Article
Green & Sustainable Science & Technology
Xuan-xuan Zhang, Ying-guan Xiao, Shun-sheng Cao, Zheng-liang Yin, Zhao-Qing Liu
Summary: A new confined ternary photocatalyst TiO2@Bi2O3@TiO2 was designed by embedding Bi2O3 into hierarchical hollow TiO2 spheres. This photocatalyst exhibited strong visible-light absorption and efficient charge separation, enabling the complete degradation of tetracycline under visible light. The introduction of confinement effect significantly improved the cyclic stability of the catalyst.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Multidisciplinary Sciences
Yajuan Ma, Xiaoxuan Yi, Shaolei Wang, Tao Li, Bien Tan, Chuncheng Chen, Tetsuro Majima, Eric R. Waclawik, Huaiyong Zhu, Jingyu Wang
Summary: By incorporating Pd(II) sites into a coordination polymer on TiO2, selective adsorption of CO2 can be achieved for photocatalytic reduction in the presence of O-2, facilitating the conversion of CO2 to fuels.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Mareike Liebertseder, Di Wang, Guelperi Cavusoglu, Maria Casapu, Sheng Wang, Silke Behrens, Christian Kuebel, Jan-Dierk Grunwaldt, Claus Feldmann
Summary: TiO2 hollow nanospheres with high surface area and pore volume, with well-distributed Pd/Pt nanoparticles. The catalytic testing shows promising performance in H2O2 selectivity and productivity for TiO2-Pd HNS, and good CO oxidation capability for TiO2-Pt HNS.
Article
Engineering, Environmental
Qi Wang, Wenming Zhang, Xiaoru Hu, Limei Xu, Guodong Chen, Xiaochen Li
Summary: A novel hollow-sphere structure of WO3/TiO2 heterojunction was prepared by a combination of hydrothermal and calcination method. The heterojunction showed improved photocatalytic performance in degrading dye and micro-organic pollutant, with TiO2 acting as a photo-generated hole acceptor to enhance photocatalytic efficiency. This makes it a promising candidate for wastewater treatment.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Chemistry, Physical
Xiang-Wei Jiao, Yan-Hong Tian, Xue-Jun Zhang
Summary: The study introduces a novel nanostructured Si-based material comprised of hollow Si spheres encapsulated in an amorphous TiO2 layer (HN-Si@aTiO(2)). The composite exhibits high capacity performance and enhanced cycling stability, showing great prospects as next-generation lithium-ion anode materials.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Mengyuan Teng, Haixia Liu, Bensheng Lin, Xiangzhu Zhou, Wei Zhou
Summary: Titanium dioxide is widely used for solving energy and environmental pollution problems due to its excellent properties. In this study, anatase TiO2 with a unique hexagonal framework structure was successfully prepared and demonstrated excellent photocatalytic performance.
Article
Chemistry, Multidisciplinary
Gaomin Ning, Yan Zhang, Chunjing Shi, Chen Zhao, Mengmeng Liu, Fangfang Chang, Wenlong Gao, Sheng Ye, Jian Liu, Jing Zhang
Summary: Engineering the surface structure of semiconductor is a promising strategy for improving charge separation and transfer efficiency in photocatalysis. In this study, C decorated hollow TiO2 photocatalysts (C-TiO2) were designed and fabricated. The optimal C content and Ti-O-C bonds in C-TiO2 were found to enhance light absorption and promote charge separation and transfer, leading to a 5.5-fold higher activity in H2 evolution compared to TiO2. This work provides a feasible strategy for rational design and construction of surface-engineered hollow photocatalysts to enhance photocatalytic performance.
Article
Chemistry, Physical
Xibo Zhang, Yaqin Wang, Kuan Chang, Shuangli Yang, Huijie Liu, Qian Chen, Zhaoxiong Xie, Qin Kuang
Summary: In this study, a unique hollow porous nanocage structure was prepared for Pd/ H-TiO2 catalysts to selectively convert methane into methanol under mild conditions with the reaction of O2. The obtained Pd/H-TiO2 exhibited a high methanol production rate of 4.5 mmol/g/h with a selectivity of up to 70% under optimized conditions, surpassing most reported values. The mechanism study revealed the significant role of ˙OH radicals produced by photogenerated holes in the activation of methane into ˙CH3 species, which were further oxidized into methanol by ˙O2 radicals formed by photogenerated electrons. The strong metal-support interaction and unique porous hollow structure effectively enhanced the catalytic activity. These findings provide guidance for the design of high-performance photocatalysts for the selective photocatalytic oxidation of methane.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Dinh Chuong Nguyen, Thi Luu Luyen Doan, Sampath Prabhakaran, Duy Thanh Tran, Do Hwan Kim, Joong Hee Lee, Nam Hoon Kim
Summary: The Co and Nb dual-doping strategy modifies the electronic structure of MoS2, enhancing the efficiency of the Co,Nb-MoS2/TiO2 HSs catalyst for hydrogen evolution, oxygen evolution reaction, and oxygen reduction reaction. The unique hollow spherical structure and synergistic effects between TiO2 core and MoS2 shell provide effective channels for electron transfer and facilitate ion diffusion.
Article
Chemistry, Multidisciplinary
Xiao Wang, Fei Zhao, Nan Zhang, Wenli Wu, Yuhua Wang
Summary: Inspired by the unique properties of three-dimensional hollow nanostructures in photocatalysis, porous hollow spherical Pd/CdS/NiS photocatalysts were prepared by stepwise synthesis. The Schottky junction between Pd and CdS accelerates electron transport, while the p-n junction between NiS and CdS traps holes. With Pd nanoparticles loaded inside and NiS outside the hollow CdS shell layer, the combination with the hollow structure enables spatial carrier separation. This synergistic effect leads to enhanced stability and significantly increased H-2 production, making Pd/CdS/NiS a promising photocatalyst.
Article
Chemistry, Analytical
Tingting Wang, Liang Cheng
Summary: The hollow TiO2-SnO2-TiO2 composite nanofibers were successfully synthesized using a two-step method, showing excellent gas sensing performance and high selectivity at low operating temperatures, attributed to their hollow structure and n-n heterojunction.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Physical
Liang Fu, Qi Wang, Hanna He, Yougen Tang, Haiyan Wang, Hualin Xie
Summary: Designing a unique dual carbon coated hollow sphere structured TiO2 can effectively address the issues of sluggish Na+ diffusion and low electronic conductivity in sodium ion batteries, resulting in improved electronic conductivity and enhanced ion diffusion kinetics, achieving high reversible capacity, excellent rate capability, and cycling stability.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Analytical
Jintao Lv, Peidian Chong, Shiqi Huang, Yafeng Li, Mingdeng Wei
Summary: Dual-phase TiO2 hollow microspheres were designed in this study, and the TiO2-MS anode showed excellent sodium storage performance due to the synergistic effect of hierarchical structure and dual-phase TiO2 nanoparticles, maintaining stable cycling performance even at high current densities.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Physical
Jiaqin He, Fangfang Zheng, Yuanbo Zhou, Xunxun Li, Yaru Wang, Jun Xiao, Youyong Li, Dongyun Chen, Jianmei Lu
Summary: A series of 3D@2D constructed Al2O3@CoMn2O4 microspheres with a hollow hierarchical structure supporting Pd nanoparticles were successfully synthesized. The catalyst exhibited excellent catalytic activity, high stability, water-resistance, and low-cost, making it a promising candidate for VOC combustion. The introduction of hollow Al2O3 and in situ growth of 2D CMO spinel materials in the microspheres resulted in a well-defined core-shell hollow hierarchical structure with larger specific surface area and promoted catalytic activity. The optimum catalyst showed the lowest apparent activation energy for toluene and achieved 100% conversion of toluene, benzene, and ethyl acetate at relatively low temperatures.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Huimin Liu, Chenyi Yuan, Shipeng Wu, Chao Sun, Zhen Huang, Hualong Xu, Wei Shen
Summary: In this study, a nanoflower-like TiO2-supported Pd catalyst was developed with a higher concentration of oxygen vacancies and surface hydroxyl groups. The distinctive structure of the nanoflower-like TiO2 resulted in improved dispersion and stabilization of Pd species, as well as the activation of CO and O-2 molecules. As a result, the catalyst exhibited remarkable efficiency and stability in low-temperature CO oxidation reaction.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Shuoshuo Zhang, Wenhong Pu, Hao Du, Yunyang Wang, Changzhu Yang, Jianyu Gong
APPLIED SURFACE SCIENCE
(2018)
Article
Chemistry, Physical
Jianyu Gong, Ayan Chen, Yunyang Wang
Article
Chemistry, Physical
Hao Du, Wenhong Pu, Yunyang Wang, Kai Yan, Jun Feng, Jingdong Zhang, Changzhu Yang, Jianyu Gong
JOURNAL OF ALLOYS AND COMPOUNDS
(2019)
Article
Engineering, Environmental
Min-Hui Son, Jianyu Gong, Sunghee Seo, Hakwon Yoon, Yoon-Seok Chang
JOURNAL OF HAZARDOUS MATERIALS
(2019)
Article
Chemistry, Multidisciplinary
Hao Du, Changzhu Yang, Wenhong Pu, Hao Zhao, Jianyu Gong
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2019)
Article
Chemistry, Physical
Yunyang Wang, Changzhu Yang, Ayan Chen, Wenhong Pu, Jianyu Gong
APPLIED CATALYSIS B-ENVIRONMENTAL
(2019)
Article
Environmental Sciences
Lingyu Zeng, Jianyu Gong, Jinfeng Dan, Shuang Li, Jingdong Zhang, Wenhong Pu, Changzhu Yang
Article
Engineering, Environmental
Yake Xu, Lingyu Zeng, Lanqing Li, Yoon-Seok Chang, Jianyu Gong
CHEMICAL ENGINEERING JOURNAL
(2019)
Article
Engineering, Environmental
Shuoshuo Zhang, Wenhong Pu, Ayan Chen, Yake Xu, Yunyang Wang, Changzhu Yang, Jianyu Gong
JOURNAL OF HAZARDOUS MATERIALS
(2020)
Article
Engineering, Environmental
Di Wang, Yuqing Sun, Daniel C. W. Tsang, Deyi Hou, Eakalak Khan, Daniel S. Alessi, Yaoyu Zhao, Jianyu Gong, Linling Wang
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Chemistry, Multidisciplinary
Hao Du, Changzhu Yang, Wenhong Pu, Lingyu Zeng, Jianyu Gong
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2020)
Article
Environmental Sciences
Ayan Chen, Guanwen Chen, Yunyang Wang, Yun Lu, Jianxiong Chen, Jianyu Gong
Summary: A novel oxide compound Ag4Bi2O5 was prepared using simple ball milling with optimized photocatalytic activity for degradation of gaseous toluene. Reactive oxygen species (ROS) and oxygen vacancies on the surface of Ag4Bi2O5 were responsible for promoting the transfer of photogenerated electrons, enhancing the photocatalytic activity. The theoretical band gap and work function of Ag4Bi2O5 were calculated demonstrating its potential as an efficient photocatalyst for air remediation.
ENVIRONMENTAL RESEARCH
(2021)
Article
Environmental Sciences
Huimin Zhang, Xiaoming Su, Benjian Sun, Yake Xu, Jianyu Gong
Summary: The study showed that bimetallic Bi/Fe0 nanoparticles cooperated with citric acid and sodium citrate can efficiently remove atrazine, with high stability and long service life. The citrate iron complex plays a key role in the degradation process by broadening the applicable pH range of the traditional Fenton reaction.
Article
Chemistry, Multidisciplinary
Alexander Luis Imbault, Jianyu Gong, Ramin Farnood