Article
Chemistry, Physical
L. Khan, Muhammad Ikram, Ali Haider, Anum Shahzadi, Anwar Ul-Hamid, Hameed Ullah, Sherdil Khan, Mohammed M. Algaradah, Hisham S. M. Abd-Rabboh, Walid Nabgan, Iram Shahzadi
Summary: In this study, carbon sphere and polyvinylpyrrolidone doped MnO2 nanorods were synthesized. The doping agents had an impact on the structural, morphological and optical characteristics of MnO2. The doped nanorods showed improved microbicidal effectiveness and catalytic performance, possibly achieved through the interaction with targeted enzymes.
SURFACES AND INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Zi-Zhong Chen, Jia-Gang Hou, Ji Zhou, Peng Huang, Hai-Qing Wang, Cai-Xia Xu
Summary: H-NiCoSex@C hollow NiCoSex nanospheres with carbon shell show superior lithium storage performance, maintaining large reversible capacity and high capacity retention due to its robust hollow core-shell structure and enhanced electrical conductivity and ion transport.
Article
Nanoscience & Nanotechnology
Peitao Hu, Shun Dong, Fang Yuan, Xiutao Li, Changqing Hong
Summary: In this study, a superior microwave absorbent consisting of NiCo2S4 nanosheets anchored on hollow carbon spheres was successfully designed and fabricated for the first time by a low-cost and facile strategy. The obtained C/NiCo2S4 composite showed excellent absorption performance with a minimum reflection loss of -65.10 dB and an effective absorption bandwidth of 6.60 GHz at a thin thickness of 1.75 mm. The presence of NiCo2S4 nanosheets balanced the impedance matching property and enhanced the dielectric loss effectively, while the cavity structure promoted multiple reflections of the electromagnetic wave, increasing the material's energy loss capacity.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2022)
Article
Chemistry, Analytical
Li Zhang, Jiejun Li, Yaqi Yang, Chenxi Wang, Yilin Wang, Pengcheng Zhao, Yixi Xie, Junjie Fei
Summary: This study proposes a sensor for dihydroxybenzene isomers based on mesoporous carbon hollow spheres/zeolitic imidazolate frameworks-derived Co-embedded N-doped carbon nanotubes (MCHSs/Co@N-CNTs). The sensor exhibits excellent conductivity and electro-catalytic properties, enabling simultaneous electrochemical detection of phenolic compounds. Under optimized conditions, the sensor shows a wide linear range and low detection limits. Density functional calculations help reveal the reaction sites and mechanism of phenolic compounds. The sensor also demonstrates satisfactory results in detecting phenolic compounds in environmental water samples.
MICROCHEMICAL JOURNAL
(2023)
Article
Electrochemistry
Xianchao Wang, Weirong Li, Yongchao Xu, Yanqin Xue, Dapeng Si, Runcheng Zhu, Junnan Liu, Chunliang Zhou, Ye Chen, Guiling Wang
Summary: NiCoP/C electrodes with hollow structure prepared by solvent thermal method and low temperature phosphorylation method exhibit excellent electrochemical performance. The NiCoP/C electrode shows high specific capacity and low capacity loss at high current density, and the ASC device composed of NiCoP/C and activated carbon demonstrates high energy density and good cycling stability.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Multidisciplinary
Meng Shao, Ningxiang Wu, Tianming Chen, Xu Han, Yu Shen, Weina Zhang, Bing Zheng, Sheng Li, Fengwei Huo
Summary: Compared with solid alkali metal anodes (Li, Na, K), liquid metal anodes (LMAs) have unique advantages such as self-healing property and no dendrites, enabling high-energy batteries. Among LMAs, liquid Na-K alloy anode has received attention due to its high theoretical capacity, low redox potential, and formation at room temperature. However, utilizing liquid Na-K alloy as an electrode is challenging, especially at room temperature with high surface tension. In this study, an amorphous hollow carbon film (AHCF) consisting of hollow spheres with significant surface defects was designed to quickly infiltrate Na-K liquid alloy at room temperature, forming a composite electrode (Na-K@AHCF). The Na-K@AHCF symmetric cell exhibited a cycle lifespan of up to 400 hours at 0.1 mA/cm2 and demonstrated stable stripping/deposition even at 5 mA/cm2. When combined with sulfurized polyacrylonitrile (SPAN) cathode material, the resulting K-S full cell showed good cycle stability and rate performance.
CHINESE CHEMICAL LETTERS
(2023)
Article
Chemistry, Applied
Tetsuo Umegaki, Carlos A. Castilla-Martinez, Jim Cartier, Didier Cot, Umit B. Demirci
Summary: Calcined silica hollow spheres were used as porous scaffolds for the composite materials of ammonia borane and silica. Through pyrolysis, ammonia borane was transformed into polyborazylene and boron nitride, resulting in porous composite materials. The composite PB@SHS contains polyborazylene and B-O bonds, while BN@SHS contains boron nitride, B-O bonds, and possibly a Si-O-B interface and silica. Preliminary results showed that BN@SHS has the potential to improve the CO2 adsorption properties of the calcined silica hollow spheres.
JOURNAL OF POROUS MATERIALS
(2022)
Article
Chemistry, Physical
Fang Zhang, Shuang Zong, Yue Zhang, Haijun Lv, Xinying Liu, Juan Du, Aibing Chen
Summary: By utilizing mesoporous silica template to prepare N-doped HCS, direct carbon formation can be achieved, simplifying the preparation process. The thickness of the HCS shell, morphology, and surface properties can be adjusted, leading to high electrochemical performance as an active electrode material in supercapacitors.
JOURNAL OF POWER SOURCES
(2021)
Article
Energy & Fuels
Ananya Pal, Prashanta Pal, Mahasweta Nandi
Summary: Hollow porous carbon spheres (HPCS) were synthesized using spherical silica nanoparticles as templates. The samples were characterized and HPCS-II showed the highest specific capacitance and superior electrochemical stability. The synthetic strategy involved using a hard template to create void spherical cores and space confinement to develop shells. The electrochemical behavior of HPCS-II is believed to be mainly due to electrical double-layer capacitance.
Article
Chemistry, Multidisciplinary
Fei Xing, Tao Liu, Yanbin Yin, Ran Bi, Qi Zhang, Likun Yin, Xianfeng Li
Summary: By using a hollow porous carbon sphere as a catalyst, the polarization loss of vanadium flow batteries can be reduced, resulting in a higher energy efficiency and power density.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Yuebing Wang, Guanghua Tan, Qingfeng Yi, Can Fang, Ruowei Yi
Summary: With the growth of the energy crisis, the proton-exchange membrane fuel cell (PEMFC) is gaining attention as a green energy source. Researchers have synthesized a low Pt-loading carbon-based catalyst (pCN@NHCS-Fe/Pt-280) with hollow carbon spheres (HCSs), metal-organic frameworks (MOFs), and carbon nanotubes (CNTs) structure. This catalyst shows comparable performance to the benchmark Pt/C catalyst, demonstrating its potential for the development of low-Pt-loaded oxygen reduction reaction (ORR) catalysts.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Akbar Mohammadi Zardkhoshoui, Bahareh Ameri, Saied Saeed Hosseiny Davarani
Summary: Mixed metal selenides have attractive structural characteristics and unique physicochemical properties, making them promising electrode materials for energy storage devices. Multi-shelled nickel-manganese selenide hollow spheres and double-shell nickel-iron selenide hollow spheres were successfully fabricated for supercapacitors, demonstrating excellent electrochemical performance and desirable longevity.
Article
Chemistry, Physical
Xiaofa Su, Sifang Li
Summary: A new type of PVP-stabilized bimetallic Co-Ni nanoparticles as catalyst for hydrogen production from methanolysis of ammonia borane showed good catalytic performance, magnetic recyclability, and synergistic effect between Co and Ni.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Mariyam Niyaz, Ruxangul Jamal, Tursun Abdiryim, Abdukeyum Abdurexit, Haile Liu, Hujun Zhang, Shuyue Xie, Yajun Liu, Yaolong Zhang
Summary: An effective anode electrocatalyst prepared by distributing PtCu nanoparticles on poly(EDOT-pyridine-EDOT) and poly(EDOT-pyridazine-EDOT) composited double-layered hollow carbon spheres shows favorable performance in methanol oxidation.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Energy & Fuels
Qing Wang, Shasha Wang, Wuxin Liu, Dengyang Wang, Shaohua Luo, Pengqing Hou, Meng Zhou, Yahui Zhang, Shengxue Yan, Xin Liu
Summary: This paper investigates the use of nitrogen-doped activated hollow carbon nanospheres (N-AHCSs) as anodes for potassium-based dual-ion batteries (KDIBs). The N-AHCSs demonstrate impressive cyclic performance and rate capability, making them a promising candidate material for KDIBs.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Multidisciplinary
Pumza Mente, Victor Mashindi, Alice Magubane, Tumelo N. Phaahlamohlaka, Prakash M. Gangatharan, Roy P. Forbes, Neil J. Coville
Summary: A vapour phase flow system was used to study the hydrogenation of cinnamaldehyde using cobalt catalysts supported inside and outside hollow carbon spheres (HCSs). The results showed that the Co@HCS catalyst exhibited better conversion and product selectivity compared to the Co/HCS catalyst. Catalyst particle size and reaction temperature were found to affect the efficiency of the reaction.
CANADIAN JOURNAL OF CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Joyce B. Matsoso, Nikolas Antonatos, Pradip Roy Kumar, Cameron Jellett, Vlastimil Mazanek, Catherine Journet, Zdenek Sofer
Summary: This study investigates the influence of heteroatom domains on the volatile organic compound (VOC) detection properties of B/N co-doped graphene oxide nanostructures, showing that the choice of boron and nitrogen sources affects bonding configurations and lattice morphology, resulting in different responses to methanol and ethanol vapours. Co-doping promotes better stability and selectivity, highlighting the significance of B and N configurations for charge carrier transport properties in graphene nanostructures for VOC sensing devices at room temperature.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Electrochemistry
Bhupender Pal, Joyce Boitumelo Matsoso, Abhilash Karuthedath Parameswaran, Pradip Kumar Roy, Dekanovsky Lukas, Jan Luxa, Petr Marvan, Jalal Azadmanjiri, Zdenek Hrdlicka, Rajan Jose, Zdenek Sofer
Summary: This study develops a flexible, ultralight, freestanding electrochemical capacitor using a composite of cellulose/SWCNTs electrode films and a new cellulose/NaHSO₄ hydrogel electrolyte. It takes advantage of the renewability and flexibility of cellulose combined with the high conductivity and storage capacity of SWCNTs to achieve high specific capacitance, energy, and power density. The new cellulose/NaHSO₄ hydrogel electrolyte provides stable cycling and non-leakage device performance.
ELECTROCHIMICA ACTA
(2022)
Article
Materials Science, Multidisciplinary
Ludwe L. Sikeyi, Laercia R. Bila, Themba D. Ntuli, Cyril T. Selepe, Nobanathi W. Maxakato, Neil J. Coville, Manoko S. Maubane-Nkadimeng
Summary: This study presents the synthesis of Pt supported on titania oxide nanoparticles decorated on sulfur doped onion-like carbon nanoparticles (S-OLCNs) and their application as electrocatalysts for ammonia oxidation reactions. The incorporation of TiO2 nanoparticles into Pt/S-OLCN was found to significantly enhance the activity of Pt for the ammonia oxidation reaction by facilitating the electron transfer process. Pt/TiO2/S-OLCN also exhibited better long term stability and faster charge transfer resistance compared to other catalysts tested.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Electrochemistry
B. Shaku, T. P. Mofokeng, N. J. Coville, K. I. Ozoemena, M. S. Maubane-Nkadimeng
Summary: This study presents the conversion of marula nutshell waste into nitrogen-doped activated carbon (N-ACs) for supercapacitor electrode material. The N-ACs demonstrated high surface area and porosity, resulting in excellent electrochemical performance in KOH and KNO3 electrolytes. The material achieved remarkable energy and power densities in 2.5 M KNO3 electrolyte, making it a promising energy storage material for supercapacitors.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Multidisciplinary
Ryan O'Connor, Joyce B. Matsoso, Victor Mashindi, Pumza Mente, Lebohang Macheli, Beatriz D. Moreno, Bryan P. Doyle, Neil J. Coville, Dean H. Barrett
Summary: In this study, the influence of counter anion on the structural properties of hollow carbon spheres (HCS) support was investigated. It was found that the thickness of the HCS shell depended on the type of nickel precursor salt used. The choice of precursor salt also affected the textural properties of the HCS nanosupports and influenced the growth of nickel nanoparticles.
Review
Optics
Orlette Mkhari, Themba D. Ntuli, Neil J. Coville, Edward N. Nxumalo, Manoko S. Maubane-Nkadimeng
Summary: Carbon dot/support nanocomposites exhibit improved properties and hold great potential for applications in fields such as photocatalysis, electrochemistry, optics, and nanomedicine.
JOURNAL OF LUMINESCENCE
(2023)
Article
Chemistry, Physical
Djalila Guettaia, Hanane Zazoua, Mohammed Reda Ramdani, Khaldoun Bachari, Neil J. Coville, Amel Boudjemaa
Summary: This paper reports on the photodegradation of ibuprofen (IBP) using SiO2@xTiO(2) synthesized via a hydrothermal method. The catalysts were prepared by adding TiO2 to a Stober synthesized silica at different weight loadings. The SiO2@xTiO(2) showed excellent photodegradation efficiency and the degradation rate of IBP increased with the formation of H2O2.
REACTION KINETICS MECHANISMS AND CATALYSIS
(2023)
Article
Chemistry, Multidisciplinary
Themba D. Ntuli, Ludwe L. Sikeyi, Faria Dziike, Neil J. Coville, Edward N. Nxumalo, Manoko S. Maubane-Nkadimeng
Summary: Waste cooking oil was converted into onion-like nanocarbons (OLNCs) through flame pyrolysis and then combined with TiO2 to form TiO2/OLNC nanocomposites using hydrothermal treatment. The mass ratio of TiO2 to OLNCs was varied, while the mass of TiO2 was kept constant. The nanocomposites exhibited enhanced photocatalytic activity and degradation efficiency for methyl orange due to the high adsorption efficiency of OLNCs and the hindrance of electron-hole recombination.
APPLIED SCIENCES-BASEL
(2023)
Review
Chemistry, Physical
Lerato L. Mokoloko, Roy P. Forbes, Neil J. Coville
Summary: Since their discovery in 2004, carbon dots (CDs) have been widely used in various applications due to their fluorescent properties. However, the potential uses of CDs as catalysts and supports in catalytic reactions are still relatively unexplored. Studies have shown the advantages of using CDs in catalysis, but there are challenges associated with their stability and aggregation due to their small size.
Article
Chemistry, Multidisciplinary
Lerato L. Mokoloko, Joyce B. Matsoso, Nikolas Antonatos, Vlastimil Mazanek, Beatriz D. Moreno, Roy P. Forbes, Dean H. Barrett, Zdenek Sofer, Neil J. Coville
Summary: This study presents the application of N-doped carbon nanosheets for room temperature chemoresistive detection of methanol and ethanol. The nanosheets were made by heat treatment of N-doped carbon dots and showed good sensitivity and low detection limits for both alcohols. The composite nature and large basal area of the nanosheets facilitated easy adsorption of the analyte molecules.
Article
Engineering, Electrical & Electronic
Othmane Mouane, Elias Sideras-Haddad, Edward Nkadimeng, Ryan Mckenzie, Roger Van Rensburg, Charles Sandrock, Bruce Mellado, Neil J. Coville
Summary: This study reports the enhancement of heat transfer using a commercial thermal compound after incorporating carbon nanomaterials. The results showed that the incorporation of 1% carbon nanomaterials led to the highest heat transfer performance, with a temperature drop of 2℃.
IEEE TRANSACTIONS ON NANOTECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Lerato L. Mokoloko, Roy P. Forbes, Neil J. Coville
Summary: In this study, solid hydrophobic carbon dots and carbon spheres were synthesized directly using a vertical chemical vapour deposition reactor. The carbon dots and carbon spheres were found to originate from different carbon building blocks. The carbon dots were obtained through the reaction of acetylene and Ar mixtures at high flow rates and temperatures, while the carbon spheres were synthesized through a different pathway and had a typical spherical layered structure without a graphitic core.
SOUTH AFRICAN JOURNAL OF CHEMISTRY-SUID-AFRIKAANSE TYDSKRIF VIR CHEMIE
(2022)
Article
Chemistry, Multidisciplinary
Thomas H. Mongwe, Themba D. Ntuli, Ludwe L. Sikeyi, Neil J. Coville, Messai A. Mamo, Jose P. M. Serbena, Manoko S. Maubane-Nkadimeng
Summary: This study reports on the synthesis of carbon nano-onions and nitrogen-doped carbon nano-onions, and their application in gas sensing materials. The results showed that the composite based on pristine CNOs exhibited higher sensitivity to acetone, while the sensor based on N-CNOs had a lower limit of detection.
SOUTH AFRICAN JOURNAL OF CHEMISTRY-SUID-AFRIKAANSE TYDSKRIF VIR CHEMIE
(2022)
Article
Chemistry, Physical
Mei Gui Vanessa Wee, Amutha Chinnappan, Runxin Shang, Poh Seng Lee, Seeram Ramakrishna
Summary: Cooling processes, from residences to industries, require a lot of energy and are essential. This study introduces MIL-101(Cr), a new desiccant, to heat exchangers for more efficient cooling. By improving the synthesis method and using a special binder, the MIL-101(Cr)-coated heat exchanger shows improved water uptake capacity and lower regeneration temperature.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Ao Zhen, Guanyu Zhang, Ao Wang, Feng Luo, Jiehua Li, Hong Tan, Zhen Li
Summary: In this study, a solvent-free microemulsion method was used to synthesize waterborne polyurethane (WPU) material with high retention of mechanical properties and satisfactory water absorption rates. The material showed excellent biocompatibility and has broad application potential in the field of biomedicine.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Review
Chemistry, Physical
Wensong Ge, Rui Wang, Xiaoyang Zhu, Houchao Zhang, Luanfa Sun, Fei Wang, Hongke Li, Zhenghao Li, Xinyi Du, Huangyu Chen, Fan Zhang, Huifa Shi, Huiqiang Hu, Yongming Xi, Jiankang He, Liang Hu, Hongbo Lan
Summary: This paper reviews the research on the surface tension of eutectic gallium-indium alloys (EGaIn) in the field of stretchable electronics. It covers the principles of oxide layer formation, factors influencing surface tension, and methods for surface modification of liquid metals. The paper also discusses the applications of EGaIn surface modification in different fields and highlights the challenges still faced and the future outlook.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Review
Chemistry, Physical
Xiang Song, Lianghao Jia, Zhengen Wei, Tao Xiang, Shaobing Zhou
Summary: This paper provides an overview of the application, preparation, and role of biomimetic structures in solar evaporators with improved evaporation rate and lifetime.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Wei Yuan, Qian Deng, Dong Pan, Xiang An, Canyang Zhao, Wenjun Su, Zhengmin He, Qiang Sun, Ran Ang
Summary: Optimizing the performance of n-type PbTe thermoelectric materials is crucial for practical applications. Dynamic doping has emerged as an effective method to improve the performance of n-type PbTe by optimizing the carrier concentration. This study demonstrates the significance of Mn alloying in enhancing the performance of Ag-doped n-type PbTe by creating a hierarchical structure to suppress thermal transport and improving the Seebeck coefficient.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Review
Chemistry, Physical
Xiaoyan Wang, Meiqi Geng, Shengjun Sun, Qian Xiang, Shiyuan Dong, Kai Dong, Yongchao Yao, Yan Wang, Yingchun Yang, Yongsong Luo, Dongdong Zheng, Qian Liu, Jianming Hu, Qian Wu, Xuping Sun, Bo Tang
Summary: This review provides a comprehensive analysis of the progress and challenges in the field of bifunctional electrocatalysts and efficient electrolyzers for seawater splitting. It summarizes recent advancements and proposes future perspectives for highly efficient bifunctional electrocatalysts and electrolyzers.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Jason K. Phong, Christopher B. Cooper, Lukas Michalek, Yangju Lin, Yuya Nishio, Yuran Shi, Huaxin Gong, Julian A. Vigil, Jan Ilavsky, Ivan Kuzmenko, Zhenan Bao
Summary: Dynamic block copolymers (DBCPs) combine the phase separation of traditional block copolymers with the supramolecular self-assembly of periodic dynamic polymers, resulting in the spontaneous self-assembly of high aspect ratio nanofibers with well-ordered PEG and PDMS domains. DBCPs with a periodic block sequence exhibit superior properties compared to those with a random sequence, including delayed onset of terminal flow and higher ionic conductivity values.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Hong Kyu Lee, Yasaswini Oruganti, Jonghyeon Lee, Seunghee Han, Jihan Kim, Dohyun Moon, Min Kim, Dae-Woon Lim, Hoi Ri Moon
Summary: This study reports the moisture-triggered proton-conductivity switching behavior in Zn5FDC MOFs induced by the presence and absence of coordinating solvents, which illustrates the significant role of coordinating solvents in conductivity variation.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Bommaramoni Yadagiri, Sanjay Sandhu, Ashok Kumar Kaliamurthy, Francis Kwaku Asiam, Jongdeok Park, Appiagyei Ewusi Mensah, Jae-Joon Lee
Summary: The molecular engineering of the interface modulator between the perovskite and hole transporting material is crucial for achieving satisfactory performance and stability of perovskite solar cells. In this study, cruciform-shaped dual functional organic materials were employed as surface passivation and hole transporting interfacial layers in perovskite solar cells. The use of these materials significantly improved the power conversion efficiency of the solar cells.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Joaquin Martinez-Ortigosa, Reisel Millan, Jorge Simancas, Manuel Hernandez-Rodriguez, J. Alejandro Vidal-Moya, Jose L. Jorda, Charlotte Martineau-Corcos, Vincent Sarou-Kanian, Mercedes Boronat, Teresa Blasco, Fernando Rey
Summary: This study investigates the synthesis of all-silica RTH zeolites using triisopropyl(methyl)phosphonium as the organic SDA. The results show the formation of two distinct crystalline phases under different synthesis conditions, with fluoride bonding to different silicon sites. It demonstrates the possibility of controlling the placement of fluoride in RTH zeolites through synthesis conditions.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Luyao Zheng, Cong Liu, Wenbiao Zhang, Boxu Gao, Tianlan Yan, Yahong Zhang, Xiaoming Cao, Qingsheng Gao, Yi Tang
Summary: This study successfully improves the efficiency and stability of water splitting by constructing a heterostructured electrocatalyst. The catalyst shows extraordinary performance and could offer an effective approach for the sustainable production of hydrogen.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Carlos A. Campos-Roldan, Raphael Chattot, Frederic Pailloux, Andrea Zitolo, Jacques Roziere, Deborah J. Jones, Sara Cavaliere
Summary: This study systematically evaluated the hydrogen evolution/oxidation reactions on a series of Pt-rare earth nanoalloys in alkaline media, and identified the effect of the lanthanide contraction. The experimental results revealed that the chemical nature of the rare earth modulates the adsorption and mobility of oxygenated-species, enhancing the kinetics of the reactions.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Sara Frank, Mads Folkjaer, Mads L. N. Nielsen, Melissa J. Marks, Henrik S. Jeppesen, Marcel Ceccato, Simon J. L. Billinge, Jacopo Catalano, Nina Lock
Summary: This study investigates the thermal decomposition of ZIF-67 and its correlation with structural evolution and electrocatalytic performance. The researchers used in situ X-ray absorption spectroscopy and total scattering techniques to analyze the process. They found that disorder emerges at lower temperatures and that extending the pyrolysis process can result in materials with superior electrochemical properties.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Zi-Yang Zhang, Hao Tian, Han Jiao, Xin Wang, Lei Bian, Yuan Liu, Nithima Khaorapapong, Yusuke Yamauchi, Zhong-Li Wang
Summary: By constructing Cu-0-Cu+-NH2 composite interfaces with the assistance of SiO2, the electrochemical CO2 reduction reaction (CO2RR) achieves high Faraday efficiency and current density for C2+ production, improving the productivity of carbon cycle.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Ting Wang, Ruijuan Zhang, Pengda Zhai, Mingjie Li, Xinying Liu, Chaoxu Li
Summary: This study successfully exfoliated COFs using a simple electrochemical method, which resulted in improved photocatalytic performance for COFs and enriched the fabrication approach of COF exfoliation.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)