Article
Engineering, Environmental
Wanli Liang, Mengyan Zhou, Xiulan Li, Lijie Zhu, Zhixin Li, Yifan Zhou, Jian Chen, Fangyan Xie, Hao-Fan Wang, Nan Wang, Yanshuo Jin, Hui Meng
Summary: Hydrogen energy is the most suitable solution for long-term, large-scale energy storage. The design of efficient, economical, and stable electrocatalysts for hydrogen oxidation reaction (HOR) and hydrogen evolution reaction (HER) is crucial for its commercial development. In this study, a Ni nanocluster supported on oxygen-vacancy-rich MoO2 (Ni/MoO2_x) is designed and it shows excellent hydrogen electrocatalytic activity.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Chemistry, Multidisciplinary
Zhen Zhang, Peizhi Liu, Yanhui Song, Ying Hou, Bingshe Xu, Ting Liao, Haixia Zhang, Junjie Guo, Ziqi Sun
Summary: This review summarizes the recent progress of 2D superlattice materials in electrocatalysis applications, focusing on the rational design and fabrication of 2D superlattices, as well as their specific applications in electrocatalysis. The challenges and strategies for the future design of 2D superlattice materials are also outlined.
Article
Chemistry, Physical
Ebrahim Sadeghi, Sanaz Chamani, Emre Erdem, Naeimeh Sadat Peighambardoust, Umut Aydemir
Summary: This article presents a high-performance and durable heterostructure of NiMo/CoMoO4 for the alkaline HER, which was constructed via a two-pot in situ growth strategy on a nickel foam. The hybrid catalyst exhibited significantly increased active sites density and surface area compared to pristine CoMoO4. The heterostructure, composed of metallic NiMo and oxygen vacancy-confined CoMoO4, facilitated H and OH adsorption, resulting in low overpotential and high turnover frequency.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Jiageng Zheng, Aoni Xu, Angjian Wu, Xiaodong Li
Summary: Hollow-like Co2N nanoarrays surface-engineered by argon plasma demonstrate exceptional catalytic performance for the hydrogen evolution reaction. The rational coordination environment of Co, tuned by argon plasma engraving, enhances the HER activity significantly. This study proposes a new perspective on conducting catalyst surface modification engineering via plasma engraving.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Wenbin Wang, Chen Liu, Haiyan Li, Dongbin Dang, Yan Bai
Summary: In this study, a photocatalyst with excellent H2 production activity in an alkaline environment was successfully synthesized. The hydrogen production performance of the optimal sample reached 5394.17 mmol g-1 under highly alkaline conditions. The superior H2 evolution activity is mainly attributed to the p-n heterojunction creating an internal-built electric field on the interface of the two semiconductors, enabling effective spatial separation of electron-hole pairs.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Qing Qin, Haeseong Jang, Xiaoli Jiang, Liu Wang, Xuefeng Wang, Min Gyu Kim, Shangguo Liu, Xien Liu, Jaephil Cho
Summary: This study investigates the electrocatalytic performance of Ru/ac-CeO2-delta catalyst for alkaline hydrogen evolution reaction (HER). The results show that the catalyst achieves optimum performance in the energy level of water dissociation, hydrogen and hydroxide desorption, thereby enhancing the reaction kinetics. The study also reveals the crucial role of oxygen vacancy and Ru Lewis acid-base pairs in catalyzing the reaction.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Feifei Dong, Lu Li, Ziqi Kong, Xiaomin Xu, Yaping Zhang, Zhenghui Gao, Biaokui Dongyang, Meng Ni, Quanbing Liu, Zhan Lin
Summary: The study investigates the performance of nickel-substituted perovskite Ba0.5Sr0.5Co0.8Fe0.2NixO3-δ as an OER catalyst, with BSCFN20 showing the best OER activity with low overpotential and Tafel slope. In water splitting experiments, using BSCFN20 as the anode and Pt/C as the cathode can achieve 50 mA cm(-2) with a low voltage, and BSCFN20||Pt/C remains stable for a long period, surpassing the state-of-the-art RuO2||Pt/C counterpart.
Article
Chemistry, Physical
Anil Ashok Kashale, Akash Sanjay Rasal, Fei-Chien Hsu, ChangChun Chen, Sayali Nitin Kulkarni, Chun Hao Chang, Jia-Yaw Chang, Yuekun Lai, I. -Wen Peter Chen
Summary: The sluggish oxygen evolution reaction in water electrolysis hinders the efficient hydrogen generation, leading to the exploration of hydrazine-assisted water electrolysis. In this study, oxygen-deficient zinc-doped nickel cobalt oxide alloy nanoarrays were prepared on a stainless steel mesh, which exhibited low potential and excellent hydrazine oxidation activity.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Chuansheng He, Xiaochen Hu, Jia Wang, Lingzheng Bu, Changhong Zhan, Bingyan Xu, Leigang Li, Yunchao Li, Xiaoqing Huang
Summary: In this study, mesoporous Mo-x-Co-O hybrid nanosheets with abundant holes were successfully synthesized using a solvothermal route. These nanosheets exhibited excellent catalytic activity for the oxygen evolution reaction and the dimension and defects of the nanosheets could be controlled by adjusting the molar ratio. The enhanced adsorption of intermediates and oxygen vacancies were the main factors contributing to the excellent catalytic activity of the Mo-0.2-Co-O nanosheets.
SCIENCE CHINA-MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Boyan Liu, Xin Wang, Yingjuan Zhang, Liangcheng Xu, Tingsheng Wang, Xiong Xiao, Songcan Wang, Lianzhou Wang, Wei Huang
Summary: To address the sluggish oxygen evolution kinetics of bismuth vanadate (BiVO4) photoanodes, a vanadium oxide (VOx) with enriched oxygen vacancies was grown on BiVO4 photoanodes using a photo-assisted electrodeposition process. The optimized BiVO4/VOx photoanode showed a significantly enhanced photocurrent density of 6.29 mA cm(-2) at 1.23 V, which was 385% higher compared to the pristine counterpart. The presence of oxygen vacancies in VOx improved the adsorption of water molecules and promoted charge transfer during the oxygen evolution reaction, resulting in excellent photoelectrochemical (PEC) water splitting performance.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Pandiyarajan Anand, Dhayanantha Prabu Jaihindh, Wen-Ku Chang, Yen-Pei Fu
Summary: This study focused on the synthesis of Ca-doped narrow bandgap BiFeO3 perovskite via a simple auto combustion method, demonstrating its excellent performance in oxygen evolution reactions (OER) and wastewater treatment. By doping Ca2+ into the structure, oxygen vacancies were created and the valence state of Fe3+ was modified. The material showed promising results in the photocatalytic reduction of Cr(VI) and exhibited enhanced electrochemical OER activities in both acidic and alkaline conditions.
APPLIED SURFACE SCIENCE
(2021)
Review
Chemistry, Multidisciplinary
Chao-Peng Wang, Yu-Xuan Lin, Lei Cui, Jian Zhu, Xian-He Bu
Summary: This review summarizes the recent advances of pristine 2D MOF-based electrocatalysts for water electrolysis, focusing on the detailed analysis of their intrinsic electrocatalytic properties and the important roles of inherent MOF active centers or other in-situ generated active phases. The challenges and development prospects of pristine 2D MOFs for future applications in overall water splitting are also discussed.
Review
Chemistry, Multidisciplinary
Yanhui Song, Bingshe Xu, Ting Liao, Junjie Guo, Yucheng Wu, Ziqi Sun
Summary: This Review examines the latest advances in 2D metal (hydr)oxide nanosheets in electrocatalysis, discussing the relationship between electronic structure and catalytic properties, and proposing a series of strategies for enhancing electrocatalysis performance through electronic structure tuning. Perspectives on current challenges and future trends for designing 2D metal (hydr)oxide electrocatalysts with significant catalytic activity are outlined.
Article
Chemistry, Multidisciplinary
Qinke Wu, Yuting Luo, Ruikuan Xie, Huiyu Nong, Zhengyang Cai, Lei Tang, Junyang Tan, Simin Feng, Shilong Zhao, Qiangmin Yu, Junhao Lin, Guoliang Chai, Bilu Liu
Summary: This study presents a new strategy for the in situ growth of large numbers of 2D heterostructures on centimeter-scale substrates. The resulting heterostructures show improved hydrogen evolution reaction (HER) performance.
Article
Chemistry, Multidisciplinary
Xiwen Yu, Bing Wang, Cheng Wang, Chen Zhuang, Yingfang Yao, Zhaosheng Li, Congping Wu, Jianyong Feng, Zhigang Zou
Summary: High-entropy materials (HEMs) with unique configuration and physicochemical properties have attracted intensive research interest. In this study, a series of 2D high-entropy hydrotalcites (HEHs) were created by coprecipitation method, showing significantly decreased activation energy compared to low-entropy hydrotalcites (LEHs) for the oxygen evolution reaction (OER) electrocatalysts. This work opens up a new avenue for the development of 2D HEMs and presents a promising platform for exploring the unknown properties of HEMs.
Article
Engineering, Environmental
Yilong Hua, Donghan Li, Jinglan Zou, Wei Wang, Xiaoyan Wu, Xiaowen Zhang, Qing Liu, Guodong Zhao, Mi Li, Wei-xian Zhang, Jianping Yang
Summary: Uranium is a carbon dioxide free nuclear energy, but uranium-contained wastewater has negative health effects on humans. Nanoscale zero-valent iron (nZVI) has the ability to separate uranium from wastewater with high efficiency. The study investigates the transformation mechanisms of nZVI and its effect on uranium binding. The findings can help improve the remediation of uranium-contained wastewater using nZVI technology.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Ziyang Wu, Ting Liao, Sen Wang, Wei Li, Binodhya Wijerathne, Wanping Hu, Anthony P. O'Mullane, Yuantong Gu, Ziqi Sun
Summary: In this study, Fe-doped MFe-LDHs (M = Co, Ni, Cu, Mn) were synthesized to investigate the influence of Fe on their electrocatalytic activity for the oxygen evolution reaction (OER). It was found that the Fe content had a significant impact on the catalytic performance, with an optimal Fe content resulting in the highest OER activity. Excess Fe, however, compromised the activity. Additionally, a volcano relationship was observed between the intermediate adsorption and Fe content, and intermediate adsorption capacitance was identified as a new activity descriptor for electrocatalysts.
MATERIALS HORIZONS
(2023)
Article
Chemistry, Multidisciplinary
Weizhen Meng, Xiaoming Zhang, Ying Liu, Xuefang Dai, Guodong Liu, Yuantong Gu, E. P. Kenny, Liangzhi Kou
Summary: Topological materials with surface metallic states and high carrier mobility have been considered as ideal catalysts for heterogeneous reactions. The relationship between their catalytic performance and topological states is still under debate. Through studies on the hydrogen evolution process under different doping and strain conditions, it has been demonstrated that the excellent catalytic performance indeed originates from the topological properties. A linear relationship between the length of Fermi arcs and Gibbs free energy (Delta G(H*)) has been found, providing direct evidence linking enhanced catalytic performance and surface Fermi arc states, and clarifying the fundamental mechanism in topological catalysis.
Article
Agricultural Engineering
Chanaka P. Batuwatta-Gamage, Charith Rathnayaka, Helambage C. P. Karunasena, Hyogu Jeong, Azharul Karim, Yuan Tong Gu
Summary: This study investigates the feasibility of using Physics-Informed Neural Networks with Automatic Differentiation to predict mass transfer and moisture variations during food drying. The proposed approach, called PINN-MT, incorporates convective mass transfer equation and Fick's law of diffusion into the loss function. Adaptive Activation and Transfer Learning are used to improve computational efficiency and prediction accuracy.
BIOSYSTEMS ENGINEERING
(2023)
Review
Materials Science, Multidisciplinary
Fangzhou Zhang, Jun Chen, Gordon G. Wallace, Jianping Yang
Summary: Recently, there has been a significant increase in demand for high-efficiency electrocatalysts for advanced energy conversion systems. One-dimensional fiber materials are considered promising electrode materials due to their excellent mechanical strength, large surface area, high electrical conductivity, compositional/morphological tunability, and structural stability. This article provides a detailed description of the design and synthesis of fiber-based electrocatalysts, including supportive fibers for catalyst loading and electrocatalytic fibers containing intrinsic active sites. The precise control of these architectures for specific electrocatalytic reactions and the future challenges and research directions of fiber materials for real-world energy conversion applications are discussed.
PROGRESS IN MATERIALS SCIENCE
(2023)
Article
Chemistry, Physical
Juan Bai, Jun Mei, Jing Shang, Xin Mao, Dongchen Qi, Ting Liao, Aijun Du, Ziqi Sun
Summary: It is well known that the activity of electrocatalytic oxygen evolution reaction (OER) depends on the active centers of electrocatalysts. In this study, molybdenum oxide catalysts were used as a representative model and it was found that the inactive molybdenum sites can be regenerated as synergistic active centers for promoting OER through phosphorus-modulated defective engineering. The optimal catalyst achieved an overpotential of 287 mV for a current density of 10 mA cm(-2) with only 2% performance decay after 50 hours of continuous operation. This work provides insights into activating inert metal sites on oxide catalysts to enhance their electrocatalytic properties.
Article
Materials Science, Multidisciplinary
Roman Gulyaev, Oleg Semyonov, Georgy V. Mamontov, Alexey A. Ivanov, Daniil M. Ivanov, Minjun Kim, Vaclav Svorcik, Giuseppe Resnati, Ting Liao, Ziqi Sun, Yusuke Yamauchi, Pavel S. Postnikov, Olga Guselnikova
Summary: This study develops a novel approach to introduce halogen bonding elements into UiO-66 to fine-tune the adsorption properties towards chlorobenzenes. The highest adsorption capacity was achieved in UiO-66 loaded with 50% I-TA (UiO-66-Iopt) due to the balance between the number of halogen bonding elements and the surface area of UiO-66 structure. The formation of halogen bonding was experimentally verified and PET@UiO-66-Iopt showed excellent selectivity for the separation of chlorobenzenes.
ACS MATERIALS LETTERS
(2023)
Article
Engineering, Multidisciplinary
Jinshuai Bai, Gui-Rong Liu, Ashish Gupta, Laith Alzubaidi, Xi-Qiao Feng, YuanTong Gu
Summary: Our study reveals that physics-informed neural networks (PINN) are often local approximators after training. This led to the development of a novel physics-informed radial basis network (PIRBN), which maintains the local approximating property throughout the training process. Unlike deep neural networks, PIRBN consists of only one hidden layer and a radial basis activation function. Under appropriate conditions, we demonstrated that PIRBNs can converge to Gaussian processes using gradient descent methods. Furthermore, we investigated the training dynamics of PIRBN using the neural tangent kernel (NTK) theory and explored various initialization strategies. Numerical examples showed that PIRBN is more effective than PINN in solving nonlinear partial differential equations with high-frequency features and ill-posed computational domains. Moreover, existing PINN numerical techniques such as adaptive learning, decomposition, and different loss functions can be applied to PIRBN. The reproducible code for all numerical results is available at https://github.com/JinshuaiBai/PIRBN.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2023)
Article
Chemistry, Physical
Juan Bai, Jun Mei, Dongchen Qi, Ting Liao, Ziqi Sun
Summary: For electrocatalytic oxygen evolution reactions (OERs), optimizing the surface microenvironment of nanocatalysts is crucial for enhancing catalytic performance. In this study, molybdenum oxides were used as representative catalysts and boron/nitrogen species were employed as modulators to improve OER activities. It was found that the boron modulator induced the formation of MoO2 phase, while the nitrogen modulator stabilized MoO3 phase. The boron modulator showed better OER performance with a lower overpotential of 298 mV compared to the nitrogen modulator (310 mV) at a current density of 10 mA cm(-2), without significant performance decay for 50 hours. This work provides insights into OLSME engineering and offers possibilities for enhancing activities of inactive metal oxide electrocatalysts.
Article
Materials Science, Multidisciplinary
Hashara Kandambige, Juan Bai, Jun Mei, Dongchen Qi, Ting Liao, Ziqi Sun
Summary: The loading of active noble-metal nanoparticles onto two-dimensional metal oxide supporters can improve catalytic performance through stable interfacial binding and reduced charge transfer distance. This study proposes a controllable self-assembly approach for synthesizing three types of 2D vanadium oxide supporters. The experimental results show that the 2D geometry has the optimal effect on catalytic kinetics, mainly due to the strongest Ir-V-O interaction at the particle-support interfaces. This work provides new insights into particle-support interaction mechanisms and offers a possible solution for optimizing electrocatalytic kinetics by adjusting the geometry of the supporter.
ACS MATERIALS LETTERS
(2023)
Article
Chemistry, Inorganic & Nuclear
Hongxia Luo, Chuqi Wang, Jiaqiao Wang, Yuanyuan Ma, Jianping Yang
Summary: A series of self-supported Fe/support catalysts were synthesized through a simple hydrothermal and in situ thermal reduction strategy, showing strong metal-support interaction (SMSI). Notably, the iron nanoparticles loaded on graphite felt (Fe/GF) exhibited the optimal electrochemical NO3RR performance with NO3- conversion of 67.7% and N-2 selectivity of 96.6%, attributed to the enhanced dispersity and conductivity. This study not only provides a universal method for SMSI composite catalysts but also lays the foundation for their large-scale application.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Physical
Li Wang, Shan Jiang, Wenke Gui, Haoze Li, Jing Wu, Huaping Wang, Jianping Yang
Summary: Plastics are widely used in daily life due to their low cost, portability, durability, and processability, but accumulated discarded plastics pose a threat to the environment. Photocatalysis offers a promising green method for converting plastic waste into valuable products. This article discusses the advantages of photocatalysis compared to other catalysis technologies and clarifies the potential upcycling paths for plastic waste. Emphasis is placed on the types of plastic waste that can be upcycled, the integration between plastic waste and photocatalysts, and modulation of product selectivity. Challenges and insights for the future development of photocatalytic plastic waste upcycling are also presented.
