Article
Chemistry, Physical
Theophile Niyitanga, Haekyoung Kim
Summary: In this study, bimetallic copper-cobalt oxide nanoparticles embedded on nitrogen-doped reduced graphene oxide substrates were fabricated as catalysts for the oxygen evolution reaction and hydrogen evolution reaction. The synthesized catalyst exhibited outstanding electrochemical activity, comparable to Pt/C and IrO2, and showed promise as a bifunctional catalyst for overall water splitting.
JOURNAL OF POWER SOURCES
(2023)
Article
Engineering, Environmental
Deyao Xu, Xuanda Long, Juanxiu Xiao, Zhiliang Zhang, Guiyu Liu, Haixia Tong, Zeng Liu, Neng Li, Dong Qian, Junhua Li, Jinlong Liu
Summary: Constructing CoO-CoSe2 heterostructures through partial selenization of CoO and using reduced graphene oxide as a platform, a novel hybrid material (CoO-CoSe2@N-CNTs/rGO) with excellent electrocatalytic performance for oxygen evolution reaction was successfully fabricated. The exceptional performance is attributed to the synergistic effect between CoO and CoSe2, N doping effect in CNT and rGO, and the confining effect of N-CNTs and rGO for CoO-CoSe2, resulting in more active sites and enhanced conductivity.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Zhixiang Cui, Jixin Lin, Jiahui Wu, Jiaqi Yu, Junhui Si, Qianting Wang
Summary: A novel nanocomposite of N-doped CoP nanoparticles embedded in porous carbon nanofibers has been synthesized, showing outstanding electrocatalytic properties for oxygen evolution reaction. This material has the potential for cost-effective and high-efficiency applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Environmental
Theophile Niyitanga, Haekyoung Kim
Summary: In this study, a trimetallic CuxMox/Co1_xO nanoparticle catalyst grown on reduced graphene oxide was fabricated for the oxygen evolution reaction (OER). The catalyst exhibited outstanding electrochemical activity for the OER due to the conductive network provided by reduced graphene oxide and the additional active sites from the Cu and Mo dopants. This study provides a novel strategy for the development of efficient OER electrocatalysts for large-scale applications.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Fatima Nasim, Hassan Ali, Amir Waseem, Muhammad Amtiaz Nadeem, Muhammad Arif Nadeem
Summary: A non-noble metal-based catalyst with comparable activity to conventional noble metal catalysts is successfully synthesized through a simple synthetic strategy. Acid treatment significantly enhances the electrocatalytic activity, and the catalyst demonstrates excellent durability and methanol tolerance. The enhanced activity is attributed to the synergistic effect of the carbon matrix and encapsulated nanoparticles.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Energy & Fuels
Guoru Li, Xiaoting Yu, Fengxiang Yin, Zhiping Lei, Xinran Zhao, Xiaobo He, Zhichun Li
Summary: By doping Te into spinel Co3O4 catalysts, this study successfully reduced the overpotential of the oxygen evolution reaction and increased the efficiency of water splitting. The lattice distortion caused by Te doping resulted in smaller Te-Co3O4 particles with larger surface area for better accessibility of active sites, while the introduction of oxygen vacancies modified the electronic structure and improved the density of active sites. The overall effects contributed to enhanced reaction kinetics and minimized overpotentials in high-performance electrocatalysis.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Review
Chemistry, Inorganic & Nuclear
Asim Shahzad, Faiza Zulfiqar, Muhammad Arif Nadeem
Summary: This review focuses on cobalt-based bimetallic ZIFs and discusses their advantages, synthesis and modification methods, derived compounds, synergistic effects, and activity of electrocatalysts during OER. Cobalt-based bimetallic ZIFs exhibit better water oxidation performance and stability compared to monometallic ZIFs. The application of bimetallic ZIFs and their derivatives in oxygen evolution reaction has sparked significant interest in this field. Finally, the future prospective of bimetallic ZIF-derived carbon-based materials for OER electrocatalysis is briefly discussed.
COORDINATION CHEMISTRY REVIEWS
(2023)
Article
Materials Science, Multidisciplinary
Miao Wang, Yun Zhang, Tao Peng, Mohan Kumar, Qi-Tao Zhang, Wei Zhao
Summary: The study successfully synthesized Fe3C@CNTs with excellent catalytic performance through a simple and economical method, showing high activity and stability in alkaline oxygen evolution reaction.
DIAMOND AND RELATED MATERIALS
(2021)
Article
Energy & Fuels
Shaojie Shi, Biaolong Wang, Yifei Wang, Yanmin Yang, Zhiguo Zhang, Yousheng Xu, Yange Suo
Summary: The rational design and preparation of bifunctional electrocatalysts with high catalytic performance for both ORR and OER are crucial for the development of fuel cells and regenerative metal-air cells. In this work, a simple compound-assisted pyrolyzing strategy is reported to synthesize Co-N-C materials by high-temperature annealing of ZIF-12, and the results demonstrate the importance of optimal pore structure, higher carbon defect content, and higher Co-N-x concentration for improving the electrochemical performances of the Co-N-C catalysts.
Article
Materials Science, Multidisciplinary
Guanzhou Li, Yangchang Mu, Zongxiong Huang, Naiguang Wang, Yuanye Chen, Jun Liu, Guoping Liu, Oi Lun Li, Minhua Shao, Zhicong Shi
Summary: A poly-active centric Co3O4-CeO2/Co-N-C catalyst with high oxygen reduction reaction (ORR) catalytic activity was prepared and showed excellent performance in Zinc-air batteries, attributed to the synergistic effect among Co3O4, CeO2, and Co-N-C, outstanding electrical conductivity, and large surface area. This catalyst has great potential in the application of metal-air batteries due to its high catalytic activity, environmental friendliness, and facile synthesis process.
SCIENCE CHINA-MATERIALS
(2021)
Article
Chemistry, Physical
Wenzhuo Zhang, Guangyi Chen, Yunyun Du, Shaoli Zhu, Jiancheng Zhang, Guangfei Liu, Feiyue Zhang, Shuai Wang, Xiaolong Wang
Summary: Reasonable optimization of crystal structure and composite is an effective strategy to enhance the electrocatalytic activity of transition metal oxides. In this study, Fe-doped amorphous CoO was fabricated as an oxygen evolution reaction (OER) catalyst through a facile reduction reaction at room temperature. The optimized catalyst showed excellent OER activity, requiring only a low overpotential to achieve a high current density. The high activity can be attributed to the combined advantages of the amorphous structure and the doped Fe element.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Huan Gao, Fengqi Han, Shasha Yi, Lu Chen, Deliang Chen
Summary: A new approach has been developed to address the poor conductivity and insufficient active sites of perovskite oxide electrocatalysts. By exsolution of CoFe nanoparticles from parent phase BSCF, the catalyst exhibits enhanced oxygen evolution reaction activity and stability in alkaline solution.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
Tianyang Li, Zhikun Xu, Shuangyan Lin
Summary: Rational design and controllable synthesis of metal-organic frameworks nanosheets are crucial for electrochemical catalysis. In this study, a carnation-like ZIF-9 nanostructure was successfully synthesized on nickel foam using a simple one-step solvothermal method. The morphology evolution and electrocatalytic properties of oxygen evolution were investigated by controlling the solvothermal time. The ZIF-9-d/NF (60 h) electrode exhibited efficient electrocatalytic activity for oxygen evolution reaction with low overpotentials, as well as excellent stability.
Article
Engineering, Chemical
Renjun Zhao, Xuesong Liu, Kuan Deng, Wen Tian, Kui Ma, Shuai Tan, Hairong Yue, Junyi Ji
Summary: This study presents a simple yet rational composite electrode construction strategy involving the preparation of Mo-/Ni-/Fe ternary transition metal composites via hydrothermal treatment, hydrogenation, and sulfurization. The resulting electrodes exhibit excellent catalytic performance and stability in electrocatalytic reactions, showing great potential for broad application prospects.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Chemistry, Physical
S. V. Prabhakar Vattikuti, K. C. Devarayapalli, Nanda Kumar Reddy Nallabala, Thi Nhung Nguyen, Nam Nguyen Dang, Jaesool Shim
Summary: The carbon and nitrogen derived from ZIF-8 embedded in TiO2/Fe2O3 nanostructures showed superior electrocatalytic performance in oxygen evolution reactions, hydrogen evolution reactions, and overall H2O splitting. The C,N-ZIF/TiFe nanostructure was the best catalyst compared to other nanostructures, indicating a promising potential for groundbreaking and novel applications in fuel cells.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Analytical
Muhammad Altaf Nazir, Tayyaba Najam, Kinza Zarin, Khurram Shahzad, Muhammad Sufyan Javed, Muhammad Jamshaid, Muhammad Aswad Bashir, Syed Shoaib Ahmad Shah, Aziz Ur Rehman
Summary: ZIF-67 and Ni-doped ZIF-67 are robust and porous adsorbents that can effectively adsorb organic dyes from water, with the Ni-doped ZIF-67 nanocomposite showing the best adsorption performance under mild acidic conditions.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2023)
Article
Biochemistry & Molecular Biology
Amna Altaf, Manzar Sohail, Ayman Nafady, Rashid G. Siddique, Syed Shoaib Ahmad Shah, Tayyaba Najam
Summary: The depletion of fossil fuels and environmental pollution has driven scientists to develop renewable and green energy sources. Photocatalytic water splitting is an effective strategy for producing clean hydrogen fuel in the emerging hydrogen economy. In this study, the photocatalyst (PdO.TiO2) was introduced to accelerate the oxygen evolution reaction (OER) in a photoelectrochemical system. The catalyst demonstrated a significant increase in current density from 0.89 mA/cm2 (dark) to 4.27 mA/cm2 (light) during OER at an applied potential of 0.5 V. With a Tafel slope of 170 mVdec(-1) and an efficiency of 0.25% at 0.93 V, the synthesized PdO.TiO2 material showed promising photocatalytic activity, encouraging further exploration of related catalysts for facilitating OER.
Review
Chemistry, Physical
Muhammad Sufyan Javed, Tayyaba Najam, Iftikhar Hussain, Muhammad Idrees, Awais Ahmad, Muhammad Imran, Syed Shoaib Ahmad Shah, Rafael Luque, Weihua Han
Summary: Zn-ion hybrid supercapacitors (ZHSCs) combine Zn-ion batteries with supercapacitors to meet the energy and power needs of portable devices and electric automobiles. This review provides an in-depth investigation and summarization of the charge storage mechanisms, advantages/disadvantages, recent development of cathode materials, and new design of device fabrications for ZHSCs, highlighting the importance of developing new cathode materials.
ADVANCED ENERGY MATERIALS
(2023)
Review
Biochemistry & Molecular Biology
Syed Shoaib Ahmad Shah, Naseem Ahmad Khan, Muhammad Imran, Muhammad Rashid, Muhammad Khurram Tufail, Aziz ur Rehman, Georgia Balkourani, Manzar Sohail, Tayyaba Najam, Panagiotis Tsiakaras
Summary: The hydrogen evolution reaction (HER) is a promising technology for delivering clean energy using renewable sources. The use of transition metal tellurides (TMTs) and transition metal phosphides (TMPs) as electrocatalysts has emerged as a highly efficient, low-cost, and stable alternative to platinum-based catalysts. This review focuses on the progress made in the past decade, providing a detailed summary of their development and offering guidelines for the design of new electrocatalysts for energy conversion and storage technologies.
Article
Chemistry, Analytical
Misbah Malik, Sobhy M. Ibrahim, Asif A. Tahir, Muhammad Altaf Nazir, Syed Shoaib Ahmad Shah, Muhammad Ahmad Wattoo, Rehana Kousar, Aziz Ur Rehman
Summary: The photocatalytic degradation of nicotine in aqueous medium was studied using g-C3N4/ZnO-W/Sn-x composites. The synthesized composites showed a proficient blending of g-C3N4, metal oxide and the metal used as dopant. The optical analysis demonstrated band gap tailoring with increased dopant metal content, which inhibited electron hole pair recombination and resulted in increased production of ROS species, leading to significant increase in photoactive nicotine degradation.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2023)
Review
Chemistry, Physical
Farooq Ahmad, Khezina Rafiq, Tayyaba Najam, Ejaz Hussain, Manzar Sohail, Muhammad Zeeshan Abid, Azhar Mahmood, Muhammad Sufyan Javed, Syed Shoaib Ahmad Shah
Summary: The performance of electrocatalysts can be enhanced by increasing the number of active sites, ligand engineering, and integrating metals and developing MOFs composites. This study discusses the electrocatalytic activities, stability, and selectivity of MOF-based catalysts for HER and OER. Overall, MOF-based electrocatalysts show great potential in advancing efficient and sustainable electrochemical energy storage and conversion technologies. The complications and future perspectives of emerging MOFs as electrocatalysts are also critically discussed.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Materials Science, Multidisciplinary
Syed Shoaib Ahmad Shah, Muhammad Sufyan Javed, Tayyaba Najam, Muhammad Altaf Nazir, Aziz ur Rehman, Abdul Rauf, Manzar Sohail, Francis Verpoort, Shu-Juan Bao
Summary: This article provides a comprehensive explanation of the designed fabrication of COFs for heterogeneous catalysis and discusses the advantageous features of COFs as catalysts. It also highlights the active sites in COFs and presents future perspectives and challenges.
Article
Chemistry, Physical
Aqsa Anum, Muhammad Altaf Nazir, Sobhy M. Ibrahim, Syed Shoaib Ahmad Shah, Asif A. Tahir, Misbah Malik, Muhammad Ahmad Wattoo, Aziz ur Rehman
Summary: In this research, new hybrids of MOF-5 and GO were synthesized to remove the hazardous antibiotic moxifloxacin (MOX). The Ni/Mo.S-2/MOF-5/GO nanocomposite showed excellent photocatalytic activity and mechanical stability.
Article
Chemistry, Physical
Misbah Malik, Sobhy M. Ibrahim, Muhammad Altaf Nazir, Asif A. Tahir, Muhammad Khurram Tufail, Syed Shoaib Ahmad Shah, Aqsa Anum, Muhammad Ahmad Wattoo, Aziz Ur Rehman
Summary: Robust hybrid g-C3N4/ZnO-W/Co-x heterojunction composites were synthesized using simple and low-cost coprecipitation methods. Characterization techniques such as FTIR, XRD, FESEM, and EDX were used to investigate the fabricated catalyst. The as-synthesized g-C3N4/ZnO-W/Co-0.010 composite showed impressive photocatalytic performance, achieving 90% degradation of methylene blue (MB) under visible light within 90 minutes of irradiation. Furthermore, the synthesized composites exhibited good recyclability and mechanical stability over five cycles.
Article
Engineering, Environmental
Muhammad Aizaz Ud Din, Syed Shoaib Ahmad Shah, Muhammad Sufyan Javed, Manzar Sohail, Aziz ur Rehman, Muhammad Altaf Nazir, Mohammed A. Assiri, Tayyaba Najam, Nanpu Cheng
Summary: Single atom catalysts (SACs) have high catalytic performance and selectivity. MXenes, as a new 2D material with rich chelating sites, serve as ideal supports for SACs. This paper summarizes the structural characteristics and preparation strategies of MXene, and discusses its energy conversion applications.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Chemistry, Multidisciplinary
Syed Shoaib Ahmad Shah, Muhammad Altaf Nazir, Azhar Mahmood, Manzar Sohail, Aziz Ur Rehman, Muhammad Khurram Tufail, Tayyaba Najam, Muhammad Sufyan Javed, Sayed M. Eldin, Md Rezaur Rahman, Mohammed M. Rahman
Summary: This article summarizes the recent trends in developing 2D electrically conductive MOFs and their potential applications in various fields, providing future perspectives.
Article
Chemistry, Inorganic & Nuclear
Aqsa Anum, Sobhy M. Ibrahim, Asif A. Tahir, Muhammad Altaf Nazir, Misbah Malik, Syed Shoaib Ahmad Shah, Amber Ehsan, Muhammad Ahmad Wattoo, Aziz Ur Rehman
Summary: Nicotine, discharged into the environment due to its widespread use, has become a global issue. A magnetic sulfur doped metal-organic framework-235 has been synthesized and applied as a photocatalyst for the elimination of nicotine. The Ni-Mo.S2/MOF-235@g-C3N4 photocatalyst showed the highest activity, eliminating 98% of the sample.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Muhammad Bilal, Amna Altaf, Ehmen Bint-E-Khalid, Hafiza Komal Zafar, Nimrah Tahir, Ayman Nafady, Md A. Wahab, Syed Shoaib Ahmad Shah, Tayyaba Najam, Manzar Sohail
Summary: Developing an efficient and non-precious bifunctional catalyst for water splitting and organic effluent degradation is a challenging task. This study presents a highly efficient bifunctional nanocatalyst based on NiCo2O4, synthesized using a simple co-precipitation method. The optimized catalyst exhibited excellent catalytic activity for the electrochemical oxygen evolution reaction (OER) and simultaneous methylene blue (MB) dye degradation. The results suggest that this catalyst holds great promise for addressing the challenges of wastewater treatment and energy generation.
Article
Chemistry, Multidisciplinary
Muhammad Zeeshan Abid, Khezina Rafiq, Abdul Rauf, Syed Shoaib Ahmad Shah, Rongchao Jin, Ejaz Hussain
Summary: In this work, a Co/Na synergism in Co@Na-BiVO4 microstructures was found to enhance the photocatalytic performance of bismuth vanadate (BiVO4) catalysts. The Co@Na-BiVO4 photocatalysts exhibited higher activity than bare BiVO4, Co-BiVO4, or Na-BiVO4 due to the synergistic role of Co and Na contents, leading to improved charge separation and more efficient electron transportation to the active sites during the photoreaction.
NANOSCALE ADVANCES
(2023)
