Article
Energy & Fuels
Yong Chen, Yuanming Zhang, Wenjing Wang, Xiaoming Xu, Yang Li, Mengyang Du, Zhaosheng Li, Zhigang Zou
Summary: This study designs a photocatalyst with strong catalytic activity for CO2 reduction into CO under visible light irradiation by regulating the bandgap structure of nickel vanadate compounds. The higher concentration of oxygen vacancies further enhances the catalytic activity of the photocatalyst.
Article
Chemistry, Multidisciplinary
Pinki Devi, J. P. Singh
Summary: This study focuses on the photocatalytic reduction of CO2 to CH4 using In2O3-rGO nanocomposites with varying rGO content. The enhanced catalytic activity of In2O3-rGO nanocomposites compared to In2O3 nanostructures is attributed to the improved separation of photogenerated electron-hole pairs. The mechanism based on oxygen vacancies mediated charge transfer process explains the observed enhancement in the photocatalytic reduction of CO2.
JOURNAL OF CO2 UTILIZATION
(2021)
Article
Energy & Fuels
Junxiang Xiang, Tingshi Zhang, Ruodan Cao, Mingxiong Lin, Bixia Yang, Yonglin Wen, Zanyong Zhuang, Yan Yu
Summary: The concentration of oxygen vacancies directly affects the efficiency and selectivity of the NiO catalysts in the photocatalytic CO2 reduction reaction. Moderate oxygen vacancies enable strong CO2 binding and efficient charge transfer, while excessive vacancies reduce CO2 binding affinity and hinder charge mobility, leading to decreased performance in the reaction.
Article
Energy & Fuels
Adriana Blanco, Josefina Caroca, Rocio Tamayo, Marcos Flores, Manuel Romero-Saez, Rodrigo Espinoza-Gonzalez, Francisco Gracia
Summary: Nickel-doped CaTiO3 (Ni@CTO) perovskites prepared by sol-gel synthesis showed high catalytic activity and selectivity in the CO2 methanation reaction. The catalysts with particle sizes below 10 nm exhibited the highest activity. The doped catalysts exhibited activity at lower temperatures, possibly due to enhanced CO2 adsorption sites and higher specific surface area resulting from the formation of oxygen vacancies in the perovskite. The 10Ni@CTO catalyst demonstrated high stability over 40 hours of reaction.
Article
Materials Science, Multidisciplinary
Yidu Wang, Jingnan Ding, Jun Zhao, Jiajun Wang, Xiaopeng Han, Yida Deng, Wenbin Hu
Summary: Constructing nanohybrids with a synergistic effect using multi-components and specific micro/nanostructures can significantly enhance their electrocatalytic activity. In this study, an In2O3 superset of NC@GO nanohybrid was fabricated, and the synergistic effect of the multiple components in the material led to improved structural and electronic properties, resulting in efficient CO2 reduction reaction.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Bin Wang, Wei Zhang, Gaopeng Liu, Hailong Chen, Yu-Xiang Weng, Huaming Li, Paul K. Chu, Jiexiang Xia
Summary: This study reveals the important roles of oxygen vacancies and bimetallic oxyhalides structure in photocatalytic reactions through various experimental methods and theoretical calculations. The results indicate that the formation of excited Bi(3-x)+ sites can enhance the transfer efficiency of photogenerated electrons and reduce the energy barrier, thus improving the rate and efficiency of photocatalytic reactions.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Xiuan Xi, Jianwen Liu, Yun Fan, Lijuan Wang, Jun Li, Mingming Li, Jing-Li Luo, Xian-Zhu Fu
Summary: In this study, a promising cathode material with high activity and stability was developed by partially replacing Mo with Mg in the double perovskite structure. The newly developed material showed improved redox stability and CO2 electrolysis performance. Experimental results demonstrated that the electrolytic current of the new cathode material was almost double that of the original material, showcasing enhanced electrocatalytic performance.
Article
Chemistry, Physical
Danjun Mao, Shuxue Yang, Yuan Hu, Huan He, Shaogui Yang, Shourong Zheng, Cheng Sun, Zhifeng Jiang, Xiaolei Qu, Po Keung Wong
Summary: By fabricating freestanding ultrafine Bi5O7Br nanowires with abundant oxygen vacancies, this study successfully optimized the critical processes of CO2 photocatalysis and improved the reaction efficiency. The findings may inspire the future design of ultrafine catalysts for artificial photosynthesis.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2023)
Article
Chemistry, Inorganic & Nuclear
Baoxing Ning, Miaomiao Liu, Yanjie Hu, Hao Jiang, Chunzhong Li
Summary: By engineering oxygen vacancies, highly dispersed SnO2 nanoparticle electrocatalysts with ultrahigh O-v content were synthesized. These electrocatalysts exhibited remarkable catalytic activity and reaction kinetics for the electroconversion of CO2 into formate.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Multidisciplinary
Changfa Guo, De-Li Chen, Yong Hu
Summary: This paper introduces the use of defect engineering to improve semiconductor heterojunctions in photocatalytic CO2 reduction. The effects of various anion vacancies at different positions on the photocatalytic CO2 reduction are discussed, and challenges in constructing and characterizing defective heterojunctions and solutions to enhance their activity and selectivity are proposed.
Article
Chemistry, Multidisciplinary
Yang Wu, Dongpo He, Lei Li, Zhiqiang Wang, Wensheng Yan, Junfa Zhu, Yang Pan, Qingxia Chen, Xingchen Jiao, Yi Xie
Summary: This study investigates the influence of defects on the three main processes during CO2 photoreduction using two-dimensional materials. The presence of oxygen defects is found to expand photoabsorption, accelerate carrier separation, and enhance CO2 adsorption and protonation, thereby improving CO2 photoreduction performance.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Shao-Qiang Li, Ying Liu, Yi-Lei Li, Ying-Juan Hao, Rui-Hong Liu, Lan-Ju Chen, Fa-Tang Li
Summary: Adding amorphous components to Al2O3 elongates the Al-O bond and creates oxygen vacancies, turning Al2O3 into an independent photocatalyst for CO2 adsorption and reduction. The CO generation rate can reach 36.5 mu mol g(-1) h(-1), which is 6.5 times higher than that of P25 TiO2.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Shijia Li, Chuqian Xiao, Rongzhen Chen, Mengyi Wang, Yuting Ma, Kaiwen Luo, Muyao Shen, Yihua Zhu, Yuhang Li, Chunzhong Li
Summary: In this study, Cu-dispersed oxide octahedral molecular sieve (Cu(x)-OMS-1) was used as a catalyst for electrochemical nitrate reduction reaction (NITRR). The introduction of copper optimized the adsorption capabilities of the intermediates in NITRR and inhibited competitive hydrogen evolution reaction (HER) at high current density. The study revealed that copper effectively promoted nitrate protonation during NITRR, resulting in a high current density and Faraday efficiency for nitrate reduction to ammonia.
Article
Engineering, Environmental
Danjun Mao, Yuan Hu, Shuxue Yang, Jianli Liang, Huan He, Shaogui Yang, Zhaoyi Xu, Cheng Sun, Shourong Zheng, Zhifeng Jiang, Xiaolei Qu, Chun-Sing Lee
Summary: Freestanding ultrathin Bi4O5Br2 nanotubes with abundant oxygen vacancies were fabricated to optimize photoabsorption, multi-electrons transfer, and CO2 activation barrier, resulting in an outstanding CO production rate.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Lianpeng Song, Zhong Liang, Mingzi Sun, Bolong Huang, Yaping Du
Summary: This study successfully synthesized CeO2/Bi3NbO7 fibrous tubular structure through constructing an interface, which exhibited high selectivity and durability in the CO2RR. Theoretical calculations showed that the interface modulated the electroactive regions, improving the adsorption of key adsorbates and reducing the reaction energy barriers, resulting in increased selectivity and yield of HCOOH.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Tingshi Zhang, Chengkai Yang, Borong Li, Yuanming Zhang, Zanyong Zhuang, Yan Yu
Summary: Preparation of high-density and atomically-dispersed clusters is critical for designing high-efficient catalysts. This study proposes a novel non-equilibrium growth model to achieve sub-2 nm CuO clusters with high density and uniform orientation. These clusters are atomically scattered on an ultrathin AlOOH substrate driven by lattice matching. The catalytic activity of these CuO clusters is extremely efficient, surpassing commercial Pd/C catalysts and state-of-the-art noble-metal catalysts, and is attributed to abundant interfacial oxygen vacancies.
Article
Materials Science, Multidisciplinary
Mingxiong Lin, Weishan Jiang, Chengkai Yang, Zanyong Zhuang, Yan Yu
Summary: The study reports a robust photoreversible color switching system, where lattice matching enables bottom-up oriented assembly between MOFs and INCs. The TiO2/PB paper derived from this system is considered one of the best light-printing papers in literature, with high resolution and the ability to be repeatedly written for over 100 times.
SCIENCE CHINA-MATERIALS
(2022)
Article
Chemistry, Physical
Mingxiong Lin, Ruodan Cao, Yifei Luo, Tingshi Zhang, Zanyong Zhuang, Yan Yu
Summary: This study presents a heterostructured catalyst based on metal-organic frameworks (MOFs) for CO2 reduction reaction (CRR), which exhibits high CO2 evolution rate and CO selectivity. The findings highlight the versatility and mechanistic response of MOFs in constructing advanced catalysts.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Tingshi Zhang, Yanting Zheng, Xin Zhao, Mingxiong Lin, Bixia Yang, Jiawei Yan, Zanyong Zhuang, Yan Yu
Summary: In this study, a scalable synthesis method for holey, single-crystal 2D transition metal oxides (TMOs) nanomesh with in-plane nanosized pores was developed. The as-synthesized Co/NiO-2 nanomesh showed superior photocatalytic CO2-syngas conversion efficiency compared to NiO and Co/NiO-1 nanomesh. The enhanced performance of Co/NiO-2 nanomesh was attributed to the defect structures at the edge sites of nanopores and its single-crystal structure. Theoretical calculation suggested that the lattice distortion induced by Co dopant led to a decrease in the dehydration energy of the hydroxide precursor.
Article
Materials Science, Multidisciplinary
Yonglin Wen, Lairan He, Hu Li, Yunhui Han, Yiming Zhang, Zanyong Zhuang, Yan Yu
Summary: Through experimental and theoretical studies, it was found that the amorphous Zr-doped manganese oxide (amor-Zr:MnOx) catalysts carrying dual lattice oxygens can meet the requirements of both active oxygen and structural stability in catalytic reactions. In the aerobic oxidation of 5-(hydroxymethyl)furfural (HMF), the amor-Zr0.2MnOx catalyst showed 99% selectivity for 2,5-furandicarboxylic acid (FDCA) and a high FDCA formation rate of 3600 μmol(FDCA) g(cat)(-1) h(-1), surpassing most Mn-based and related TMO-based catalysts. This research is of great significance for catalyst design and oxidation reactions.
SCIENCE CHINA-MATERIALS
(2023)
Article
Chemistry, Physical
Yalin Yang, Zheyan Chen, Hanlin Huang, Yuxin Liu, Junhua Zou, Shuqi Shen, Jiawei Yan, Jinshui Zhang, Zanyong Zhuang, Zhongzhen Luo, Chengkai Yang, Yan Yu, Zhigang Zou
Summary: This study reveals that Cs3Bi2Br9 in the Cs3Bi2Br9/CdS heterojunction not only participates in light-driven processes, but also plays a significant role in the activation and conversion of key intermediates during C(sp3)-H bond transformation. Moreover, various aromatic hydrocarbons can be effectively photocatalytically converted to corresponding aldehydes/ketones as major products. This work highlights the importance of surface catalysis mechanisms in photocatalysis for both halide perovskites and other semiconductors.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Haibing Liu, Kaihang Chen, Ya-Nan Feng, Zanyong Zhuang, Fei-Fei Chen, Yan Yu
Summary: An S-scheme nanoparticle heterojunction of Co3O4-TiO2/C has been designed to enhance CO2 adsorption and accelerate interfacial electron transfer, thereby boosting photocatalytic CO2 reduction.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Materials Science, Multidisciplinary
Tingshi Zhang, Xin Zhao, Mingxiong Lin, Bixia Yang, Jiawei Yan, Zanyong Zhuang, Yan Yu
Summary: Ordered assembly of 1D and 2D nanomaterials through oriented attachment mechanism enables the formation of ordered 1D/2D NiZn layered double hydroxide (Ni-Zn LDH) heterostructures, exhibiting superior CO2 photoreduction performance.
SCIENCE CHINA-MATERIALS
(2023)
Article
Chemistry, Physical
Haibing Liu, Kaihang Chen, Ya-Nan Feng, Zanyong Zhuang, Fei-Fei Chen, Yan Yu
Summary: An S-scheme nanoparticle heterojunction of Co3O4-TiO2/C has been designed to enhance CO2 adsorption and accelerate interfacial electron transfer, thereby boosting photocatalytic CO2 reduction. The in situ confined growth of the nanoparticle heterojunction enables good particle dispersion and a small particle size, which makes the surface and active sites highly exposed and accessible for CO2 molecules. The Co3O4-TiO2/C nanoparticle heterojunction exhibits a higher specific surface area, larger CO2 adsorption capacity, and faster charge transfer compared to pure Co3O4 and TiO2/C, resulting in a significantly higher gas generation rate and remarkable turnover number of the photocatalysis.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Nanoscience & Nanotechnology
Mingxiong Lin, Weishan Jiang, Tingshi Zhang, Bixia Yang, Zanyong Zhuang, Yan Yu
Summary: Herein, the design of a joint MOF heterostructure consisting of orderly assembled Co-II- and Co-III-based Prussian blue analogs (PBAs) driven by their spontaneous lattice match in the growth process is reported. The as-prepared H/Co-III-PBA@Co-II-PBA cage is a mesocrystal and exhibits superior photocatalytic syngas production activity, which is among the best state-of-the-art heterogeneous photocatalysts in the literature. The built-in electric field in the Co-III-PBA@Co-II-PBA heterojunction can direct the fast transport of photocogenerated electrons from Co-II-PBA to the active Co-III-PBA.
Review
Green & Sustainable Science & Technology
Ting Shi Zhang, Bi Xia Yang, Ming Xiong Lin, Zan Yong Zhuang, Yan Yu
Summary: Precise synthesis of high-quality, sophisticated heterostructures by ordered assembly of small nanomaterials is crucial for developing advanced materials with elaborate functionalities and enhanced stabilities to mitigate the energy and environment crisis.
ADVANCED ENERGY AND SUSTAINABILITY RESEARCH
(2023)
Article
Nanoscience & Nanotechnology
Mingxiong Lin, Yifei Luo, Tingshi Zhang, Xiaoxin Shen, Zanyong Zhuang, Yan Yu
Summary: This work reveals the trade-off effect of two metal sites with distinct functionalities in CO2 reduction. The findings can contribute to the design of bimetallic MOF catalysts that mimic naturally occurring bimetallic catalysts.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Review
Chemistry, Physical
Yonglin Wen, Jiawei Yan, Bixia Yang, Zanyong Zhuang, Yan Yu
Summary: This paper highlights the importance of tailoring reactive oxygen species (ROS) in advanced oxidation processes (AOPs) and summarizes methods and precursors to generate specific ROS. The application of ROS in pollutant degradation and the synthesis of value-added chemicals is discussed, with a focus on transition metal catalysts developed with defect engineering for AOPs. The paper concludes with an outlook on the challenges and future perspectives of applying ROS in AOPs.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Multidisciplinary
Guoxin Zhuang, Bixia Yang, Weishan Jiang, Xinwen Ou, Lin Zhao, Yonglin Wen, Zanyong Zhuang, Zhang Lin, Yan Yu
Summary: The ensemble effect of catalytically active sites is found to promote CO2 reduction reaction (CRR) while suppressing hydrogen evolution reactions (HERs). A 2D/2D hybrid composed of nickel-rich Ni-Mn layered double hydroxide (LDH) nanosheets (NSs) and oxygen vacancies (OVs)-rich Mn3O4 (OVs-Mn3O4) NSs achieves high CRR selectivity and efficiency by activating CO2 and promoting light harvesting and charge transport.
CELL REPORTS PHYSICAL SCIENCE
(2022)