Article
Chemistry, Multidisciplinary
Junfeng Yang, Yuyang Wu, Yanhui Dong, Hao Cui, Chenyang Shi, Hang Sun, Shengyan Yin
Summary: A ternary Bi@H-TiO2/B-C3N4 type II heterostructure was designed and prepared with metallic Bi as a cocatalyst for enhanced photocatalytic hydrogen production. The results showed that Bi@H-TiO2/B-C3N4 exhibited significantly improved photocatalytic activity under visible light compared to other materials.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Weizi Zhang, Xinxin Li, Shaoru Liu, Jianhao Qiu, Jiahuan An, Jianfeng Yao, Songlin Zuo, Bo Zhang, Haian Xia, Changzhi Li
Summary: In this study, Ag/TiO2 materials with different interfacial structures were prepared and used for the photocatalytic conversion of biomass-derived 5-HMF to value-added HMFCA. It was found that low-temperature reduction could enhance the photoinduced charge separation efficiency and the localized surface plasmon resonance effects. The 2.5% Ag/TiO2-LTR showed the highest HMFCA selectivity of 96.7% under visible-light illumination. However, the photocatalytic efficiency decreased significantly when the reduction temperature increased due to the encapsulation of Ag NPs by a thicker TiOx overlay.
Article
Materials Science, Multidisciplinary
Nesrine Ben Saber, Amine Mezni, Arwa Alrooqi, Tariq Altalhi
Summary: In this study, a ternary nanocomposite of gold-titania/rGO was prepared using a modified solvothermal process, showing high efficiency in the photocatalytic decomposition of organic pollutants and dyes. The rGO layers act as excellent electron transporters, facilitating the effective separation of electron-hole pairs, while the broad absorption spectrum of the ternary nanocomposite enhances photochemical reactions.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Green & Sustainable Science & Technology
Sangmo Kang, Jungho Hwang
Summary: This study presents a strategy for fabricating reduced graphene oxide-wrapped Ag/TiO2 nanofibers and demonstrates their efficient CO2 photoreduction performance under visible light.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Applied
Kunlei Wang, Kenta Yoshiiri, Lorenzo Rosa, Zhishun Wei, Saulius Juodkazis, Bunsho Ohtani, Ewa Kowalska
Summary: This study focuses on improving the photocatalytic activity and stability of gold-modified titania photocatalysts under visible-light irradiation. The modified photodeposition method is used to synthesize TiO2/Au/TiO2 composites that exhibit high photoactivity. The large gold nanoparticles are formed on rutile titania particles and partially covered with fine anatase titania nanoparticles, effectively enlarging the interface between titania and gold. Moreover, the partial coverage of gold by fine titania nanoparticles prevents gold aggregation and enhances the stability of the samples.
Article
Chemistry, Applied
Fei Zheng, Faqin Dong, Lin Zhou, Jieyu Yu, Xijie Luo, Xingyu Zhang, Zhenzhen Lv, Luman Jiang, Yuheng Chen, Mengqing Liu
Summary: Ce and C-S codoped mesoporous TiO2 nanocomposites were synthesized via a sol-gel method integrated with an evaporation-induced self-assembly approach. The synthesized samples were characterized and the results show that the codoping enhances the photocatalytic activity by narrowing the band gap, enhancing adsorption, trapping and transferring excited e-/h+ pairs, and suppressing recombination. The obtained C,S-TiO2/CeO2 materials have large specific surface areas and numerous pores, improving adsorption capability and providing mass and electron transfer channels. The photodegradation efficiency of RhB by C,S-TiO2/CeO2 is nearly 100% within 40 min, with a degradation efficiency 6.63 times that of undoped TiO2. The materials also exhibit excellent recoverability and stability.
JOURNAL OF RARE EARTHS
(2023)
Article
Chemistry, Multidisciplinary
Mikhail Lyulyukin, Tikhon Filippov, Svetlana Cherepanova, Maria Solovyeva, Igor Prosvirin, Andrey Bukhtiyarov, Denis Kozlov, Dmitry Selishchev
Summary: This study confirms that solid uranium oxycompounds and uranyl-grafted materials on nanocrystalline anatase TiO2 exhibit higher photocatalytic activity under visible light, with a significantly higher reaction efficiency compared to commercial photocatalysts.
Article
Chemistry, Multidisciplinary
Xiaodong Zhu, Juan Wang, Daixiong Yang, Jiawei Liu, Lili He, Mao Tang, Wei Feng, Xiaoqiang Wu
Summary: The study showed that Ag modification had negligible impact on the crystal structure and surface properties of ZnO, but effectively suppressed the recombination of photogenerated electrons and holes. Ag-ZnO photocatalysts exhibited significantly improved photocatalytic activity compared to commercial P25, mainly due to the generation of more O-2(-) radicals at Ag-ZnO heterojunctions.
Article
Chemistry, Physical
Yufang Li, Yangchun Feng, Hang Bai, Jinsong Liu, Dayuan Hu, Jiyu Fan, Honglie Shen
Summary: In recent years, industries have been releasing a large number of organic pollutants into the environment, causing pollution. Titanium dioxide (TiO2) is an important photocatalyst for removing organic contaminants. However, its application has been limited by the low utilization of visible light. To address this issue, black TiO2 was produced to enhance visible light absorption, and black TiO2/SnO2 composites were synthesized to improve photocatalytic activity. The composites showed superior degradation efficiency and stability under visible light, attributed to the formation of a type II heterojunction.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Environmental
Qianqian Hu, Yifan Liu, Weian Li, Yanqi Wang, Wenhua Liao, Hanxun Zou, Jianrong Li, Xiaoying Huang
Summary: This study presents a facile and environmentally friendly method for synthesizing C, N co-doped mesoporous TiO2 nanocrystals, using IL-assisted microwave synthesis, resulting in small-sized TiO2 with well-developed mesoporous structure and abundant C, N dopants. The material exhibits high specific-surface area, excellent hydrophilicity, elevated valence-band edges, abundant defect levels, and narrowed band-gap, leading to improved visible-light absorption, reduced photogenerated electron-hole recombination, and rapid charge transfer and surface-catalyzed reactions.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Ceramics
Majdah R. Alotaibi, Ahmed Shawky, Z. I. Zaki
Summary: The petroleum sector is focusing on developing low-sulfur fuels to meet strict regulatory requirements. This study investigates the photocatalytic desulfurization of thiophene using mesoporous MoS2/ZrO2 nanostructures under visible light. The results show that MoS2/ZrO2 significantly enhances the photocatalytic efficiency compared to pure ZrO2, with the 1.5 wt% MoS2/ZrO2 nanostructured material exhibiting the highest efficiency.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Lachlan Campbell, Song Ha Nguyen, Hayden K. Webb, Daniel S. Eldridge
Summary: The evolution of antibiotic resistant bacteria poses a significant threat to public health, highlighting the need for effective and persistent disinfection techniques. This study introduces photocatalytic black TiO2-x material, which can be activated by visible light to exhibit disinfecting abilities and degrade organic dyes, as well as sterilizing bacteria.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Lingsong Wang, Huanshun Yin, Suo Wang, Jun Wang, Shiyun Ai
Summary: Bi/BiOCl/Bi2O2CO3 heterojunction with enhanced photocatalytic activity was prepared via one-step hydrothermal process under the synergistic catalysis of Ni2+, showing promising application potential in environmental remediation.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Engineering, Environmental
Yerin Hong, Yongjoon Cho, Eun Min Go, Pankaj Sharma, Hyeonjin Cho, Byongkyu Lee, Sang Myeon Lee, Sung O. Park, Myohwa Ko, Sang Kyu Kwak, Changduk Yang, Ji-Wook Jang
Summary: The study introduced a hydrophobic organic/inorganic photocatalyst that can utilize visible light and suppress H2O2 decomposition, leading to improved H2O2 production efficiency.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Suqing Wu, Xueyan Li, Yanqin Tian, Yan Lin, Yun Hang Hu
Summary: Black anatase-TiO2 shows higher efficiency in visible light photocatalytic tetracycline degradation compared to white TiO2 and N-doped TiO2, with a different degradation mechanism involving both O-2(-) and h(+) radicals.
CHEMICAL ENGINEERING JOURNAL
(2021)
