Article
Chemistry, Inorganic & Nuclear
Yujing Ou, Junqing Shi, Quanqing Yan, Chunlei Li, Yi Zheng
Summary: The study highlights the importance of enhancing precursor mixing effect in molten salt synthesis of photocatalysts, with ethanol playing a crucial role in the synthesis of Bi4Ti3O12/Bi2Ti2O7 composite photocatalysts. The prepared composite displayed higher photocatalytic activity compared to individual components and showed the smallest charge resistance. The increased photocatalytic activity was attributed to a large charge transfer interface and built-in electric field rather than light absorption or dark adsorption.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Engineering, Environmental
Jawer David Acuna-Bedoya, E. Luevano-Hipolito, Erika Iveth Cedillo-Gonzalez, Laura Patricia Dominguez-Jaimes, Alonso Martinez Hurtado, Juan Manuel Hernandez-Lopez
Summary: This study proposes a photocatalytic degradation method using visible light irradiation to mitigate the pollution caused by polystyrene nanoplastics. By using immobilized copper oxide semiconductors, the researchers achieved significant degradation and mineralization of PS-NPs, showing promising results in the removal of these pollutants.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
Prerna Attri, Preeti Garg, Moondeep Chauhan, Rajender Singh, Ramesh K. Sharma, Sandeep Kumar, Dong-Kwon Lim, Ganga Ram Chaudhary
Summary: Here, we presented the fabrication of well-crystalline metal-doped BiOCl nanoscale photocatalytic materials through solvothermal synthetic route. Ni doping significantly improved the photocatalytic and antibacterial behavior of BiOCl. The morphological study showed that different metal dopings led to the formation of nanosheet (Ni, Cd), nanoflower (Mo), and nanodisc (Co) morphologies, while Ni doping resulted in large size nanosheets with increased surface area and improved porous structure. The inclusion of Ni into BiOCl nanostructure shifted the band gap and reduced electron-hole recombination, contributing to its excellent photocatalytic performance. Additionally, Ni-BiOCl exhibited excellent photocatalytic antibacterial activity against S. aureus bacteria under visible light.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Materials Science, Ceramics
Yisheng Xu, Yaoheng Liang, Zeng Yuai, Hangyu Long, Qizhi He, Kaijin Guo, Yuyuan Zhang, Dongchu Chen, Xuejun Xu, Huawen Hu
Summary: In this study, the energy-band structure, morphology, and surface properties of g-C3N4 materials were effectively modulated by co-doping with non-metal and metal elements. The resulting co-doped CN exhibited superior visible-light harvesting capacity and charge separation efficiency, leading to highly active photocatalytic degradation of tetracyclines.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Hui Yang, Lu Jia, Zhipeng Zhang, Bin Xu, Qitao Zhang, Saisai Yuan, Yonghao Xiao, Zhaodong Nan, Ming Zhang, Yongcai Zhang, Teruhisa Ohno
Summary: In this study, the photocatalytic abilities of Fe ions doped ceria with different morphologies for gaseous acetaldehyde degradation were compared. The results showed that Fe/CeO2-r nanorods exhibited 4.72 times higher photooxidation ability for acetaldehyde removal compared to pure CeO2-r nanorods. The analysis revealed that Fe/CeO2-r and CeO2-r mainly exposed {110} and {100} facets, while CeO2 and Fe/CeO2 with cube morphology mainly exposed {100} facets. The study also confirmed that Fe/CeO2 {110} is more conducive to acetaldehyde absorption and carbon dioxide desorption, and the doping of Fe ions improves the photocatalytic efficiency of ceria-based photocatalysts.
APPLIED MATERIALS TODAY
(2022)
Article
Chemistry, Physical
Xianhu Chi, Fengjiao Liu, Yan Gao, Jun Song, Rongfeng Guan, Haibin Yuan
Summary: By utilizing element doping and morphology control strategies, B/Na co-doped porous carbon nitride nanosheets were prepared, exhibiting exceptional photocatalytic hydrogen generation and pollutant removal properties. This provides a new approach for the preparation of semiconductor photocatalysts with superior performance.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Yuanyuan Wang, Yaoxian Zhu, Hangmin Guan, Yingfei Hu, Yijie Zhao, Wenyan Zhang, Yancheng Gong
Summary: In2S3 materials doped with different concentrations of copper ions (Cu-In2S3) were synthesized and showed improved response to visible light, carrier separation, and adsorption for rhodamine B. Cu-doping enhanced the photocatalytic activity of In2S3 for dye removal, with 0.3% Cu2+-doped In2S3 exhibiting the highest activity and stability. Superoxide radicals were identified as the main active species in the photocatalytic degradation of rhodamine B over 0.3% Cu-In2S3. This study provides valuable insights for the construction of In2S3-based photocatalytic materials.
Article
Chemistry, Inorganic & Nuclear
Dang Minh Phuong, Tran Anh Duong, Nguyen Thuy Huong, Nguyen Viet Khoa, Nguyen Thi Hanh, Nguyen Minh Phuong, Thanh-Dong Pham, Hoang Thu Trang, Nguyen Van Noi
Summary: Ni dopants were used to improve the photocatalytic performance of WO3 for tetracycline degradation. The results showed that Ni dopants acted as nuclei during crystallization, increasing crystal size. However, Ni dopants also caused lattice distortion, preventing agglomeration and reducing particle size. Ni dopants also induced the formation of mesopores on the WO3 surface, increasing surface area. The synthesized Ni-WO3 exhibited enhanced visible light absorption and prevented electron-hole recombination, resulting in novel photocatalytic performance.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Engineering, Environmental
Jielin Huang, Jing Liu, Lina Tian, Xiangli Li, Xinqi Ma, Xin Yu, Quanhui Guo, Junwei Zhao
Summary: This study introduces a novel modified solvothermal strategy to synthesize carbon-coated Zr3+-ZrO2 composites with enhanced visible light absorption and photocatalytic degradation of tetracycline. Results demonstrate that the carbon-coated Zr3+-ZrO2 composites exhibit efficient visible light photocatalytic performance and recyclable stability. The possible photocatalytic mechanism and degradation pathways of antibiotics under visible light irradiation were also proposed in detail.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Fuhang Xu, Ning An, Cui Lai, Mingming Zhang, Bisheng Li, Shiyu Liu, Ling Li, Lei Qin, Yukui Fu, Huan Yi, Huchuan Yan
Summary: The increasingly serious pollution of antibiotics poses a huge threat to the ecological environment and human health. This study designed and synthesized a composite photocatalyst CeO2/N-doped g-C3N4 (CeNCN) with nitrogen doping and CeO2 loading, which showed excellent photodegradation performance and broad application prospects.
Article
Chemistry, Inorganic & Nuclear
Xin Yan, Bingbing Kang, Tao Ai, Zhuo Li, Yanhui Niu
Summary: Crystalline g-C3N4 nanosheets with excellent photocatalytic activity were successfully prepared by one-step molten salts method. The nanosheets exhibited high efficiency in degrading pollutants due to their 2D morphology and high specific surface area. This study provides a new direction for the development of efficient photocatalytic materials.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Jie Cui, Shasha Tao, Xiaoli Yang, Xiaojing Yu, Shaodong Sun, Qing Yang, Wei Wei, Shuhua Liang
Summary: Doping Ni into BiOCl can significantly improve its photocatalytic performance by modifying the electronic structure. The introduction of Ni narrows the band-gap, forms defect energy levels, results in a red shift in the absorption edge, and enhances absorption in the visible-light range.
MATERIALS RESEARCH BULLETIN
(2021)
Article
Chemistry, Multidisciplinary
Shaidatul Najihah Matussin, Fazlurrahman Khan, Mohammad Hilni Harunsani, Young-Mog Kim, Mohammad Mansoob Khan
Summary: In this study, irregular pentagonal CeO2 and cobalt-doped CeO2 nanoparticles were synthesized, and their structural, optical, and morphological properties were investigated. The results showed that cobalt doping enhanced the photocatalytic and photoantibacterial activities of CeO2.
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
Environmental Sciences
Zhengyang Chen, Shui Yu, Jianping Liu, Yamei Zhang, Yuchen Wang, Jiangyi Yu, Ming Yuan, Pengchao Zhang, Wen Liu, Jiaoxia Zhang
Summary: The continuous presence of organic pollutants in industrial wastewater poses a significant threat to human health, necessitating urgent and effective treatment. Photocatalytic degradation technology, specifically the use of TiO2 photocatalysts, provides a viable solution for the removal of organic pollutants. However, the limited absorption of visible light by TiO2 hinders its full utilization. To address this issue, the study developed an environmentally friendly synthesis of Ag-coated on micro-wrinkled TiO2-based catalysts, enabling extended absorption of visible light. The synthesized C/F-Ag-TiO2 composite exhibited a significantly lower band gap energy and achieved a remarkable degradation rate under visible light, making it a promising candidate for highly efficient environmental remediation.
ENVIRONMENTAL RESEARCH
(2023)
Article
Nanoscience & Nanotechnology
In Seon Hwang, Velu Manikandan, Ruturaj P. Patil, Mahadeo A. Mahadik, Weon-Sik Chae, Hee-Suk Chung, Sun Hee Choi, Jum Suk Jang
Summary: In this study, a multifunctional photocatalyst was synthesized by loading metal oxides (Co/Pd) on acid-treated TiO2 nanorods (ATO) and subjecting them to hydrogen annealing treatment. The treatment converted the metal oxides into a bimetallic form, delayed charge recombination, and introduced oxygen vacancies. The hydrogen-treated photocatalyst (Pd(1)Co(1)/ATO (red)) exhibited high degradation efficiencies for orange II dye and BPA degradation, as well as antibacterial activity, under sunlight irradiation.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Physical
Periyasamy Anushkkaran, Mahadeo A. Mahadik, Weon-Sik Chae, Hyun Hwi Lee, Sun Hee Choi, Jum Suk Jang
Summary: This article presents the fabrication and systematic analyses of Pt and Al co-doped hematite photoanodes utilizing a simple microwave process to improve the photoelectrochemical (PEC) performance of hematite. The Pt/Al dual ions doping synergistically elevated the photocurrent of hematite by 48% at 1.23 V vs. RHE (1.55 mA/cm2), and resulted in an obvious decrease in the onset potential (compared to that of the solely Pt-doped hematite). The optimized Pt(1.2%)/Al(2.5 mM) co-doped hematite (Pt/Al-HT) photoanode achieved the highest incident photon-to-current efficiency (IPCE) of 33% at 350 nm at 1.23 V vs. RHE.
APPLIED SURFACE SCIENCE
(2023)
Article
Environmental Sciences
Mahadeo A. Mahadik, In-Seon Hwang, Weon-Sik Chae, Hyun Hwi Lee, Sun Hee Choi, Min Cho, J. S. Jang
Summary: This study demonstrates the effectiveness of hydrogen treatment in evaluating charge separation properties in WO3-x/TiO2-x NT/Ti foil heterojunction photoanodes. The hydrogen-treated H-WO3-x/TiO2-x NT-300 electrode exhibits significantly higher photocurrent density and bulk efficiencies compared to TiO2 NT and WO3/TiO2 NT. The optimized H-WO3-x/TiO2-x NS/NT-300 photoanode shows high decomposition efficiencies for E. coli and BPA. These findings highlight the potential of microwave-assisted H-WO3-x/TiO2-x NT heterojunction photoanodes for organic decomposition and antibacterial activity in a neutral environment without surface-loaded co-catalysts.
Article
Chemistry, Multidisciplinary
Periyasamy Anushkkaran, Tae Sik Koh, Weon-Sik Chae, Hyun Hwi Lee, Sun Hee Choi, Jum Suk Jang
Summary: To improve the performance of hematite (alpha-Fe2O3) photoanode, we developed a Nb-doped and Co(OH)x cocatalyst-deposited alpha-Fe2O3 thin film photoanode (Nb-HT/Co(OH)x) through in situ diluted hydrothermal and microwave-assisted methods. The Nb-HT/Co(OH)x photoanode exhibited significantly higher photocurrent density and charge separation efficiency compared to the Bare-Fe2O3 photoanode. This bulk and surface modification strategy provides a new approach for constructing stable photoanodes for solar energy conversion.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Nanoscience & Nanotechnology
Ruturaj P. Patil, Mahadeo A. Mahadik, Weon-Sik Chae, Sun Hee Choi, Jum Suk Jang
Summary: Solar energy, as the most promising and efficient environmentally-friendly energy source, has the potential to meet global demand due to its non-polluting nature. A porous Zn1-x Cd (x) Se/ZnO nanorod heterojunction was synthesized by hydrothermal and low-temperature solvothermal methods. The material showed enhanced photoelectrochemical properties with high photocurrent density and hydrogen evolution rate, attributed to effective light absorption and prolonged recombination lifetime.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Ruturaj P. Patil, Mahadeo A. Mahadik, Weon-Sik Chae, Jum Suk Jang
Summary: In this study, a porous Zn1-xCdxSe structure was developed on a TiO2 nanorod array for photoelectrochemical applications. The synthesis process involved the preparation of TiO2 NR and ZnO/TiO2 NR photoanodes, followed by the solvothermal synthesis of inorganic-organic hybrid ZnSe(en)(0.5) on the ZnO/TiO2 NR-based electrode using different selenium concentrations. Furthermore, the inorganic-organic hybrid ZnSe(en)(0.5)/TiO2 NR electrode was transformed into a porous Zn1-xCdxSe/TiO2 NR photoanode through the Cd2+ ion-exchange method to improve the PEC charge transfer performance. The optimized porous Zn1-xCdxSe/TiO2 NR-(2) photoanode exhibited a higher photocurrent density of 6.6 mA.cm(-2) at 0 V vs. Ag/AgCl, attributed to enhanced light absorption, charge separation, and the porous structure of Zn1-xCdxSe.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Jun Beom Hwang, Periyasamy Anushkkaran, Weon-Sik Chae, Sun Hee Choi, Hyun Hwi Lee, Jum Suk Jang
Summary: In this study, a Fe2O3 photoanode was designed and constructed by sequential in-situ and ex-situ doping to effectively improve the photoelectrochemical water splitting activity. The in-situ Zr doping improved the bulk conductivity and generated surface defects, while the ex-situ Be doping enhanced the surface charge transfer properties. The Co-Pi cocatalyst-coated Zr/Be-HT photoanode achieved substantial hydrogen and oxygen gas production, making this codoping strategy a promising method for sustainable and efficient hydrogen fuel production.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Engineering, Environmental
Ho Sub Bae, Ruturaj P. Patil, Jun Ha Hwang, Mahadeo A. Mahadik, Min Seok Song, Weon-Sik Chae, Velu Manikandan, Jum Suk Jang
Summary: We synthesized cobalt oxide loaded Rh/Sb:SrTiO3-nanocube photocatalysts and demonstrated their effectiveness in organic dye degradation and bacterial inactivation. The photocatalysts showed high degradation efficiency for Orange II dye and bisphenol A under visible-light irradiation, as well as high bacterial inactivation efficiency for Staphylococcus aureus and Escherichia coli. The enhanced activity was attributed to delayed charge recombination, generation of oxygen vacancies, and the synergistic effect of a metallic Co/CoOx phase. Furthermore, radical trapping experiments confirmed the involvement of O-center dot(2)- and h(+) in the degradation of Orange II.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
In-Seon Hwang, Mahadeo A. Mahadik, Min Seok Song, Se-Won Lee, Byung-Taek Oh, Hyun Hwi Lee, Weon-Sik Chae, Sun Hee Choi, Jum Suk Jang
Summary: The ultrafast synthesis of WO3 nanosheet array photoanode on fluorine-doped tin oxide-coated glass without a seed layer by microwave-assisted deposition route is reported. The tailored WO3 morphologies with a monoclinic structure were achieved through various microwave deposition cycles. The growth mechanism and the effect of morphology tuning on the photoelectrochemical activities of WO3 photoanodes were studied.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Periyasamy Anushkkaran, Mahadeo A. Mahadik, Weon-Sik Chae, Hyun Hwi Lee, Sun Hee Choi, Jum Suk Jang
Summary: This study presents a one-step hydrothermal route for the design of surfactant-assisted in situ Au nanoparticles-integrated Zr-doped Fe2O3 photoanodes for highly effective catalytic activity in PEC water splitting. The combination of CTAB surfactant and Au-incorporated Zr-doped Fe2O3 photoanode achieved a high photocurrent density, while the loaded Au nanoparticles enhanced the separation of photo-generated electron-hole pairs and improved photocatalytic activity. Furthermore, the addition of a NiCo(OH)(x) co-catalyst further enhanced the PEC performance.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Jun Beom Hwang, Mahadeo A. Mahadik, Periyasamy Anushkkaran, Sun Hee Choi, Weon-Sik Chae, Manish Kumar, H. M. Pathan, Hyun Hwi Lee, Jum Suk Jang
Summary: A microwave-assisted deposition technique with systematic surface and underlayer modification is presented to address the recombination issue in hematite photoanodes. The combination of a TiO2 underlayer, microwave-assisted Fe2O3 formation, and in situ and ex situ ZrO2 deposition effectively achieved a high photocurrent density. Furthermore, Zr doping, ZrO2 surface passivation, and the TiO2 underlayer reduced the resistance and promoted the PEC water splitting.
SUSTAINABLE ENERGY & FUELS
(2023)
