nanotubes are fabricated to enhance the desalination performance.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Engineering, Chemical
Dan Chen, Xiuzi He, Xin Chen, Zhong Wang, Xiaozhi Wang
Summary: In this study, AuAg bimetallic catalysts were prepared and the roles of Au and Ag in HCHO catalytic oxidation were investigated. It was found that the highest activity was observed for Au monometallic catalyst, and different oxidation reaction pathways were identified for Au and Ag active sites. The in-situ DRIFTS results revealed that Au active site was dominated by OH-assisted pathway, while Ag active site was dominated by Oa-assisted pathway.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Inorganic & Nuclear
Carlos D. S. da Silva, Kleber Q. Ferreira, Cassio S. Meira, Milena B. P. Soares, Raiana dos Anjos Moraes, Fenix Alexandra Araujo, Darizy Flavia Silva, Denise S. de Sa
Summary: This study characterized the synthesized complexes and found their ability to induce vasorelaxation in biological systems. The compounds showed no cytotoxic activity but exerted their effect through the production of nitric oxide.
DALTON TRANSACTIONS
(2023)
Article
Engineering, Chemical
Kaiwen Zha, Shipeng Wu, Zihao Zheng, Zhen Huang, Hualong Xu, Wei Shen
Summary: In this study, a series of treated halloysite-supported Fe-modified Co oxide catalysts were prepared, and it was found that the catalysts with 15 wt% Co loading and 2 wt% Fe modifications showed the best catalytic activity and tolerance to SO2 poisoning. The introduction of Fe not only improved the catalyst activity but also enhanced the tolerance to SO2 poisoning.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Physical
Xiaoyan Huang, Yanyan Liu, Hao Wen, Ruofan Shen, Sehrish Mehdi, Xianli Wu, Erjun Liang, Xianji Guo, Baojun Li
Summary: The research focuses on the development of high-efficient and economical bimetallic nanocatalysts for hydrogen evolution in NH3BH3 hydrolysis, demonstrating the significantly enhanced catalytic activity achieved by alloying Ru and Cu.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Applied
Xinchao Liu, Huan Liu, Lihua Chen, Baolian Su, Xinhuan Lu, Qinghua Xia, Dan Zhou
Summary: A highly efficient Ti-containing zeolite catalyst has been prepared by a two-step method, which shows enhanced catalytic activity due to its unique hollowness morphology and high content of active open Ti species. The effects of acid treatment and recrystallization on the zeolite have been thoroughly discussed.
Article
Chemistry, Physical
Akihiro Nakayama, Ryusei Sodenaga, Yuvaraj Gangarajula, Ayako Taketoshi, Toru Murayama, Tetsuo Honma, Norihito Sakaguchi, Tetsuya Shimada, Shinsuke Takagi, Masatake Haruta, Botao Qiao, Junhu Wang, Tamao Ishida
Summary: Cation-and anion-substituted hydroxyapatites (sHAPs) supported gold catalysts exhibit strong metal support interaction (SMSI) under oxidative atmosphere, enhancing the cationic properties of gold and increasing catalytic activity. Controlling the degree of SMSI allows for tuning the electronic state of metal nanoparticles and providing highly active and durable catalysts for target reactions.
JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Applied
Gabriele Grieco, Olivier Blacque
Summary: The reduction of several aromatic nitro compounds to amines using two novel catalytic systems under microwave irradiation showed higher TON and TOF compared to previous systems, but with a narrower reaction scope.
APPLIED ORGANOMETALLIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Mahdi Ahmadi Varzaneh, Hamid R. Memarian, Hadi Amiri Rudbari, Olivier Blacque
Summary: This study investigates the nucleophilic ability of substituted 5-aminopyrazoles and the type of dicarbonyl component in order to synthesise various pyrazolodihydropyridines and pyrazolodihydropyrimidines. The research proposes two possible reaction mechanisms to explain the impact of the nucleophilic positions in the 5-aminopyrazole molecule on the formation of different cyclocondensation products. The study also shows that the nucleophilicity of the C4-position, lone pairs of the N1-atom, NH2 group, and the acidity of the CH2 moiety in the beta-dicarbonyl compound all affect the reaction time and type of product formed. The experimental work is supported by H-1 and C-13 NMR data, as well as X-ray crystal structure analysis.
AUSTRALIAN JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Raphael Lengacher, Sandro Ott, Olivier Blacque, Henrik Braband, Roger Alberto
Summary: In this study, biologically relevant arenes ethyl salicylate and salicylic amide, as well as fluorescent coumarin and pyrene units, were functionalized with a cyclopentadiene unit. The Re and Tc-99m complexes of the modified coumarin and pyrene compounds were synthesized and characterized. Crystallization of the ligands resulted in [2+2] and [6+6] cycloadditions for the cyclopentadiene modified coumarin, with a proposed light-induced mechanism supported by DFT calculations.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Nicola Weder, Nora S. Grundmann, Benjamin Probst, Olivier Blacque, Rangsiman Ketkaew, Fabrizio Creazzo, Sandra Luber, Roger Alberto
Summary: The syntheses and mechanisms of two dinuclear Co-polypyridyl catalysts for the H-2 evolution reaction were reported and compared to their mononuclear analogue. The photocatalytic activity of the catalysts in water was investigated and the electrochemical properties were analyzed. The results showed that both catalysts exhibited high efficiency in H-2 production and the mechanism and kinetics of the reaction were determined.
Article
Chemistry, Inorganic & Nuclear
Harley D. Betts, Yih Ching Ong, Nicoleta Anghel, Sarah Keller, Johannes Karges, Niovi Voutsara, Joachim Muller, Eric Manoury, Olivier Blacque, Kevin Cariou, Andrew Hemphill, Gilles Gasser
Summary: This study reports the synthesis, characterization, and biological testing of some organometallic derivatives of the antiparasitic drug decoquinate for the treatment of toxoplasmosis. The derivatives reduced the proliferation of the parasite, with ferrocenylvinyl-DCQ and an oxygen-alkylated phenylvinyl-DCQ side product showing similar inhibitory effects as the parent drug.
Article
Chemistry, Inorganic & Nuclear
Robin Bolliger, Olivier Blacque, Henrik Braband, Roger Alberto
Summary: Oxidation of [Re(NCCH3)6]2+ with the thianthrene radical cation results in the formation of [Re(NCCH3)6]3+, a fully solvated +3 complex. It exhibits faster CH3CN exchange and can be used as a versatile precursor for ReIII chemistry.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Janvier Mukiza, Henrik Braband, Robin Bolliger, Qaisar Nadeem, Gratien Habarurema, Jurdas Sezirahiga, Tite Uwambajineza, Thomas Fox, Olivier Blacque, Roger Alberto
Summary: This study reported the aqueous synthesis of complexes of orotic acid and its derivatives with organometallic moieties, obtaining different metal complexes under different reaction conditions, with the structures confirmed using various methods.
INORGANICA CHIMICA ACTA
(2022)
Article
Chemistry, Multidisciplinary
Lamya H. Al-Wahaibi, Sekar Karthikeyan, Olivier Blacque, Amal A. El-Masry, Hanan M. Hassan, M. Judith Percino, Ali A. El-Emam, Subbiah Thamotharan
Summary: Two derivatives of [1,2,4]triazolo[3,4-b][1,3,4]thiadiazole were synthesized and their supramolecular self-assembly was analyzed using X-ray diffraction and theoretical tools. It was found that different substituents had specific effects on the intermolecular interactions and the energy of the molecular dimers. The study also revealed the selective inhibition of COX-2 targets by these compounds.
Article
Chemistry, Physical
Fatemeh Ebrahimi, Hamid Reza Memarian, Hadi Amiri Rudbari, Olivier Blacque
Summary: A series of 4-hydroxy- or 4-methoxy-substituted 1,3,5-triaryl-2-pyrazolines were synthesized and characterized by various spectroscopic techniques. Under UV light, these compounds undergo a non-oxidative photoreaction, resulting in the formation of aromatized pyrazole rings. Density functional theory calculations support an electron-transfer induced photoreaction mechanism.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Manuele D. Balestra, Omargeldi Atanov, Robin Lefevre, Olivier Blacque, Yat Hei Ng, Rolf Lortz, Fabian O. von Rohr
Summary: We report on the discovery, structural analysis, and physical properties of a previously unknown compound Nb4SiSb2, which undergoes a transition to a superconducting state at a critical temperature of approximately 1.6 K. We find that the addition of Cu, Pd, or Pt atoms into unoccupied sites in Nb4SiSb2 lowers the superconducting transition temperature.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Chemistry, Inorganic & Nuclear
Joshua Csucker, Da Kyung Jo, Qaisar Nadeem, Olivier Blacque, Thomas Fox, Henrik Braband, Roger Alberto
Summary: This work presents a straightforward method for the preparation of an isoindoline bridged [M(arene)(2)](+) (M = Re, Tc-99m) ansa-[3]arenophane. The intramolecular formation of an ansa-complex is accompanied by the intermolecular formation of a pair of isoindoline bridged macrocyclic dinuclear sandwich complexes, one of which exhibits axial chirality.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
Hamta Mosallaei, Hassan Hadadzadeh, Annette Foelske, Markus Sauer, Hadi Amiri Rudbari, Olivier Blacque
Summary: Water electrolysis is an efficient process for producing clean fuel. In this study, a novel Ru(ii)-Fe(ii) complex was synthesized and used to fabricate a RuO2-Fe2O3 nanocomposite. The prepared nanocomposite showed excellent electrocatalytic performance for water-splitting reactions, including hydrogen and oxygen evolution reactions, in alkaline solutions. The heterostructured RuO2-Fe2O3 nanocomposite can be considered as a bifunctional electrocatalyst for HER and OER due to the synergistic effects of the heterostructures and active sites at its interface.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
Maryam Taghizadeh Shool, Hadi Amiri Rudbari, Tania Gil-Anton, Jose V. Cuevas-Vicario, Begona Garcia, Natalia Busto, Nakisa Moini, Olivier Blacque
Summary: Ru(II) polypyridyl complexes are widely used in biological fields due to their physico-chemical and photophysical properties. The authors synthesized and characterized a series of new chiral Ru(II) polypyridyl complexes and analyzed their structures. The study revealed that dihalogenated ligands enhance the cytotoxicity of Ru(II) complexes and bromine provides the highest cytotoxicity. All complexes induced cell cycle arrest and apoptosis, while only the complexes with bromine increased intracellular ROS levels and mitochondrial dysfunction.
DALTON TRANSACTIONS
(2022)
Article
Crystallography
Asma Mani, Jamel Eddine Belgaied, Gilles Gasser, Olivier Blacque
Summary: In this study, a new complex crystal with a trivalent metal ion, hexafluorophosphate anions and a solvent molecule was reported. The crystal structure was determined by X-ray diffraction, revealing the presence of various intermolecular interactions.
ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Qaisar Nadeem, Federica Battistin, Olivier Blacque, Roger Alberto
Summary: A new synthesis method for sandwich type complexes, including functionalized arenes and pharmaceuticals, paves the way for molecular theranostics.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
