Article
Chemistry, Physical
Lei Zhang, Qi Wang, Lulu Li, Mohammad Norouzi Banis, Junjie Li, Keegan Adair, Yipeng Sun, Ruying Li, Zhi-Jian Zhao, Meng Gu, Xueliang Sun
Summary: Utilizing atomic layer deposition, Co single atoms were successfully modified on Pt catalysts, showing higher activity and stability compared to commercial Pt/C catalysts in hydrogen evolution and oxygen reduction reactions. The atomic resolution TEM images and X-ray absorption spectroscopy confirm the formation of atomically dispersed Co on Pt, impacting the electronic structure and enhancing the catalytic performance for HER and ORR. This approach provides a new pathway for designing highly active and stable Pt-based catalysts for various catalytic reactions.
Review
Chemistry, Multidisciplinary
Chaitanya B. Hiragond, Niket S. Powar, Junho Lee, Su-Il In
Summary: Single-atom catalysts (SACs) have attracted attention for their suitability in various catalytic applications, particularly in photocatalytic CO2 reduction. The activity, selectivity, and stability of SACs depend on factors such as metal/support material, interaction between metal atoms and support, light-harvesting ability, and CO2 adsorption capacity. Understanding these factors is crucial for optimizing SACs in catalytic applications.
Review
Chemistry, Multidisciplinary
Shan Ren, Xi Cao, Zinan Jiang, Zijuan Yu, Tingting Zhang, Shaohui Wei, Qikui Fan, Jian Yang, Junjie Mao, Dingsheng Wang
Summary: The field of small molecule electro-activated conversion is an emerging area of catalytic research that aims to achieve a carbon-neutral future. The use of single-atom catalysts (SACs) is expected to greatly enhance the kinetics of electrocatalytic reactions by maximizing atomic efficiency and facilitating strong interactions between active sites and supports. In this feature article, the synthesis methodology for electrocatalysis and the strategies to stabilize single metal atoms in SACs are summarized. The electrochemical applications of SACs in various heterogeneous reactions are discussed, and the prospects and limitations of SACs for electrocatalysis are also presented.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Jingwen Zhou, Yuyang Liu, Dong-Rui Yang, Ling Liu, Xing-Hua Xia, Chungen Liu
Summary: Underpotential electrochemical deposition is a convenient approach for precisely controlling the fabrication process of single-atom catalysts (SACs). We report an integrated theoretical scheme for simulating the adsorption isotherm, which can enormously accelerate the evaluation of the adsorption energy for large model systems. Based on the study of nine metal/transition-metal dichalcogenide (TMD) systems, we demonstrate that the well-characterized potential-related metal-substrate and metal-metal interactions provide rational criteria for evaluating the stability of SACs against aggregation under electrochemical conditions.
Article
Chemistry, Physical
Jingwen Zhou, Yuyang Liu, Dong-Rui Yang, Ling Liu, Xing-Hua Xia, Chungen Liu
Summary: Underpotential electrochemical deposition is a convenient approach for controlling the fabrication process of single-atom catalysts. In this study, an integrated theoretical scheme is proposed for simulating the adsorption isotherm, which can accelerate the evaluation of the adsorption energy and accurately estimate the configurational effect. Using this simulation scheme, the surface map of the adsorption free energy is computed for atomically dispersed copper on 1T '-MoS2, and it is further utilized to estimate the equilibrium coverage, predict the feature of the adsorbate distribution pattern, and simulate the cyclic voltammogram.
Review
Chemistry, Multidisciplinary
Ziang Shang, Xueting Feng, Guanzhen Chen, Rong Qin, Yunhu Han
Summary: The conversion of carbon dioxide (CO2) into useful carbon products offers an efficient solution to the present energy crisis and environmental challenges. The development of single-atom catalysts (SACs) has been a focus of research on photocatalytic CO2 reduction due to their high atomic efficiency and superior catalytic activity. This review discusses the current research progress, challenges, and potential of SACs for photocatalytic CO2 reduction, as well as the principle behind photocatalytic carbon dioxide reduction. The effects of support materials and active site types in SACs on the performance of photocatalytic CO2 reduction are also compared and analyzed in this work. By sharing these developments, it is believed that inspiration for the rational design and development of stable and effective photocatalytic CO2 reduction catalysts based on SACs can be provided.
Article
Chemistry, Multidisciplinary
Xiang Chen, Shuhui Guan, Jianjiang Zhou, Hengjun Shang, Jingyuan Zhang, Fujian Lv, Han Yu, Hexing Li, Zhenfeng Bian
Summary: Single-atom catalysts (SACs) play a crucial role in catalysis research and have been extensively studied and applied. This study presents a simple approach for preparing SACs using a photocatalytic radical control strategy. The photogenerated radicals effectively inhibit the aggregation of metal atoms, leading to the successful stabilization of single atoms. The catalysts exhibit remarkable catalytic activity and stability, surpassing traditional catalysts.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Xin Zhou, Imgon Hwang, Ondrej Tomanec, Dominik Fehn, Anca Mazare, Radek Zboril, Karsten Meyer, Patrik Schmuki
Summary: Single atom catalysis has become a leading field in heterogeneous catalysis, electrocatalysis, and more recently in photocatalysis. A novel approach to trap and stabilize single atoms on a widely used photocatalyst platform has been introduced, showing higher photocatalytic activity compared to classic co-catalyst arrangements. Stably trapped single atoms provide the majority of photocatalytic reactivity, with high turnover frequencies despite being a small fraction of the initial load.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Zedong Zhang, Jiexin Zhu, Shenghua Chen, Wenming Sun, Dingsheng Wang
Summary: Downsizing the active center of the main group element gallium to the atomic level enables efficient CO2 reduction with high selectivity and stability.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Review
Chemistry, Physical
Xuemei Zhou
Summary: Titania (TiO2) has been widely investigated and used due to its functional applications. Noble metals are often used to enhance the catalytic activity of TiO2. Highly dispersed single metal atoms are desired for effective utilization of precious noble metals.
ACTA PHYSICO-CHIMICA SINICA
(2021)
Review
Chemistry, Physical
Javier Fonseca, Junling Lu
Summary: The article systematically introduces the application of atomic layer deposition technology in the synthesis of single-atom catalysts, explores the research on metal dimers prepared by ALD, describes the fundamental mechanism of ALD, and discusses the characteristics of catalysts.
Article
Engineering, Environmental
Eleonora Ponticorvo, Mariagrazia Iuliano, Claudia Cirillo, Maria Sarno
Summary: Efficient and selective electro-conversion of methane to C2 compounds (acetic acid and ethanol) at ambient temperature was achieved using enhanced catalysts with tunable electrocatalytic activities. Rh-based electrocatalyst showed high acetic acid production rate after only 40 minutes of reaction, while Cu-based catalyst achieved high selective ethanol production rate after 120 minutes of reaction. The catalysts remained stable for at least 120 minutes at 2 V and ambient temperature, and showed high efficiency and stability compared to literature results.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Chemistry, Multidisciplinary
Lianli Zou, Yong-Sheng Wei, Chun-Chao Hou, Caixia Li, Qiang Xu
Summary: This review summarizes the progress in the synthesis of MOF-derived SACs and their electrochemical applications. The synthetic approaches based on MOFs, characterization techniques for SACs, and their electrochemical applications including ORR, OER, HER, CO2RR, NRR, and other energy-related reactions are discussed. Insights into the current challenges and future prospects of this field are also briefly presented.
Article
Chemistry, Physical
Yun Yang, Shixi Liu, Gang Fu
Summary: The electrochemical CO2 reduction reaction (CO2RR) over transition metal and α-In2Se3 monolayer catalysts was investigated using density functional theory (DFT) and an effective screening medium method-reference interaction site model (ESM-RISM). Relationships between oxygen-bound intermediates with *O and carbon-bound intermediates with *CHO were constructed based on scaling relationships between the adsorption free energies of intermediates. The results indicate that *OCHO intermediates are more favorable for the first hydrogenation of CO2 on M@In2Se3 catalysts, and the adsorption energy of oxygen-bound species determines the catalytic performance of M@In2Se3. The Co@In2Se3 catalyst was predicted to be the most promising catalyst with a low limiting potential of -0.385 V, and the M@In2Se3 catalysts hold great potential for highly efficient CO2RR. This work provides a fundamental understanding for the rational design of ferroelectric single-atom catalysts for highly efficient electrocatalytic CO2 reduction.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Yue Wang, Shanshan Qin, Nikita Denisov, Hyesung Kim, Zdenek Bad'ura, Bidyut Bikash Sarma, Patrik Schmuki
Summary: In this study, it is demonstrated that reactive attachment of single atoms (SAs) by reductive anchoring is superior to the classical strong electrostatic adsorption (SEA) concept. The reactive deposition strategy enables the formation of highly active SA configurations on oxide semiconductor surfaces, such as TiO2, without the need for thermal post-deposition treatments. Compared to SAs deposited with SEA, reactive attachment leads to a significantly higher specific activity at lower Pt loading.
ADVANCED MATERIALS
(2023)
Article
Engineering, Environmental
Xinping Zhang, Yuxin Guo, Xiaoyang Liu, Shun-Yu Wu, Ya-Xuan Zhu, Shao-Zhe Wang, Qiu-Yi Duan, Ke-Fei Xu, Zi-Heng Li, Xiao-Yu Zhu, Guang-Yu Pan, Fu-Gen Wu
Summary: This study develops a nanotrigger HCFT for simultaneous photodynamic therapy and light-triggered ferroptosis therapy. The nanotrigger can relieve tumor hypoxia, induce enhanced photodynamic reaction, and facilitate the continuation of Fenton reaction, ultimately leading to lethal ferroptosis in tumor cells.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Olumide Bolarinwa Ayodele, Toyin Daniel Shittu, Olayinka S. Togunwa, Dan Yu, Zhen-Yu Tian
Summary: This study focused on the semihydrogenation of acetylene in an ethylene-rich stream using two alloyed Pt catalysts PtCu and PtCo. The PtCu catalyst showed higher activity and ethylene yield compared to PtCo due to its higher unoccupied Pt d-orbital density. This indicates that alloying Pt with Cu is more promising for industrial relevant SHA catalyst.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Guowei Chen, Wen-Cheng Chen, Yaozu Su, Ruicheng Wang, Jia-Ming Jin, Hui Liang, Bingxue Tan, Dehua Hu, Shaomin Ji, Hao-Li Zhang, Yanping Huo, Yuguang Ma
Summary: This study proposes an intramolecular dual-locking design for organic luminescent materials, achieving high luminescence efficiency and performance for deep-blue organic light-emitting diodes. The material also exhibits unique mechanochromic luminescence behavior and strong fatigue resistance.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Joren van Stee, Gregory Hermans, Jinu Joseph John, Koen Binnemans, Tom Van Gerven
Summary: This work presents a continuous solvent extraction method for the separation of cobalt and nickel in a millifluidic system using Cyphos IL 101 (C101) as the extractant. The optimal conditions for extraction performance and solvent properties were determined by investigating the effects of channel length, flow rate, and temperature. The performance of a developed manifold structure was compared to a single-channel system, and excellent separation results were achieved. The continuous separation process using the manifold structure resulted in high purity cobalt and nickel products.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Yan Xu, Jingai Jiang, Xinyi Lv, Hui Li, Dongliang Yang, Wenjun Wang, Yanling Hu, Longcai Liu, Xiaochen Dong, Yu Cai
Summary: A programmed gas release nanoparticle was developed to address the challenges in treating diabetic infected wounds. It effectively removes drug-resistant pathogens and remodels the wound microenvironment using NO and H2S. The nanoparticle can eliminate bacteria and promote wound healing through antibacterial and anti-inflammatory effects.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Tong Xia, Zhilin Xi, Lianquan Suo, Chen Wang
Summary: This study investigated a highly efficient coal dust suppressant with low initial viscosity and high adhesion-solidification properties. The results demonstrated that the dust suppressant formed a network of multiple hydrogen bonding cross-linking and achieved effective adhesion and solidification of coal dust through various chemical reactions.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Jinzhi Cai, Zhenshan Li
Summary: A density functional theory-based rate equation was developed to predict the gas-solid reaction kinetics of CaO carbonation with CO2 in calcium looping. The negative activation energy of CaO carbonation close to equilibrium was accurately predicted through experimental validation.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Jianxiong Chen, Fuhao Ren, Ningning Yin, Jie Mao
Summary: This study presents an economically efficient and easily implementable surface modification approach to enhance the high-temperature electrical insulation and energy storage performance of polymer dielectrics. The self-assembly of high-insulation-performance boron nitride nanosheets (BNNS) on the film surface through electrostatic interactions effectively impedes charge injection from electrodes while promoting charge dissipation and heat transfer.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Zijian Li, Zhaohui Yang, Shao Wang, Hongxia Luo, Zhimin Xue, Zhenghui Liu, Tiancheng Mu
Summary: This study reports a strategy for upgrading polyester plastics into value-added chemicals using electrocatalytic methods. By inducing the targeted transfer of *OH species, polyethylene terephthalate was successfully upgraded into potassium diformate with high purity. This work not only develops an excellent electrocatalyst, but also provides guidance for the design of medium entropy metal oxides.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Navneet Singh Shekhawat, Surendra Kumar Patra, Ashok Kumar Patra, Bamaprasad Bag
Summary: This study primarily focuses on developing a sulphur dyeing process at room temperature using bacterial Lysate, which is environmentally friendly, energy and cost effective, and sustainable. The process shows promising improvements in dye uptake and fastness properties.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Dengjia Shen, Hongyang Ma, Madani Khan, Benjamin S. Hsiao
Summary: This study developed cationic PVC nanofibrous membranes with high filtration and adsorption capability for the removal of bacteria and hexavalent chromium ions from wastewater. The membranes demonstrated remarkable performance in terms of filtration efficiency and maximum adsorption capacity. Additionally, modified nanofibrous membranes were produced using recycled materials and showed excellent retention rates in dynamic adsorption processes.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Xiaoyan Wang, Zhikun Wang, Ben Jia, Chunling Li, Shuangqing Sun, Songqing Hu
Summary: Inspired by photosystem II, self-supported Fe-doped NiCoP nanowire arrays modified with carboxylate were constructed to boost industrial-level overall water splitting by employing the concerted proton-coupled electron transfer mechanism. The introduction of Fe and carboxyl ligand led to improved catalytic activity for HER and OER, and NCFCP@NF exhibited long-term durability for overall water splitting.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Pengyao Yu, Ge Yang, Yongming Chai, Lubomira Tosheva, Chunzheng Wang, Heqing Jiang, Chenguang Liu, Hailing Guo
Summary: Thin LTA zeolite membranes were prepared through secondary growth of nano LTA seeds in a highly reactive gel, resulting in membranes with superior permeability and selectivity in gas separation applications.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Baiqin Zhou, Huiping Li, Ziyu Wang, Hui Huang, Yujun Wang, Ruichun Yang, Ranran Huo, Xiaoyan Xu, Ting Zhou, Xiaochen Dong
Summary: The use of machine learning to predict the performance of specific adsorbents in phosphate adsorption shows great promise in saving time and revealing underlying mechanisms. However, the small size of the dataset and insufficient detailed information limits the model training process and the accuracy of results. To address this, the study employs a fuzzing strategy that replaces detailed numeric information with descriptive text messages on the physiochemical properties of adsorbents. This strategy allows the recovery of discarded samples with limited information, leading to accurate prediction of adsorption amount, capacity, and kinetics. The study also finds that phosphate uptake by adsorbents is generally through physisorption, with some involvement of chemisorption. The framework established in this study provides a practical approach for quickly predicting phosphate adsorption performance in urgent scenarios, using easily accessible information.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Paula Alejandra Lamprea Pineda, Joren Bruneel, Kristof Demeestere, Lisa Deraedt, Tex Goetschalckx, Herman Van Langenhove, Christophe Walgraeve
Summary: This study evaluates the use of four esterified fatty acids and three vegetable oils as absorption liquids for hydrophobic VOCs. The experimental results show that isopropyl myristate is the most efficient liquid for absorbing the target VOCs.
CHEMICAL ENGINEERING JOURNAL
(2024)