Article
Chemistry, Multidisciplinary
Paula Mayorga-Burrezo, Jose Munoz, Dagmar Zaoralova, Michal Otyepka, Martin Pumera
Summary: The development of versatile bio-inspired 2D-MXenes using molecular engineering allows for the creation of highly sensitive sensing platforms with excellent performance transfer and intriguing potential applications.
Article
Nanoscience & Nanotechnology
Ziyu Wang, Yimo Qin, Xin Wu, Kui He, Xiaolong Li, Juan Wang
Summary: The construction of a 1D/2D hierarchical heterostructured photoanode was studied for photoelectrochemical water oxidation. It was found that the attachment of ultra-thin Hematene on an ordered ZnO nanorod array significantly improved the onset potential and incident photon-to-current efficiency of the photoelectrochemical reaction, overcoming the limitations of light absorption and electron-hole recombination.
Article
Chemistry, Physical
Yanyi Wang, Sicheng Shen, Ming Yang, Bo Yong, Yongchang Liang, Dingtao Ma, Suhang Wang, Peixin Zhang
Summary: In this study, a sandwich-like Ti3C2Tx MXene-bridged VO2 heterostructure was proposed to address the challenges of aggregation and sluggish reaction kinetics in cathode materials for aqueous zinc-ion batteries. The resulting electrode exhibited improved storage performance with high specific capacity, excellent rate capability, and cyclic stability. The storage mechanism and potential applicability of this strategy for other cathode materials were also investigated.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Yi Tan, Li Yang, Dong Zhai, Lanju Sun, Shengliang Zhai, Wei Zhou, Xiao Wang, Wei-Qiao Deng, Hao Wu
Summary: In this study, a novel method of incomplete in situ conversion was used to form MOF@MXene heterostructures, which significantly improved the electrochemical sensing performance of metal-organic framework (MOF) catalysts towards nitric oxide (NO) molecules. Density functional theory and molecular mechanics calculations revealed the metal-like electronic properties and enhanced NO adsorption energies of the heterostructures. This research may promote the development of advanced electrochemical sensing technologies.
Article
Chemistry, Multidisciplinary
Shi Pu, Zixing Wang, Yanting Xie, Jintao Fan, Zhong Xu, Yihan Wang, Hanyu He, Xiong Zhang, Weiqing Yang, Haitao Zhang
Summary: MXene-based supercapacitors have great potential as electrochemical energy-storage devices due to their high volumetric capacitance, high-power characteristics, and good cyclability. However, they suffer from severe self-discharging behavior and the underlying mechanism is unclear. In this study, the self-discharge behavior of MXene-based supercapacitors is found to be related to the surface electronic structure of MXenes, and a novel method to mitigate this behavior is proposed. By using a bio-thermal treatment, the surface electronic structure of Ti3C2Tx MXenes can be effectively modified, leading to a more than 20% decrease in the self-discharge rate of MXene-based supercapacitors with common aqueous electrolytes. This decrease is attributed to the increased work function and strengthened surface dipole between MXene and electrolytes, resulting in weaker self-discharge kinetics.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Wenxiang Cheng, Jimin Fu, Haibo Hu, Derek Ho
Summary: By inserting 1D core-shell conductive BC@PPy nanofibers between MXene nanosheets, the interlayer structure engineering effectively enhances ion and electron transport within the MXene structure, significantly increasing the areal capacitance of the electrode and achieving a battery-level energy density in the ZHMSCs.
Article
Engineering, Environmental
Chao Peng, Xi Xie, Wenkang Xu, Tao Zhou, Ping Wei, Jianbo Jia, Kun Zhang, Yonghai Cao, Hongjuan Wang, Feng Peng, Rui Yang, Xiqiang Yan, Hui Pan, Hao Yu
Summary: Steering charge kinetics is crucial in photocatalysis. In this study, Nb2O5 nanorods were grown on Nb2CTx MXenes, forming hierarchical nanohybrids with excellent photocatalytic performance, showcasing the potential of MXenes for high-performance heterojunction structures.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Prakarsh Yadav, Zhonglin Cao, Amir Barati Farimani
Summary: Nanopore based sequencing offers high-throughput sequencing with lower costs and time requirements. Two-dimensional nanomaterials like graphene are being explored as solid-state platforms for DNA sequencing, but material selection is crucial. Recent developments in MXene synthesis have sparked interest in its application as a DNA detection material.
Review
Chemistry, Physical
Philippe Serp
Summary: Catalytic active sites composed of isolated metal single atoms are present in enzymatic, homogeneous, and heterogeneous catalysts. Single-atom catalysts (SACs) in heterogeneous catalysis have the potential to exhibit high reactivity and selectivity, provided that their local coordination environment and electronic properties are properly tuned. These sites possess distinctive properties compared to metal nanoparticles or clusters. Despite the challenges in achieving catalysts with high homogeneity of active sites in supported catalysis, a growing body of research has shown the potential synergy between these two species to enhance catalytic performance. This mini-review discusses the different types of synergies, as well as the challenges and opportunities for these catalysts in thermal, electro, and photo-catalysis.
Article
Chemistry, Physical
Yuwei Zheng, Hefei Hua, Kui He, Juan Wang
Summary: The research reported a hierarchical structure composed of a conductive carbon nanotube backbone core and electrocatalytic active Mo-S-Ni nanosheets, showing excellent performance in the hydrogen evolution reaction with low overpotential and high stability.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Jack W. Jordan, Beth Mortiboy, Andrei N. Khlobystov, Lee R. Johnson, Graham N. Newton, Darren A. Walsh
Summary: Understanding ion transport in solid materials is crucial for the design of electrochemical devices. This study focuses on investigating ion transport across atomically thin structures using a host-guest hybrid redox material based on polyoxometalates (POMs) encapsulated within single-walled carbon nanotubes (SWNTs). The nanotube sidewall acts as a barrier between the redox-active molecules and bulk electrolytes, allowing for the characterization of ion transport through electrochemical methods. The findings highlight the importance of the nature of the cation in the supporting electrolyte and the role of proton transport in the redox chemistry of nanoconfined redox materials.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Wengang Qu, Shiyao Niu, Da Sun, Hongxu Gao, Yishang Wu, Zhifeng Yuan, Xueli Chen, Ying Wang, Ting An, Gongming Wang, Fengqi Zhao
Summary: The study demonstrates that using PDA-Pb catalyst can significantly improve the burning rate of RDX-based solid propellants, with stable combustion performance. Additionally, PDA-Pb also shows catalytic behavior towards the decomposition of nitrocellulose, indicating broad catalytic generality.
Article
Chemistry, Multidisciplinary
Xiao Tang, Xingce Fan, Jun Zhou, Shuo Wang, Mingze Li, Xiangyu Hou, Kewei Jiang, Zhenhua Ni, Bei Zhao, Qi Hao, Teng Qiu
Summary: The chemical mechanism of surface-enhanced Raman scattering (SERS) amplifies Raman scattering, but the lack of charge transfer between the SERS substrate and molecules hinders Raman enhancement. Two-dimensional transition-metal dichalcogenide alloys with tunable energy levels are investigated to construct charge transfer resonance channels for specific target molecules in SERS. The SERS signals are reproducible, and the dependence of SERS on energy levels is revealed.
Article
Chemistry, Multidisciplinary
Shiping Yang, Jianyu Zhang, Zhijun Zhang, Rongyuan Zhang, Xinwen Ou, Weilin Xu, Miaomiao Kang, Xue Li, Dingyuan Yan, Ryan T. K. Kwok, Jianwei Sun, Jacky W. Y. Lam, Dong Wang, Ben Zhong Tang
Summary: The manipulation of electron donor/acceptor (D/A) plays a crucial role in innovating optical materials. While there has been significant development in electron donor design, research on electron acceptor engineering has been limited. In this study, two systems based on acceptor engineering were designed and studied, demonstrating the effectiveness of the dual-connected acceptor tactic in achieving improved aggregation-induced emission (AIE) and performance of phototheranostic agents.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Inorganic & Nuclear
Huajie Huang, Ya Xue, Yongshuai Xie, Ying Yang, Lu Yang, Haiyan He, Quanguo Jiang, Guobing Ying
Summary: In this study, a controllable assembly approach was proposed to construct a heterostructured nanoarchitecture using ultrafine MoS2 quantum dot-decorated Ti3C2Tx MXene nanosheets (MQDs/Ti3C2Tx). The resulting MQD/Ti3C2Tx catalyst exhibited superior hydrogen evolution reaction (HER) properties due to its remarkable structural features, homogeneous MoS2 distribution, optimized electronic structure, and good electron conductivity.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Physical
Jian Yang, Tianyi Wang, Xin Guo, Xiaoxue Sheng, Jiabao Li, Chengyin Wang, Guoxiu Wang
Summary: This study reports a free-standing and flexible Sb2S3/Ti3C2Tx composite film for high-capacity, fast and stable sodium storage. The hybrid nanostructure of Sb2S3 nanowires anchored between Ti3C2Tx nanosheets enables outstanding rate performance and cyclic stability in the composite anodes. The flexible sodium-ion capacitors using Sb2S3/Ti3C2Tx anodes and active carbon/reduced graphene oxide paper cathodes exhibit superior energy and power densities, as well as excellent cycling performance.
Article
Chemistry, Multidisciplinary
Javad Safaei, Yifu Gao, Mostafa Hosseinpour, Xiuyun Zhang, Yi Sun, Xiao Tang, Zhijia Zhang, Shijian Wang, Xin Guo, Yao Wang, Zhen Chen, Dong Zhou, Feiyu Kang, Lei Jiang, Guoxiu Wang
Summary: This study demonstrates that vacancy engineering is an effective strategy to enhance the permselectivity of 2D nanofluidic membranes for high-efficiency osmotic energy generation. By creating phosphorus vacancies on NbOPO4 (NbP) nanosheets, the negative surface charge is remarkably increased, resulting in fast transmembrane ion migration and high ionic selectivity. When applied in a natural river water|seawater osmotic power generator, the macroscopic-scale V-NbP membrane delivers a record-high power density of 10.7 W m(-2), surpassing the commercial benchmark of 5.0 W m(-2).
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Physics, Applied
Chaoyue Zhang, Junan Feng, Xin Guo, Jinqiang Zhang, Wenxue Zhang, Lixue Zhang, Jianjun Song, Guangjie Shao, Guoxiu Wang
Summary: Core-shell SiO2@Ti3C2Tx MXene hollow spheres are used as multifunctional catalysts to enhance the performance of Li-S batteries. The dual-polar and dual-physical properties of SiO2 core and MXene shell provide multiple defense lines to the shuttle effect of lithium polysulfides (LiPSs). The SiO2@MX/S electrodes exhibit high capacity, remarkable cycling stability, and low capacity decay, highlighting the significance of core-shell dual-polar structural sulfur catalysts for practical application in advanced Li-S batteries.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Zhe Bai, Zhenhua Wang, Ruilong Li, Zeyu Wu, Pingli Feng, Lina Zhao, Tan Wang, Wenshuo Hou, Yu Bai, Guoxiu Wang, Kening Sun
Summary: A triple-phase interface engineering approach using the electrically conductive layered double perovskite PrBaCo2O5+delta (PBCO) is proposed to enhance the electrocatalytic conversion of polysulfides in lithium-sulfur batteries. DFT calculations and in situ Raman spectroscopy confirm that PBCO's enhanced electrical conductivity plays a critical role in the electrocatalytic effect. PBCO-based Li-S batteries exhibit an impressive reversible capacity of 612 mAh g(-1) after 500 cycles with a capacity fading rate of 0.067% per cycle. This work reveals the mechanism of the enriched triple-phase interface approach and provides new insights for designing high-performance catalysts for Li-S batteries.
Editorial Material
Multidisciplinary Sciences
Guoxiu Wang
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Review
Chemistry, Multidisciplinary
Jing Xu, Yashuang Qiu, Jianhao Yang, Haolin Li, Pingan Han, Yang Jin, Hao Liu, Bing Sun, Guoxiu Wang
Summary: This review comprehensively discusses the latest advances in modifying separators for high-performance sodium-sulfur/selenium/iodine batteries. The article first discusses the reaction mechanisms of each battery system, and then summarizes different separator modification strategies for regulating the shuttle effect of polysulfides/polyselenides/polyiodides, including applying electrostatic repulsive interaction, introducing conductive layers, improving sieving effects, enhancing chemisorption capability, and adding efficient electrocatalysts. Future perspectives on the practical application of modified separators in high-energy rechargeable batteries are also provided.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Physics, Applied
Xiaokang Xu, Tianxia Guo, Yujie Liu, Anjie Chen, Xiangfei Zhu, Shu Wang, Ailei He, Jinlian Lu, Yongjun Liu, Xiuyun Zhang
Summary: In this study, stable 2D robust QAH monolayers, Ti3X5 (X = S, Se), with high Chern number |C| = 2, were theoretically predicted through first-principles calculations. The bandgap with two chiral edge modes was opened when spin-orbital coupling (SOC) was turned on. Additionally, phase transitions from C = -2 to C = 2 or C = 0 could be achieved by rotating the magnetization direction or applying external strains.
APPLIED PHYSICS LETTERS
(2023)
Article
Physics, Applied
Xianghong Niu, Xuemei Zhang, Anqi Shi, Dazhong Sun, Ruilin Guan, Wenchao Shan, Fengfeng Chi, Shasha Li, Bing Wang, Xiuyun Zhang
Summary: The construction of van der Waals heterojunctions with a suitable twisted angle is an efficient strategy to regulate the photocatalytic properties of two-dimensional materials. The twisted C3N/C3B heterojunctions enhance the built-in electric field, improve the visible light response, and reduce the overpotential for the oxygen evolution reaction. The interlayer torsion provides an effective regulation strategy to improve the overall water splitting performance.
APPLIED PHYSICS LETTERS
(2023)
Article
Physics, Applied
Dazhong Sun, Wentao Li, Anqi Shi, Kaifei Liu, Wenxia Zhang, Huabing Shu, Fengfeng Chi, Bing Wang, Xiuyun Zhang, Xianghong Niu
Summary: Doping to induce suitable impurity levels is an effective strategy to achieve highly efficient photocatalytic overall water splitting. This study finds that the impurity atom can change electrostatic potential gradient and polarity, significantly affecting the spatial electron density and adjusting the impurity level position. By meeting the redox potential requirement, suitable impurity levels are obtained, expanding the visible light absorption range. Meanwhile, the enhanced polarity induced by doping improves the redox ability of photogenerated carriers and promotes water adsorption and subsequent splitting.
APPLIED PHYSICS LETTERS
(2023)
Article
Physics, Applied
Jinlian Lu, Xiaokang Xu, Yuanyuan Duan, Yi Sun, Donghao Guan, Anjie Chen, Xiaojing Yao, Ailei He, Xiuyun Zhang
Summary: Using density functional theory calculations, we predicted two stable two-dimensional kagome structures and found that they are intrinsic quantum anomalous hall (QAH) insulators. Without spin-orbit coupling, these structures exhibit ferromagnetic Weyl semimetal states. With spin-orbit coupling, they create QAH states with large nontrivial bandgaps and chiral edge states.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Physical
Rui Kai Miao, Ning Wang, Sung-Fu Hung, Wen-Yang Huang, Jinqiang Zhang, Yong Zhao, Pengfei Ou, Sasa Wang, Jonathan P. Edwards, Cong Tian, Jingrui Han, Yi Xu, Mengyang Fan, Jianan Erick Huang, Yurou Celine Xiao, Alexander H. Ip, Hongyan Liang, Edward H. Sargent, David Sinton
Summary: This study presents a cement production method based on electrochemical calcium extraction, addressing both feedstock and energy emissions, and enabling carbon utilization and sequestration. Technoeconomic analysis indicates the potential of this method to be a viable decarbonized cement alternative.
ACS ENERGY LETTERS
(2023)
Article
Chemistry, Physical
Mengyang Fan, Jianan Erick Huang, Rui Kai Miao, Yu Mao, Pengfei Ou, Feng Li, Xiao-Yan Li, Yufei Cao, Zishuai Zhang, Jinqiang Zhang, Yu Yan, Adnan Ozden, Weiyan Ni, Ying Wang, Yong Zhao, Zhu Chen, Behrooz Khatir, Colin P. O'Brien, Yi Xu, Yurou Celine Xiao, Geoffrey I. N. Waterhouse, Kevin Golovin, Ziyun Wang, Edward H. Sargent, David Sinton
Summary: By functionalizing a copper catalyst with cationic groups, efficient and stable electrochemical CO2 reduction (CO2R) can be achieved in an acidic environment. This method utilizes immobilized benzimidazolium cationic groups to replace alkali cations, resulting in over 150 hours of stable CO2R. The use of cationic groups with water-management property minimizes proton migration, enabling energy-efficient CO2R with a C2+ Faradaic efficiency of 80% +/- 3%.
Article
Chemistry, Physical
Tianyi Wang, Wei Gu, Lu Yu, Xin Guo, Jian Yang, Xiaoyu Sun, Jun Guan, Lin Zhou, Chengyin Wang, Hang Yao, Xiuyun Zhang, Guoxiu Wang
Summary: This article discovers the highly efficient adsorption capability of Ti3C2Tx MXene as a hemoperfusion absorbent for removing uremic toxins in the treatment of kidney disease. The molecular scale investigations reveal the reasons behind this high efficiency.
JOURNAL OF MATERIOMICS
(2023)
Review
Chemistry, Multidisciplinary
Jun Xiao, Yang Xiao, Jiayi Li, Cheng Gong, Xinming Nie, Hong Gao, Bing Sun, Hao Liu, Guoxiu Wang
Summary: Considering the abundance and low price of sodium, sodium-ion batteries (SIBs) have great potential as an alternative to lithium-based batteries in large-scale energy storage. Layered transition-metal oxides (LTMOs) are regarded as the most promising cathode materials for SIBs due to their high specific capacity and suitable preparation methods. However, their practical utilization is hindered by irreversible structural evolution, slow kinetics, and water sensitivity. Nanoengineering provides an opportunity to address these issues and improve the performance of LTMOs.
