Article
Chemistry, Multidisciplinary
Wenfang Miao, Feirong Huang, Xiaochen Shen, Shaopeng Li, Xingru Cao, Xuefeng Zhang, Jieyi Yu, Xinglong Dong
Summary: A stable atomically dispersed Fe-Nx-based catalyst with excellent ORR performance and a high half-wave potential was synthesized and the origin of its activity was revealed through density functional theory calculations.
MATERIALS CHEMISTRY FRONTIERS
(2022)
Article
Energy & Fuels
Lu Li, Mengyao Zhao, Bo Zhang, Guosheng Shao, Yige Zhao
Summary: In this study, nitrogen-doped porous carbon derived from Siraitia grosvenorii peel was successfully prepared using a one-pot method, achieving in-situ N doping and optimization of the pore structure. The nitrogen-doped carbon material exhibited excellent oxygen reduction reaction and oxygen evolution reaction performances due to its abundant active sites and mass transfer rates. This work provides feasible countermeasures for the preparation and regulation of biomass-derived carbon materials as dual-function electrocatalysts.
Article
Materials Science, Multidisciplinary
Lijuan Yang, Hui Ding, Guancheng Xu, Li Zhang, Bei Wei
Summary: Transition metal nitrogen-doped carbon catalysts have been explored as potential alternatives to Pt-based electrocatalysts for oxygen reduction reaction. This study successfully synthesized porous cobalt N-doped carbon materials with a core-shell nanostructure, which exhibited superior ORR performance compared to commercial Pt/C catalysts. By replacing 5% Zn with Co in the precursor, the Co-5-N-C-900 catalyst showed higher half-wave potential and diffusion-limited current density, as well as enhanced long-time stability.
MATERIALS RESEARCH BULLETIN
(2021)
Article
Chemistry, Physical
Yun Li, Xiangkun Zhang, Jingru Ren, Yongmin Huang
Summary: In this study, dopamine was used to inhibit the hydrolysis of ZIF-8 and Fe-0.1-NC NPs catalysts with excellent electrochemical performance were successfully synthesized. The catalysts showed satisfactory stability and methanol tolerance, which can be attributed to their hierarchical porous structure and the synergistic effect of active sites and nanoparticles.
CATALYSIS COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Yaxi Li, Yixian Liu, Xiang Liu, Yunliang Liu, Yuanyuan Cheng, Peng Zhang, Peiji Deng, Jiujun Deng, Zhenhui Kang, Haitao Li
Summary: In this study, iron-doped tin oxide (Fe-doped SnO2) was designed as a catalyst for nitrogen reduction. The Fe-doped SnO2 showed improved catalytic activity, NH3 yield, and Faradaic efficiency compared to pure SnO2. Density functional theory calculations revealed that the doped Fe atoms enhanced the catalytic performance by lowering the energy barrier of the rate-limiting step. The study also demonstrated the importance of electrons in the low-frequency region for determining the electron transfer ability of Fe-doped SnO2.
Article
Multidisciplinary Sciences
Da Chen, Zhaoming Xia, Zhixiong Guo, Wangyan Gou, Junlong Zhao, Xuemei Zhou, Xiaohe Tan, Wenbin Li, Shoujie Zhao, Zhimin Tian, Yongquan Qu
Summary: Inspired by natural metalloenzymes, a biomimetic strategy was developed to synthesize porous Fe-N-3 single atom nanozymes with high catalytic activity. The performance of the nanozymes surpassed that of other nanozymes due to the suppressed aggregation of atomically dispersed Fe, the optimized mesoporous structure through thermal removal of hemoglobin, and the unique electronic configuration of Fe-N-3.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Yu Liu, Yinghao Xu, He Wang, Jia Zhang, Haiyan Zhao, Li Chen, Ling Xu, Yan Xie, Jiahui Huang
Summary: The study synthesized dual-heteroatoms (N and S) co-doped electrocatalysts (FeNSC-850), showing efficient performance and high stability in the oxygen reduction reaction.
Article
Chemistry, Physical
Yu Zou, Lu Wen, Xiaoqiong Bian, Yongfan Zhang, Wei Lin, Shuping Huang, Kaining Ding
Summary: Based on density functional theory calculations, it was found that Mo atoms serve as the real active sites in the MoFeS4/GR catalyst, allowing for nitrogen fixation with good selectivity. Charge was identified as the main factor affecting the catalyst's nitrogen fixation activity. The role of Mo atoms is to provide electrons while Fe atoms transport electrons in the catalyst.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Guijun Li, Jingqi Sha, Lingtao Sun, Rong Jin, Tiantian Fu, Yang Xiang, Yibo Tang, Ying Lei, Yujun Si, Chaozhong Guo
Summary: In this study, a nitrogen-doped carbon-based catalyst (Fe-C-CG) for oxygen reduction reaction (ORR) was synthesized by pyrolyzing a precursor from coffee grounds, iron chloride, and commercial carbon black in an ammonia atmosphere. The Fe-C-CG showed high ORR activity and exhibited excellent performance when applied in a Zn-air battery.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Shuxian Di, Chen Guo, Yajie Dai, Fanghui Wang, Zhiqian Wang, Hong Zhu
Summary: A strategy for preparing nitrogen-doped porous carbon (NPC-Co) using a dual-template method is reported. PtCo metal nanoparticles (NPs) were added to develop a catalyst (PtCo/NPC-Co) with high catalytic performance for the oxygen reduction reaction (ORR). Polydopamine was selected as the carbon and nitrogen source because it can complex metals, encapsulate templates, and reduce metals. By using ZnO and Co NPs as a double template, a carrier (NPC-Co) with a high mesoporous ratio and high N content was obtained. The interaction effect between NPC-Co and PtCo NPs enhanced the overall electrocatalytic performance of PtCo/NPC-Co, which exhibited excellent catalytic performance and durability for oxygen reduction.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Applied
Jihai Duan, Dezan Shao, Weiwen Wang, Delu Zhang, Chaojie Li
Summary: The study developed a highly efficient and cost-effective non-precious metal electrocatalyst, MoP@PPC octahedron, synthesized through a metal-organic framework-assisted strategy. The catalyst showed good performance and high ammonia yield rate in nitrogen reduction reaction, attributed to the synergistic effects of P-dopant, porous carbon, and stable MoP nanoparticle.
MICROPOROUS AND MESOPOROUS MATERIALS
(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
Chemistry, Multidisciplinary
Yi Chen, Shengnan Xie, Linke Li, Jinchen Fan, Qiaoxia Li, Yulin Min, Qunjie Xu
Summary: In this study, iron-based catalysts co-doped with nitrogen and biomass-derived phosphorus (N, P-Fe/C) were synthesized using a pyrolysis strategy, showing remarkable oxygen reduction reaction (ORR) performance due to the distinct hierarchical pore structure, nitrogen and phosphorus co-doping effect on the carbon matrix, and the combined effect of FeNx active sites. The N, P-Fe/C catalysts have the potential to be a promising substitute for platinum-based catalysts.
JOURNAL OF NANOPARTICLE RESEARCH
(2021)
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
Chemistry, Physical
Sijun Yang, Jie Yu, Chengli Yao, Shikuo Li, Anjian Xie
Summary: In this study, hierarchical porous carbon materials with different proportions of Fe and Zn were prepared using polystyrene nanospheres as templates. The resulting 5Fe95Zn-HPC showed excellent oxygen reduction reaction performance comparable to commercial Pt/C catalyst and higher stability and methanol resistance in alkaline and acidic solutions.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
