Article
Chemistry, Physical
Naime AttariKhasraghi, Karim Zare, Ali Mehrizad, Nasser Modirshahla, Mohammad A. Behnajady
Summary: The CdS/g-C3N4 heterojunction photocatalyst supported on 4A zeolite was synthesized successfully and its physicochemical characteristics were assessed using various techniques. The nanocomposite showed a degradation efficiency of over 93% towards the Cefoperazone antibiotic under visible light irradiation.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Inorganic & Nuclear
Jie Zhou, Beibei Zhu, Lu Wang, Yan Bao, Guofeng Guan
Summary: A novel Z-scheme CdS/CeO2/g-C3N4 nanocomposite was synthesized by a solvothermal method and its photocatalytic activity for the degradation of phenol was evaluated. The nanocomposite exhibited remarkable photocatalytic activity with a degradation rate of 95 % in 180 min, surpassing that of pure CeO2 and CdS/CeO2. The enhanced photocatalytic ability is mainly attributed to the higher adsorption capacity of three-dimensional porous g-C3N4 and the three-dimensional space electric field formed by its complex with CdS and CeO2.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Ersu Lokcu, Nilay Kacar, Meltem Cayirli, Resat Can Ozden, Mustafa Anik
Summary: In this study, g-C3N4/rGO nanocomposites were synthesized and used as photocatalysts in Li-ion oxygen batteries, effectively reducing the charging potential under photoassisted conditions and improving battery performance.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Ersu Lokcu, Nilay Kacar, Meltem Cayirli, Resat Can Ozden, Mustafa Anik
Summary: In this study, g-C3N4/rGO nanocomposites were synthesized and effectively reduced the charging potential of Li-ion oxygen batteries, especially at higher current densities, considerably improving the cyclic discharge-charge performance.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Zhengru Zhu, Haiwen Xia, Hong Li
Summary: Nowadays, the concern over antibiotic residues in natural water environments has led to an urgent need for an environmentally friendly and highly efficient method to alleviate antibiotic contaminants. In this study, a Z-scheme CoMoO4/g-C3N4 binary heterojunction photocatalyst was synthesized to eliminate ciprofloxacin (CPF) contaminants in water. The obtained 20CoMO/CN samples showed a removal efficiency of 88% for CPF (20 mg/L) under visible light within 3 hours, which was 1.76 times and 2.09 times higher than that of CoMoO4 and g-C3N4, respectively. The formation of the Z-structure heterojunction promoted the separation of photogenerated electrons and holes, thereby improving the photocatalytic degradation efficiency of CPF.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Zhengru Zhu, Haiwen Xia, Xin Li, Hong Li
Summary: In this work, a novel 1D/2D rod-sheet shape Cu3Mo2O9/g-C3N4 heterojunction photocatalyst was fabricated to reduce ciprofloxacin contamination in water. The results showed that the Cu3Mo2O9/g-C3N4 heterojunction photocatalyst sample with 20% Cu3Mo2O9 eliminated 83% ciprofloxacin (20 mg/L) within 3 hours, which was 2.59 and 1.84 times higher than bare Cu3Mo2O9 and g-C3N4, respectively. Furthermore, the catalyst maintained excellent stability after five repetitive photo-degradation processes. Finally, the photocatalytic mechanism of enhancing CPFX activity by Cu3Mo2O9/g-C3N4 hetero-junction photocatalyst was deduced.
Article
Materials Science, Multidisciplinary
Soufiane Hmamouchi, Ahmed El Yacoubi, Mounir El Hezzat, Brahim Sallek, Brahim Chafik El Idrissi
Summary: In this study, graphitic carbon nitride (g-C3N4) was prepared via hydrothermal process, and various characterization methods were used to analyze the obtained sample. Methylene blue was selected as the pollutant to evaluate the photocatalytic performance of g-C3N4. The effects of solution pH, photocatalyst dose, and irradiation period on the photocatalytic performance were investigated using Response Surface Methodology. The optimal conditions, including 1.3 g/L of g-C3N4 photocatalyst, solution pH = 10.83, and irradiation time = 119.3 min, achieved a degradation efficiency of 86.58%. The principal active species involved in photocatalytic degradation were identified, and a potential mechanism was proposed. Additionally, the degradation kinetics followed a pseudo-second order kinetics.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Chemistry, Physical
Gohar Ali, Syed Jazib Abbas Zaidi, Muhammad Abdul Basit, Tae Joo Park
Summary: This study synthesized a ternary g-C3N4/rGO/SnO2 nanocomposite with excellent photocatalytic activity by effectively combining charge separation, multistep charge transfers, and higher visible-light absorbance. The nanocomposite demonstrated superior photocatalytic performance compared to pristine g-C3N4 and other composites due to the presence of a large number of nano/heterojunctions.
APPLIED SURFACE SCIENCE
(2021)
Article
Engineering, Chemical
Thurga Devi Munusamy, Sim Yee Chin, Md Maksudur Rahman Khan
Summary: In this study, Carbon@exfoliated g-C3N4 was fabricated through a hydrothermal approach and characterized in detail. The deposition of carbon enhanced the surface area and light absorption, with the optimized model revealing the highest hydrogen yield under specific conditions. Overall, the research serves as a benchmark for large scale photoreforming hydrogen production.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2022)
Article
Biotechnology & Applied Microbiology
Prasenna John, Khairiraihanna Johari, Nirmala Gnanasundaram, Arunagiri Appusamy, Murugesan Thanabalan
Summary: A visible light-driven TiO2/gC(3)N(4) photocatalyst was synthesized for the photodegradation of diclofenac, resulting in significantly improved degradation efficiency. The maximum efficiency reached 93.49%, and the catalyst showed satisfactory recyclability. The reaction followed a pseudo-first-order kinetics and resulted in ten intermediates.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Biotechnology & Applied Microbiology
Shimelis Kebede Kassahun, Zebene Kiflie, Hern Kim, Anteneh Fufa Baye
Summary: In this study, visible light active N-doped TiO2-SiO2 nanoparticles were synthesized for the photodegradation and mineralization of ciprofloxacin. The maximum CIP degradation efficiency of 88.45% and TOC removal efficiency of 75.18% were achieved under the optimum operating parameters. The adsorption isotherm and chemical kinetic studies were best fitted by Langmuir isotherm and pseudo-second-order kinetic models, respectively.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Engineering, Chemical
Said Al Mamari, Fakhr Eldin Suliman, Younghun Kim, Rengaraj Selvaraj
Summary: In this study, composites of graphitic carbon nitride (g-C3N4) and maple leaf CdS (CdS/g-C3N4) were synthesized by hydrothermal method. The charge-carrier interface for photocatalytic improvement of the CdS/g-C3N4 composites in different molar ratios was investigated using various characterization techniques. The material's high purity and well-defined nanostructures were found to significantly reduce the electron-hole recombination rate.
ADVANCED POWDER TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Minggui Wang, Min Wang, Fang Peng, Xiaohuan Sun, Jie Han
Summary: The g-C3N4/CdS hybrids with controllable CdS nanoparticles anchoring on g-C3N4 nanosheets were constructed, showing enhanced photocatalytic performance for hydrogen production and organic molecule degradation. The improved performance can be mainly attributed to the formed heterojunctions, two-dimensional layered structure, and high specific surface area.
FRONTIERS IN CHEMISTRY
(2021)
Article
Engineering, Chemical
Teeradech Senasu, Narubeth Lorwanishpaisarn, Khuanjit Hemavibool, Supinya Nijpanich, Narong Chanlek, Suwat Nanan
Summary: One vital topic in photocatalysis research is the development of novel nanomaterials for the degradation of toxic pollutants in water under visible light. In this study, a g-C3N4/BiOCl/CdS heterojunction was successfully synthesized via a hydrothermal method for complete removal of oxytetracycline (OTC) antibiotic in wastewater. The ternary heterostructure effectively suppressed electron-hole recombination, resulting in enhanced photocatalytic activity. Full removal of OTC was achieved under natural sunlight irradiation, following a first-order reaction with a maximum rate constant of 0.023 min-1. The prepared photocatalyst exhibited structural stability and high performance even after multiple uses. Photogenerated holes played a critical role in the OTC removal, while electrons and hydroxyl radicals had a subordinate role. Charge transfer at the interface of the ternary heterojunction was proposed to be of Z-scheme type. This work demonstrates a promising strategy for the complete detoxification of harmful OTC antibiotic in the environment by creating an enhanced photoactive ternary heterojunction.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Tengfei Wu, Jianfeng Huang, Gen Cheng, Yuwan Pang
Summary: Constructing heterojunction to improve photocatalytic efficiency has been widely explored, and in this work, CdS-based ternary composites were fabricated for efficient photocatalytic hydrogen evolution. The ternary nanocomposite exhibited significantly enhanced photocatalytic hydrogen generation rate under visible light irradiation, owing to the synergistic effects of different materials. This research demonstrated the great potential of CdS-based ternary heterostructures for boosting photocatalytic hydrogen production.
Article
Engineering, Environmental
Xingxing Hu, Lingjie Liu, Yanmeng Bi, Lu Li, Chunsheng Qiu, Jingjie Yu, Shaopo Wang
Summary: In this study, the impact of exogenous folate on the start-up process of single-stage partial nitritation-anammox (SPNA) was evaluated using two lab-scale reactors. The results showed that folate addition can enhance nitrogen removal rate, extracellular polymeric substances production, hydrazine oxidase and dehydrogenase activity, as well as the relative abundance of Candidatus Brocadia.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Shaocang He, Tingting Shen, Jing Sun, Haoqi Pan, Chenxu Sun, Tianpeng Li, Runyao Li, Enshan Zhang
Summary: A novel process of acid leaching neutralization was developed for the preparation of inorganic polymeric composite ferric aluminum silicate coagulant (CFAS) using solid waste coal gasification coarse slag (CGCS). The optimized preparation process was determined through single-factor experiment and the performance of CFAS was evaluated for domestic sewage treatment. The results showed that CFAS exhibited excellent coagulation ability and achieved significant removal efficiency for turbidity, ammonia nitrogen, and chemical oxygen demand.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Kinga Szatmari, Sandor Nemeth, Alex Kummer
Summary: In this article, a resilience-based reinforcement learning approach is proposed to address the potential thermal runaway issue in batch reactors. By calculating the resilience metric for reactors and utilizing Deep Q-learning to decide when to intervene in the system, resilient-based mitigation systems can be effectively developed.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Bingyou Jiang, Qi Yao, Mingqing Su, Jingjing Li, Kunlun Lu, Dawei Ding, Han Hong
Summary: This study investigates the inhibitory characteristics and mechanisms of ABC powder on coal powder explosion. The addition of ABC powder significantly decreases the maximum explosion pressure and can completely suppress coal dust explosions. The study also reveals the thermal decomposition characteristics and reaction kinetics of the mixed system.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Kubilay Bayramoglu, Mustafa Nuran
Summary: This study examines the feasibility of using pyrolytic oil from waste tires as fuel in diesel engines, and evaluates its energy, exergy, and sustainability. The results indicate that pyrolytic oil has potential as a renewable fuel source with relatively high thermal efficiency.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Xinru Duan, Yejia Lv, Jiaxing Hong, Jianzhong Wu, Jia Zhang, Yang Yue, Guangren Qian
Summary: This study successfully prepared a tube reactor with optimized catalyst formula, which showed good performance in removing dioxins and other pollutants in the experiments.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Jiaoyang Du, Xueming Dang, Xiaorong Gan, Xin Cui, Huimin Zhao
Summary: In this study, a photocatalyst-enzyme hybrid system was constructed, which solved the issue of enzyme inactivation caused by high concentration of H2O2 through photocatalytic in-situ H2O2 production, and improved the stability and catalytic efficiency of the enzyme. The effectiveness of the system in treating phenolic EDCs was confirmed through experiments.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Fu-Rong Xiu, Longsheng Zhan, Yingying Qi, Xinyue Lei, Jiali Wang, Haipeng Zhou, Wenting Shao
Summary: This study developed a synergetic and high-efficiency treatment of waste tantalum capacitors (WTCs) and polyvinyl chloride (PVC) using subcritical water process. The treatment significantly reduced the temperature and reaction time for metal tantalum recovery from WTCs, and improved the dechlorination efficiency of PVC. The optimized conditions resulted in 100% resin conversion efficiency of WTCs and 97.39% dechlorination efficiency of PVC. The interaction between decomposition products of WTCs and PVC produced a high level of benzoic acid.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Bingda Li, Jiaming Song, Yuting Li, Chaoying Meng, Shuxian Wang, Linghao Zong, Honggang Ye, Yishuai Jing, Feng Teng, Peng Hu, Haibo Fan, Guangde Chen, Xin Zhao
Summary: CdPS3 nanosheets, especially those exfoliated by sodium cholate, have shown highly efficient photocatalytic degradation performance. The strong dark adsorption and dye-sensitized photocatalytic properties of CdPS3 nanosheets contribute to high degradation efficiencies of various pollutants.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)
Article
Engineering, Environmental
Dongxu Ouyang, Yimei Pang, Bo Liu, Zhirong Wang
Summary: This study investigates the thermal runaway features of lithium-ion cells under tunnel conditions, considering different states of charge and tunnel ceilings. The results show that the tunnel visibility is affected by the smoke generated during thermal runaway, and the shape of the tunnel ceiling influences the temperature rise differently.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2024)