Review
Chemistry, Physical
Yan Dong, Sridhar Komarneni
Summary: This study systematically reviews and summarizes the progress made in the research and development of earth-abundant heterogeneous catalysts for OER in three pH-neutral or pH-near-neutral systems. Strategies for developing high-performance OER catalysts for neutral pH are also discussed, along with future challenges and opportunities in this field.
Article
Chemistry, Physical
Xiao Meng, Zaiqi Li, Yuanyuan Liu, Zeyan Wang, Peng Wang, Zhaoke Zheng, Ying Dai, Baibiao Huang, Hefeng Cheng, Jr-Hau He
Summary: An unassisted solar water splitting device with high efficiency and stability is reported, utilizing tandem III-V-based GaInP/GaAs/Ge light absorber and robust earth-abundant Ni foil-based MoNi4/MoO2 bifunctional electrocatalysts. The device exhibits a high solar-to-hydrogen (STH) conversion efficiency of 17.6% in alkaline electrolytes with long-term stability of up to 845 hours. Further construction into a wireless unassisted monolithic device could lead to an artificial leaf with an STH efficiency of 4.28%, holding great promise in future solar fuel production with high efficiency, good stability, and low cost.
Article
Chemistry, Multidisciplinary
Xiaojie Li, Qi Hu, Hengpan Yang, Tao Ma, Xiaoyan Chai, Chuanxin He
Summary: Researchers enhance the activity of electrocatalytic oxygen evolution reaction (OER) by increasing the conductivity, quantity, and quality of active sites of catalysts, using 2D engineering and heterometal doping strategies. This review summarizes the application of bimetallic 2D materials in electrocatalytic OER.
CHINESE CHEMICAL LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Zexing Wu, Yonglong Wang, Dongzheng Liu, Bowen Zhou, Pengfei Yang, Runze Liu, Weiping Xiao, Tianyi Ma, Jinsong Wang, Lei Wang
Summary: Developing green hydrogen energy has driven the progress of proton-exchange membrane water electrolyzers (PEMWE). However, finding cost-effective acidic catalysts for the complex oxygen evolution reaction (OER) in an acidic environment remains a challenging task. In this study, hexagonal-shaped and defect-rich MnOx/RuO2 heterojunction nanosheets (H/d-MnOx/RuO2) were designed, showing efficient performance with low overpotential.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Chemistry, Physical
Sami M. Ibn Shamsah
Summary: Sunlight is the most abundant renewable energy resource, but challenges exist in harvesting and processing this energy. Hydrogen generated from water electrolysis is an optimal energy carrier, requiring low-cost and non-toxic electrocatalysts. Major obstacles include high manufacturing costs, and potential future developments focus on efficient electrocatalysts production.
Article
Chemistry, Physical
Xiao-Hui Wang, Qing-Ling Hong, Ze-Nong Zhang, Zi-Xin Ge, Quan-Guo Zhai, Yu-Cheng Jiang, Yu Chen, Shu-Ni Li
Summary: In this study, ultrathin bimetallic hydroxide nanosheets were successfully synthesized using a cyanogel hydrolysis strategy boosted by NaBH4. The presence of hydrogen bubbles effectively prevented the self-stacking of nanosheets, resulting in high surface area and rich defective atoms. NiCo BMHs exhibited high electrocatalytic activity towards urea oxidation reaction due to their high surface area, rich edge active atoms, and synergistic effect between Ni2+ and Co2+/Co3+ species.
APPLIED SURFACE SCIENCE
(2022)
Review
Chemistry, Multidisciplinary
Joshua O. Olowoyo, Roelof J. Kriek
Summary: Electrocatalytic water splitting is a promising technology for producing clean and sustainable hydrogen. Bimetallic-based spinels are considered as potential electrocatalysts for the oxygen evolution reaction (OER). This review provides an overview of the recent progress in using bimetallic-based spinels as OER electrocatalysts, including their structures, classifications, and strategies for improving performance.
Article
Chemistry, Physical
Qingcui Liu, Jianhong Chen, Pan Yang, Feng Yu, Zhiyong Liu, Banghua Peng
Summary: By optimizing the molar ratio of Ni to Co, a bimetal 2-methylimidazole based 2D-MOF with 5% Ni/Co molar ratio was synthesized, showing excellent activity and good stability in OER.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Wanli Liang, Zhichen Le, Pengyu Dong, Zixuan Dan, Jiaxuan Chen, Hao Zhang, Jian Chen, Fangyan Xie, Nan Wang, Yanshuo Jin, Hui Meng
Summary: This study proposes a new PGM-free bifunctional hydrogen electrocatalyst, Janus Ni/W bimetallic materials. The synergistic effect of Ni and W in the bimetallic materials enhances the reaction kinetics of hydrogen evolution and hydroxide oxidation, resulting in the design of a high-efficiency and low-cost catalyst.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Yan Zhang, Fei Ye, Wei-Dong Z. Li
Summary: The self-assembled 2 D NiO/CeO2 heterostructure exhibits excellent bifunctional catalytic properties for both the HER and OER in alkaline conditions, including low onset overpotential, good durability, and large active surface area.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Multidisciplinary Sciences
Fucong Lyu, Shanshan Zeng, Zhe Jia, Fei-Xiang Ma, Ligang Sun, Lizi Cheng, Jie Pan, Yan Bao, Zhengyi Mao, Yu Bu, Yang Yang Li, Jian Lu
Summary: The authors report the synthesis of single iron atom-dispersed Mo-based nanosheets from a mineral hydrogel for hydrogen evolution reaction in alkaline condition. These nanosheets exhibit excellent activity and stability, making them promising catalysts for hydrogen production.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
Alvaro Seijas-Da Silva, Victor Oestreicher, Eugenio Coronado, Gonzalo Abellan
Summary: In this study, MgFe-based LDH phases were selected as model systems to investigate the effect of Fe-clustering on the OER performance. The results showed that samples with a lower Fe-clustering degree exhibited better electrocatalytic performance.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Multidisciplinary
Dejuan Fa, Yanhong Tao, Xin Pan, Dingjia Wang, Guangyuan Feng, Jiangyan Yuan, Qingqing Luo, Yaru Song, Xuejiao J. Gao, Ling Yang, Shengbin Lei, Wenping Hu
Summary: Innovative bimetallic materials offer possibilities for improving the performance of oxygen evolution reaction (OER) electrocatalysts. However, the rational design of bimetallic catalysts remains a challenge due to the difficulty in decoupling the factors influencing active site activity. This study presents a rational design of a bimetallic Ni, Co two-dimensional polymer model OER catalyst, with well-defined architecture and monolayer characteristic, allowing for the decoupling of intrinsic activity from other factors.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Xueqin Mu, Xiangyao Gu, Shipeng Dai, Jiabing Chen, Yujia Cui, Qu Chen, Min Yu, Changyun Chen, Suli Liu, Shichun Mu
Summary: The Ru single-atom system constructed on an iron-cobalt layered double hydroxide exhibits low overpotentials and high stability, surpassing commercial RuO2. Its mass activity is significantly higher than Ru and FeCo-LDH. The formation of an in situ Ru-O-TM nanocompound promotes O-O coupling and suppresses heteroatomic interface instability.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Chemistry, Physical
Lin-Yan Zhang, Yu-Mei Bao, Yan-He Chen, Qing Zhang, Na Zhang, Jian-Yong Zhang, Zhen-Jiang Liu
Summary: In the p-n junction of Co/Cu-ZIF/Fe2O3, electrons flow from n-type Fe2O3 to p-type bimetallic Co/Cu-ZIF, resulting in band bending and an inner electric field. Density function theory calculations showed that this change in electronic properties could enhance water oxidation performance. Experiments demonstrated that the Co/Cu-ZIF(1/1)/Fe2O3 heterojunction achieved a low overpotential and small Tafel slope, outperforming monometallic Co-ZIF and FC substrate. Furthermore, the p-n junction promoted the electrocatalytic degradation of 4-nitrophenol with high removal rate and low energy consumption. Therefore, MOFs-based p-n junctions with electron configuration modulation hold promise for boosting electrochemical water oxidation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
Yan Shao, Shan Yan, Jun Li, Zulmari Silva-Pedraza, Ting Zhou, Marvin Hsieh, Bo Liu, Tong Li, Long Gu, Yunhe Zhao, Yutao Dong, Bo Yin, Xudong Wang
Summary: This study reports a polyisobutylene (PIB) blend-based elastomer with tissue-like elastic modulus and excellent water resistivity. This material shows promise for packaging flexible implantable medical devices to achieve stable performance in a strained physiological environment.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Ziyi Zhang, Corey Carlos, Yizhan Wang, Yutao Dong, Xin Yin, Lazarus German, Kelvin Jordan Berg, Wei Bu, Xudong Wang
Summary: The design and synthesis of high-quality two-dimensional materials are crucial for controlling their properties. This study demonstrates an in situ X-ray scattering approach to directly observe the growth of wurtzite ZnO nanosheets at the air-water interface. The results reveal a switch between lateral and vertical growth kinetics, representing the evolution from two-dimensional to three-dimensional crystal structure.
Article
Multidisciplinary Sciences
Yutao Dong, Mehrdad Abbasi, Jun Meng, Lazarus German, Corey Carlos, Jun Li, Ziyi Zhang, Dane Morgan, Jinwoo Hwang, Xudong Wang
Summary: Amorphous titanium dioxide (TiO2) film coating by atomic layer deposition (ALD) is a promising strategy to extend the photoelectrode lifetime for solar fuel generation. In this work, it is revealed that residual chlorine (Cl) ligands are detrimental to the silicon (Si) photoanode lifetime. Post-ALD in-situ water treatment effectively improves the film stoichiometry and preserves the amorphous phase, leading to a substantially improved lifetime for the protected Si photoanode.
NATURE COMMUNICATIONS
(2023)
Article
Engineering, Electrical & Electronic
Long Gu, Yuxin Wang, Xianhao Wang, Saixuan Li, Weiwei Wang, Chen Li, Cheng Lin, Zixin Li, Jiongyao Xu, Nuanyang Cui, Jinmei Liu
Summary: A waste-plastic-material-based W-TENG with high output charge density is presented in this work. The TB-TENG, made from discarded take-out boxes, utilizes the excellent tribo-negative property of PP and strong charge trapping ability of PS. The maximum output charge density of TB-TENG reached 16.5 nC/cm2, which is in a leading position among waste material based TENGs. Furthermore, the TB-TENG is remodeled as a smart energy floor to power multiple functional electronics and even serve as a self-powered speed sensor in traffic surveillance systems.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Ziyi Zhang, Yutao Dong, Corey Carlos, Xudong Wang
Summary: This study demonstrates a strategy to modify the surface ligands on ultrathin Ni(OH)(2) nanosheets, which significantly improves their catalytic properties for alkaline ethanol oxidation reactions (EORs). Chemisorbed octadecylamine ligands can create an alcoholophilic layer on the nanosheet surface, promoting alcohol diffusion and adsorption, thereby enhancing the activity and selectivity of EORs over the oxygen evolution reaction. These non-noble-metal-based 2D electrocatalysts and surface ligand engineering showcase a promising strategy for achieving high-efficiency electrocatalysis of EORs in many practical electrochemical processes.
Article
Chemistry, Multidisciplinary
Corey Carlos, Jun Li, Ziyi Zhang, Kevin Jordan Berg, Yizhan Wang, Xudong Wang
Summary: Recent studies have found a correlation between the out-of-plane piezoelectric property and in-plane strains in nanometer-thick 2D ZnO nanosheets. Using in situ strain-correlated piezoresponse force microscopy, it was observed that the configuration of in-plane strains, whether tensile or compressive, greatly influences the measured piezoelectric coefficient. Comparisons of the out-of-plane piezoresponse under tensile and compressive strains approaching 0.50% showed a significant variation in the measured piezoelectric property. These findings highlight the importance of in-plane strain in the quantification and application of 2D piezoelectric materials.
Article
Multidisciplinary Sciences
Jun Li, Corey Carlos, Hao Zhou, Jiajie Sui, Yikai Wang, Zulmari Silva-Pedraza, Fan Yang, Yutao Dong, Ziyi Zhang, Timothy A. Hacker, Bo Liu, Yanchao Mao, Xudong Wang
Summary: In this study, a promising solution that integrates piezoelectricity, stretchability, and biocompatibility in one material system was presented, which is a critical step towards tissue-compatible biomedical devices.
NATURE COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Zulmari Silva Pedraza, Yizhan Wang, Corey Carlos, Zhongmin Tang, Jun Li, Weibo Cai, Xudong Wang
Summary: This study explores the use of piezoelectric microparticles as a method for inducing irreversible electroporation of breast cancer cells. The results show a reduction in cell viability, suggesting that this approach may offer a more benign cancer treatment option.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Ziyi Zhang, Maciej P. Polak, Corey Carlos, Yutao Dong, Dane Morgan, Xudong Wang
Summary: Two-dimensional ferromagnetic materials with strong room-temperature ferromagnetism have been synthesized using an ionic layer epitaxy strategy. The ferromagnetic strength of the NiOOH nanosheets can be controlled by adjusting the surfactant monolayer density and annealing process, offering a promising pathway for achieving strong ferromagnetism in two-dimensional materials for spintronic applications.
Article
Materials Science, Biomaterials
Jiajie Sui, Jun Li, Long Gu, Connor A. Schmidt, Ziyi Zhang, Yan Shao, Ehud Gazit, Pupa U. P. A. Gilbert, Xudong Wang
Summary: This study demonstrates a kinetic approach to control the crystal orientation of glycine films, resulting in enhanced piezoelectric properties.
JOURNAL OF MATERIALS CHEMISTRY B
(2022)
Article
Chemistry, Analytical
Zhihua Ying, Yin Long, Fan Yang, Yutao Dong, Jun Li, Ziyi Zhang, Xudong Wang
Summary: A self-powered triboelectric sensor based on liquid-solid electrification was developed for liquid chemical sensing, showing distinct sensitivity to different amino acids and versatile sensing ability for various inorganic and organic chemical compounds dissolved in DI water. This work demonstrates a promising sensing application based on the triboelectrification principle for biofluid sensor development.