Article
Materials Science, Multidisciplinary
Y. Nirmal Rajeev, C. Maria Magdalane, G. Ramalingam, L. Bhushan Kumar, Norah Alwadai, M. S. Al-Buriahi
Summary: A solvothermal method was utilized to synthesize CTAB templated TiO2 nanoparticles, which were characterized using various techniques. Photocatalytic studies demonstrated that CTAB-assisted TiO2 nanoparticles exhibited higher efficiency in degrading Congo red dye, indicating stability and reusability for practical applications.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Chemistry, Multidisciplinary
Pu Zhang, Xiaoyu Sui, Ying Wang, Zhuan Wang, Jiwu Zhao, Na Wen, Hailong Chen, Haowei Huang, Zizhong Zhang, Rusheng Yuan, Zhengxin Ding, Wenxin Dai, Xianzhi Fu, Yu-Xiang Weng, Jinlin Long
Summary: A series of novel surface Ru-H bipyridine complexes-grafted TiO2 nanohybrids were prepared for CO2 photocatalytic conversion to CH4 using H2 as electron and proton donors. The selectivity towards CH4 was significantly increased by ligand exchange with the surface Cp-RuH complex, resulting in a 4.4-fold enhancement in CO2 methanation activity. The optimal photocatalyst achieved an impressive CH4 production rate of 241.2 μL•g-1•h-1. Femtosecond transient IR absorption results showed the rapid injection of hot electrons into the conduction band of TiO2 nanoparticles, forming a charge-separated state responsible for CO2 methanation. The formation of CO2•- radicals through single electron reduction of CO2 molecules adsorbed on surface oxygen vacancies of TiO2 nanoparticles was identified as the critical step for the methanation, followed by insertion of radical intermediates into the explored Ru-H bond to generate Ru-OOCH species and ultimately CH4 and H2O in the presence of H2.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Nanoscience & Nanotechnology
Zige Tai, Guotai Sun, Ting Wang, Zhihui Li, Jinge Tai
Summary: A mesoporous C-doped TiO2 netted nanostructure is successfully synthesized using multiwalled carbon nanotubes as a confinement template and depositing small Cu nanoparticles on the TiO2 surfaces. The obtained photocatalyst exhibits high CH4 and CO production rates, thanks to its good crystallinity, small size, unique netted mesoporous structure, C-doping, and Cu nanoparticles.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Qinjun Song, Baojia Shen, Jiaguo Yu, Shaowen Cao
Summary: The design of a 3D hierarchical TiO2/Ti3C2Tx heterojunction by in-situ formation of TiO2 on the surface of Ti3C2Tx nanosheets has led to significantly improved photocatalytic activity. The optimized sample exhibits a higher CH4 evolution rate, attributed to more efficient electron-hole separation and better light absorption in the hierarchical structure.
Article
Chemistry, Multidisciplinary
Changchao Jia, Bingjie Wan, Wengang Liu, Linguang Qi, Xiaoxue Liu, Xinxin Han, Ailin Gao, Jian Liu
Summary: Modulating the surface microenvironment of photocatalysts with hydrogen peroxide (H2O2) can significantly enhance the efficiency and selectivity of CO2 reduction. This study highlights the importance of tailoring the catalyst surface microenvironment for efficient CO2 reduction.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Engineering, Environmental
Jiangrong Xiao, Chi Chen, Shengtao Chen, Haoran Liu, Tianyou Peng
Summary: A facile and robust method of co-decorating Pt/MnOx dual cocatalysts on sea-urchin-like anatase TiO2 microspheres (AMS) is reported to significantly improve the CO2 reduction reaction (CO2RR) activity and CH4 product selectivity. The synergistic effect of dual cocatalysts on AMS leads to a significantly improved CO2RR performance.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Mengnan Nie, Chao Zhou, Weiwei Feng, Changhui Xin, Xin Yu, Qian Li
Summary: Self-doped Ti3+-TiO2 and amorphous ZnS layers-coated Ti3+-TiO2 nanostructures were successfully synthesized for organic pollutant degradation under visible-light illumination. The Ti3+-TiO2 clusters exhibited efficient visible-light absorption and photocatalytic performance, while the amorphous ZnS layers greatly enhanced the charge separation between ZnS layers and self-doped Ti3+-TiO2 clusters. The Ti3+-TiO2@ZnS-15% heterojunction showed the highest photocatalytic activity, approximately 9.87 times that of commercial TiO2, and also exhibited enhanced performance in degrading ciprofloxacin and tetracycline under visible-light illumination.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Green & Sustainable Science & Technology
Kamil Urbanek, Kaja Spilarewicz, Jiaguo Yu, Wojciech Macyk
Summary: This work designed an advanced photocatalytic system composed of titanium dioxide (P25) and mSFO (Sn-doped magnetite with Fe-doped cassiterite) for gas phase CO2 reduction. A synthesis route of mSFO composite was proposed, and the obtained material was characterized by various techniques. The mSFO/P25 system showed photocatalytic reduction ability of CO2 to CO, which was confirmed by the use of labeled carbon dioxide. The surface photovoltage and electrochemical measurements supported the S-scheme mechanism.
MATERIALS TODAY SUSTAINABILITY
(2023)
Article
Chemistry, Physical
Oleksandr Shtyka, Viktar Shatsila, Radoslaw Ciesielski, Adam Kedziora, Waldemar Maniukiewicz, Sergey Dubkov, Dmitry Gromov, Andrey Tarasov, Jacek Rogowski, Andrey Stadnichenko, Petr Lazarenko, Roman Ryazanov, Malgorzata I. Szynkowska-Jozwik, Tomasz Maniecki
Summary: The photocatalytic activity of TiO2 is mainly determined by the desorption rate of reaction intermediates and final products, the specific surface area, and binding strength. Rutile exhibits higher photocatalytic activity than anatase/rutile mixtures due to its efficiency in the visible portion of the electromagnetic spectrum.
Article
Chemistry, Multidisciplinary
Aliakbar Nosrati, Shahrzad Javanshir, Farzaneh Feyzi, Sara Amirnejat
Summary: This study developed hierarchical ternary and quaternary hybrid photocatalysts based on graphene oxide, TiO2, Ag2O, and arginine for combined CO2 capture and photocatalytic reductive conversion to methanol under visible and UV light irradiation. The catalysts showed high efficiencies and selectivity, making them promising for environmental research.
Article
Chemistry, Multidisciplinary
Kadhim Al-Attafi, Hamza A. Mezher, Ali Faraj Hammadi, Amar Al-Keisy, Sameh Hamzawy, Hamzeh Qutaish, Jung Ho Kim
Summary: Hierarchical aggregates of anatase TiO2 nanoribbons/nanosheets (TiO2-NR) and anatase TiO2 nanoparticles (TiO2-NP) were synthesized using a solvothermal reaction. TiO2-NR exhibited a three-dimensional hierarchical structure, while TiO2-NP had a nanoparticulate structure. Compared to commercial TiO2 (P25), both TiO2-NR and TiO2-NP showed higher photocatalytic and photocurrent performance. The solvothermal synthesis method used in this study offers potential for various energy harvesting applications.
Article
Chemistry, Physical
Xingwei Zhang, Peng Wang, Xuyu Lv, Xiangyue Niu, Xinyuan Lin, Shuxian Zhong, Dongmei Wang, Hongjun Lin, Jianrong Chen, Song Bai
Summary: The fabrication of semiconductor heterojunctions into hollow nanostructures can enhance the photocatalytic performance, but also faces challenges. In this study, a stacking design of semiconductor heterojunctions on hollow carbon spheres is reported, which significantly improves the photocatalytic activity in CO2-to-CO conversion. The design utilizes the advantages of hollow carbon, such as improved light harvesting, promoted charge separation, increased CO2 adsorption, and protected CdS from photocorrosion. The design can be extended to other semiconductor heterojunctions.
Article
Chemistry, Physical
Jinghao Huo, Yijie Ren, Guoqiang Zhang, Xiaofei Wang, Shouwu Guo
Summary: In this study, hierarchical TiO2/C nanofibers with anatase/TiO2(B) mixed phases were successfully synthesized by a dual-template method. The TiO2/C anode exhibited high reversible discharge capacity, remarkable rate capacity, and stable sodium storage performance, making it a reliable approach for building superior performance TiO2 anode materials for sodium-ion batteries.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Qian Wang, Xinxin Fang, Pin Hao, Wenwen Chi, Fang Huang, Xifeng Shi, Guanwei Cui, Yuan Liu, Bo Tang
Summary: Porous hierarchical bronze/anatase phase junction TiO2 assembled by ultrathin two-dimensional nanosheets was successfully prepared through a novel and green solvent-regulated strategy, showing enhanced photocatalytic activities for various antibiotics.
CHEMICAL COMMUNICATIONS
(2021)
Article
Engineering, Chemical
Zhihang Li, Weichun Bai, Dan Liu, Baochen Han, Yongmei Liang, Jian Qi
Summary: This study successfully prepared Ni-x/TiO2-OV photocatalytic materials with ultra-high oxygen vacancy concentrations using preloading method. It was found that the catalytic performance initially increases and subsequently declines with an increase in oxygen vacancy concentration within a certain range.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Environmental
Ruchun Li, Panyong Kuang, Swelm Wageh, Ahmed A. Al-Ghamdi, Haolin Tang, Jiaguo Yu
Summary: In this study, a core@shell structure of metallic Ni@O-riched Ni layer (Ni@O-Ni) pre-electrocatalyst was established, which possesses a unique self-adaptable ability for potential-dependent reconstruction to generate actual active sites for catalytic reactions. The catalytic system showed outstanding efficiency and stability in hydrogen evolution reaction (HER) and organic compound oxidation reaction.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Tao Liu, Yu Yang, Shaowen Cao, Ronghua Xiang, Liuyang Zhang, Jiaguo Yu
Summary: Nanopores on graphene surface enhance the longitudinal diffusion of electrolyte ions, leading to improved rate performance and cycle stability of the electrode materials.
ADVANCED MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Huaxing Li, Rongjie Li, Gang Liu, Maolin Zhai, Jiaguo Yu
Summary: Artificial photosynthesis aims to convert solar energy into chemical energy, mitigate environmental pollution, and produce sustainable solar fuels and chemicals. The key to artificial photosynthesis systems is efficient, robust, and low-cost photocatalysts. Single-atom catalysts (SACs) and dual-atom catalysts (DACs) have gained significant attention due to their unique photocatalytic properties, while noble-metal-free catalysts offer abundance, availability, and cost-effectiveness for scalable implementation. This review outlines the principles, synthesis methods, and recent advances in SACs and DACs based on non-noble metals, using organic or inorganic substrates as scaffolds in solar-light-driven photocatalytic reactions. The review concludes with discussing the challenges, opportunities, and future prospects of noble-metal-free SACs and DACs for artificial photosynthesis.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Bowen He, Cheng Luo, Zhongliao Wang, Liuyang Zhang, Jiaguo Yu
Summary: The dual cocatalysts (Pt and Co polyoxometalate (POM)) modified TiO2 was synthesized to enhance the production of H2O2 and HCOOH. The oxo-bridged POM facilitates H2O2 desorption and retards decomposition, while the deposited Co POM acts as a photoelectron reservoir and electron transfer bridge to metallic Pt. Polystyrene (PS) spheres enable the photocatalysts to float on the liquid surface for better light utilization and contact with reactants.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Xianglin Xiang, Bicheng Zhu, Jianjun Zhang, Chenhui Jiang, Tao Chen, Huogen Yu, Jiaguo Yu, Linxi Wang
Summary: The slow oxygen evolution reaction (OER) was replaced by selective benzyl alcohol (BA) oxidation to benzaldehyde (BD) to promote H2 production. The CdS quantum dots, modified with Co2+ hole cocatalysts, were used as photocatalysts to accelerate the rate-limiting BA oxidation. The photocatalytic system exhibited a high H2-production rate and a remarkable apparent quantum yield under 365-nm light irradiation. This work exemplifies a bifunctional photocatalytic system for simultaneous production of self-separated hydrogen and benzaldehyde, both of which are important industrial products.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Analytical
Yu Peng, Bei Cheng, Liuyang Zhang, Jingjing Liu, Jiaguo Yu
Summary: A highly responsive formaldehyde sensor of In2O3@ZnO derived from MIL-68(In)@ZIF-8 precursor was successfully prepared in this study. By adjusting the ratio of In2O3 and ZnO, the resulting sensor showed significantly improved performance under 100 ppm HCHO at an operating temperature of 220 degrees C, with a detection limit as low as 4 ppb. The sensor also exhibited excellent selectivity (Q >= 10), anti-interference (deviation value <= 3.5%), and long-lasting stability (variation value <= 4%). This work highlights the significant improvement in gas sensing performance through ingenious heterojunction construction.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Multidisciplinary
Yang Xia, Bicheng Zhu, Liuyi Li, Wingkei Ho, Jinsong Wu, Haoming Chen, Jiaguo Yu
Summary: In this study, a simple strategy of engineering Pt single atoms on a 2D hydrazone-based covalent organic framework (TCOF) was proposed to promote H-2 production coupled with selective oxidation of benzylamine. The optimised TCOF-Pt SA photocatalyst exhibited superior performance compared to TCOF and TCOF-supported Pt nanoparticle catalysts. The atomically dispersed Pt on the TCOF support induced local polarization and improved the dielectric constant, resulting in the promotion of exciton dissociation and the acceleration of charge carrier separation and transport.
Article
Chemistry, Multidisciplinary
Han Li, Qinjun Song, Sijie Wan, Ching-Wei Tung, Chengyuan Liu, Yang Pan, GuoQiang Luo, Hao Ming Chen, Shaowen Cao, Jiaguo Yu, LianMeng Zhang
Summary: Single-atom Pt anchored on 3D hierarchical TiO2-Ti3C2 with atomic-scale interface engineering is synthesized through an in situ transformation and photoreduction method. The optimized photocatalyst exhibits excellent CO2-to-CO conversion activity of 20.5 mu mol g(-1) h(-1) with a selectivity of 96%, which is five times that of commercial TiO2 (P25). This work sheds new light on designing ideal atomic-scale interface and single-atom catalysts for efficient solar fuel conversation.
Proceedings Paper
Computer Science, Artificial Intelligence
Jiaguo Yu, Huming Qiu, Dubing Chen, Haofeng Zhang
Summary: This paper proposes a new method called Weighted Contrative Hashing (WCH) to address the problems in contrastive learning. The proposed method introduces a novel mutual attention module and explores fine-grained semantic relations between images to improve retrieval performance. Experimental results show that WCH outperforms existing unsupervised hashing methods on three benchmark datasets.
COMPUTER VISION - ACCV 2022, PT V
(2023)
Article
Chemistry, Applied
Han Li, Shanren Tao, Sijie Wan, Guogen Qiu, Qing Long, Jiaguo Yu, Shaowen Cao
Summary: S-scheme heterojunction is a promising approach to improve the light absorption and charge recombination issues in g-C3N4-based photocatalysts. In this study, a ZCS@DBTCN S-scheme heterojunction photocatalyst was synthesized, which exhibited superior photocatalytic H2 production activity. The enhanced performance was attributed to the synergistic effect of intramolecular electric field and S-scheme heterojunction that enhanced charge separation and transport.
CHINESE JOURNAL OF CATALYSIS
(2023)
Article
Chemistry, Applied
Haifeng Wang, Fan Wang, Xiaopeng Li, Qi Xiao, Wei Luo, Jingsan Xu
Summary: Plasmonic metal nanoparticles, specifically the AuPd alloy, have shown enhanced catalytic performance for photocatalysis. The formation of electron-deficient Pd sites (Pds') on AuPd alloy nanoparticles under visible light irradiation is crucial for their photocatalytic activity. The in-situ-formed Pds' provide efficient catalytic sites with lower activation energy barrier, leading to excellent conversion and selectivity in the Heck cross-coupling reaction under ambient conditions.
CHINESE JOURNAL OF CATALYSIS
(2023)
Article
Chemistry, Inorganic & Nuclear
Peng Meng, Aidan Brock, Xiaodong Wang, Yuting Wang, John McMurtrie, Jingsan Xu
Summary: A new supramolecular structure of cyanuric acid-melamine-zinc (CA-M-Zn) is found to exhibit negative thermal expansion (NTE) due to molecular rotation, with volumetric expansion coefficient alpha(v) = -197 x 10(-6) K-1 and linear expansion coefficient alpha(c) = -242 x 10(-6) K-1, accompanied by a decrease of beta angle (-3.8%).
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Multidisciplinary
Tao Liu, Xuejie Wang, Yang Han, Yingqi Wu, Liuyang Zhang, Jiaguo Yu
Summary: NiMn2O4/C hollow spheres with sandwich-structured shells were synthesized by hydrothermal method. The mesoporous carbon hollow spheres facilitated the uniform dispersion of NiMn2O4 nanosheets on both inner and outer surfaces of the carbon shells. NiMn2O4/C exhibited excellent rate capability and prolonged cycling durability for sodium ion storage.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Zheng Meng, Jianjun Zhang, Chenchen Jiang, Christos Trapalis, Liuyang Zhang, Jiaguo Yu
Summary: This study investigates CdS hollow spheres loaded with different noble metal nanoparticles using femtosecond transient absorption spectroscopy. The research finds that different noble metals have different influences on photocatalysis, and the presence of water has an important effect on the metal/CdS interface state.
Article
Chemistry, Physical
Fangxin Yin, Pinquan Qin, Jingsan Xu, Shaowen Cao
Summary: Photocatalytic hydrogen production using graphitic carbon nitride (g-C3N4) is a promising strategy for utilizing solar energy. This study synthesized an intramolecular donor-acceptor (D-A) structured g-C3N4 nanosheet photocatalyst, which exhibited enhanced charge carrier separation and improved photocatalytic activity. By integrating the intramolecular D-A system and ultra-thin nanosheet structure, this photocatalyst showed extended absorption edge and increased specific surface area. This work offers valuable insights for developing D-A-modified photocatalytic materials for solar energy conversion.
ACTA PHYSICO-CHIMICA SINICA
(2023)
