Article
Materials Science, Multidisciplinary
Hongqi Shi, Zhaowen Liu, Jiajia Chen, Lei Cui, Zuchun Wang, Yilong Luo, Jian Zhang
Summary: With the development of industry, environmental pollution is becoming more serious. Using photocatalysts to degrade pollutants could help alleviate this problem. In this study, a nanostructured perovskite Sr2Bi4Ti5O18 was prepared and used as a photocatalyst to degrade organic pollutants. The hydrothermal temperature was found to greatly affect the photocatalytic activity of Sr2Bi4Ti5O18, with the sample prepared at 180 degrees C showing the highest degradation rate. This work demonstrates the potential of Sr2Bi4Ti5O18 as a new layered perovskite photocatalyst for environmental applications.
JOURNAL OF MATERIALS SCIENCE
(2023)
Review
Chemistry, Physical
Zuzeng Qin, Jing Wu, Bin Li, Tongming Su, Hongbing Ji
Summary: The review highlights the latest developments in ultrathin layered photocatalysts for CO2 reduction by introducing the mechanism of photocatalytic reduction of CO2 and explaining the factors influencing product selectivity. It also classifies existing catalysts, summarizes prevalent preparation methods, and introduces strategies for improving photocatalyst performance while maintaining its layered structure. Future opportunities and challenges of ultrathin layered photocatalysts for carbon dioxide reduction are also proposed.
ACTA PHYSICO-CHIMICA SINICA
(2021)
Article
Energy & Fuels
Li-Yuan Wu, Meng-Ran Zhang, You-Xiang Feng, Wen Zhang, Min Zhang, Tong-Bu Lu
Summary: This study synthesized 2D MHP nanosheets for use as photocatalysts in CO2 reduction reactions, demonstrating improved stability and performance. By modulating the halide component, these nanosheets achieved a significantly higher electron consumption rate compared to traditional MHP NCs.
Article
Chemistry, Multidisciplinary
Bojing Sun, Dingge Fan, Xiaoyu Chen, Zhenzi Li, Wei Zhou, Yuncehn Du
Summary: In this study, ultrathin Al-doped ZnIn2S4 nanosheets were successfully fabricated and demonstrated effective production of H2 and O2 in pure water. The introduction of Al atoms not only adjusted the electronic configuration and improved the carrier density, but also enhanced the separation efficiency of photogenerated charge carriers. Furthermore, the positive charge enriched Al atoms promoted the adsorption of H2O molecules and facilitated the oxygen evolution reaction (OER) process. The results highlight the high photocatalytic activity of Al-doped ZnIn2S4 nanosheets compared to other single-component photocatalysts.
MATERIALS CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Multidisciplinary
Kai Lin, Xiaoyi Dong, Liang Xu, Qi Wang, Jiajing Wang, Yongjin Li, Zhaoyi Yin, Jin Han, Jianbei Qiu, Zhiguo Song
Summary: Researchers have successfully prepared a novel layered perovskite photocatalyst Bi2NdO4Cl (BNOC) via solid-state reaction. The piezoelectricity of BNOC was confirmed, and its piezo-photocatalytic degradation performance was evaluated for the first time. The results show a synergy enhancement with a degradation rate constant about 1.5 times higher than the sum of individual photo and piezo-catalytic components. This study may contribute to the development of novel piezoelectric photocatalytic materials and provide insights for piezo-photocatalysis in environmental applications.
Article
Chemistry, Multidisciplinary
Dhirendra Sahoo, Jyoti Shakya, Nasir Ali, Won Jong Yoo, Bhaskar Kaviraj
Summary: This study investigates the photocatalytic performance of MoS2 nanoflowers synthesized using a hydrothermal method for dye degradation under visible light irradiation. The ultrathin-layered nanoflowers showed faster degradation rates and good stability, indicating their potential as effective catalysts for industrial wastewater treatment.
Review
Chemistry, Multidisciplinary
Zhijie Zhang, Rui Zhou, Deben Li, Ying Jiang, Xuesheng Wang, Huiling Tang, Jiayue Xu
Summary: Due to its environmental cleanliness and high energy density, hydrogen is considered a promising alternative to fossil fuels. Photocatalytic water-splitting using semiconductor materials shows great potential for renewable solar energy utilization in hydrogen production. Recently, halide perovskite nanocrystals (NCs) have emerged as a fascinating nanomaterial with attractive optoelectronic properties for light harvesting and photocatalytic applications. This review summarizes the recent progress in using halide perovskite NCs for photocatalytic hydrogen evolution, focusing on strategies to improve their performance. The scientific challenges and future perspectives for halide perovskite photocatalysts are also discussed.
Article
Chemistry, Multidisciplinary
Xiuyan Cheng, Jianling Zhang, Lifei Liu, Lirong Zheng, Fanyu Zhang, Ran Duan, Yufei Sha, Zhuizhui Su, Fei Xie
Summary: This study demonstrates the highly efficient photocatalytic sulfide oxidation reaction using ultrathin C,N-TiO2 nanosheets as a photocatalyst under mild conditions, such as in air and at room temperature, without the need for a sacrificial reagent, co-catalyst, or redox mediator.
Article
Chemistry, Physical
Zhipeng Zhang, Bingzhe Wang, Hai-Bing Zhao, Jin-Feng Liao, Zi-Chun Zhou, Tanghao Liu, Bingchen He, Qi Wei, Shi Chen, Hong-Yan Chen, Dai-Bin Kuang, Ying Li, Guichuan Xing
Summary: Lead-free double perovskite Cs2AgBiBr6 nanocrystals (NCs) were assembled on the surface of MXene nanosheets through mutual electrostatic attraction. The presence of MXene nanosheets promoted the formation of free charge carriers in Cs2AgBiBr6 NCs and extended their lifetime through ultrafast photo-generated electron transfer. The heterostructures exhibited a high photoelectron consumption yield for photocatalytic CO2 reduction.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Multidisciplinary
Ruifeng Du, Baoying Li, Xu Han, Ke Xiao, Xiang Wang, Chaoqi Zhang, Jordi Arbiol, Andreu Cabot
Summary: The combination of ultrathin 2D g-C3N4 nanosheets and TiO2 nanoparticles through electrostatic self-assembly method can achieve outstanding photocatalytic performance with effective charge separation and transport properties, leading to significantly enhanced hydrogen evolution activity.
Article
Chemistry, Inorganic & Nuclear
Weijie Yang, Xiang Wang, Zhiqiang Wang, Peipei Sun, Jiaqi Tang, Juan Li, Dong-Sheng Li, Tao Wu
Summary: By pyrolyzing a mixture of oxygen-containing zinc sulfide clusters and CdCl2 salts, we synthesized an O-i-doped CdxZn1-xS solid solution. The unique energy band structure of this solid solution contributes to its good PHE performance.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Engineering, Environmental
Xiao Zhang, Yun Zhang, Zhenyu Feng, Jingmei Zhao, Zhimin Yang, Xu Wang, Wenshou Wang
Summary: This study presents a fast light-responsive color switching and highly reversible inorganic PCSM based on ultrathin BiOBr nanosheets with oxygen vacancies. The nanocomposite film composed of BiOBr ultrathin nanosheets and agarose demonstrates outstanding photoreversible color switching properties, including coloration in 1 min under UV illumination, decoloration in 15 min in ambient air, and high reversibility.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Chenxu Miao, Yongzheng Fang, Kai Zhu, Chunliang Zhou, Ke Ye, Jun Yan, Dianxue Cao, Guiling Wang, Panpan Xu, Chunling Xie
Summary: A binder-free ultrathin alpha-MnSe nanosheets electrode was prepared and exhibited high capacity, good rate capability, and long-term durability. Moreover, an asymmetric supercapacitor fabricated by alpha-MnSe anode and active carbon cathode showed high energy density and satisfying cycle performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Environmental
Xuandong Wang, Jie He, Liang Mao, Xiaoyan Cai, Chuanzhi Sun, Mingshan Zhu
Summary: Immobilizing CsPbBr3 onto monolayer MoS2 nanosheets to form CsPbBr3/MoS2 heterostructures enhances charge separation efficiency, leading to increased yields for methane and carbon monoxide in CO2 photoreduction. This new approach provides a promising strategy for fabricating highly efficient perovskite-based photocatalysts in solar-energy-driven applications.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Zhijie Zhang, Mengyang Shu, Ying Jiang, Jiayue Xu
Summary: The study demonstrates the design and fabrication of a C60/CsPbBr3 composite as an efficient and stable photocatalyst for visible-light-driven CO2 reduction, achieving significantly improved CO2 photoreduction activity. This work provides an effective strategy for constructing halide perovskite-based composite systems with enhanced photocatalytic performance, with potential applications in artificial photosynthesis.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Materials Science, Ceramics
Hanbyeol Cho, Yeonghun Yun, Won Chang Choi, In Sun Cho, Sangwook Lee
Summary: This study reports a novel mechanochemical synthesis method for tin iodide-based double perovskite materials, and investigates their structural, optical, and electrical properties. The addition of hydrogen iodide during the ball-milling process is found to minimize secondary phase formation in the synthesized powders. The findings provide essential information for improving the understanding of halide perovskite materials and developing efficient lead-free perovskite photoelectric devices.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Seunghwan Lee, Sehun Jung, Sungeun Yang, Jong-Ho Lee, Hyunjung Shin, Joosun Kim, Sangbaek Park
Summary: This study utilizes a bilayer thin-film as an interlayer in solid-state lithium batteries to address both chemical and mechanical interfacial issues, leading to improved capacity and cycle life. The research also identifies two degradation mechanisms and highlights the potential of this modified solid electrolyte for commercialization.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Ceramics
Yoo Jae Jeong, Seo Yeong Hong, In Sun Cho
Summary: A nanorods-axial-heterostructure (NAH) consisting of BiVO4 nanorods and Sb-doped SnO2 nanorods was synthesized using a facile solution-based method. The NAH exhibited excellent charge collection and achieved higher photocurrent density, Faradaic efficiency, and long-term stability compared to pristine BiVO4 film, indicating the superiority of axial heterostructures as a design platform for efficient photoelectrodes.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Applied
Donghee Gu, Hyoungchul Kim, Jong-Ho Lee, Sangbaek Park
Summary: This study systematically investigates the effect of the surface roughness of current collectors (CCs) on the lithium plating/stripping behavior in anode-free all-solid-state batteries (AFASSBs). The results show that moderately roughened CCs can significantly improve the Coulombic efficiency and cycle stability, while excessively roughened CCs deteriorate the performance. An ex situ interface analysis reveals that the roughened surface can suppress interfacial degradation. These findings provide guidelines for designing advanced current collectors in AFASSBs.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Yoo Jae Jeong, Dong Hyun Seo, Ji Hyun Baek, Min Je Kang, Bit Na Kim, Sung Kyu Kim, Xiaolin Zheng, In Sun Cho
Summary: Crystal reconstruction significantly improves charge transport efficiency for photoelectrochemical water splitting, providing a new pathway for developing efficient photoelectrodes.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
In Sun Cho
Summary: A series of divalent metal orthophosphate compounds were synthesized and their densification behavior, optical properties, and dielectric properties were investigated. The orthophosphate ceramics exhibited low dielectric constants and high-quality factor values, and the differences in their dielectric properties could be explained by chemical bonding.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Chemistry, Multidisciplinary
Hyunseok Yoon, Hee Jo Song, Bobae Ju, Kunik Jang, Dong-Wan Kim
Summary: The proton-exchange membrane fuel cell is a promising technology, but the scarcity of platinum is a barrier to its commercialization. A synthetic strategy was proposed to produce highly active Pt-Mo solid-solution alloy nanoparticles. These nanoparticles do not require organic surfactants or reducing agents, and exhibit high mass activity and excellent durability.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Jiwoong Ham, Sangbaek Park, Nari Jeon
Summary: Composites of conductive polymers (CP) and metal oxides (MO) have been studied extensively in the past decade due to their unique electronic, electrochemical, catalytic, and mechanical properties. In this study, a novel method for synthesizing composite films of polyaniline (PANI) and indium oxide (InOx) with high electrical conductivities was proposed. The composite films consisted of two phases with graded concentration: InOx with oxygen vacancies and PANI with partially protonated molecular units. The PANI-InOx composite films exhibited enhanced electrochemical activity and efficient ion diffusion due to the open interfacial regions between the InOx and PANI phases.
Article
Chemistry, Multidisciplinary
Arumugam Sivanantham, Hansung Lee, Sung Won Hwang, Han Uk Lee, Sung Beom Cho, Byungmin Ahn, In Sun Cho
Summary: This study investigates the active role of vanadium in improving the electrocatalytic activity for the hydrogen evolution reaction in VxCuCoNiFeMn (x = 0, 0.5, and 1.0) high entropy alloys. The incorporation of vanadium enhances the electrical conductivity and electrochemical surface area of the alloy, leading to improved kinetics for the reaction. The findings can contribute to the development of highly active high entropy alloys for large-scale electrochemical water splitting.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Balasubramanian Jansi Rani, Arumugam Sivanantham, In Sun Cho
Summary: This review summarizes the impact of nanostructured morphologies on the electrochemical performance of spinel manganates. It is found that nanostructured spinel manganates with preferred A-site cation significantly improve the thermodynamics and electrochemical reaction kinetics at solid-liquid and solid-solid interfaces. Particularly, the faceted, hollow, 1D nanostructured CoMn2O4 and its nanocomposites exhibit outstanding electrochemical performance. Feasible methods of synthesizing AMO nanostructures and nanocomposites are also discussed in this review. These insights are expected to contribute to the development of efficient electrode materials for energy conversion and storage devices.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Energy & Fuels
Dongjoo Park, Sangbaek Park, Dong-Wan Kim
Summary: We developed a biodegradable separator made from natural cellulose with a fibrous and porous structure rich in polar functional groups. These functional groups enhance electrolyte wettability, polysulfide adsorption, and lithium affinity, thus improving the performance of Li-S batteries.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Bobae Ju, Hee Jo Song, Hyunseok Yoon, Do Kyung Kim, Hye Won Jin, Taeho Lim, Dong-Wan Kim
Summary: This study investigates the role and mechanism of metal carbonyls in the synthesis of PtMoCu NPs. By controlling the Mo(CO)(6) source and analyzing reaction intermediates, it is proved that sufficient Pt-organic complexes are essential for the formation of ultrafine monodispersed PtMoCu NPs. The PtMoCu/C catalyst with low Pt content shows higher ORR activity and stability compared to PtMoCu-SCR/C and benchmark Pt/C.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Youngho Kim, Noeul Kim, Sang Hoon Lee, Seok-Ki Hyeong, Jae-Hyun Lee, Jaeyeong Lee, Jong Seong Bae, In Sun Cho, Jae-Young Choi, Soo Young Kim, Hak Ki Yu
Summary: The development of technologies for electromagnetic wave contamination has attracted attention. For high frequencies such as those in the K and K-a ranges, there is a limitation in using only one material. To address this, it is necessary to increase the absorption coefficients by increasing the path of electromagnetic waves using internal scattering. This study accurately demonstrated the role of Sn in the growth of indium tin oxide (ITO) nano-branch structure, resulting in high-density ITO nano-branches with the thinnest possible thickness. With shielding efficiencies of 21.09 dB (K band) and 17.81 dB (K-a band), it is expected to be applied in various fields due to its high specific shielding efficiency, low thickness, and weight.
Article
Chemistry, Physical
Balasubramanian Jansi Rani, Arumugam Sivanantham, Tatachari Santhanagopalan Shridharan, Tan Runfa, In Sun Cho
Summary: Facet engineering, specifically the synthesis of faceted CuMn2O4 nanoparticles, enhances the electrocatalytic water splitting activity by exposing desired crystal planes and introducing oxygen vacancies. The f-CMO nanoparticles showed superior hydrogen evolution reaction activity compared to non-f-CMO nanoparticles, demonstrating the importance of facet formation in developing efficient electrocatalysts for water splitting.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Engineering, Environmental
Hoyeol Jeon, Deok-Hwang Kwon, Hyoungchul Kim, Jong-Ho Lee, Yongseok Jun, Ji-Won Son, Sangbaek Park
Summary: The shape and exposed crystal facet of cathode particles have important effects on the electrochemical performance of all-solid-state batteries, with specific shapes of cathode particles potentially enhancing the rate capability of the battery.
CHEMICAL ENGINEERING JOURNAL
(2022)
