Article
Chemistry, Physical
Weiming Hao, Liang Zhao, Xiangqing Li, Lixia Qin, Sheng Han, Shi-Zhao Kang
Summary: An innovative photocatalytic system incorporating Cu nano clusters into mesoporous TiO2 nanoparticles has been designed to enhance the interaction between Cu co-catalyst and TiO2, as well as the stability of Cu co-catalyst, resulting in efficient H-2 production. Cu nanoclusters in the system play three roles: electron traps, active sites, and light harvesters. Embedding Cu co-catalyst into TiO2 matrix can significantly enhance the stability of Cu co-catalyst.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Multidisciplinary
Xinyun Yao, Jiaqi Zuo, Yu-Jue Wang, Ning-Ning Song, Huang-Hao Li, Kaipei Qiu
Summary: The photocatalytic degradation of PFOA presents a promising solution, with the designed mesoporous Sb2O3/TiO2 heterojunctions enhancing the efficiency and increasing the number of active sites for degradation. This leads to a significantly improved degradation rate and successful removal of PFOA.
FRONTIERS IN CHEMISTRY
(2021)
Article
Chemistry, Physical
A. Anson-Casaos, J. Hernandez-Ferrer, L. Vallan, H. Xie, M. Lira-Cantu, A. M. Benito, W. K. Maser
Summary: Various types of carbon dots synthesized using different methods show improved performance in photovoltaics and photoelectrochemical water splitting. Nitrogen carbon dots increase the open circuit voltage of perovskite solar cells, while thiol-functionalized and butyl chain-functionalized carbon dots exhibit better photocurrent in water splitting. The modified electrode is stable under continuous operation, with improved incident photon to current conversion efficiency.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Li-Yuan Zhang, Yan-Lin Han, Jin-Ju Yang, Sheng-Lian Deng, Bi-Yu Wang
Summary: Carbon quantum dots (CQDs) were prepared using citric acid as a carbon source, and then compounded with layered mesoporous titanium dioxide (LM-TiO2) to form composites. The addition of CQDs greatly enhanced the light absorption intensity of LM-TiO2 in the ultraviolet range and improved the degradation rate of organic pollutants compared to simple TiO2 and LM-TiO2.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Xinyi Luo, Qiang Xu, Tengfei Nie, Yonglu She, Xingmiao Ye, Liejin Guo
Summary: The increase in reaction resistance caused by bubble nucleation and long-term growth on the photoelectrode surface is a significant factor contributing to the low efficiency of photoelectrochemical water splitting. In this study, an electrochemical workstation synchronized with a high-speed microscopic camera system was used to observe the behavior of oxygen bubbles on the TiO2 surface and investigate the relationship between the geometric parameters of the bubbles and photocurrent fluctuations under different pressures and laser powers. The results showed that as the pressure decreased, the photocurrent decreased gradually, and the bubble departure diameter increased. The nucleation waiting stage and growth stage of bubbles shortened. However, the average photocurrent difference between the moment of bubble nucleation and the stable growth stage remained relatively constant with pressure. The production rate of gas mass reached its peak around 80 kPa. Additionally, a force balance model suitable for different pressures was constructed, revealing that the concentration Marangoni force is the main factor affecting the bubble departure diameter under subatmospheric pressure conditions.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Congcong Wei, Wei Zhang, Xinpeng Wang, Aihong Li, Jianping Guo, Bo Liu
Summary: The g-C3N4/TiO2 photocatalysts with mesoporous structure and intimate interfacial connection were synthesized through facile pyrolysis, exhibiting significantly improved photocatalytic activity. The enhancement was primarily attributed to the synergistic effect between large specific surface area, decreased energy band gap, and intimate interface contact.
Article
Materials Science, Multidisciplinary
Xiaotong Feng, Lifen Gu, Naiyu Wang, Qiaosheng Pu, Guangli Liu
Summary: Fe/N co-doped nano-TiO2 wrapped on mesoporous carbon spheres with a core-shell structure was designed to improve the synergy of adsorption and transfer, significantly enhancing the photocatalytic efficiency. The composite shows potential advantages in treating diverse environmental pollutants.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Inorganic & Nuclear
Praveen Lavudya, Harita Pant, Vadali V. S. S. Srikanth, Rajanikanth Ammanabrolu
Summary: An easy microwave-assisted hydrothermal method is used to prepare mesoporous and phase pure anatase TiO2 nanospheres in this research. The ATNS exhibits a high specific surface area, high N2 adsorption capacity, and shows a photodegradation efficiency of methylene blue dye as high as 98%.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Xueqin Wang, Ying Liu, Helong Xu, Man Dai, Peng Qiao, Wenyi Wang, Yanxiu Liu, Hua Song
Summary: Surface-decorated three-dimensional dendritic fibrous nanosilica (DFNS)/TiO2 materials were synthesized and studied for their potential applications in degrading organic pollutants. The DFNS/TiO2 catalysts exhibited unique fibrous morphologies, high specific surface areas, and excellent catalytic properties, with a first-order degradation rate constant of 0.0229 min(-1).
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Xuhui Feng, Fuping Pan, Peng Zhang, Xiao Wang, Hong-Cai Zhou, Yongheng Huang, Ying Li
Summary: By doping Mg2+, TiO2 photocatalysts exhibited enhanced performance with increased surface Ti3+ generation and transient photocurrent density. Among them, 1MA catalyst showed significantly improved CO production rate compared to commercially available TiO2 nanopowder P25 in CO2 reduction.
Article
Materials Science, Multidisciplinary
A. P. Juliya, V. M. Abdul Mujeeb, Peediyekkal Jayaram
Summary: In this study, a series of mesoporous TiO2/RuO2 nanosystems were successfully developed via the sol-gel route for the sunlight-assisted degradation of methylene blue. Comparative study was conducted to investigate the photocatalytic degradation of methylene blue using mesoporous TiO2 and mesoporous TiO2/RuO2 nanosystems. The results revealed the excellent photocatalytic performance of the TiO2/RuO2 nanostructures.
Article
Nanoscience & Nanotechnology
Yusuke Higashida, Shin-ya Takizawa, Masaki Yoshida, Masako Kato, Atsushi Kobayashi
Summary: In this study, a hydrophobic Ru-(II) dye-sensitized Pt-TiO2 nanoparticle photocatalyst was synthesized and integrated into DPPC lipid bilayer vesicles. The photocatalytic H-2 production activity was significantly enhanced in the presence of DPPC vesicles, indicating that the highly dispersed state of the hydrophobic Ru-(II) dye-sensitized Pt-TiO2 nanoparticles in the DPPC bilayer vesicles is crucial for achieving enhanced H-2 production activity in aqueous solution.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Samaneh Farjadfar, Mehran Ghiaci, Sergei A. Kulinch, Wilfried Wunderlich
Summary: This study reports on a low-cost synthesis of nanocomposites consisting of carbon dots trapped in a matrix of titanium dioxide. The prepared photocatalysts showed excellent performance in degrading organic contaminants under visible light irradiation. The materials also exhibited good thermal and chemical stability. The study provides an important step towards the rational design of highly active photocatalysts.
MATERIALS RESEARCH BULLETIN
(2022)
Article
Nanoscience & Nanotechnology
Maosong Liu, Xin Jin, Shun Li, Jean-Baptiste Billeau, Tingyu Peng, Henan Li, Long Zhao, Zuotai Zhang, Jerome P. Claverie, Luca Razzari, Jianming Zhang
Summary: The recent application of localized surface plasmon resonances (SPRs) in metallic nanoparticles has led to the construction of plasmonic nanohybrids for heterogeneous photocatalysis. By encapsulating an Ag NP core with SiO2 and TiO2 layers, and Au NPs on the outer surface, an efficient plasmonic photocatalyst, Ag@SiO2@TiO2-Au, has been designed to enhance catalytic activity. The structure unit with strong scattering and field enhancement induced by a plasmonic resonator is shown to significantly boost photocatalytic activity for high H-2 production rates under visible light.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Applied
Jianhao Qiu, Dingliang Dai, Lu Zhang, Ming Li, Jie Xu, Jianfeng Yao
Summary: Mesoporous TiO2 with regular pancake-like morphology was synthesized by calcination of MIL-125 at different temperatures, showing excellent performance in photocatalytic vanillin generation from sodium lignosulfonate due to its large specific surface area and mesoporous structure.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Physical
Soraya Hosseini, Ting-Hao Xu, Salman Masoudi Soltani, Ta-En Ko, Yu-Jui Lin, Yuan-Yao Li
Summary: The study demonstrates that introducing cations on the acetoxy groups can effectively mitigate self-corrosion in aluminum-air batteries, improving capacity and power density. The barium-Ac/KOH electrolyte shows good cyclic stability and low voltage gap in Al-air batteries, indicating high potential for practical applications.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Environmental Sciences
Balasubramaniam Karpan, Abdul Aziz Abdul Raman, Razuana Rahim, Mohamed Kheireddine Taieb Aroua, Archina Buthiyappan
Summary: Refuse Derived Fuel (RDF) is an alternative energy source that can lower carbon footprint and provide environmental credentials by converting various wastes into fuel. This study focuses on estimating the carbon footprint of industrial wastes-based solid fuel (IWSF) and explores the feasibility of replacing coal with IWSF in cement kilns. The results show that cofiring IWSF can reduce CO2 emissions and promote sustainability.
WASTE AND BIOMASS VALORIZATION
(2022)
Article
Chemistry, Physical
Luqman H. Hashim, Ahmed Halilu, Yahaya Balarabe Umar, Mohd Rafie Bin Johan, Mohamed Kheireddine Aroua, Paramita Koley, Suresh K. Bhargava
Summary: This study focuses on the design and synthesis of highly active bifunctional catalysts for the conversion of furfural to furfuryl acetate. The catalysts with lower lattice strain exhibited higher catalytic activity.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
A. Arifutzzaman, Intan Najihah Musa, Mohamed Kheireddine Aroua, R. Saidur
Summary: In recent decades, capturing carbon has become a priority in addressing climate change. This paper explores the use of MXenes and activated carbon as CO2 adsorbents, evaluating their performance through various tests and analysis. The AC/MXene sandwich adsorbent showed the highest CO2 adsorption capacity with a significant improvement over AC. The results highlight the potential of emerging nanomaterials in large-scale CO2 capture applications.
JOURNAL OF CO2 UTILIZATION
(2023)
Review
Chemistry, Physical
Nadeem Hussain Solangi, Farihahusnah Hussin, Amna Anjum, Nizamuddin Sabzoi, Shaukat Ali Mazari, Nabisab Mujawar Mubarak, Mohamed Kheireddine Aroua, M. T. H. Siddiqui, Sundus Saeed Qureshi
Summary: Ionic liquids (ILs) are well-known for their CO2 capture properties. The combination of ILs with various materials reduces the problem of high viscosity of ILs. Encapsulated ionic liquid (ENIL) systems can overcome the low CO2 absorption rate and difficulties in solvent regeneration. This review comprehensively evaluates recent literature on ENILs for CO2 capture, including preparation, characterization, reaction kinetics, solubility, selectivity, and regeneration studies.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Engineering, Chemical
Nur Syahirah Mohamed Hatta, Farihahusnah Hussin, Lai Ti Gew, Mohamed Kheireddine Aroua
Summary: This study investigates the use of egg white as a surface modifier to enhance the adsorption capacity of palm shell activated carbon for CO2 capture. The adsorbent exhibits significant increase in CO2 uptake with the addition of 10 wt.% egg white. The introduction of amide functional group of egg white on the surfaces of activated carbon contributes to the enhanced CO2 adsorption capacity.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Mohd Azlan Kassim, Nor Afifah Sulaiman, Rozita Yusoff, Mohamed Kheireddine Aroua
Summary: Carbon dioxide (CO2) absorption in a non-aqueous solution was investigated using a deep eutectic solvent (DES) of choline hydroxide and polyamines, combined with non-aqueous solvents such as sulfolane and dimethylsulfoxide (DMSO). The study found that the 2M ChOH:TETA-DMSO solution had the highest CO2 loading capacity among the tested solutions. The absorption capacity increased with pressure and decreased with temperature, indicating the potential of using a DES polyamine mixed with a non-aqueous solvent for CO2 capture.
Article
Green & Sustainable Science & Technology
Farihahusnah Hussin, Nur Nadira Hazani, Mohamed Kheireddine Aroua
Summary: The aim of this study was to prepare a carbon pellet with excellent surface properties for CO2 capture using low-cost material and a green process. A chemical activation method was introduced by modifying the pellet with potassium acetate to enhance its surface properties. The modified carbon pellet showed remarkable changes in surface morphology and increased CO2 adsorption capacity due to the presence of oxygen-containing functional groups. The results suggest that the carbon pellet modified with potassium acetate is suitable for CO2 adsorption.
Review
Chemistry, Multidisciplinary
Farihahusnah Hussin, Siti Aqilah Nadhirah Md Rahim, Mohamed Kheireddine Aroua, Shaukat Ali Mazari
Summary: Climate change and global warming are crucial environmental issues that require global action. Carbon capture technology and machine learning play important roles in reducing CO2 emissions and addressing climate change. Research and development in this field are crucial for future advancements and combating the challenges of climate change.
JOURNAL OF CO2 UTILIZATION
(2023)
Review
Chemistry, Applied
Farihahusnah Hussin, Nur Nadira Hazani, Munawar Khalil, Mohamed Kheireddine Aroua
Summary: This article provides a systematic review of hydrothermal technology and the life cycle assessment of hydrothermal biomass conversion. The study found that there is limited research on the environmental and economic impacts of hydrothermal biomass conversion, highlighting the need for environmental impact studies to demonstrate the benefits of biomass hydrothermal processing.
FUEL PROCESSING TECHNOLOGY
(2023)
Review
Engineering, Chemical
Kay Yi Chook, Mohamed Kheireddine Aroua, Lai Ti Gew
Summary: In this study, the advancements and breakthroughs in emerging biocatalysis reactor technologies over the past decade were documented. The focus was on the production of glycerides using enzyme biocatalysis. Reaction parameters and optimization strategies, such as temperature and residence time, were reviewed and discussed. The selection of reactor type and agitator was found to be crucial for enzyme activity. The conversion of enzymes from waste streams into functional products could enhance the sustainability of biocatalysis. This work serves as a stepping stone for the biocatalysis industry, providing a reference for those interested in exploring this field.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Engineering, Environmental
Chee Yung Pang, Gulnaziya Issabayeva, Yean Ling Pang, Mee Chu Wong, Mohamed Kheireddine Aroua
Summary: The demand for zinc oxide increased significantly during the Covid-19 pandemic, as gloves became essential in daily life. This study successfully demonstrated the removal and recovery of zinc ions from real industrial wastewater, using an adsorption-desorption-chemical precipitation approach, to produce usable secondary zinc oxide.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Review
Engineering, Electrical & Electronic
Md Shafiullah, Saidur Rahman, Binash Imteyaz, Mohamed Kheireddine Aroua, Md Ismail Hossain, Syed Masiur Rahman
Summary: The Southeast Asian region is increasingly interested in smart city initiatives, with a focus on promoting energy efficiency, reducing greenhouse gas emissions, and implementing renewable energy targets. However, challenges related to leadership, governance, citizen support, and investment, among others, arise in implementing smart energy systems. This article discusses the concept of smart cities, highlights different types of initiatives in Southeast Asian countries, and explores the challenges and potential solutions for implementing smart energy systems.
Proceedings Paper
Engineering, Electrical & Electronic
Mikhail Gorbounov, Emilie Diaz-Vasseur, Rafal Panek, Salman Masoudi Soltani
Summary: Climate change requires immediate action, with Carbon Capture and Storage (CCS) standing out as a prominent mitigation technique. Adsorption CCS using carbonaceous nanoporous sorbents has shown promise for industrial decarbonization. The production pathway and the presence of binders can impact the structure and adsorption capacity of the material.
2023 IEEE 23RD INTERNATIONAL CONFERENCE ON NANOTECHNOLOGY, NANO
(2023)
Review
Green & Sustainable Science & Technology
Mohammad Reza Ketabchi, Shervan Babamohammadi, William George Davies, Mikhail Gorbounov, Salman Masoudi Soltani
Summary: This paper provides a state-of-the-art review of the synthesis and application of bio-based sorbents in post-combustion carbon capture processes, as well as the recent trends in utilizing machine learning for the development of these sorbents and the design of corresponding adsorption processes.
CARBON CAPTURE SCIENCE & TECHNOLOGY
(2023)
