Article
Chemistry, Physical
Xinwei Li, Yu Huang, Wingkei Ho, Shuwen Han, Pengge Wang, Shuncheng Lee, Zhuozhi Zhang
Summary: A Sv-ZnIn2S4-8/g-C3N4 (Sv-ZIS/CN) composite decorated with sulfur vacancies (Sv) was designed and fabricated for HCHO elimination. The in-situ growth of ZnIn2S4 (ZIS) on g-C3N4 (CN) led to the construction of heterojunction interface and generation of S-vacancies. The photocatalytic HCHO oxidation in the Sv-ZIS/5CN sample is kinetically favorable in the presence of abundant hydroxyl radicals (•OH) engaged in the successive C-H bond scission route.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Giovanni Di Liberto, Sergio Tosoni, Gianfranco Pacchioni
Summary: Composite materials formed by titania and graphitic C3N4, such as C3N4/TiO2 and C3N4/SrTiO3/TiO2 heterojunctions, have attracted significant interest as efficient photocatalysts. The different behavior of the two heterojunctions can be rationalized based on density functional theory calculations, showing a reversal in the interface dipole and junction nature in the ternary system.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Green & Sustainable Science & Technology
Meng-Wei Zheng, Yu-Rou Lin, Shou-Heng Liu
Summary: This study synthesized a multifunctional indoor coating material that is capable of photodegrading formaldehyde and regulating humidity, which is of great importance to indoor air quality.
MATERIALS TODAY SUSTAINABILITY
(2023)
Article
Engineering, Environmental
Xiaoyu Jin, Yuliang Wu, Yingfei Wang, Zili Lin, Danluo Liang, Xiaoshan Zheng, Dandan Wei, Haijin Liu, Wenying Lv, Guoguang Liu
Summary: A novel carbon quantum dots-modified reduced ultrathin g-C3N4 photocatalyst was synthesized, displaying remarkable photocatalytic performance with a broad-spectrum response, high removal efficiency for pharmaceuticals and personal care products.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Materials Science, Multidisciplinary
Shaofeng Zhou, Ying Zhang, Jialin Chen, Jin Yan, Jin Huang, Qiaoxin Zhang, Guizhe Zhao, Yaqing Liu
Summary: This study prepared few-layer fluorinated graphene nanosheets and filled them into a fluoro-carbon resin/epoxy resin blended matrix to prepare a nanocomposite coating with outstanding wear and corrosion resistance. The coating exhibited excellent dispersion and interfacial compatibility, and significantly reduced the friction coefficient and wear rate under dry friction and simulated seawater friction conditions. The coating also demonstrated excellent corrosion resistance and barrier corrosion protection.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Xinxin Chen, Changzhao Chen, Jiyuan Zang
Summary: In this study, a composite photocatalyst was developed by modifying g-C3N4 nanosheets with carbon quantum dots (CQDs) and combining them with spherical MoS2 nanoparticles. The results showed that the CCN/MS composite catalyst exhibited excellent degradation performance, achieving a 93% degradation rate for MO. Furthermore, a competitive mechanism between MO and MB during degradation was discovered.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Engineering, Environmental
Xinle Geng, Li Wang, Lu Zhang, Hui Wang, Yiyin Peng, Zhaoyong Bian
Summary: A novel ZnO/g-C3N4 heterojunction catalyst was prepared and applied for H2O2 production and in situ sterilization in natural waters under simulated sunlight. The catalyst with 10% ZnO showed the best performance, achieving high H2O2 production efficiency and bactericidal rate through sunlight excitation. The study may provide new insights for utilizing sunlight for in situ disinfection and cleaning treatment of natural water bodies.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Carlos J. Pestana, Jianing Hui, Dolores Camacho-Munoz, Christine Edwards, Peter K. J. Robertson, John. T. S. Irvine, Linda A. Lawton
Summary: Cyanobacteria and their toxins pose a threat to drinking water safety, and using solar light active photocatalysts is a low-cost method to purify water. A recycled glass bead method was used to obtain TiO2 and g-C3N4 coated floating photocatalysts. The results showed that g-C3N4 and TiO2+g-C3N4 coated beads were more effective than TiO2 coated beads in removing cyanotoxins from water.
Article
Engineering, Chemical
Wei Gan, Jun Guo, Xucheng Fu, Juncheng Jin, Miao Zhang, Ruixin Chen, Chunsheng Ding, Yuqing Lu, Jianrou Li, Zhaoqi Sun
Summary: The development of efficient photocatalysts for solving environmental pollution and energy crisis is still challenging. In this study, a novel oxygen-doped g-C3N4 modified g-C3N4/TiO2 photocatalyst was prepared, which showed enhanced photocatalytic activity and efficient degradation of gatifloxacin.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Physical
Chechia Hu, Wei-Fan Tsai, Wei-Han Wei, Kun-Yi Andrew Lin, Miao-Ting Liu, Keizo Nakagawa
Summary: This study demonstrates the use of hydroxyl-modified/Na-intercalated g-C3N4 as an effective material for the removal of gaseous formaldehyde. The modification significantly increased the HCHO removal efficiency and allowed for at least three cycles of reuse. The modified g-C3N4 showed a removal capacity for HCHO that was twice that of bare g-C3N4, making it a promising material for indoor formaldehyde removal.
Article
Environmental Sciences
Vu Quang Hieu, Truong Chi Lam, Afrasyab Khan, Thu-Thao Thi Vo, Thanh-Quang Nguyen, Van Dat Doan, Dai Lam Tran, Van Thuan Le, Vy Anh Tran
Summary: The research utilized the titanium atom from Ti3C2 MXene to develop TiO2, forming a close heterostructure with semiconductors, while the high surface area of amorphous g-C3N4 contributed to light harvesting during photocatalytic activity. The optimized TTC-450 heterostructure demonstrated a higher H-2 generation efficiency compared to pure g-C3N4 and other samples.
Article
Chemistry, Multidisciplinary
Qianqian Shang, Yuzhen Fang, Xingliang Yin, Xiangjin Kong
Summary: The highly-efficient TiO2{001}/g-C3N4 (TCN) heterostructures were successfully fabricated using an in situ ethanol-thermal method, with the g-C3N4 structure evolving from bulk to nanosheets, nanocrystals, and quantum dots as the synthesis temperature increased. The optimal TCN-2 heterostructure showed excellent photocatalytic activity for H-2 evolution under visible-light irradiation, attributed to the enhanced crystallinity of TiO2{001} nanosheets and the large surface area g-C3N4 nanocrystals.
Article
Engineering, Environmental
Sweta Gahlot, Frederic Dappozze, Shashank Mishra, Chantal Guillard
Summary: Utilizing a high surface area g-C3N4 for photocatalytic degradation of wastewater yields positive results, with performance increasing linearly with concentration and irradiance. For the photocatalytic degradation of HCOOH, the photonic efficiency is around 5.5%.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Maria Leonor Matias, Ana S. Reis-Machado, Joana Rodrigues, Tomas Calmeiro, Jonas Deuermeier, Ana Pimentel, Elvira Fortunato, Rodrigo Martins, Daniela Nunes
Summary: A graphitic carbon nitride/titanium dioxide (g-C3N4/TiO2) heterostructure was synthesized through a fast and simple microwave-assisted method, and it showed excellent photocatalytic activity for the degradation of a recalcitrant azo dye under solar simulating light. The 30% g-C3N4/TiO2 heterostructure exhibited the best performance.
Article
Materials Science, Paper & Wood
Wenjun Li, Hui Zhang, Wendou Chen, Limeng Yang, Hailiang Wu, Ningtao Mao
Summary: This study demonstrated the recycling and efficient utilization of powdered photocatalysts by loading them on supporting materials. The construction of a g-C3N4-TiO2 heterojunction on cotton fibers improved photocatalytic performance, with the cotton increasing the energy band gap of the nanocomposites. The self-cleaning experiments showed the modified cotton fabrics could effectively remove organic contaminants multiple times.
Article
Thermodynamics
Jiajia Xu, Pengyu Guo, Qiangling Duan, Xinchun Yu, Lin Zhang, Yujun Liu, Qingsong Wang
APPLIED THERMAL ENGINEERING
(2020)
Article
Chemistry, Multidisciplinary
Yupeng Song, Feng Zhou, Yongheng Chai, Su Zhan
Summary: The study indicates that the RGO/Bi2WO6 composite material shows potential applications in marine anti-pollution, with its microsphere structure demonstrating a higher sterilization rate. By improving charge separation efficiency and enhancing light utilization, it exhibits excellent performance.
RESEARCH ON CHEMICAL INTERMEDIATES
(2021)
Article
Chemistry, Physical
Ning Su, Feng Zhou
Summary: Improving the antimicrobial performance of surface coatings on ships in the complex marine environment is a pressing issue. Photocatalytic materials like BiOIO3 are used to enhance the sterilization performance of fluorocarbon resin coatings, showing significantly improved results in experimental tests.
CHEMICAL PHYSICS LETTERS
(2021)
Article
Environmental Sciences
Fengguang Wang, Feng Zhou, Su Zhan, Qiuchen He, Yupeng Song, Chenglin Zhang, Jianfu Lai
Summary: This study prepared petal-like microspheres with silver nanoparticles, and the 0.7% Ag/Bi2O2CO3 composite photocatalyst exhibited excellent bacterial removal efficiency and high photogenerated carrier separation efficiency under visible light irradiation, achieving a sterilization rate of 95%.
ENVIRONMENTAL RESEARCH
(2021)
Article
Environmental Sciences
Peng Xing, Feng Zhou, Su Zhan
Summary: The research finds that vacancies can enhance photocatalytic activity, but may not be suitable for reactions in seawater. The addition of ZIF-8 can reduce N vacancies in g-C3N4 and improve photocatalytic activity. Heteroatoms in seawater can compete with proton reduction in catalytic reactions.
ENVIRONMENTAL RESEARCH
(2021)
Article
Environmental Sciences
Chenglin Zhang, Feng Zhou, Su Zhan, Yupeng Song, Fengguang Wang, Jianfu Lai
Summary: By synthesizing H2O2 through photocatalysis in seawater, the efficiency of inactivating marine microorganisms can be increased, expanding the application of photocatalytic technology in the field of marine antifouling.
ENVIRONMENTAL RESEARCH
(2021)
Article
Engineering, Chemical
Song Wang, Jingjing Tong, Liying Cui, Peng Zhang, Feng Zhou
Summary: The study successfully prepared LSN-MC dual-phase membrane for CO2 capture, demonstrating good chemical compatibility and stability, high CO2 permeability at high temperature, and stable operation in simulated flue gas.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Qiuchen He, Su Zhan, Feng Zhou
Summary: In this study, a tandem reaction of electrocatalytic synthesis and photocatalytic decomposition of hydrogen peroxide (H2O2) was constructed to improve the efficiency of marine microorganism inactivation. Experimental results showed that the tandem reaction was significantly more effective in sterilizing marine bacteria compared to single electrocatalytic or photocatalytic methods. Furthermore, boron doping was found to enhance the photocatalytic decomposition performance of H2O2.
Article
Chemistry, Physical
Minhe Li, Feng Zhou, Su Zhan
Summary: In this study, a photocatalyst Zn2SnO4 was produced and calcined at different temperatures. Characterization of the prepared photocatalyst was conducted using XRD, SEM, UV-Vis DRS, FT-IR and XPS. The antibacterial properties of the Zn2SnO4 coating were evaluated after replacing the fluorocarbon resin coating with the photocatalyst. The results showed that the sterilization rate of Zn2SnO4 was highest at 500 degrees C calcination, and the mechanism of improving photocatalytic efficiency was proposed. This research provides new insights into the development of marine antifouling coatings and has significant implications for treating marine ballast water.
REACTION KINETICS MECHANISMS AND CATALYSIS
(2022)
Article
Chemistry, Physical
Chenglin Zhang, Qiuchen He, Su Zhan, Feng Zhou
Summary: This study established a ballast water treatment system that can efficiently inactivate marine microorganisms without the need for additional sacrificial agents. The introduction of AgQDs improved the photocatalytic sterilization efficiency, and it was found that AgQDs play multiple roles in facilitating charge transportation and generating robust oxygen species for bacterial inactivation.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
Article
Chemistry, Physical
Yanzhu Wang, Feng Zhou, Su Zhan, Jiahong Sun, Ruichao Xu
Summary: AgI/Bi2O2CO3 composite photocatalyst was prepared by in situ deposition and characterized by XRD, SEM, TEM, XPS, and UV-Vis diffuse reflectance spectroscopy (DRS). The sterilization performance of a fluorocarbon resin coating (PEVE) modified with photocatalysts of different composite proportions for ship ballast water was evaluated. The results showed that AgI/Bi2O2CO3-0.3 exhibited the best photocatalytic sterilization performance under simulated sunlight irradiation, with a sterilization rate of 98%. The AgI/Bi2O2CO3 heterojunction was successfully synthesized and the mechanism of photocatalytic sterilization involving holes as the main active species was explored. This paper provides a new idea for ship ballast water treatment.
REACTION KINETICS MECHANISMS AND CATALYSIS
(2023)
Article
Chemistry, Physical
Ruichao Xu, Yang Qu, Ziming Zhao, Yanzhu Wang, Minhe Li, Feng Zhou
Summary: Due to the increase in global power consumption, energy supply shortage and global warming have become the main obstacles to social and economic development. Cleaner and greener energy, represented by solar energy, is being gradually developed in today's society to alleviate the current energy shortage. Semiconductor photocatalytic water splitting technology is one of the most important methods used for this purpose. However, global freshwater resources are scarce, and designing and synthesizing proper photocatalysts for seawater splitting has been considered as one of the most effective approaches to address the shortage of freshwater resources and utilize solar energy. In this study, quaternion Pt/Co3O4-NiS/STO composites were successfully synthesized and used for photocatalytic water splitting in a seawater system. The introduction of Pt and Co3O4 cocatalysts greatly improved the separation efficiency of photogenerated electrons and holes. Additionally, the surface modification of NiS enabled the photocatalysts to resist the toxicity of chloride ions in seawater. The oxygen yield for seawater splitting was nearly double that of untreated samples and approximately half of that in pure water. This work demonstrated the feasibility of seawater splitting and provided guidance for future development of other photocatalytic seawater splitting systems.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Engineering, Environmental
Fengguang Wang, Su Zhan, Feng Zhou, Qiuchen He, Chenglin Zhang, Jianfu Lai, Yupeng Song
Summary: Studies have shown the favorable application of Bi-based semiconductor photocatalysts in environmental protection. This study synthesized Bi-based photocatalysts using the glycol-assisted solvothermal method and evaluated their effectiveness in purifying ship's ballast water and killing bacteria. The results demonstrated that the in-situ generation of Bi nanospherical particles within nanosheets of flower-ball-like (BiO)2CO3 resulted in the preparation of 3D-3D Bi/(BiO)2CO3 heterojunctions. The combined surface plasmon resonance effects of semimetallic Bi and (BiO)2CO3 promoted the photocatalytic killing of bacteria in ship's ballast water.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Fengguang Wang, Yupeng Song, Qiuchen He, Chenglin Zhang, Jianfu Lai, Su Zhan, Feng Zhou
Summary: Through surface modification of Bi2O2CO3 to improve its photocatalytic activity, g-C3N4/BOC heterojunction photocatalysts were successfully prepared, and their photocatalytic sterilisation activity was verified under simulated sunlight irradiation, showing excellent environmental catalytic stability. The 10CNB composite photocatalyst exhibited the highest photocatalytic sterilization activity, with a 5-fold increase compared to pure BOC photocatalyst and a 3.4-fold increase compared to pure g-C3N4 photocatalyst.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
Chenglin Zhang, Yupeng Song, Qiuchen He, Fengguang Wang, Su Zhan, Feng Zhou
Summary: This study successfully synthesized BiQDs/BiVO4, with 3%BiQDs/BiVO4 exhibiting the highest photocatalytic sterilization efficiency under visible light irradiation with low concentration of H2O2 present in real seawater. The combination of BiQDs with BiVO4 showed a great potential for efficient decontamination of ballast water.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)