Article
Chemistry, Physical
Dan Wang, Hao Xu, Peixia Yang, Xiangyu Lu, Jingyuan Ma, Ruopeng Li, Lihui Xiao, Jinqiu Zhang, Maozhong An
Summary: A facile one-step impregnation-pyrolysis route is developed to synthesize highly active dual-metal sites embedded in hierarchical N-doped carbon, which can synergistically enhance the ORR activity and achieve excellent performance in zinc-air batteries.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Chemistry, Physical
Yuting He, Xiaoxuan Yang, Yunsong Li, Liting Liu, Shengwu Guo, Chengyong Shu, Feng Liu, Yongning Liu, Qiang Tan, Gang Wu
Summary: This study presents atomically dispersed Fe-Co dual metal sites derived from Fe and Co codoped zeolitic imidazolate frameworks, showing excellent bifunctional catalytic activity for ORR and OER in alkaline media. The FeCo-NC catalyst exhibits outstanding stability and is integrated into an air electrode for fabricating rechargeable and flexible Zn-air batteries, achieving a high power density and long-cycle stability. This work offers a method to design and synthesize atomically dispersed multi-metal site catalysts for advanced electrocatalysis.
Article
Engineering, Environmental
Ren Xu, Xingkun Wang, Mingzi Sun, Canhui Zhang, Cheng Li, Zhengwen Cao, Meng Gu, Bolong Huang, Minghua Huang
Summary: This research successfully integrates atomic Fe-N4 sites and Fe nanoclusters to construct efficient and cost-effective catalysts for neutral oxygen reduction reaction (ORR). Experimental results have demonstrated the excellent half-wave potential and cycling stability of the catalyst in neutral solution, while theoretical calculations reveal the synergistic effect between atomic Fe-N4 sites and Fe nanoclusters.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Vishal Jose, Huimin Hu, Eldho Edison, William Manalastas, Hao Ren, Pinit Kidkhunthod, Sivaramapanicker Sreejith, Anjali Jayakumar, Jean Marie Vianney Nsanzimana, Madhavi Srinivasan, Jinho Choi, Jong-Min Lee
Summary: This study presents a facile method for preparing bimetallic Fe and Co sites entrapped in nitrogen-doped hollow carbon nanospheres (Fe,Co-SA/CS), demonstrating promising activity for both oxygen reduction reaction (ORR) and oxygen evolution reaction (OER).
Article
Nanoscience & Nanotechnology
Xiaoqiong Hao, Xiaowei An, Amar M. Patil, Peifen Wang, Xuli Ma, Xiao Du, Xiaogang Hao, Abuliti Abudula, Guoqing Guan
Summary: This study successfully prepared N-doped graphitized carbon with high N-doping content and ultrahigh specific surface area using low-cost wood biomass, demonstrating excellent CO2 reduction reaction activity and long-term stability. The carbon material also showed promising performance as a cathode material in Zn-CO2 batteries. By converting waste biomass into valuable electrocatalysts, this work provides a new strategy for solving carbon-related issues.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Yuepeng Liu, Zhongfang Li, Likai Wang, Lei Zhang, Xueliang Niu
Summary: In this study, Fe/N co-doped three-dimensional porous graphene was successfully prepared via a template method and showed promising potential as bifunctional electrocatalysts for oxygen reduction reaction and oxygen evolution reaction. The catalyst exhibited pH-independent ORR activity and low OER overpotential in alkaline electrolyte, leading to excellent performance in Zn-air batteries.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Multidisciplinary
Qiufang Gong, Yajie Wang, Xiangzhong Ren, Chuanxin He, Jianhong Liu, Qianling Zhang
Summary: Single-atom catalysts show excellent activity and selectivity due to their atomic dispersion, but are not suitable for complex reactions like CO2RR. However, diatomic-site catalysts can provide synergistic effects to break the intrinsic activity limit and exhibit outstanding performance in CO2RR. This is attributed to the adjusted local environment and electron structure of the active center, leading to reduced reaction barrier for *COOH formation.
Article
Chemistry, Multidisciplinary
Youzhi Li, Bo Wei, Minghui Zhu, Jiacheng Chen, Qike Jiang, Bin Yang, Yang Hou, Lecheng Lei, Zhongjian Li, Ruifeng Zhang, Yingying Lu
Summary: Dual-atom catalysts have shown potential to outperform single-atom catalysts in the electrochemical conversion of CO2 due to a synergistic effect observed in atomically dispersed Ni-Zn bimetal sites. The heteronuclear coordination modifies the d-states of the metal atom, narrowing the gap between εd and EF to strengthen electronic interaction at the reaction interface, leading to improved catalytic efficiency.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Xiaofei Gong, Jianbing Zhu, Jiazhan Li, Rui Gao, Qingyan Zhou, Zhen Zhang, Haozhen Dou, Lei Zhao, Xulei Sui, Jiajun Cai, Yunlong Zhang, Bing Liu, Yongfeng Hu, Aiping Yu, Shu-hui Sun, Zhenbo Wang, Zhongwei Chen
Summary: Iron-nitrogen-carbon materials are being studied as promising substitutes for Pt-based electrocatalysts for the oxygen reduction reaction. The 1D porous iron/nitrogen-doped carbon nanorods show exceptional ORR activities and demonstrate outstanding performance in Zn-air batteries.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Physical
Jie Xu, Shuhua Lai, Defeng Qi, Min Hu, Xianyun Peng, Yifan Liu, Wei Liu, Guangzhi Hu, Heng Xu, Fan Li, Chao Li, Jia He, Longchao Zhuo, Jiaqiang Sun, Yuan Qiu, Shusheng Zhang, Jun Luo, Xijun Liu
Summary: The study demonstrated the preparation of Fe-Zn-SA/NC catalyst for efficient ORR reaction in all pH range, showing high half-wave potentials and stability, comparable to Pt/C. The Fe-Zn-SA/NC catalyst also exhibited high power density and durability when assembled into a Zn-air battery, indicating its potential for real energy-related devices. The theoretical calculations attribute the superior catalytic activity of Fe-Zn-SA/NC to the lower energy barriers of ORR at the Fe-Zn-N-6 centers, offering new insights for dual-atom catalysts in energy conversion related catalytic reactions.
Article
Chemistry, Multidisciplinary
H. L. Zhao, S. Wu, C. Y. Liu, X. T. Yan, X. Xu, S. S. Fu, Y. B. Wang, Q. Su, X. Wang, Q. L. Yang
Summary: A highly active non-precious oxygen reduction catalyst was developed by doping different metals and forming bimetallic active sites. The catalyst showed excellent ORR catalytic activity and stability.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Kuixing Ding, Jiugang Hu, Jia Luo, Liming Zhao, Wei Jin, Yunpeng Liu, Zhonghua Wu, Guoqiang Zou, Hongshuai Hou, Xiaobo Ji
Summary: In this study, bifunctional Co-CoN4 hybrid active sites embedded in porous N-rich carbon nanolamellas were successfully constructed through a facile coordination bridging strategy. The designed catalyst exhibited excellent activity and stability for both the ORR and OER, making it a promising candidate for rechargeable Zn-air batteries.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Jiajing Pei, Li Yang, Jie Lin, Zedong Zhang, Zhiyi Sun, Dingsheng Wang, Wenxing Chen
Summary: In this study, a yolk-shell carbon framework composed of Zn-Mn dual atomic clusters was synthesized, which exhibited excellent electrocatalytic performance for CO2RR. The unique structure-property correlation observed in this catalyst offers new insights for the development of highly accessible atomic catalysts.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Nanoscience & Nanotechnology
Yan-Ni Li, Zhuang Sun, Tao Zhang
Summary: In this study, a solid-soluble synergistic catalysis approach was proposed to enhance the ORR/OER performances of lithium-oxygen batteries. By using a single-atomic catalyst and a soluble catalyst, the growth pathway of Li2O2 can be regulated and the kinetics of oxygen reduction and evolution reactions can be accelerated, leading to improved battery performance.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Lingxiao Wang, Xiaoping Gao, Sicong Wang, Cai Chen, Jia Song, Xianhui Ma, Tao Yao, Huang Zhou, Yuen Wu
Summary: Arranging atoms in an orderly manner at the atomic scale to create stable polyatomic structures is a very challenging task. In this study, we have successfully developed three-dimensional confinement areas on the two-dimensional surface by creating regional defects. These areas are composed of vertically stacked graphene layers, where Ni and Fe atoms are anchored concentrically to form axial dual atomic sites. This novel approach allows for concentrated creation of dual atomic sites by building a confinement-selective surface.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Nanoscience & Nanotechnology
Wu Zhu, Ping Wei, Jianqiang Zhang, Longzhou Li, Wanting Zhu, Xiaolei Nie, Xiahan Sang, Qingjie Zhang, Wenyu Zhao
Summary: In this study, a high-quality Ni-based alloy barrier layer was successfully fabricated, which can improve the performance stability and electrothermal conversion efficiency in Bi2Te3-based TE devices.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Yan Li, Yaxin Ji, Yingjie Zhao, Junxiang Chen, Sixing Zheng, Xiahan Sang, Bin Yang, Zhongjian Li, Lecheng Lei, Zhenhai Wen, Xinliang Feng, Yang Hou
Summary: In this study, a viable strategy to manipulate the local spin state of isolated iron sites through S-coordinated doping was reported. The results showed that the formation of a medium-spin-state of Fe induced by S coordination is beneficial for facilitating the e(g) electrons to penetrate the antibonding pi-orbital of nitrogen, leading to a record-high current density and high NH3 selectivity.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Physical
Xianke Wu, Ziyu Wang, Yong Liu, Xiaolong Sun, Yufeng Xu, Yuan Tian, Bo Wang, Xiahan Sang, Jing Shi, Rui Xiong
Summary: This study demonstrates that the thermoelectric performance of p-type Bi2Te3-based materials can be improved by incorporating Bi2Fe4O9 magnetic nanoparticles. These nanoparticles effectively scatter low-energy carriers and improve carrier quality. The synergistic effect of boundary scattering and magnetic particle scattering leads to an increase in Seebeck coefficient and a decrease in thermal conductivity. The maximum ZT value obtained is 1.1 at 393 K, which is 13% higher than the pure sample. The average ZT value of the nanocomposite consisting of Bi2Fe4O9 magnetic nanoparticles is 0.98 in the temperature range of 303-483 K, exhibiting an increase of 11%. Overall, the results indicate that magnetic nanoparticles with low saturation magnetic moment have a positive effect on the performance of thermoelectric materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Wanzhen Zheng, Dashuai Wang, Wenjun Cui, Xiahan Sang, Xuetao Qin, Zilin Zhao, Zhongjian Li, Bin Yang, Miao Zhong, Lecheng Lei, Qiang Zheng, Siyu Yao, Gang Wu, Yang Hou
Summary: Improving the proton transfer rate is crucial for accelerating the reaction kinetics of CO2 electroreduction (CO2ER). A zinc-nitrogen-sulfur co-doped carbon catalyst with isolated zinc and adjacent sulfur dopants was developed for CO2ER. The sulfur sites enhance bicarbonate dissociation for proton feeding, while the zinc-nitrogen sites serve as active centers for CO2ER. The synergistic effects of sulfur and zinc-nitrogen sites improve the proton transfer rate and boost the reaction kinetics. This catalyst exhibits excellent CO2ER performance with high CO selectivity and turnover frequency.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Yue Sun, Wenjun Lv, Yu Liang, Yuan Gao, Wenjun Cui, Yujie Yan, Wenyu Zhao, Qingjie Zhang, Xiahan Sang
Summary: By doping transition metal elements into La(Fe, Si)13 materials, the thermal stability and working temperature range of magnetocaloric materials can be improved. This study provides a new method for designing novel magnetocaloric materials.
SCRIPTA MATERIALIA
(2023)
Article
Chemistry, Physical
Zhongyuan Guo, Chuangwei Liu, Chenghua Sun, Jiang Xu, Hao Li, Tianyi Wang
Summary: Single-atom catalysts have the potential for high activity and selectivity in electrocatalytic nitrogen reduction reaction (eNRR). In this study, we found that the coordination environment of single-atom Fe plays a crucial role in determining the N-2 adsorption and activation. The concept catalysts, FeCN2 and FeCN3, showed the highest eNRR activities with suppressed side reactions. Furthermore, the Bader charge of single-atom Fe and *NH adsorption energy can serve as good descriptors for the design of eNRR catalysts. This study unravels the key role of coordination environment in tuning the reactivity of single-atom Fe-N-x-C materials in eNRR.
Article
Chemistry, Physical
Jinchang Sun, Chenghao Xie, Wenjun Cui, Fan Yan, Jun Li, Jiaxu Zhang, Xiahan Sang, Xinfeng Tang, Gangjian Tan
Summary: In this study, the solubility limit of Cu-Pb in PbSe was found to be extended to at least 1.5 atom % by pairing with an identical amount of Cu interstitials (Cu-i). The enhanced solubility of Cu-Pb resulted in a significant enhancement of the Seebeck coefficient in hole-doped PbSe. Cu(2)Se precipitates and various point defects and line defects in the material also hindered the phonon propagation and reduced the lattice thermal conductivity. Furthermore, a migration of Cu atoms from Cu(2)Se precipitates to the tetrahedral interstices of the PbSe matrix was observed at elevated temperatures, leading to further reduction in lattice thermal conductivity and achieving a peak ZT value of around 1.8 at 873 K.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Physical
Jinchang Sun, Wenjun Cui, Chenghao Xie, Tian Yu, Fan Yan, Zhiquan Chen, Xiahan Sang, Xinfeng Tang, Gangjian Tan
Summary: In this study, the presence of Pb vacancies in Sn-substituted Pb0.98Na0.02Se was effectively inhibited by doping a dilute amount of Te, leading to a remarkable recovery of carrier mobility. Moreover, Te doping resulted in a significant reduction in lattice thermal conductivity by reinforcing phonon scattering. As a result, the average ZT value of Pb0.97Sn0.01Na0.02Se was doubled upon 6 mol % Te doping between 300 and 773 K.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Zhenjie Li, Zhongyuan Guo, Xinyue Wu, Xunheng Jiang, Hao Li, Jiang Xu, Kun Yang, Daohui Lin
Summary: This study finds that supported palladium ensembles consisting of a few zero-valent Pd atoms exhibit exceptional reactivity in formic acid dehydrogenation and 4-chlorophenol dechlorination reactions. The reactivity is significantly higher than that of supported Pd single-atom catalysts. The findings highlight the important role of the structure and valence state of Pd ensembles in catalytic reductive reactions.
Article
Engineering, Environmental
Yi Liu, Wenhua Dong, Xunheng Jiang, Jiang Xu, Kun Yang, Lizhong Zhu, Daohui Lin
Summary: In this study, it was found that erythrosine (ERY), an edible dye, can efficiently degrade intracellular antibiotic resistance genes (iARGs) by generating abundant O-1(2) under visible light. The degradation of 6 log iARGs was achieved within 40 minutes. The unique indirect oxidation of iARGs induced by O-1(2) resulted in a 3.2-fold faster degradation of intracellular ARGs compared to extracellular ARGs. Additionally, other photosensitizers with high O-1(2) yields, such as Rose Bengal and Phloxine B, also demonstrated efficient iARG degradation.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Du Chen, Xiaohong Hu, Chaohuang Chen, Daohui Lin, Jiang Xu
Summary: This article presents the design principles and characterization techniques of lattice-doped nFe(0) from the perspective of microenvironment chemistry. The effects of doping elements on the local coordination environment of nFe(0) crystals are discussed, which determine their structure-property-activity relationships. The trade-off between reactivity and selectivity can be altered by controlling the amounts, types, and speciation of doping elements. The challenges and future outlook of using lattice-doped nFe(0) materials in real applications are also discussed.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Wenhua Dong, Yi Liu, Jie Hou, Jianying Zhang, Jiang Xu, Kun Yang, Lizhong Zhu, Daohui Lin
Summary: This study investigated the degradation performance and mechanism of eARGs by nematodes, focusing on the NUC-1 protein. The results showed that Caenorhabditis elegans effectively degraded and deactivated eARGs, with DNase II being the primary mechanism. Homologs of NUC-1 were found in other nematodes, and their abilities to degrade eARGs were confirmed. The study also demonstrated that nematodes can degrade eARGs under different conditions and in various samples. These findings highlight the important role of nematodes in the natural decay of eARGs and provide potential solutions for antimicrobial resistance mitigation.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Ying Hu, Wenjun Cui, Weichao Lu, Wanting Zhu, Xiaolei Nie, Xiahan Sang
Summary: Thermoelectric properties of nanocomposites are improved by incorporating multiferroic BiFeO3 nanoparticles with spontaneous electrical and magnetic polarization into p-type Bi0.5Sb1.5Te3. The atomic-resolution interfacial structure of BiFeO3/ Bi0.5Sb1.5Te3 is revealed using aberration-corrected scanning transmission electron microscopy. The enhancement of thermoelectric properties is attributed to the reduced carrier concentration, increased Seebeck coefficient, and boosted phonon scattering caused by the local electrical and magnetic fields and nanostructures.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Zishen Lin, Jiang Xu, Aibin Zhu, Chi He, Changzhao Wang, Chunli Zheng
Summary: This study synthesizes sulfidated amorphous zerovalent iron (SAZVI) with an amorphous structure using various sulfur precursors, resulting in increased specific surface area and hydrophobicity. The removal efficiency of SAZVI-Na2S for Cr(VI) is 8.5 times higher than that of amorphous zerovalent iron (AZVI). The water contact angle, free corrosion potential, and surface Fe(II) proportion play crucial roles in Cr(VI) removal. The enhanced elimination ability of SAZVI-Na2S is attributed to the adsorption of Cr(VI) by the FeS x shell, followed by the rapid release of internal electrons to reduce Cr(VI) to Cr(III), resulting in the precipitation of FeCr2O4 and Cr2S3 on the surface of SAZVI-Na2S.
Letter
Engineering, Multidisciplinary
Yanlong Wang, Shuting Xiao, Jiang Xu, Daohui Lin
JOURNAL OF ZHEJIANG UNIVERSITY-SCIENCE A
(2023)
