Article
Chemistry, Physical
Wenjun Liu, Kun Jiang, Yiming Hu, Qian Li, Yilin Deng, Jian Bao, Yucheng Lei
Summary: The Zr-doped layered double hydroxide on nickel foam was designed to enhance the bifunctional activities of electrocatalysts, showing superior OER and HER activities in 1M KOH and alkaline simulated seawater electrolyte. The CoFeZr/NF provides a new pathway for large-scale hydrogen production, with almost no attenuation when tested in alkaline seawater electrolyte compared to 1.0 M KOH.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Yongchao Yao, Chaoxin Yang, Shengjun Sun, Hui Zhang, Meiqi Geng, Xun He, Kai Dong, Yonglan Luo, Dongdong Zheng, Weihua Zhuang, Sulaiman Alfaifi, Asmaa Farouk, Mohamed S. Hamdy, Bo Tang, Shuyun Zhu, Xuping Sun, Wenchuang (Walter) Hu
Summary: This study investigates an efficient and stable electrocatalyst for seawater oxidation in alkaline conditions, using Cr-doped CoFe-layered double hydroxide nanosheet array. The catalyst achieves high current densities at low overpotentials and exhibits good stability.
Article
Chemistry, Physical
Sankhula Lokesh, Rohit Srivastava
Summary: The production of green H2 through water electrolysis processes has been recognized as a crucial technology to address global energy and environmental crisis. This paper presents the synthesis of a highly efficient 2D CuAl LDH electrocatalyst for green H2 production. The electrocatalyst was characterized using various analytical techniques and its performance was evaluated in different electrolyte mediums. The results demonstrate that the CuAl LDH electrocatalyst exhibits excellent performance in terms of current density and bifunctional activity in acidic medium, indicating its potential for industrial-scale green H2 production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Multidisciplinary Sciences
Huachuan Sun, Linfeng Li, Hsiao-Chien Chen, Delong Duan, Muhammad Humayun, Yang Qiu, Xia Zhang, Xiang Ao, Ying Wu, Yuanjie Pang, Kaifu Huo, Chundong Wang, Yujie Xiong
Summary: This study reports a multifunctional electrocatalyst, Rh/NiV-LDH, which integrates NiV-LDH and Rh single-atom catalyst for efficient urea electrolysis and hydrogen fuel generation. The electrocatalyst demonstrates excellent activity in both HER and urea oxidation reactions, indicating its potential for wastewater purification and energy conversion. The research provides important insights and references for multifunctional SAC design.
Article
Chemistry, Physical
Kai Wu, Qing Ye, Lanyang Wang, Fanwei Meng, Hongxing Dai
Summary: By loading PEI and LDH onto the surface of SBA-15, the composite material with an ordered porous structure showed excellent CO2 adsorption performance, which was attributed to its high BET surface area, abundant basic sites, and fast adsorption kinetics.
APPLIED CLAY SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Lakshya Kumar, Purna K. Boruah, Sukanya Borthakur, Lakshi Saikia, Manash R. Das, Sasanka Deka
Summary: A flexible high-performance supercapacitor cell using nanostructured CuCo-layered double hydroxide (LDH) as electrode material is reported for the first time, showing specific capacity, capacitance, cell voltage, energy density, and power density values. The flexible cell offers long-term stability and Coulombic efficiency, while providing valuable concepts for understanding its exceptional charge storage characteristics.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Kai Wu, Qing Ye, Lanyang Wang, Fanwei Meng, Hongxing Dai
Summary: A novel kind of CO2 solid adsorbents was prepared by loading layered double hydroxides (LDH) on mesoporous alumina (MA) support. The LDHs were evenly distributed on the surface of MA, resulting in improved CO2 adsorption performance through chemical adsorption and storage of CO2 in the form of carbonate. This new adsorbent has great potential in CO2 adsorption applications.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Chemistry, Multidisciplinary
S. Song, Y. Fu, F. Yin, Y. Zhang, J. Ma, Y. Liu, J. Ren, W. Ye, R. Ma
Summary: In this study, a NiFe-based heterostructure catalyst composed of NiFe-based LDH nanosheets and amorphous NiFe-tungstate nanoparticles on a graphene substrate was proposed. The catalyst exhibited superb electrocatalytic activity for oxygen evolution reaction (OER) in an alkaline electrolyte, surpassing the benchmark IrO2 catalyst in terms of overpotential and Tafel slope. Moreover, it showed superior stability and durability compared to IrO2. The hetero-assembly of NiFe-LDH and NiFeWO4 generated more efficient active sites for OER, leading to improved performance.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Environmental Sciences
Mengxue Wang, Yuge Wang, Jiahao Sun, Jianzheng Zhen, Weiyang Lv
Summary: Iron-based layered double hydroxides (LDHs) have low efficiencies due to electrostatic agglomeration and low electronic conductivity. A MgFeAl LDH/carbonitride (LDH/CN) heterostructure was constructed by triggering the interlayer reaction of citric acid (CA) and urea. The LDH/CN heterostructure achieved nearly 100% bisphenol A (BPA) removal rate in 10 min and exhibited efficient interfacial electron transfer for rapid pollutant degradation. This study provides a rational strategy for forming heterostructure catalysts for environmental cleanup.
Article
Nanoscience & Nanotechnology
Chaonan Wang, Huiqin Yao, Zidan Cai, Senkai Han, Keren Shi, Zhenglong Wu, Shulan Ma
Summary: The development of low-cost and high-efficiency iodine sorbents is essential for nuclear pollution control. In this study, we intercalated the tin sulfide cluster of [Sn2S6](4-) into Mg/Al-type layered double hydroxides to obtain Sn2S6-LDH, which exhibited highly efficient capture performance for iodine in both vapor and solution forms. The adsorption capacity of Sn2S6-LDH for iodine vapor reached 2954 mg/g, mainly through physisorption, while the sorption capacity for iodine in solutions achieved a significantly large value of 1308 mg/g. During iodine capture, the reduction of I-2 molecules to I- ions by S2- in [Sn2S6](4-) led to the formation of SnI4, where the amount of captured iodine was four times that of Sn. The excellent iodine capture capability of Sn2S6-LDH makes it a promising material for trapping radioactive iodine.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Wenwen Song, Yanqi Xu, Xiangli Xie, Cunjun Li, Wenfeng Zhu, Qiankun Xiang, Wei Chen, Ningli Tang, Linjiang Wang
Summary: In this study, a Pd/Co1Fe3-LDH/NF electrocatalyst for ethanol oxidation reaction (EOR) in direct ethanol fuel cells was prepared using a two-step synthetic strategy. The metal-oxygen bonds formed between Pd nanoparticles and Co1Fe3-LDH/NF ensured structural stability and sufficient exposure of surface-active sites. The charge transfer of the Pd-O-Co-(Fe) bridge effectively modulated the electrical structure of hybrids, enhancing the absorption of OH- radicals and oxidation of COads. The specific activity of Pd/Co1Fe3-LDH/NF (17.46 mA cm(-2)) was 97 and 73 times higher than that of commercial Pd/C (20%) (0.18 mA cm(-2)) and Pt/C (20%) (0.24 mA cm(-2)), respectively. The j (f)/j (r) ratio representing the resistance to catalyst poisoning in the Pd/Co1Fe3-LDH/NF catalytic system was 1.92. These findings provide insights for optimizing the electronic interaction between metals and electrocatalyst supports for EOR.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Yun Li, Hao Xu, Peixia Yang, Ruopeng Li, Dan Wang, Penghui Ren, Shanshan Ji, Xiangyu Lu, Fan Meng, Jinqiu Zhang, Maozhong An
Summary: Reasonable construction of heterostructure is an effective strategy to enhance the intrinsic activity of catalysts in both hydrogen and oxygen evolution reactions. In this study, a heterostructure of CoNiP and NiFe layered double hydroxides (CoNiP@NiFe LDHs) was successfully prepared. The rearrangement of electrons at the interface between CoNiP and NiFe LDHs, as well as the collection of charges in the NiFe LDHs layer, significantly improved the adsorption and evolution reaction performance of hydrogen and oxygen.
MATERIALS TODAY ENERGY
(2022)
Article
Engineering, Environmental
Jiahui Ge, Lili Lian, Xiyue Wang, Xueling Cao, Wenxiu Gao, Dawei Lou
Summary: Layered double hydroxides (LDHs) and layered double oxides (LDOs) are excellent adsorption materials for printing and wastewater treatment due to their anion exchange abilities and active sites. A versatile LDO hybrid coated with carbon dots (CDs@MgAl-LDO) was developed and showed superior adsorption performance for various dyes, following a pseudo-second-order kinetic model with high R-square values. This study provides a facile approach for preparing carbon dots-LDH hybrids with efficient dye removal capabilities.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Physical
Teng He, Yi He, Hongjie Li, Xiangying Yin, Jing Ma, Heng Shi, Liang Zhou, Li Chen
Summary: This study successfully synthesized a 3D hierarchical heterostructure precursor on NiCo-layered double hydroxides through surface engineering strategy, which can be further transformed into a tri-metallic phosphide with excellent catalytic performance. Additionally, urea-assisted system was found to have energy saving advantage superior to traditional water splitting in alkaline electrolyte.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Jiawei Guo, Zhuojun Wei, Kun Wang, Hui Zhang
Summary: CoFe-LDH nanosheet arrays with excellent electrocatalytic performance were synthesized via citric acid-assisted aqueous phase coprecipitation on rGO-modified Ni foam, showing promising applications for oxygen and hydrogen evolution reactions, as well as overall water splitting.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Review
Chemistry, Physical
Wenxian Liu, Jinxiu Feng, Tianran Wei, Qian Liu, Shusheng Zhang, Yang Luo, Jun Luo, Xijun Liu
Summary: Aqueous rechargeable Zn-gas batteries are considered promising energy storage and conversion devices due to their safety and environmental friendliness. However, their energy efficiency and power density are limited by slow cathode reactions. This review introduces battery configurations and fundamental reactions, summarizes recent advances in active site engineering and cathode material regulation strategies, and provides personal perspectives on the future development of Zn-gas batteries.
Article
Chemistry, Physical
Changfei Jing, Yongji Qin, Wengen Ouyang, Jun Luo
Summary: In this study, a pseudo-break imaging method has been proposed and realized on carbon nanotubes (CNTs), which can accurately measure the bending energies of CNTs and manipulate their bending shapes and energies. This work is of great significance to the fundamental and applied studies of one-dimensional nanomaterials.
Review
Chemistry, Multidisciplinary
Guolong Lu, Zhigui Wang, Shusheng Zhang, Junyang Ding, Jun Luo, Xijun Liu
Summary: As the global population grows rapidly, energy resources are facing significant shortages. The development of renewable resources is urgently needed to meet human demands. The redox flow battery (RFB) is a cost-effective, stable, and convenient solution for large-scale stationary electrical energy storage applications, unlike lithium-ion batteries which have safety and cost concerns. The aqueous redox flow battery (ARFB), in particular, shows promise for larger power grids due to its unique energy storage mechanism using electrolyte-filled tanks. By controlling the volume and concentration of electro-active species (EAS), the ARFB can modulate battery parameters. Halogens offer excellent properties as EAS for ARFB, such as low cost and appropriate potential, leading to an efficient, safe, and affordable energy storage system (ESS). Additionally, material (electrode) design and adjustment are crucial for achieving strong activity, high sensitivity, convenience, and practicality.
Review
Chemistry, Multidisciplinary
Xianghua Hou, Junyang Ding, Wenxian Liu, Shusheng Zhang, Jun Luo, Xijun Liu
Summary: Single-atom catalysts (SACs) are widely used in renewable energy storage and conversion systems. Various supports, such as organic, metal, and carbonaceous matrices, have been developed to stabilize single-atom catalytic sites. The coordination structure of metal species greatly affects the electrocatalytic capabilities of metal atom active centers, especially in asymmetric atom electrocatalysts that exhibit unique properties and different CO2 reduction reaction (CO2RR) performance. This review summarizes the recent development of asymmetric atom sites for CO2RR and emphasizes the strategies for regulating coordination structure and its effect on CO2RR performance. It also proposes scientific possibilities to further advance asymmetric atom electrocatalysts for CO2RR.
Article
Materials Science, Multidisciplinary
Sanshuang Gao, Tianwei Wang, Mengmeng Jin, Shusheng Zhang, Qian Liu, Guangzhi Hu, Hui Yang, Jun Luo, Xijun Liu
Summary: In this study, a bifunctional catalyst for CO2RR and ORR reactions in aqueous Zn-air batteries (ZAB) was developed. The catalyst, consisting of atomically dispersed niobium anchored onto N-doped ordered mesoporous carbon (Nb-N-C), exhibited high activity for CO2RR, ORR, and ZAB, thanks to the high Nb atom-utilization efficiency and ordered mesoporous structure. Furthermore, the self-powered CO2 electrolysis system showed promising performance with continuous CO2 conversion.
SCIENCE CHINA-MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Haipeng Wang, Fei Zhang, Mengmeng Jin, Donglin Zhao, Xiaoya Fan, Zerong Li, Yongsong Luo, Dongdong Zheng, Tingshuai Li, Yan Wang, Binwu Ying, Shengjun Sun, Qian Liu, Xijun Liu, Xuping Sun
Summary: A highly efficient electrocatalyst for NO2 reduction to NH3 was reported in this study, which consisted of V-doped TiO2 nanobelt array on a titanium plate. Both experimental results and theoretical calculations revealed that V doping enhanced the electrical conductivity of the nanobelt and optimized the free energy of the TiO2 specialIntscript crystal plane in the potential determining step, resulting in a positive effect on the electrochemical NO2 reduction to NH3. The designed V-TiO2/TP exhibited outstanding electrochemical NO2 reduction performance with a high NH3 yield of 540.8 μmol h-1 cm-2 at -0.7 V and an excellent Faradaic efficiency of 93.2% at -0.6 V versus reversible hydrogen electrode, surpassing TiO2/TP.
MATERIALS TODAY PHYSICS
(2023)
Correction
Electrochemistry
Yujie Dai, Xiaorong Yan, Jianze Zhang, Chuanguang Wu, Qiuquan Guo, Jun Luo, Mingjun Hu, Jun Yang
ELECTROCHIMICA ACTA
(2023)
Review
Energy & Fuels
Junyang Ding, Wenxian Liu, Shusheng Zhang, Jun Luo, Xijun Liu
Summary: Energy is the foundation of human society. Single-atom catalysts (SACs) have shown great potential as electrode materials in the energy field due to their unique characteristics. This review focuses on the recent progress in asymmetric atomic catalysts for the hydrogen evolution reaction (HER), including low coordination, heteroatomic coordination, and bimetallic coordination. The connection between coordination structures and electrocatalytic performance is discussed, and the challenges and insights for the development of high-quality asymmetric atomic catalysts are summarized.
Article
Chemistry, Inorganic & Nuclear
Junyang Ding, Xianghua Hou, Yuan Qiu, Shusheng Zhang, Qian Liu, Jun Luo, Xijun Liu
Summary: In this study, Fe-doped MoS2 nanosheets grown on carbon cloth were developed as an efficient catalyst for the reduction of NO3- to NH3 in an aqueous electrolyte, achieving a maximal Faradaic efficiency of 90% and a peak yield rate of 9.75 mg h-1 cm-2 for NH3 production. The catalyst exhibited good stability and was used in a Zn-nitrate battery, achieving a peak power density of 3.56 mW cm-2. These results highlight the potential of MoS2 for electrolytic production of valuable chemicals.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Weiqing Zhang, Xuhui Qin, Tianran Wei, Qian Liu, Jun Luo, Xijun Liu
Summary: A high-performance catalyst made of single atomic Ce sites anchored on nitrogen-doped hollow carbon spheres has been developed. It can efficiently electrocatalyze the reduction of NO to NH3 in an acidic solution, achieving a maximal Faradaic efficiency of 91% and a yield rate of 1023 lg h-1 mgcat.-1. The catalyst outperforms Ce nanoclusters and shows good structural and electrochemical stability.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Multidisciplinary Sciences
Dawei Yao, Yue Wang, Ying Li, Antai Li, Ziheng Zhen, Jing Lv, Fanfei Sun, Ruoou Yang, Jun Luo, Zheng Jiang, Yong Wang, Xinbin Ma
Summary: The authors present a facile method for scalable synthesis of stable supported Cu cluster catalysts by atomic diffusion of Cu from supported Cu nanoparticles to CeO2 at a low temperature. The resulting Cu clusters exhibit high yield of intermediate product in consecutive hydrogenation reactions due to their balanced adsorption and dissociation abilities. This scalable synthesis strategy brings stable Cu cluster catalysts closer to practical semi-hydrogenation applications.
NATURE COMMUNICATIONS
(2023)
Article
Engineering, Chemical
Shangcong Zhang, Qian Liu, Xinyue Tang, Zhiming Zhou, Tieyan Fan, Yingmin You, Qingcheng Zhang, Shusheng Zhang, Jun Luo, Xijun Liu
Summary: This study demonstrates that phosphorus-doped titania nanotubes can serve as a highly efficient catalyst for nitric oxide reduction reaction (NORR) in ionic liquid-based electrolyte. The catalyst exhibits impressive performance with a high Faradaic efficiency of 89% and NH3 yield rate of 425 μg·m^-1·mg(cat.)^-1, which is close to the best-reported results. It highlights the advantage of catalyst-electrolyte engineering strategy for high-efficiency and high-rate NH3 production.
FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING
(2023)
