Article
Engineering, Environmental
Wei Liu, Shao-Qing Li, Wei-Xing Liu, Qiang Zhang, Jia Shao, Jin-Lei Tian
Summary: A convenient and rational route was designed to synthesize B, N co-doped porous carbon materials (BNPCs) through a two-step calcination method derived from adenine-based bio-MOF-1. The co-doped catalysts show superior catalytic efficiency and high catalytic cycling stability for the reduction of 4-NP.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Physical
Jin Lin, Yuhong Du, Guangping Wu, Chao Wang, Li Guo, Yanzhong Wang
Summary: In this study, hierarchically porous Fe/N co-doped porous carbon on N-doped carbon nanotubes (Fe/N-C@NCNTs) were prepared by the pyrolysis of Fe-doped ZIF-8 embedded on polypyrrole nanotubes (PNTs). The Fe/N-C@NCNTs electrocatalyst exhibited excellent oxygen reduction performance with a limit current density of 5.7 mA cm-2 and a half-wave potential of 0.84 V (vs. RHE). The electrocatalytic activity was only reduced by 7% after a stability test of 650 minutes. This outstanding performance was attributed to the synergistic effects of abundant Fe-Nx-C active sites, high graphitization degree, and hierarchically porous structure.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Energy & Fuels
Kuo-Yung Hung, Soraya Hosseini, Ta-En Ko, Chen-Ming Tseng, Yuan-Yao Li
Summary: Catalysts with embedded and functionalized elements play a crucial role in controlling oxygen-reduction and oxygen-evolution reactions for the development of high-performance ZABs. In this study, carbon nanotube-grafted, Co-Fe embedded, nitrogen-doped porous carbon nano-frameworks were synthesized and exhibited superior OER and ORR performance. A ZAB with a hybrid catalyst of these nano-frameworks achieved excellent discharge capacity, power density, and cycle stability compared to a ZAB with traditional Pt/C + RuO2 catalyst.
Article
Nanoscience & Nanotechnology
Jiawei Shi, Songlei Lv, Li Zhang, Jing Li, Shunfa Zhou, Konggang Qu, Weiwei Cai
Summary: This study successfully developed a porogen-in-resin strategy to prepare ip-FeNCS catalyst with a 3D interconnected porous structure and 2D nanosheet morphology, demonstrating excellent ORR activity under both alkaline and acid conditions in practical PEM fuel cells.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Environmental
Jingren Yang, Deqian Zeng, Jun Li, Lingqian Dong, Wee-Jun Ong, Yiliang He
Summary: A highly efficient Fenton-like catalyst based on isolated diatomic Fe-Co anchored on N-doped porous carbon was reported, showing outstanding catalytic activity for BPA degradation. The unique FeCoN6 configuration and pyrrolic N adsorption site contribute to the ultra-high catalytic performance of the diatomic Fe-Co catalyst in the heterogeneous activation of peroxymonosulfate.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Energy & Fuels
Yu Lei, Guang Li, Juan Yang, Feng Zhang, Yongqiang Shen, Xiaoyan Zhang, Xianyou Wang
Summary: As a promising alternative to lithium-ion batteries, zinc-air batteries are recognized as a novel type of clean and environmentally friendlyenergy storage and conversion technology. In this study, a high-efficiency and cheap ORR catalyst, Fe3O4/Fe-N (x) dual catalytic active center (Fe-N-CS), was designed and prepared to overcome the limitation of low current density and large electrode polarization in the air cathode. The Fe-N-CS exhibited excellent ORR performance, surpassing Pt/C catalysts in terms of half-wave potential, onset potential, and stability.
Article
Engineering, Environmental
Minghong Huang, Shenghua Zhou, Dong-Dong Ma, Wenbo Wei, Qi-Long Zhu, Zhenguo Huang
Summary: In this study, we report excellent bifunctional catalysts for the hydrogen and oxygen evolution reactions (HER and OER) by entrapping heterojunctions between carbide and transition metal nanoparticles (NPs) in porous nitrogen-doped carbon nanotubes (NCNTs). The dual-phase MoC and Fe NPs in NCNTs exhibited commendable bifunctional activities with small overpotentials for the HER and OER. The combination of Fe NPs generated synergistic heterointerfaces and improved the OER activity of MoC.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Sitian Guo, Jue Hu, Shanxiong Luo, Yantong Zhang, Zihan Zhang, Peng Dong, Xiaoyuan Zeng, Mingli Xu, Lina Han, Jianliang Yuan, Chengxu Zhang, Yingjie Zhang
Summary: Fe-Nx catalysts have gained widespread attention for their excellent catalytic performance and the incorporation of two or more metals can significantly enhance catalytic activity. The synthesized Fe and Zr bimetal-doped carbon-based catalyst shows superior ORR electrocatalytic performance, providing a new idea for the preparation of high-performance bimetallic-doped carbon-based electrocatalysts.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Engineering, Environmental
Krzysztof Kusmierek, Wojciech Kicinski, Malgorzata Norek, Marek Polanski, Boguslaw Budner
Summary: Heteroatom-doped carbon gels were studied for their efficiency in oxidative and adsorptive degradation/removal of phenolic compounds. It was found that the co-doping of iron and nitrogen in carbon materials enhances catalytic properties and adsorption capacity, leading to more efficient degradation of organic pollutants.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Environmental Sciences
Chao Geng, Ruikang Lin, Peilin Yang, Pengfei Liu, Li Guo, Bo Cui, Yishan Fang
Summary: N-doped carbon materials with 3D porous-layered structure were synthesized for the first time through a one-step co-pyrolysis method using corn starch, melamine, and metal catalysts (Ni (II) and Mn (II)). The resulting 3D-NC exhibited a heterogeneously meso-macroporous surface and a hierarchically connected sheet structure. Adsorption experiments showed that the 3D-NC had a high selectivity for Hg (II) and could adsorb it within 90 minutes with a maximum capacity of 403.24 mg/g at 293 K, pH = 5. The adsorption mechanism involved physical adsorption, electrostatic attraction, chelation, and ion exchange. Thermodynamic study indicated that the adsorption process was spontaneous, endothermic, and random. Furthermore, the 3D-NC demonstrated excellent regeneration and recovery after adsorption-desorption cycles, making it a promising material for Hg (II) remediation in contaminated wastewater.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Electrochemistry
Hui-Juan Zhang, Ye He, Bo Chen, Wenqing Zhao, Wenli Yao, Yuhua Xue
Summary: In this study, a non-precious metal ORR catalyst, Fe&Fe2O3 dual-decorated on N-doped porous carbon (Fe&Fe2O3/NC), was successfully prepared and exhibited excellent catalytic activity and stability.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Engineering, Environmental
Youlin Liu, Zhaoqiang Li, Yuesong Shen, Dongyan Li, Zhongwei Chen
Summary: A novel synthesis strategy is developed using basic zinc carbonate nanosheets as a self-template to construct Fe-Nx active sites in porous carbon nanosheets, which exhibit excellent electrocatalytic performance for oxygen reduction reaction. This self-templated strategy provides a new way for the fabrication of unique 2D carbon-based electrocatalysts with superior performance in primary Zn-air batteries.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Haiying Du, Jie Jiang, Lianggui Ren, Qinchuan He, Yiqun Wang
Summary: In this research, Fe3C/Fe@N-doped biomass-derived porous carbon composites (Fe3C/Fe@NBPC) were successfully prepared by swelling-freeze-drying and carbonizing. The impedance matching performance of Fe3C/Fe@NBPC was effectively improved by adjusting the aperture and doping magnetic particles, leading to superior electromagnetic wave (EMW) absorption performance.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Nanoscience & Nanotechnology
Zheng Liu, Yanfei Zhu, Kuikui Xiao, Yali Xu, Yufan Peng, Jilei Liu, Xiaohua Chen
Summary: Designing low-cost, high-activity electrocatalysts with excellent stability is crucial for large-scale implementation of zinc-air batteries. The reported method for constructing nitrogen-doped carbon with carbon nanotubes and embedded Fe/Fe3C nanoparticles shows promising potential in the field of non-precious metal oxygen electrocatalysis. The catalyst materials achieved an energy density of 719.1 Wh kg(-1) and peak power density of 101.3 mW cm(-2) at a 50 mA cm(-2) discharge current density, with stable charge/discharge voltage gap over 200 cycles at a current density of 20 mA cm(-2).
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Environmental
Changpei Ouyang, Kajia Wei, Xia Huang, Mohamed Gamal El-Din, Xiaoyuan Zhang
Summary: Heterogeneous catalytic ozonation is considered a viable technology for advanced wastewater treatment, and Fe/N-doped CAF showed promising results in treating secondary effluent. Theoretical calculations guided catalyst optimization and provided a new direction for designing ozonation catalysts. Fe/N-doped CAF demonstrated great potential for practical applications.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Physical
Ruirui Yun, Zi-Wei Ma, Yang Hu, Feiyang Zhan, Chuang Qiu, Baishu Zheng, Tian Sheng
Summary: The reduction of nitrogen-containing heterocyclic compounds under mild conditions in aqueous medium is challenging, but Three Nano-Ni-MOFs, including Ni-NH2, have shown outstanding hydrogenation activity due to their modified -NH2 function group which anchors the substrate and facilitates the catalysis process. Theoretical calculations indicate that the -NH2 group on the catalyst aids in H-2 heterolytic dissociation for hydrogenation reactions.
Article
Chemistry, Inorganic & Nuclear
Fagong Xu, Feiyang Zhan, Beibei Zhang, Tuanhui Li, Lei He, Liting Du, Shizhou Luo, Baishu Zheng, Ruirui Yun
Summary: In this study, a tubular structure was designed to reveal the formation process of tubular carbon from the polyhedron. A pod-like core-shell catalyst with high activity for the reduction of nitro groups was successfully obtained.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Ruirui Yun, Beibei Zhang, Feiyang Zhan, Zhifeng Xin, Tian Sheng, Zhisheng Shi
Summary: This study presents a catalyst Fe@NBCT that shows high performance in electrocatalytic CO2 conversion to syngas with tunable H2/CO ratio. In situ synchrotron radiation Fourier transform infrared spectra (SR-FTIR) and density functional theory (DFT) calculations reveal the important roles of differing N-doping carbon matrix and Fe nanoclusters (NCs) in tuning the syngas ratio during the reaction.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Ruirui Yun, Tuanhui Li, Lei He, Changsong Shi, Ruiming Xu
Summary: This study successfully fabricated a novel catalyst composed of a hollow nitrogen-doped carbon framework and high-loading atomically dispersed iron sites for the cycloaddition reactions of CO2 with epoxides. The catalyst exhibited excellent performance due to its ultrahigh loading of atomically dispersed iron sites. This research not only provides an advanced catalyst for CO2 cycloaddition, but also offers a new perspective on the rational design of catalysts with high-loading active sites for various heterogeneous catalytic reactions.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Ruirui Yun, Beibei Zhang, Changsong Shi, Ruiming Xu, Junjie Mao, Zhaoxu Wang
Summary: In this study, atomically dispersed CuN3 catalysts supported by two different types of zirconia were fabricated to investigate the influence of the support on the electrocatalytic CO2 reduction towards CO. The CuN3/NC/T-ZrO2 catalyst exhibited excellent performance at a wide range of potentials, attributed to the acidic uncoordinated Zr4+ sites of T-ZrO2 and the conductivity enhancement of N-doped carbon (NC). Density functional theory calculations confirmed the effective decrease of Gibbs free energy for CO2 to CO conversion by T-ZrO2. Additionally, this study provided a promising strategy for tuning catalytic activity and selectivity by controlling the phase of the support, offering insights into the electrocatalytic CO2RR process.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Multidisciplinary
Lei He, Tuanhui Li, Xiaoxuan Zhang, Shizhong Luo, Zhisheng Shi, Ruirui Yun
Summary: In this study, nickel particles embedded in porous carbon were synthesized using a bio-template strategy. The Ni@PC-900 catalyst exhibited higher activity and selectivity in the hydrogenation reaction compared to other catalysts, with a conversion rate of over 99% within 30 minutes at room temperature. The high catalytic activity was found to be positively correlated with the particle size and distribution, and the well core-shell structure of Ni@PC-900 provided excellent durability by protecting the active site from leaching during the catalytic process.
Article
Nanoscience & Nanotechnology
Meng Meng, Lei He, Changsong Shi, Ruinring Xu, Shizhong Luo, Ruirui Yun
Summary: In the field of heterogeneous catalysis, the design and fabrication of non-noble metal-based catalysts with high activity and selectivity has gained increasing attention. In this study, a variety of Co-based catalysts dispersed on a hollow nanosphere were successfully designed and fabricated. The experimental results revealed that the hollow structure facilitated substrate enrichment and easy accessibility, resulting in remarkable catalytic performance for the hydrogenation of nitro-compounds under mild conditions.
ACS APPLIED NANO MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Yisen Jiang, Zan Zhang, Weiliang Cao, Baishu Zheng, Zhaoxu Wang, Ruirui Yun
Summary: Selective and efficient catalytic hydrogenation of aromatic nitro compounds with multiple groups into target amines under mild conditions is highly desirable yet fairly challenging. Herein, we report a novel iron-based catalyst, which has metal nanoparticles (NPs) encapsulated in porous N-doped carbon nanotubes (NCT). The Fe/Fe5C2@NCT-800 catalyst shows extremely high activity, chemoselectivity, and stability toward the hydrogenation of nitro compounds, affording full conversion within 0.2-0.3 h under room temperature.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Inorganic & Nuclear
Changsong Shi, Ruiming Xu, Lei He, Tuanhui Li, Shoujie Liu, Ruirui Yun
Summary: In the field of heterogeneous industrial catalysis process, the encapsulated structure is crucial in preventing active sites from leaching during the reaction. However, there are few studies on controlled fabrication of encapsulated catalysts. In this work, an amino-assisted strategy was developed to construct a highly stable catalyst with core-shell copper nanoparticles (Cu@NC), which exhibited excellent activity and durability in quinoline hydrogenation, even in large-scale tests. This offers a promising method to enhance durability in heterogeneous catalysis by fabricating a stable catalyst.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Ruirui Yun, Beibei Zhang, Changsong Shi, Ruiming Xu, Ting Suo
Summary: In this work, a CuNi intermetallic particle was fabricated by sacrificing a bimetal-doped metal-organic framework and decorating it onto an N-doped carbon substrate. The CuNi/NC catalyst exhibited excellent electroreduction of CO2 and high selectivity towards CO.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Changsong Shi, Ruiming Xu, Ting Suo, Ruirui Yun
Summary: An efficient Pd/NHS catalyst with remarkable CO2 fixation performance has been successfully designed and synthesized, outperforming Pd/NS catalysts due to the presence of hollow structures enabling efficient mass transfer and product release.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Ruirui Yun, Wei Zhang, Zan Zhang, Xiaoxuan Zhang, Zhaoxu Wang, Shizhong Luo
Summary: In this study, a series of core-shell catalysts Cu@NC/PC were designed and synthesized for the first time using a functional polymer assistant strategy. Cu@NC/PC-900-2 exhibited excellent catalytic performance in the hydrogenation of nitroarenes, attributed to its large BET surface area and uniformly dispersed metal sites. The honeycomb-like structure facilitated mass transfer and active site exposure. Both experimental and theoretical results indicated that the N-doping sites promoted the adsorption of nitro groups, resulting in high activity and selectivity under low H-2 pressure and temperature. Importantly, the catalyst also achieved high conversion in gram-scale catalytic processes, highlighting its practical application potential.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Multidisciplinary
Hui Hu, Nan Yang, Jiahui Sun, Fu Zhou, Rui Gu, Yuan Liu, Li Wang, Xuejiao Song, Ruirui Yun, Xiaochen Dong, Guangfeng Wang
Summary: A multifunctional metal-organic framework (MOF) based photothermal therapy with gene therapy platform has been developed, allowing for photothermal/photoacoustic/fluorescence multimodal imaging and specific release of therapeutic cargos as needed, providing an efficient and safe strategy for cancer theranostics.
Article
Chemistry, Multidisciplinary
Ruirui Yun, Tuanhui Li, Beibei Zhang, Lei He, Shoujie Liu, Can Yu, Zheng Chen, Shizhong Luo
Summary: A novel strategy of designing a hollow structure via post-modified N sites coordinating to metal species has been proposed. This approach has successfully achieved a high loading atomically dispersed Co site catalyst, which exhibits superb performance in CO2 cycloaddition to ethylene carbonate. This novel avenue can be extended to other atomically dispersed metal catalysts with high loading.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
Ruirui Yun, Tuanhui Li, Lei He, Changsong Shi, Ruiming Xu
Summary: A novel catalyst with high-loading atomically dispersed iron sites has been fabricated by a polymer-assisted strategy, showing excellent performance in cycloaddition reactions of CO2 with epoxides under milder conditions. This study not only advances CO2 cycloaddition catalysis but also provides a new perspective on the rational design of catalysts with high-loading active sites.
INORGANIC CHEMISTRY
(2022)
