Article
Chemistry, Physical
Abinash Das, Moumita Patra, Mathan P. Kumar, Muthuraaman Bhagavathiachari, Ranjith G. Nair
Summary: The construction and optimization of ZnO-CeO2 heterojunctions exhibit superior photocatalytic performance in the degradation of organic dyes, attributed to the formation of oxygen vacancies induced by Ce3+/Ce4+ ions in CeO2. The optimized catalyst also shows significant visible-light response and high charge-carrier separation efficiency.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Inorganic & Nuclear
Chao Wang, Shoujuan Wang, Fangong Kong, Ning Chen
Summary: This study successfully synthesized two novel ferrocene-sensitized Ti-oxo clusters and systematically investigated their molecular structures, light absorption, charge transfer, and photoelectrochemical properties. The results demonstrate that incorporating specific ligands can significantly enhance the light absorption of the clusters and improve their photoelectric conversion efficiency.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Physics, Condensed Matter
Durga Sankar Vavilapalli, Raja Gopal Peri, B. Muthuraaman, Kishore Sridharan, M. S. Ramachandra Rao, Shubra Singh
Summary: The synthesis of a heterojunction photocatalyst based on graphitic carbon nitride (g-C3N4) and brownmillerite KBiFe2O5 (KBFO) is reported. The formation of heterojunction is confirmed and significant improvements are observed in degrading organic effluent.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Biochemistry & Molecular Biology
Luan Pereira Camargo, Marcelo Rodrigues da Silva Pelissari, Paulo Rogerio Catarini Da Silva, Augusto Batagin-Neto, Roberta Antigo Medeiros, Marcos Antonio Dias, Luiz Henrique Dall Antonia
Summary: This study reports a facile approach for constructing a low-cost and remarkable electroactivity iron vanadate semiconductor material for dopamine detection. The structure and morphology of the iron vanadate obtained by the Successive Ionic Adsorption and Reaction process were characterized, and the photoelectrochemical characterization showed a high photoelectroactivity. Dopamine was successfully detected under best conditions, with good accuracy and selectivity. DFT-based electronic structure calculations were also conducted to help interpret the results.
Article
Biochemistry & Molecular Biology
Naseer Iqbal, Muhammad Shahzeb Khan, Muhammad Zubair, Safyan Akram Khan, Asghar Ali, Naif Aldhafeeri, Saud Alsahli, Misheal Alanzi, Abdelazeez Enazi, Talal Alroyle, Abdullatif Alrashidi
Summary: This article presents the hydrothermal fabrication of CdO-g-C3N4 photocatalyst for improved photocatalytic performance in water splitting. The study indicates that CdO-g-C3N4 exhibits good photo-electrochemical properties and shows higher photocurrent density under visible light irradiation.
Article
Environmental Sciences
Thirugnanam Bavani, Jagannathan Madhavan, Saradh Prasad, Mohamad S. AlSalhi, Mamduh ALJaffreh, Selvaraj Vijayanand
Summary: A visible light driven AgVO3/BiOI nanocomposite photocatalyst with different wt % of AgVO3 was fabricated and characterized for its structural and photocatalytic properties. The 1 wt % AgVO3/BiOI nanocomposite exhibited enhanced photocatalytic efficiency, possibly due to increased visible light absorption and efficient charge carrier separation.
ENVIRONMENTAL RESEARCH
(2021)
Article
Chemistry, Inorganic & Nuclear
Deepanshu Sharma, Mohd Faraz, Dheeraj Kumar, Devender Takhar, Balaji Birajdar, Neeraj Khare
Summary: In this study, V2O5/rGO nanocomposite was synthesized using a simple hydrothermal method, and its potential for photocatalysis and photoelectrochemical water splitting was validated. Compared to bare V2O5, V2O5/rGO nanocomposite exhibited improved photocatalytic activity and enhanced photoelectrochemical performance.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Environmental Sciences
Ch Venkata Reddy, Raghava Reddy Kakarla, Jaesool Shim, Rustem R. Zairov, Tejraj M. Aminabhavi
Summary: In this study, pure and chromium-doped SnO2 nanoflakes were synthesized and their photocatalytic and photoelectrochemical properties were investigated. The doped SnO2 exhibited high catalytic activity and enhanced photocurrent density compared to the pure samples. The synthesized nanoflakes showed significant dye removal efficiency and are suitable for water oxidation and photodegradation of organic pollutants.
ENVIRONMENTAL RESEARCH
(2023)
Article
Chemistry, Physical
Jiangtao Huang, Aiyun Meng, Zongyan Zhang, Shaolei Xiao, Xuanmeng Guo, Xiaoyuan Wu, Shuqi Huang, Guanjie Ma, Peigang Han, Bin He
Summary: In this study, nitrogen-doped titanium dioxide/boron-doped diamond heterojunction (N-TiO2/BDD) was proposed as an effective approach to improve the catalytic activity. The N-TiO2/BDD heterojunction showed enhanced photoelectrochemical (PEC) activity compared to TiO2/BDD, with extended absorption spectrum and higher electrical conductivity. The performance of N-TiO2/BDD was influenced by doping concentration and bias potential. Under optimized conditions, the N-TiO2/BDD heterojunction achieved a larger current density and demonstrated promising applications in organic pollutant treatment.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Multidisciplinary Sciences
Asyiqin Zulkiflee, Mohammad Mansoob Khan, Abuzar Khan, Mohd Yusuf Khan, Hatim Dafalla Mohamed Dafalla, Mohammad Hilni Harunsani
Summary: Bismuth oxychloride (BiOCl) and Sn-doped BiOCl (SBCl) were synthesized with improved visible light photocatalytic activity. The Sn-doped samples showed higher photocatalytic efficiency and larger specific surface area compared to BiOCl. SBCl also exhibited enhanced photoelectrochemical activities. Therefore, SBCl has potential applications as a photocatalyst and photoelectrode material.
Article
Chemistry, Multidisciplinary
Wenzhao Zhang, Long Zhang, Sanzhong Luo
Summary: Catalytic asymmetric de Mayo reaction was achieved for the first time under visible light using asymmetric binary acid catalysis (ABC) involving zirconium chloride and chiral phosphoric acid (CPA). The chiral zirconium catalysis enables effective reactions over a broad range of 1,3-diketones and alkenes with up to >99% yield and 98% ee. The key chiral zirconium enolate was isolated and characterized to account for the observed catalysis and stereoselectivity.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Engineering, Environmental
Weidong Wu, Yiming Sun, Haifeng Zhou
Summary: The study activated the deactivated silver bismuthate catalyst with a simple calcination method to obtain a series of bismuth and silver compounds. The ABO-290 activated at 290 degrees Celsius showed the highest degradation efficiency and apparent reaction rate constant, making it a potential highly efficient photocatalyst.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Seyed Majid Ghoreishian, Kugalur Shanmugam Ranjith, Hoomin Lee, Bumjun Park, Mohammad Norouzi, Somayeh Zeinali Nikoo, Woo-Sik Kim, Young-Kyu Han, Yun Suk Huh
Summary: In this study, Fe and Sn co-doped TiO2 nanofibers showed superior photocatalytic efficiency and cycling stability in the degradation of the antibiotic tetracycline under visible light irradiation. The co-doped sample exhibited a dominant anatase phase, enhancing photocatalytic activity, and followed the Langmuir-Hinshelwood kinetic model for photodegradation. Additionally, electron paramagnetic resonance and radical scavenging experiments confirmed the involvement of (OH)-O-center dot and O-center dot(2)- radicals in the degradation process.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Environmental
Alejandro Bembibre, Majdi Benamara, Mokhtar Hjiri, Elvira Gomez, Hatem R. Alamri, Ramzi Dhahri, Albert Serra
Summary: The study explores the efficient mineralization of tetracycline antibiotics using Ca-doped ZnO nanopowders under LED visible light and ultrasound irradiation. The catalyst exhibited high efficiency, reusability, and minimal sonophotocorrosion, especially in natural waters' pH range.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Wenjing Shen, Dandan Xiang, Junnan Yang, Yanting Tang, Changhui Xin, Quanhui Guo, Xin Yu
Summary: In this study, a beta zeolite supported Ti3+-TiO2/CdS heterojunction was prepared for the photodegradation of tetracycline under visible-light irradiation. The zeolite served as a support for the high dispersions of the Ti3+-TiO2/CdS composite, leading to a significant increase in the surface area. Experimental results showed that the zeolite/Ti3+-TiO2/CdS heterojunction exhibited a high photocatalytic degradation efficiency, mainly due to the supporting effects of zeolite and the formation of the Ti3+-TiO2/CdS heterostructure for enhanced charge separation.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Review
Environmental Sciences
Hongliang Yin, Yiwei Cai, Guiying Li, Wanjun Wang, Po Keung Wong, Taicheng An
Summary: After entering water environments, antibiotic resistance bacteria and genes undergo various transformations, possibly leading to stressed or non-stressed states, resulting in tolerance or persistence phenotypes that make the antibiotic resistance problem more challenging and complex.
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Physical
Chengzhang Zhu, Qiming Xian, Haiqian Yao, Chuanxiang Chen, Weixin Zou, Xiaoguang Duan, Zhifeng Jiang, Po Keung Wong
Summary: This study designed and constructed edge-rich bicrystalline 1T/2H-MoS2 nanosheet cocatalyst modified V-doped hierarchical TiO2 microspheres for the photocatalytic removal of oxytetracycline hydrochloride. The optimized VTM-5% heterojunction exhibited superior degradation efficiency due to enhanced light-harvesting capacity, rapid photogenerated charge transfer, and affinity to reactant molecules.
MATERIALS TODAY ENERGY
(2022)
Article
Engineering, Environmental
Hongli Sun, Kemeng Xiao, Yunfei Ma, Shuning Xiao, Qitao Zhang, Chenliang Su, Po Keung Wong
Summary: This study developed a novel defective BiO2-x based collaborating system that utilizes near infrared light to activate persulfate for photocatalytic bacterial inactivation. The mechanism of bacterial damage was systematically investigated, revealing the lethal effects of the reactive species generated in this system.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Chemical
Ningning Dong, Lifa Ge, Pei Chen, Wei Wang, Fatang Tan, Xinyun Wang, Xueliang Qiao, Po Keung Wong
Summary: In this study, CaO2 nanoparticles were non-radically activated by MgNCN/MgO composites for efficient remediation of organic and heavy metal-contaminated wastewater. The CaO2-based AOP system showed excellent degradation performance towards Tetracycline (TC) and Methylene Blue (MB), and could simultaneously remove heavy metal ions in wastewater.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Yongjie Liu, Yiwei Cai, Guiying Li, Wanjun Wang, Po Keung Wong, Taicheng An
Summary: The stress response mechanism of antibiotic-resistant bacteria with different antibiotic resistance action targets was explored using heterogeneous photocatalytic oxidation. The results showed that the stress response mechanism varied depending on the resistance targets and different stress response systems were mediated via cross-protection mechanism. The study also investigated the photocatalytic inactivation mechanism of bacterial cells. This research provides detailed information on the practical application of photocatalytic oxidation for inactivating antibiotic-resistant bacteria and preventing the spread of antibiotic resistance genes in the aquatic environment.
Article
Chemistry, Physical
Yu Deng, Chuan Wan, Chao Li, Yongye Wang, Xiaoyang Mu, Wei Liu, Yingping Huang, Po Keung Wong, Liqun Ye
Summary: This study reveals that the (111) facet of Cu2O is the origin of selectivity for CH4 formation in photocatalytic CO2 reduction. Decorating the surface of Cu2O-111 with zero-valent copper further enhances the yield and selectivity. The results provide a promising idea for designing Cu2O catalysts for the conversion of CO2 into high-value-added hydrocarbon products with high activity and selectivity.
Article
Environmental Sciences
Wanjun Wang, Yan Liu, Guiying Li, Zhenni Liu, Po Keung Wong, Taicheng An
Summary: The mechanisms of bacterial sporulation at natural mineral interfaces were investigated in this study. It was found that natural sphalerite (NS) could inactivate vegetative cells of Bacillus subtilis (B. subtilis) and promote their sporulation. With light irradiation, the photocatalytic effect of NS increased the bacterial inactivation efficiency but decreased the sporulation efficiency.
ENVIRONMENT INTERNATIONAL
(2022)
Article
Chemistry, Physical
Danjun Mao, Shuxue Yang, Yuan Hu, Huan He, Shaogui Yang, Shourong Zheng, Cheng Sun, Zhifeng Jiang, Xiaolei Qu, Po Keung Wong
Summary: By fabricating freestanding ultrafine Bi5O7Br nanowires with abundant oxygen vacancies, this study successfully optimized the critical processes of CO2 photocatalysis and improved the reaction efficiency. The findings may inspire the future design of ultrafine catalysts for artificial photosynthesis.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2023)
Article
Engineering, Chemical
Zhiran Hou, Wei Wang, Ningning Dong, Pei Chen, Lifa Ge, Fatang Tan, Xinyun Wang, Xueliang Qiao, Po Keung Wong
Summary: A dual-oxidant advanced oxidation process (AOP) system comprising calcium peroxide (CaO2) and peroxymonosulfate (PMS) was developed for efficient degradation of refractory organic pollutants. The system showed high degradation efficiency of tetracycline (TC), following a pseudo second-order kinetic model, with 91% degradation achieved within 4 minutes at room temperature using 0.1 g/L CaO2 and 0.3 g/L PMS. The system exhibited strong anti-interference capabilities and was effective over a wide pH range (3-12) and for various organic pollutants.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Environmental
Dingren Ma, Ran Yin, Zhuocheng Liang, Qiwen Liang, Guizhi Xu, Qiyu Lian, Po Keung Wong, Chun He, Dehua Xia, Hui Lu
Summary: Micro/nano bubbles (MNBs) coupled with tellurium-based catalysts were used to enhance solar disinfection (SODIS) efficiency in low-temperature groundwater. The sterilization tests showed complete inactivation of E. coli and Aspergillus niger spores within 5 minutes, highlighting the effectiveness of this novel disinfection process. This study provides a cost-effective solution for microbial inactivation in groundwater.
Review
Energy & Fuels
Lifa Ge, Wei Wang, Fatang Tan, Xinyun Wang, Xueliang Qiao, Po Keung Wong
Summary: Photocatalytic technology is a sustainable, efficient, and eco-friendly method for removing microorganisms and their genes from the environment. This article summarizes the latest research on the use of semiconductor photocatalysts for microorganism removal, including operating conditions and efficiency. The photocatalytic disinfection mechanism, involving solar disinfection, physical damage, and reactive oxygen species, is described in detail. The challenges and difficulties of practical application are also discussed. With further development, sunlight-driven and indoor-light-driven photocatalysts show great potential for environmental disinfection.
Article
Chemistry, Physical
Liangpang Xu, Po Keung Wong, Zhifeng Jiang, Jimmy C. Yu
Summary: This article describes an innovative application of iodide-based photocatalytic process for the efficient degradation of phenolic pollutants, even in complex water matrixes.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Danjun Mao, Tong Li, Huan He, Shuxue Yang, Shaogui Yang, Cheng Sun, Shourong Zheng, Zhifeng Jiang, Zhaoyi Xu, Po Keung Wong, Xiaolei Qu
Summary: This study successfully enhanced the oxidation activity of alcohols by synthesizing lead bismuth oxychloride ultrathin bowls with rich oxygen vacancies. The oxygen vacancies not only generated abundant localized electrons, but also promoted the adsorption and activation of oxygen, providing inspiration for the design of artificial photosynthesis.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Engineering, Environmental
Huinan Zhao, Wei Qu, Lingling Hu, Zhuoyun Tang, Feng Zhang, Huanjunwa He, Dehua Xia, Taoli Wu, Xin Li, Qiyu Lian, Po Keung Wong, Chun He
Summary: This study applies three different facet-engineered Cu immobilized on a mesoporous rGO aerogel as an air disinfection filter. The Cu nanowire/rGO aerogel with sharp edges and light-induced photothermal effect exhibits superior activity in air disinfection. The Cu/rGO aerogel with more defective sites, enhanced electromagnetic field strength, excellent electronic structure, and photothermal ability is beneficial to the generation of reactive oxygen species (ROS). The extracellular electron transfer (EET) between bacteria and Cu/rGO can disrupt the bacterial redox equilibrium and accelerate bacterial inactivation.
ACS ES&T ENGINEERING
(2022)
Article
Engineering, Environmental
Shulan Shi, Cuiping Zeng, Tong Si, Bo Wang, Po Keung Wong
Summary: Converting renewable solar energy into fuel and chemicals is a promising solution for the energy crisis and environmental issues. Photosynthetic biohybrid systems combine artificial semiconductor materials and living cells to efficiently capture and store solar energy. Significant progress has been made, but challenges remain and further research is needed.
ACS ES&T ENGINEERING
(2022)
