Article
Chemistry, Physical
Pablo Salcedo-Abraira, Ruben Serrano-Nieto, Catalina Biglione, Maria Cabrero-Antonino, Sergio M. F. Vilela, Artem A. Babaryk, David Tilve-Martinez, Antonio Rodriguez-Dieguez, Sergio Navalon, Hermenegildo Garcia, Patricia Horcajada
Summary: Two three-dimensional metal-organic frameworks (MOFs) called IEF-8 and IEF-9, based on the pyrene tetraphosphonate ligand and copper, have been successfully synthesized and characterized. These MOFs exhibit good thermal and chemical stability, as well as photoresponse suitable for photocatalysis. Specifically, IEF-8 showed higher catalytic efficiency than the benchmarked Ti carboxylate photocatalyst MIL-125-(Ti)-NH2, producing 1800 mu mol center dot g(-1) of hydrogen after 22 hours of UV-vis irradiation without any co-catalyst.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Analytical
Hao Sun, Boxuan Jin, Shuyi Cao, Jinghan Zhang, Tianhang Li, Xiaojing Liu, Guihua Liu, Jingde Li
Summary: This study developed a low-cost and high-performance electrocatalyst for water splitting, which is crucial for hydrogen production. By introducing oxygen-deficient CeO2 nanoparticles on (Ni, Co)2P nanosheets, a high-performance hydrogen and oxygen evolution reaction bifunctional electrocatalyst was created. The introduction of defective CeO2 modulated the electronic structure of the CeO2@(Ni, Co)2P/NF interface, resulting in a synergistic effect that promotes the HER/OER reaction in alkaline water splitting.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Yue Xu, Tiantian Feng, Zhijie Cui, Pengfei Guo, Wenpin Wang, Zhongcheng Li
Summary: This study explores the preparation of Fe7S8/FeS2 heterostructured nanosheets and constructing efficient Fe7S8/FeS2/C electrocatalysts for overall water splitting with excellent electrochemical activity.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Xiuzhe Wang, Jing Sui, Zongzhao Li, Xinyue Jiang, Qian Zhang, Jianhua Yu, Lina Sui, Lifeng Dong
Summary: In this study, NiFe layered double hydroxides (LDHs) nanosheets were successfully prepared, and self-supporting Ni2P(O)-Fe2P(O)/CeOx nanosheets with excellent catalytic performance were in situ synthesized. This catalyst exhibits more active sites and fast electron transport in alkaline solution.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Review
Chemistry, Multidisciplinary
Yuting Luo, Zhiyuan Zhang, Manish Chhowalla, Bilu Liu
Summary: The electrochemical water splitting technology is crucial for achieving global carbon neutrality. High-performance electrocatalysts that can operate at high current densities are essential for the industrial implementation of this technology. Recent advancements in this field have led to the development of various catalysts designed specifically for high current densities (> 200 mA cm(-2)). This article discusses these recent advances and summarizes the key factors that influence the catalytic performance in high current density electrocatalysis, including catalyst dimensionality, surface chemistry, electron transport path, morphology, and catalyst-electrolyte interaction. It highlights the importance of a multiscale design strategy that considers these factors comprehensively for developing high current density electrocatalysts. The article also provides insights into the future directions of this emerging field.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Physical
Qirun Wang, Xiaoqiang Du, Xiaoshuang Zhang
Summary: The study focused on the preparation and characterization of NiCoM (M = P, S, Se, O)-Ni3S2-MoS2 hybrid material for electrochemical reactions. The NiCoP-Ni3S2-MoS2 exhibited high activity for the hydrogen evolution reaction, and the NiCoSe-Ni3S2-MoS2 showed excellent performance for the oxygen evolution reaction. The findings provide insights into the development of efficient and cost-effective catalysts for water splitting.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Review
Engineering, Environmental
Zhenyuan Zhang, Xiao Wu, Zongkui Kou, Na Song, Guangdi Nie, Ce Wang, Francis Verpoort, Shichun Mu
Summary: This article introduces the advantages of electrospun nanofibers as catalysts for electrocatalytic water splitting, as well as the latest developments and challenges in this field. The main topics covered in the article include the fundamentals of electrospun nanofibers, examples of different materials, mechanism understanding, and structure design.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Taotao Gao, Xiaoqin Li, Xiaojuan Chen, Caixia Zhou, Qu Yue, Hongyan Yuan, Dan Xiao
Summary: The study successfully prepared a unique Fe/C@CNT carrier with an improved heterostructure, enhancing the stability and efficiency of catalysts. The Ni-Ru@Fe/C@CNT exhibited superior bifunctional activity and enduring stability, outperforming traditional catalysts significantly.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Nanoscience & Nanotechnology
Zehao Zang, Xuewei Wang, Xiang Li, Qingling Zhao, Lanlan Li, Xiaojing Yang, Xiaofei Yu, Xinghua Zhang, Zunming Lu
Summary: This study presents a novel heterostructure catalyst Co9S8/Cu2S/CF with low overpotentials for water splitting. The strong interfacial interaction promotes water molecule dissociation, achieving efficient alkaline water splitting.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Review
Chemistry, Physical
Chongao Tian, Rui Liu, Yu Zhang, Wenxiu Yang, Bo Wang
Summary: Electrolytic water splitting is a feasible and promising technique for hydrogen energy production, but the slow kinetic rate of hydrogen/oxygen evolution reactions leads to high overpotential and low energy efficiency. Pt/Ir-based nanocatalysts have become the state-of-the-art catalysts, but their high cost and low earth abundance limit their applications. Ru-based nanomaterials, particularly Ru-doped functional porous materials, have attracted attention for their low price, Pt-like hydrogen bond strength, and high EWS activity. This review summarizes the design and preparation strategies of Ru-doped functional porous materials for EWS, as well as the structure-activity relationships induced by the tuned geometric/electronic structures. The challenges and perspectives of Ru-doped functional porous materials catalysts are also proposed.
Article
Engineering, Environmental
Haipeng Wang, Yan-ling Hu, Guang-Ling Song, Da-Jiang Zheng
Summary: By introducing both intrinsic and extrinsic dopants, p-n homojunctions were fabricated on hematite (alpha-Fe2O3), which greatly improved the photoelectrochemical water splitting performance. The p-n homojunctions enhanced the light absorption in the visible region and increased the carrier concentration, leading to improved separation efficiency of electron-hole pairs. The photoanode with p-n homojunctions exhibited high photocurrent density and low reaction onset potential, showing competitive performance and stability among all reported hematite photoanodes under the same conditions.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Lvlv Ji, Yujie Wei, Pingru Wu, Mingze Xu, Tao Wang, Sheng Wang, Qifeng Liang, Thomas J. Meyer, Zuofeng Chen
Summary: A novel frame-like nanostructured catalyst (Ni,Co)(2)P nanoframe was reported, showing optimized electronic structure for enhanced catalytic activity in both HER and OER, outperforming individual components like Ni2P and Co2P. Density functional theory calculations verified the strong electronic interaction between Ni2P and Co2P at the heterointerfaces, leading to enhanced HER electrocatalysis. The synthetic strategy has been generalized for the synthesis of Ni-Co dichalcogenide NFs, showing great promise for potential applications.
CHEMISTRY OF MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Huichao Wang, Yuquan Yang, Jiajia Liu, Hongjing Wu, Kaili Wu, Chaojie Lyu, Jiwen Wu, Woon-Ming Lau, Qi Wu, Jinlong Zheng
Summary: Electrocatalytic water splitting is an effective strategy to address the energy crisis and advance energy conversion. However, stable and efficient catalysts are still lacking. Transition metal compounds, particularly manganese-based compounds, have attracted attention as potential catalyst materials. This review summarizes the classification and modification methods of manganese-based catalysts, highlighting their performance improvement in electrocatalytic water splitting. The future development direction is also emphasized, along with the importance of advanced characterization methods.
MATERIALS TODAY PHYSICS
(2023)
Article
Chemistry, Physical
Yunpeng Wei, Wei Li, Dazhi Li, Lingya Yi, Weihua Hu
Summary: Efficient and sustainable Janus catalysts for water electrolysis are highly desirable. In this study, an active Janus electrocatalyst of amorphous-crystalline cobalt-molybdenum bimetallic phosphide heterostructured nanosheets on nickel foam was reported. It exhibited efficient catalytic activity for both hydrogen evolution reaction and oxygen evolution reaction in alkaline electrolyte, with long-term durability.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Review
Materials Science, Multidisciplinary
Linzhou Zhuang, Shiyi Li, Jiankun Li, Keyu Wang, Zeyu Guan, Chen Liang, Zhi Xu
Summary: Producing hydrogen from seawater is a promising alternative energy conversion technique, but it faces challenges such as competing reactions involving chlorine that can corrode the catalysts. However, researchers have made significant progress in developing efficient and robust electrocatalysts, providing guidance for designing effective catalysts.
Review
Chemistry, Multidisciplinary
Lei Guo, Xiaoxue Zhang, Li Gan, Lun Pan, Chengxiang Shi, Zhen-Feng Huang, Xiangwen Zhang, Ji-Jun Zou
Summary: This review presents recent advances in electrochemical oxidation of 5-hydroxymethylfural (HMF), ranging from reaction mechanism to reactor design. The systematic summary of the reaction mechanism and pathway, along with the emphasis on often overlooked parameters, provides a deeper understanding of HMF electrochemical oxidation. Comprehensive reviews of electrocatalysts for different products and introductions of reactors are also included. Prospective future efforts on exploring reaction mechanism, electrocatalysts, and reactor design are discussed. This review is expected to promote the economical and efficient electrochemical conversion of biomass for industrial applications.
Review
Chemistry, Multidisciplinary
Shishi Zhang, Xiaoxue Zhang, Chengguang Liu, Lun Pan, Chengxiang Shi, Xiangwen Zhang, Zhen-Feng Huang, Ji-Jun Zou
Summary: Ammonia (NH3) is commonly synthesized via the energy-intensive Haber-Bosch process, but electrocatalytic N-2 reduction to NH3 under ambient conditions offers a promising alternative. Metal-based materials, including single atoms, nanoclusters, and nanoparticles, have shown potential as electrocatalysts for nitrogen reduction reactions (NRR). Size plays a significant role in the catalytic properties of metal species due to their structure-reactivity correlations. This review summarizes theoretical and experimental studies on electrocatalytic N-2 fixation, highlighting the impact of metal size on the catalyst's geometry structure, chemical properties, and modulation strategies for optimized NRR performance.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Engineering, Electrical & Electronic
Yue Wang, Jiawei Jiang, Ji-Jun Zou, Wenbo Mi
Summary: This study successfully fabricated 200 μm single-crystal 2D MOFs and studied their electronic, magnetic, and catalytic properties using first-principles calculations. The results showed that different transition metal 2D MOFs have different properties, providing candidates for the study of spintronics and electrocatalysts.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Engineering, Environmental
Jiaxiang Zhang, Tianzuo Wang, Chengxiang Shi, Lun Pan, Xiangwen Zhang, Chong Peng, Ji-Jun Zou
Summary: An ammonium citrate assisted impregnation method was developed to fabricate loaded Ni catalyst for hydrogenation. The catalyst exhibits superior activity and high stability, making it suitable for hydrogenation of olefins and aromatics under low temperature conditions.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Multidisciplinary Sciences
Minhua Ai, Lun Pan, Chengxiang Shi, Zhen-Feng Huang, Xiangwen Zhang, Wenbo Mi, Ji-Jun Zou
Summary: The study finds that chiral structure in zinc oxide can induce spin selectivity effect to promote photocatalytic performance. By synthesizing zinc oxide crystals using chiral methionine molecules, hierarchical chirality is demonstrated, and it is shown that the chiral structure acts as spin filters and induces spin polarization in photoinduced carriers. The chiral zinc oxide exhibits significantly higher activities in photocatalytic O-2 production and contaminant photodegradation compared with achiral zinc oxide.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Likang Zhang, Yao Zhong, Jun Wang, Zheling Zeng, Shuguang Deng, Ji-Jun Zou, Qiang Deng
Summary: In this study, advanced intermetallic PdZn nanoparticle-supported catalysts were prepared for the tandem hydrogenative rearrangement of furan aldehydes/ketones into cyclopentanones. The catalysts exhibited high catalytic efficiency and generality for synthesizing various cyclopentanones with yields above 90%. Investigations into the catalytic mechanism revealed the involvement of an ionic water-mediated pathway in the heterolytic activation of H2, providing unconventional active sites for the reaction steps.
Article
Chemistry, Applied
Zexing He, Xiaokang Liu, Minghui Zhang, Lei Guo, Muhammad Ajmal, Lun Pan, Chengxiang Shi, Xiangwen Zhang, Zhen-Feng Huang, Ji-Jun Zou
Summary: This study focuses on developing better electrocatalysts for oxygen evolution reaction (OER) by combining the construction of ferromagnetic (FM) ordering channels and generation of highly active reconstructed species. The results show that the FM exchange-field interaction can penetrate electron transfer channels and activate oxyhydroxide layers, accelerating spin-selective electron transfer. This research provides a new guideline for developing highly efficient spintronic catalysts.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Review
Chemistry, Multidisciplinary
Zexing He, Muhammad Ajmal, Minghui Zhang, Xiaokang Liu, Zhen-Feng Huang, Chengxiang Shi, Ruijie Gao, Lun Pan, Xiangwen Zhang, Ji-Jun Zou
Summary: The development of efficient and economical electrocatalysts for the oxygen evolution reaction (OER) is crucial for renewable fuel production and energy storage systems. However, the slow kinetics of the OER hampers progress in these systems. Surface reconstruction offers potential to improve OER catalyst design, with anion modulation playing a crucial role in controlling surface reconstruction and enhancing catalytic performance. This review discusses the impact of anion modulation on surface reconstruction and its effects on water oxidation activity, as well as future directions for developing highly efficient catalysts.
Article
Nanoscience & Nanotechnology
Songbo Wang, Yidan Wang, Jia Li, Shuang Guo, Chengzhen Meng, Lun Pan, Ji-Jun Zou, Yawei Shi, Lei Zhang, Zhen Yin, Na Tang
Summary: This article reports the successful improvement of the performance of PEC water splitting photoanode through the synergy of electron modulation and heterojunction construction.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Physical
Liu Guo, Rui Li, Jiawei Jiang, Xueping Fan, Ji-Jun Zou, Wenbo Mi
Summary: CO2 reduction reactions (CO2RRs) are a promising strategy for effective capture and conversion of CO2. In this study, the electronic structure of TM-Mo2C catalysts and their performance in CO2 reduction were investigated. TM doping enhanced CO2 capture and activation abilities, while also promoting the adsorption of CHOH/CH2O. The results provide insights into the relationship between spin up/down anti-bonding states filling and the reaction rate of CHO conversion into CH2O.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Fan Liu, Ruijie Gao, Chengxiang Shi, Lun Pan, Zhen-Feng Huang, Xiangwen Zhang, Ji-Jun Zou
Summary: This study proposes a method to achieve a good balance between high activity and low Pt loading through constructing spatially correlated Pt-Mn pair sites. Experimental and theoretical calculations show that manipulating the intermetallic distance and charge distribution of Pt-Mn pairs can effectively promote O-O bond cleavage and improve *OH desorption at the Mn site, thereby avoiding Sabatier's limitation. The designed Pt-Mn/beta-MnO2 exhibits outstanding ORR activity and stability.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Energy & Fuels
Qing Liu, Tinghao Jia, Lun Pan, Zhouyang Shen, Zehao Han, Xiangwen Zhang, Ji-Jun Zou
Summary: This study investigated the pyrolysis performance of high-energy-density fuels with different cyclic structures and revealed the relationship between molecular structure and reactivity. The results showed that the pyrolysis conversion of the fuels is closely related to their carbon and hydrogen atom numbers, and the decomposition reaction pathways were proposed. Additionally, the heat sink of the fuels was correlated with the product of their carbon and hydrogen atom numbers. This study provides guidance for the design and development of high-energy-density fuels for high-performance aerospace vehicles with long flight distance and hypersonic speed.
Article
Engineering, Chemical
Yakun Liu, Shennan Yang, Chengxiang Shi, Lun Pan, Xiangwen Zhang, Jin-Jun Zou
Summary: A highly active solid acid catalyst for the cyclopropanation of dicyclopentadiene has been prepared by impregnation method. The catalyst shows good catalytic activity and recyclability, providing a green and efficient synthesis for high-energy-density fuel, pesticide and medicine.
CHEMICAL ENGINEERING SCIENCE
(2024)
Article
Energy & Fuels
Zehao Han, Lun Pan, Kang Xue, Jisheng Xu, Qing Liu, Ying Xu, Zhouyang Shen, Xiangwen Zhang, Ji-Jun Zou
Summary: This study investigates the effects of molecular structure on the dehydrogenation performance of polycyclic alkanes and finds that cyclohexane shows the best performance. Furthermore, the correlation between the density, volumetric net heat of combustion, and heat sink with the molecular structure of cyclic alkanes is analyzed.
Article
Chemistry, Multidisciplinary
Zhensheng Shen, Wei Wang, Lun Pan, Zhenfeng Huang, Xiangwen Zhang, Chengxiang Shi, Ji-Jun Zou
Summary: In this study, a new non-precious bimetallic catalyst was used for the hydrogenolysis of woody sawdust, demonstrating improved catalytic performance and selectivity. The direct observation of intermediates and the kinetic experimental studies provide insights into the mechanism of lignin hydrogenolysis, specifically the breakage of C-alpha-OH and C-beta-O bonds. This work not only presents an efficient catalyst but also contributes to the understanding and regulation of the lignin hydrogenolysis mechanism.
