Article
Environmental Sciences
Wei Meng Liu, Jin Li
Summary: This study reports the synthesis of nitrogen-doped reduced graphene oxide (N-rGO)/zinc oxide (ZnO) composite photocatalysts by one-step hydrothermal method. Results showed that the catalyst exhibited the best photocatalytic degradation ability with 4 wt% nitrogen content. XPS tests indicated that the catalytic effect of the sample dominated by pyridinic nitrogen was significantly improved.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(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
Multidisciplinary Sciences
Sasireka Velusamy, Anurag Roy, Ezrah Mariam, Satheesh Krishnamurthy, Senthilarasu Sundaram, Tapas K. Mallick
Summary: This study synthesized a composite of reduced graphene oxide (rGO) and zinc oxide nanorods (ZnO) called rGO@ZnO, and tested its photocatalytic performance for reducing para-nitro phenol (PNP) to para-amino phenol (PAP) under both UV and visible light irradiation. The sample rGO(5)@ZnO exhibited remarkable photocatalytic activity, achieving a PNP reduction efficiency of approximately 98% within four minutes.
SCIENTIFIC REPORTS
(2023)
Article
Engineering, Chemical
Ma Qiang, Han Xiaomin, Lv Ke, Dong Rui, Hang Zhang, Xin Bo, Zheng Kewen
Summary: This study investigates the preparation and photocatalytic properties of graphene-ZnO nanorod composite with ultrasonic treatment, showing that composite materials prepared with appropriate proportions of raw materials exhibit good photocatalytic performance.
SEPARATION AND PURIFICATION TECHNOLOGY
(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
Nanoscience & Nanotechnology
Mianli Huang, Jiada Lin, Rong Li, Yanghang Su, Xiaojing Zhao, Yubin Liu, Wen-Jie Chen, Xiaobing Lian, Xuxing Chen, Xiaoyang Pan
Summary: In this study, hierarchical ZnO nanosheet-reduced graphene oxide (RGO) nanocomposites were prepared via a simple one-step process, with graphene oxide (GO) precursors effectively modulating the structure of ZnO nanosheets. By controlling the weight ratio of GO, the shape of the ZnO nanosheets could be tuned. The ZnO-RGO composites showed good photocatalytic performance for ethylene oxidation under simulated sunlight, with the optimal mass ratio of GO enhancing the stability and mineralization rate of ethylene to nearly 100%. The enhanced photo-oxidation performance was attributed to the intimate contact between RGO nanosheets and ZnO nanoparticles, promoting light absorption intensity and charge carrier separation.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Physical
A. K. Yadav, N. Padma, Gurupada Ghorai, Pratap K. Sahoo, Rekha Rao, Seemita Banarjee, A. K. Rajarajan, Pradip Kumar, S. N. Jha, D. Bhattacharyya
Summary: In this study, reduced graphene oxide (rGO) assisted two-dimensional graphitic ZnO (gZnO) was prepared and characterized using various techniques, confirming the formation of gZnO/rGO sandwiched layers. The relaxed structures of bilayers of gZnO sandwiched between rGO layers were found to have better stability and electronic structure, as supported by XANES and EXAFS measurements.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Xueli Jiang, Yongguo Zhu, Xiaolin Liu, Wen Sun, Shaoshi Guo, Yi Men
Summary: Novel flower-like Cu3SnS4 microspheres and Cu3SnS4/reduced graphene oxide composites were synthesized by a simple solvothermal method. The flower-like CTS microspheres loaded on the surface of rGO showed higher photocatalytic activity, degrading methyl orange more efficiently.
COLLOID AND INTERFACE SCIENCE COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Yingdi Ma, Yanli Liu
Summary: In this study, a composite photocatalyst of rGO-ZnO was prepared and characterized. The results showed that the rGO-ZnO composites exhibited significantly enhanced photocatalytic activity in the degradation of methyl orange, which was attributed to the high specific surface area and conductivity of rGO, facilitating efficient charge separation in the rGO-ZnO nanocomposite.
Article
Biotechnology & Applied Microbiology
Farnaz Ghorbani, Behafarid Ghalandari, Chaozong Liu
Summary: The study developed pomegranate-like PDAMS microspheres using self-oxidative polymerization technique, which resulted in uniform micron-sized particles with interactions with bone formation proteins and demonstrated in-vitro degradation capability, highlighting their potential for hard tissue repair applications.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Aayush Gupta, Kaveri Ajravat, Loveleen K. Brar, O. P. Pandey, Pandey Rajagopalan
Summary: This study focuses on the performance of Mn3O4-ZnO composite material in wastewater treatment and energy storage applications, and presents a detailed comparative analysis. Results show that the composite material with equal concentrations of Mn3O4 and ZnO exhibits excellent photocatalytic activity and high capacitance.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Chemistry, Multidisciplinary
Shiqi Cheng, Jin Yang, Shangying Qin, Li Huang, Yuanjin Xu, Yilin Wang
Summary: Three-dimensional reduced graphene oxide (3DrGO) and a flower-like zinc oxide (ZnO) crystal were prepared using a hydrothermal method. A stable dispersion of the 3DrGO-ZnO composite was formed and applied to modify a glassy carbon electrode for the detection of ascorbic acid (AA), dopamine (DA) and uric acid (UA). The 3DrGO-ZnO electrode exhibited enhanced electrocatalytic properties and could distinguish and enhance the differential pulse voltammetry signals of AA, DA and UA. The modified electrode showed potential for practical application in the analysis of real samples.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Physical
Xin Li, Lili Zhang, Zhiguo Wang, Shufang Wu, Jinxia Ma
Summary: Multiscale fibers were used to improve the photocatalytic and recycling properties of ZnO/cellulose composites. The ZnO flower/sheet ratio could be adjusted by the multiscale cellulose fibers, with an increasing nano-/micro- ratio leading to an increase in the ZnO flower/sheet ratio. The composite membrane with the highest ZnO flower/sheet ratio exhibited the best photocatalytic performance, while the composite membrane with a reasonable nano-/micro- ratio showed excellent wet strength.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Inorganic & Nuclear
Usman Saeed, Asim Jilani, Javed Iqbal, Hamad Al-Turaif
Summary: In this study, ternary nano photocatalysts were investigated for their ability to degrade methylene blue dye. The results showed that the rGO@g-C3N4/ZnO catalyst had the highest photocatalytic degradation efficiency under visible light. The experimental conditions, such as catalyst dosage and irradiation time, were found to affect the degradation efficiency. A theoretical prediction and a preliminary equation were proposed to explain the degradation mechanism. The findings of this study have significant implications for the application of nanocatalysts in organic dye degradation.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Chenxu Miao, Xianzhi Yin, Genglei Xia, Kai Zhu, Ke Ye, Qian Wang, Jun Yan, Dianxue Cao, Guiling Wang
Summary: The study shows that CoSe2/RGO composites exhibit excellent specific capacitance and durability, with the best performance achieved at 35.2 wt% RGO content. The hybrid supercapacitor using solid-state materials broadens the voltage window and enhances energy density.
APPLIED SURFACE SCIENCE
(2021)
