Article
Chemistry, Physical
Agnieszka Wanag, Ewelina Kusiak-Nejman, Adam Czyzewski, Dariusz Moszynski, Antoni W. Morawski
Summary: In this study, a series of TiO2/rGO photocatalysts were prepared via a solvothermal method and calcination in an argon atmosphere. The presence of rGO was found to affect the crystallite size and specific surface area, enhancing the photocatalytic activity of the catalysts.
Article
Chemistry, Multidisciplinary
Na Qin, Aojie Mao, Junhua Zou, Liwei Mi, Ling Wu
Summary: In this study, Zn0.5Cd0.5S-TiO2 (ZCS-TiO2) heterojunction photocatalysts were prepared for efficient hydrogen production under visible light. Surface modification with reduced graphene oxide (RGO) in RGO/ZCS-TiO2 composite heterojunction photocatalysts further enhanced the photocatalytic activity.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Polymer Science
Yu Ren, Ziyao Zhao, Wenwen Jiang, Guangyu Zhang, Yuxin Tan, Yongyin Guan, Long Zhou, Li Cui, Sung Woong Choi, Mei-Xian Li
Summary: In this study, Y2O3/TiO2-loaded polyester fabric was prepared to enhance the catalytic activity and reuse efficiency of TiO2. The TiO2 in the composite photocatalyst exhibited suitable anatase phase. The Y2O3/TiO2-loaded polyester fabric demonstrated higher photocatalytic performance and self-cleaning effects under visible light compared to pure polyester fabric.
Article
Engineering, Electrical & Electronic
Aleesha Ali, Mohd Shoeb, Baoan Li, Mohd Asim Khan
Summary: This study investigated the effect of reduced graphene oxide on the photocatalytic activity of MoO3/TiO2 nanocomposites. The results showed that the addition of reduced graphene oxide enhanced the photocatalytic activity and achieved degradation of drugs and dyes through electrostatic interactions and synergistic effects.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Engineering, Environmental
Periyakaruppan Karuppasamy, Nagoorkani Ramzan Nilofar Nisha, Arivalagan Pugazhendhi, Sabariswaran Kandasamy, Sakthivel Pitchaimuthu
Summary: The study focused on preparing semiconducting materials like TiO2 and transition metal-doped TiO2 using a sol-gel method and characterizing them through various analyses. Among them, Zn-doped TiO2 showed the best photocatalytic efficiency in decolouring Methylene blue dye under visible light irradiation. Results indicated that Zn-doped TiO2 had a lower band gap, leading to enhanced dye degradation compared to other catalysts. UV-vis spectra and the decolouration percentage of Methylene blue showed the superior photocatalytic activity of Zn-doped TiO2.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Chemical
Rui Yu, Yanling Yang, Zhiwei Zhou, Xing Li, Jingfeng Gao, Nan Wang, Jiaqi Li, Yongwang Liu
Summary: In this study, a ternary heterojunction composite of bismuth oxide, titanium dioxide, and reduced graphene oxide was successfully synthesized via a one-step hydrothermal process. The composite exhibited strong visible-light responsiveness and high separation efficiency of photogenerated carriers. It showed excellent degradation performance towards tetracycline and outperformed other composites. The photodegradation mechanism involved the generation of O-center dot(2)- radicals and holes, and the breakage of carbon-carbon double bonds and nitrogen-carbon bonds in tetracycline.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Sidra Bibi, Awais Ahmad, Mohsin Ali Raza Anjum, Abdul Haleem, Muhammad Siddiq, Syed Sakhawat Shah, Abdullah Al Kahtani
Summary: The reduced graphene oxide-based iron oxide modified titania composite exhibited excellent photocatalytic performance for the degradation of malachite green and methylene blue under visible light, showing great potential for visible light-driven photocatalytic degradation processes.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Physical
Sijia Liu, Tengyao Jiang, Maohong Fan, Gang Tan, Sheng Cui, Xiaodong Shen
Summary: In response to the global issue of excessive carbon dioxide emissions, this study synthesized TiO2-rGO composite aerogels for photoconversion of CO2 using a one-step hydrothermal and freeze-drying method. The composite aerogel demonstrated improved photocatalytic performance, efficiently converting CO2 into MeOH, CH4, and EtOH through enhanced absorption capability and fast molecular transfer. The introduction of 3D rGO promoted the light absorption efficiency of TiO2 and the specific chemical bonding between rGO and TiO2 effectively mitigated electron-hole pair recombination.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Tsung-Mo Tien, Edward L. Chen
Summary: The MoS2/TiO2/graphene (MTG) nanohybrids were found to be highly efficient co-photocatalysts for hydrogen evolution. Among them, MTG-10 achieved the best hydrogen evolution performance, with a rate almost 7.5 to 13.4 times higher than that of pristine MoS2 and TiO2 samples. This improvement is attributed to the graphene acting as a bridge between MoS2/TiO2 and its synergistic effect in enhancing rapid electron-transferring and electron-collecting efficiency, thus suppressing charge recombination.
Article
Energy & Fuels
Yunfei Yan, Jianbo Li, Tao Jia, Haojie Li, Kaiming Shen, Ziqiang He
Summary: Fe- and graphenecomodified TiO2 was synthesized and showed high photocatalytic performance for hydrogen production. The addition of Fe3+ and graphene effectively modified TiO2, expanding its visible-light absorption range and reducing the band gap. These findings are crucial for the design of high-performance TiO2-based photocatalysts for photocatalytic hydrogen production.
Article
Engineering, Environmental
Yahui Zhou, Xiaohua Cheng, Zijian Duan, Xin Liu, Huiyu Yang, Bo Deng
Summary: In this study, black TiO2 microspheres photocatalysts with high light absorption intensity and photosensitive activity were prepared using a simple two-step method. The reduced TiO2 exhibited a unique core-shell composite structure, which effectively reduced the band gap of the photocatalyst. The photocatalytic activity of the prepared catalyst was higher than that of the commercial catalyst.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Pan Xiong, Siming Xu, Tongtong Yang, Keju Jing
Summary: A new graphene-based nanocomposite material was synthesized for the efficient removal of Cd(II) and photodegradation of phenolic compounds from wastewater. Optimal catalytic degradation and adsorption performance were achieved at pH 5.5 for this nanocomposite.
Article
Biochemistry & Molecular Biology
Rania Elshypany, Hanaa Selim, K. Zakaria, Ahmed H. Moustafa, Sadeek A. Sadeek, S. I. Sharaa, Patrice Raynaud, Amr A. Nada
Summary: A composite material of magnetite zinc oxide and reduced graphene oxide showed superior photocatalytic activity compared to pure magnetite zinc oxide and zinc oxide nanoparticles, due to synergistic effect between magnetite and zinc oxide in the presence of reduced graphene oxide. In addition, the fabricated nanocomposite displayed high electron-hole stability and remained stable after multiple uses.
Article
Chemistry, Multidisciplinary
Semih Gorduk, Oguzhan Avciata, Ulvi Avciata
Summary: In this study, phthalocyanine (Pc)-TiO2 nanocomposites were successfully prepared using the in situ hydrothermal method. These nanocomposites showed significant photocatalytic activity towards the degradation of methylene blue (MB) under visible light irradiation, achieving complete degradation in 100-130 minutes. Reusability studies indicated that the photocatalysts maintained 76% activity even after 5 uses.
RESEARCH ON CHEMICAL INTERMEDIATES
(2021)
Article
Engineering, Chemical
Xingjun Lu, Zhipeng Yue, Bangzhu Peng
Summary: In this study, TiO2 nanotubes were prepared as photocatalysts for the degradation of heat-stable mycotoxin PAT in simulated juice. The results showed that calcinated TNTs-450 had high adsorption performance and photocatalytic activity, completely degrading PAT within a short period of time.
JOURNAL OF FOOD ENGINEERING
(2022)