Article
Environmental Sciences
Cheng Gan, Biyang Tuo, Jianli Wang, Yun Tang, Guanghua Nie, Zhengbin Deng
Summary: Ti-doped Bi2O3 photocatalytic materials with different compositions were prepared by chemical solution decomposition method. The degradation of reactive brilliant blue KN-R was studied and the materials were characterized by various detection methods. The results showed that Ti/Bi2O3 had the best degradation effect on reactive brilliant blue KN-R, with a degradation rate of 93.27%. Doping Ti enhanced the visible light absorption and electron separation and transfer capabilities of Bi2O3, leading to improved photocatalytic performance.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Ines M. F. Cardoso, Rita M. F. Cardoso, Luis Pinto da Silva, Joaquim C. G. Esteves da Silva
Summary: UV-based advanced oxidation processes (AOPs) with a titanium(IV)-doped carbon dot catalyst were developed for the decomposition of an anthraquinone textile dye. The presence of the catalyst significantly increased the reaction rate.
Article
Environmental Sciences
Mikaely Lizandra Moreira de Assis, Elmar Damasceno Junior, Janiele Mayara Ferreira de Almeida, Isabel do Nascimento Silva, Rodrigo Victor Barbosa, Lamara Maciel dos Santos, Elizete Faustino Dias, Nedja Suely Fernandes, Carlos Alberto Martinez-Huitle
Summary: The study investigated the photocatalytic discoloration of industrial dyes using composites of TiO2 and natural palygorskite. The experimental design and conditions significantly impacted the discoloration results, showing promising potential for application in wastewater treatment. The method demonstrated effective color removal and potential for further research in environmental remediation.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Materials Science, Multidisciplinary
Ashwini S. Gadge, S. Y. Janbandhu, G. K. Sukhadeve, Rahul Kumar, C. D. Gajbhiye, R. S. Gedam
Summary: This study prepared titanium dioxide (TiO2) nanoparticles through a simple sol-gel process and calcined them at various temperatures to investigate their thermal, physical, morphological, optical, and photocatalytic properties. The synthesized materials' thermal properties were analyzed through TGA and DTA studies, while XRD and Raman analyses confirmed their crystallinity, phase transformation, and crystallite size. Textural parameters were calculated using the BET and BJH methods. Changes in structure and morphology with calcination temperatures were explored through FTIR and SEM analyses, while the EDS pattern confirmed the elemental composition. The HR-TEM study revealed the nanoparticles' average size and spherical shape, and XPS spectra demonstrated their elemental state. UV-vis and PL studies confirmed the increase in particle size with calcination temperatures. The photocatalytic efficiency of the samples was tested, and a sample calcined at 400℃ for 2 h showed an improved degradation efficiency of 94.96% for 10 ppm MB dye.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Ceramics
Oyku Icin, Cekdar Vakifahmetoglu
Summary: Coating PDC nanobeads with titania and subsequent photodegradation under UV can significantly enhance the dye removal efficiency, reaching up to 97%. High regeneration efficiencies above 92% are observed for titania-coated nanobeads even after the third cycle of reuse.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Emmanuel Kweinor Tetteh, Sudesh Rathilal
Summary: The study introduces a hybridized photocatalyst for wastewater treatment, showing promising results in the photodegradation of bromophenol blue. The nanocomposite of activated carbon and clinoptilolite demonstrated synergistic effects in removing COD and color from wastewater, with Langmuir adsorption isotherms and second-order kinetic models indicating optimal performance at a 4 g load.Z-TiO2 exhibited a high photocatalytic efficiency, decomposing over 80% of BPB (COD) with reaction rate constant (k) and coefficient of determination (R-2) values of 5.63 x 10(-4) min(-1) and 0.989, respectively.
Article
Materials Science, Ceramics
E. Burak Ertus, Cekdar Vakifahmetoglu, Abdullah Oztuerk
Summary: The research found that porous glass embedded with titanium dioxide has a higher efficiency in methylene blue removal, mainly due to its high specific surface area and dispersion of nano-sized anatase TiO2 crystallites.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Biochemistry & Molecular Biology
Nurul Natasha Mohammad Jafri, Juhana Jaafar, Nur Hashimah Alias, Sadaki Samitsu, Farhana Aziz, Wan Norharyati Wan Salleh, Mohd Zamri Mohd Yusop, Mohd Hafiz Dzarfan Othman, Mukhlis A. Rahman, Ahmad Fauzi Ismail, Takeshi Matsuura, Arun M. Isloor
Summary: A study synthesized titanium dioxide hollow nanofibers with enhanced photocatalytic properties through template synthesis method and calcination process. The hollow nanofibers showed superior performance in photocatalytic degradation of MB dye, achieving a degradation rate of 95.2% after 4 hours of UV irradiation.
Article
Chemistry, Physical
R. R. Mansurov, V. S. Zverev, A. P. Safronov
Summary: In this study, a theoretical model was developed and verified by experimental studies to describe the diffusion-limited photocatalytic degradation of organic dye in aqueous solution using composite hydrogel filament with embedded photocatalyst nanoparticles. The experimental results showed that the rate of dye concentration decay can be fitted by an exponential decay function with a significant kinetic constant.
JOURNAL OF CATALYSIS
(2022)
Article
Green & Sustainable Science & Technology
Fatine Drhimer, Maryem Rahmani, Boutaina Regraguy, Souad El Hajjaji, Jamal Mabrouki, Abdeltif Amrane, Florence Fourcade, Aymen Amine Assadi
Summary: Food coloring has become a significant source of water pollution, particularly Brilliant blue (BB) dye in the food industry. Heterogeneous photocatalysis using titanium dioxide was employed to treat this pollution. The study demonstrated the effectiveness of photodegradation of BB dye using a photoreactor at both laboratory and pilot scales, achieving high degradation rates. This research highlights the potential of photocatalysis as a promising technique for water purification.
Article
Engineering, Environmental
Yi Chen, Shengrui Tong, Weiran Li, Yanping Liu, Fang Tan, Maofa Ge, Xiaofeng Xie, Jing Sun
Summary: This study demonstrated the formation of H2SO4 aerosols (SA(g-H2SO4)) in yields of 10.10-32.64% during the photocatalysis process of SO2 by TiO2 under various relative humidity conditions, with gaseous (OH)-O-center dot and H2O2 identified as the determining factors. The role of the released gaseous (OH)-O-center dot and H2O2 in atmospheric chemistry was proven to be significant, highlighting the impact of photocatalytic materials on secondary pollution.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Environmental Sciences
Devagi Kanakaraju, Muhamad Akif Aizuddin Jasni, Andrea Pace, Muhamad Hazim Ya
Summary: The Cu/TiO2/FA composite was optimized for the removal of the model dye pollutant methyl orange under visible light irradiation using response surface methodology and Box-Behnken experimental design. The study considered three independent variables and achieved a 99.91% removal rate under the optimal operating conditions. The results support the hypothesis of a combined and synergic adsorption-photocatalytic degradation process for pollutant removal.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Applied
Emerson F. M. da Silva, Erika R. B. Ximenes, Leticia B. de Sales, Erica J. M. Dantas, Evelle D. C. Oliveira, Thiago B. Simoes, Andre T. S. Ribeiro, Oihane Sanz, Giovanna Machado, Luciano C. Almeida
Summary: In this study, a monolithic structured photoreactor with TiO2 immobilized on a high surface area calcined brass was used for the photodegradation of Reactive Black 5 textile dye. The system demonstrated efficient degradation of the dye under specific conditions, showing promise as a feasible alternative for textile effluent treatment.
Article
Green & Sustainable Science & Technology
Tianyu Yang, Yu Liu, Guangda Xia, Xiaodong Zhu, Yu Zhao
Summary: The utilization of the multilevel pore structure of natural wood for synthesizing titanium dioxide resulted in a material with improved adsorption and photocatalytic properties. Characterization using SEM, TEM, and X-ray diffraction revealed the presence of anatase and rutile phases in the prepared titanium dioxide.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Chemistry, Physical
Alejandra Romero-Moran, Jose L. Sanchez-Salas, Joel Molina-Reyes
Summary: The study established the influence of the crystalline phase and agglomeration degree of TiO2 nanoparticles on photocatalytic hydroxyl radical formation and bacterial inactivation in TiO2/SiO2 composite coatings. A relationship between hydroxyl radicals' formation and charge carrier transfer mechanism between defect levels in SiO2 and TiO2 embedded nanoparticles was established through a simple spectroscopic method. This correlation complements the lack of mechanisms behind the photocatalytic activity in TiO2/SiO2 composites.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Materials Science, Multidisciplinary
Hua Lv, Xinxin Wu, Yumin Liu, Yafei Cao, Hao Ren
Article
Materials Science, Ceramics
Changwei Dun, Guoxi Xi, Xiaoying Heng, Ye Zhang, Yumin Liu, Xinyan Xing
CERAMICS INTERNATIONAL
(2019)
Article
Chemistry, Physical
Yumin Liu, Zhiyuan Gong, Yinde Xie, Hua Lv, Bing Zhang
APPLIED SURFACE SCIENCE
(2020)
Article
Chemistry, Physical
Yumin Liu, Zhiyuan Gong, Hua Lv, Hao Ren, Xinyan Xing
APPLIED SURFACE SCIENCE
(2020)
Article
Chemistry, Physical
Yumin Liu, Lanlan Wang, Hua Lv, Xinxin Wu, Xinyan Xing, Shili Song
Summary: The construction of Mn0.5Cd0.5S solid solution decorated with MoO2 and Au nanoparticles significantly enhances the photocatalytic hydrogen production activity under simulated sunlight conditions, showing promising applications in solar-to-fuel conversion.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Ceramics
Tianjun Ni, Zhibin Yang, Yafei Cao, Hua Lv, Yumin Liu
Summary: A noble-metal-free MoS2/g-C3N4/ZnIn2S4 ternary heterostructure with a hierarchical flower-like architecture was developed for efficient hydrogen generation from photocatalytic water splitting. The optimized nanocomposite displayed significantly enhanced hydrogen evolution activity, attributed to multichannel charge transfer and suitable band-edge alignments in the composites, enabling efficient electron-hole separation and high photoactivity. Moreover, the ternary heterostructure showed promising stability during the photoreaction process, making it suitable for practical applications in solar hydrogen production.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Hua Lv, Yuanfang Kong, Yumin Liu, Zhiyuan Gong, Xinyan Xing
Summary: Constructing heterojunction photocatalytic systems with highly spatial charge separation, strong photoredox ability, and rapid surface reaction remains a significant challenge. In this study, a novel hierarchically direct Z-scheme Mn0.5Cd0.5S/CdWO4 heterojunction photocatalyst, decorated with hollow CoSx polyhedrons, is constructed using a simple sonochemical approach and subsequent in situ deposition route. The resulting Mn0.5Cd0.5S/CdWO4/CoSx ternary composite exhibits significantly enhanced photoactivity for H2 generation compared to other samples, thanks to its efficient charge transfer channels, strong photoredox ability, and the unique hollow structure of CoSx polyhedrons that provides abundant surface-active sites and improves light-harvesting capacity.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Chemical
Yumin Liu, Hao Wu, Hua Lv, Xinxin Wu
Summary: A novel ternary nanocomposite, MoO2 decorated Mn0.5Cd0.5S/Cu2O p-n heterojunction, exhibited an impressive photocatalytic H-2 evolution rate under simulated solar light irradiation, demonstrating significant potential for boosting hydrogen generation activity.
Article
Chemistry, Physical
Hua Lv, Hao Wu, Xinxin Wu, JinZe Zheng, Yumin Liu
Summary: A novel WS2/Mn0.5Cd0.5S/CuInS2 hierarchical tandem p-n heterostructure was constructed based on energy band engineering theory, achieving effective charge separation and sufficient light harvesting for enhanced photocatalytic hydrogen production.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Hua Lv, Yuanfang Kong, Zhiyuan Gong, JinZe Zheng, Yumin Liu, Gongke Wang
Summary: This study developed a Mn0.5Cd0.5S catalyst with dual cocatalysts, which improved the photocatalytic water splitting performance by reducing the reaction energy barrier and suppressing charge recombination. The results showed that the Mn0.5Cd0.5S/CB/CuS hierarchical multiheterojunction catalyst exhibited excellent hydrogen generation efficiency and stability under simulated solar light irradiation.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Inorganic & Nuclear
Yumin Liu, Xinxin Wu, Hua Lv, Yafei Cao, Hao Ren
DALTON TRANSACTIONS
(2019)
Article
Engineering, Chemical
Arvin Sohrabi, Mousa Meratizaman, Shuli Liu
Summary: This paper simulates and discusses possible solutions to improve the economic and technical performances of a battery-less renewable energy-powered BWRO system under real climate conditions. The study finds that the photovoltaic-based system performs better in terms of specific energy consumption and unused energy ratio.
Article
Engineering, Chemical
Chunlan Pan, Xiaoyin Hu, Vishal Goyal, Theyab R. Alsenani, Salem Alkhalaf, Tamim Alkhalifah, Fahad Alturise, Hamad Almujibah, H. Elhosiny Ali
Summary: This paper introduces a novel waste heat recovery method using the hot flue gas from a ship's engine to produce liquefied hydrogen while meeting the ship's air-conditioning requirement. A comprehensive feasibility assessment is conducted and an artificial neural network with a multiobjective grey wolf optimization method is used for optimization. The findings indicate the highest mean sensitivity index of the flash temperature and the best optimization scenario for exergy efficiency, CO2 emission reduction, and liquefied hydrogen cost.
Article
Engineering, Chemical
Daniele Chinello, Jan Post, Louis C. P. M. de Smet
Summary: In this study, PVDF-based anion-exchange membranes were designed to selectively separate nitrate from chloride. Experimental data showed that increasing the concentration of PVDF enhanced nitrate transport but also increased the membrane electrical resistance. The selectivity of nitrate was found to be independent of the membrane thickness and mainly driven by the increased affinity between the anion and the membrane.
Article
Engineering, Chemical
Umar Noor, Muhammad Fayyaz Farid, Ammara Sharif, Amna Saleem, Zubair Nabi, Muhammad Furqan Mughal, Kiran Abbas, Toheed Ahmed
Summary: Global water scarcity is increasing, and water desalination is an important solution. Multifunctional advanced materials, such as membrane materials and solar-driven desalination, play a crucial role in water desalination. Additionally, these materials can be used for water purification, wastewater treatment, and pollutant elimination.
Article
Engineering, Chemical
Emrah Gumus
Summary: With growing global concerns about climate change and environmental impacts, the use of nuclear energy in naval vessels offers a cleaner and more efficient solution to reduce emissions and address water and energy supply challenges. This study explores a novel system that combines a nuclear-driven supercritical carbon dioxide power cycle with reverse osmosis cogeneration to meet the water and electricity demands in maritime operations, enhancing the sustainability, efficiency, and self-sufficiency of naval vessels. The results indicate that the system has the potential to be a viable and effective solution for naval operations.
Article
Engineering, Chemical
Dao Thi Thanh Huyen, Saikat Sinha Ray, Young -Nam Kwon
Summary: This study focuses on the modification of a commercially available polyamide thin-film composite membrane with a zwitterionic material to enhance its fouling resistance. The modified membrane shows improved salt rejection and reduced permeability compared to the pristine membrane. Fouling tests demonstrate that the modified membrane has a lower fouling ratio and higher recovery ratio. The enhanced antifouling characteristics are attributed to the improved hydrophilicity resulting from the zwitterionic brushes and the salting-in effect.
Article
Engineering, Chemical
Niklas Koeller, Lukas Mankertz, Selina Finger, Christian J. Linnartz, Matthias Wessling
Summary: This study presents a methodology to scale up Flow-electrode Capacitive Deionization (FCDI) technology from lab-scale to pilot-scale systems. By increasing membrane area and using a stacking approach, the FCDI modules were successfully scaled up and achieved a salt transfer rate comparable to lab-scale systems. This provides a foundation for future assessments of energy demand and economics.
Article
Engineering, Chemical
Mona Gulied, Sifani Zavahir, Tasneem Elmakki, Hyunwoong Park, Guillermo Hijos Gago, Ho Kyong Shon, Dong Suk Han
Summary: This study introduces a novel hybrid system that combines direct contact membrane distillation (DCMD) and electrically switched ion exchange (ESIX) to facilitate seawater reverse osmosis (SWRO) brine enrichment and selective lithium recovery.
Article
Engineering, Chemical
Zhiqiang Zhang, Ruifeng Deng, Jiao Zhang, Lu She, Guangfeng Wei, Renyong Jia, Pengyu Xiang, Siqing Xia
Summary: A transmembrane electro-chemisorption system with authigenic acid and base was developed for enhancing ammonia recovery from strong ammonia wastewater. The system efficiently transformed ammonium into free ammonia, which was then adsorbed and recovered through transmembrane chemisorption. This system yielded pure (NH4)2SO4 product and produced valuable byproducts of pure hydrogen and oxygen. Higher applied voltage resulted in better ammonia recovery.
Article
Engineering, Chemical
Alena Popova, Sandrine Boivin, Takuji Shintani, Takahiro Fujioka
Summary: This study aimed to produce a high-integrity RO membrane by forming a polyamide skin layer on a TE support layer, in order to enhance the integrity of the membrane and improve the microbiological safety of potable water reuse.
Article
Engineering, Chemical
Sanjana Yagnambhatt, Saber Khanmohammadi, Jonathan Maisonneuve
Summary: This study investigates the concept of using heat to enhance reverse osmosis (RO) desalination. The effect of temperature on water permeate flux, specific energy, permeate quality, and applied operating pressures is evaluated using an analytical model. The results suggest that under specific conditions, the tradeoff between savings in mechanical pump work and thermal energy input in thermally-enhanced RO can be favorable, leading to overall energy savings.
Article
Engineering, Chemical
Jiangju Si, Chenrui Xue, Shun Li, Linchao Yang, Weiwei Li, Jie Yang, Jihong Lan, Ningbo Sun
Summary: To meet the huge demand for lithium resources, there is an urgent need to develop a new efficient technology for lithium recovery from salt-lake brines. In this study, a selective membrane capacitive deionization system is reported, which achieves high lithium recovery capacity and rate through the use of materials with efficient intercalated pseudo-capacitance and a high specific area porous carbon. The use of a modified thin-coated membrane allows for selective Li+ recovery, and adjusting the concentrations of Li+ and Mg2+ in the feed solution enables higher Li+/Mg2+ selectivity.
Article
Engineering, Chemical
Mohamed R. Salem, R. Y. Sakr, Ghazy M. R. Assassa, Omar A. Aly
Summary: This research proposes a new method of using wasted thermal energies as an additional heating source for solar still distillation units (SSDUs) to increase productivity and reduce pollution and global warming. By testing two SSDUs, the study shows that heating airflow can raise temperatures, enhance freshwater production, and improve system thermal efficiency.
Article
Engineering, Chemical
Qimeng Sun, Miao Sun, Linyan Yang, Yuan Gao, Xinghai Zhou, Lihua Lyu, Chunyan Wei
Summary: This study presents an innovative design and fabrication of a fabric-based conical roll (FCR) evaporator, which enables low-temperature evaporation and achieves high evaporation efficiency with excellent thermal management ability. The evaporator has demonstrated advanced light-harvesting capability and can produce freshwater that meets drinking water standards, showing great potential for applications in desalination and sewage treatment.
Article
Engineering, Chemical
Yidong Zhang, Wangfang Deng, Meiyan Wu, Chao Liu, Guang Yu, Qiu Cui, Pedram Fatehi, Chunlin Xu, Bin Li
Summary: In this study, a novel polydopamine-functionalized lignin-containing pulp foam evaporator with high-efficiency desalination and multi-contaminant adsorption capabilities was designed. The foam evaporator showed excellent light absorption, water absorption, thermal conductivity, and chelation abilities, allowing for solar evaporation and contaminant adsorption synergistically. It also exhibited potential applications in metal ion concentration and contaminated seawater treatments, and demonstrated superior biodegradability compared to poly-styrene foam. This foam material holds promise for developing multifunctional photo-thermal systems for solar-driven water purification.
