Article
Multidisciplinary Sciences
Yun Lu, Sujun Guan, Liang Hao, Hiroyuki Yoshida, Shohei Nakada, Taisei Takizawa, Takaomi Itoi
Summary: The study found that a coating primarily composed of titanium dioxide (TiO2) has significant inactivation effects on both SARS-CoV-2 and influenza viruses, while effectively degrading harmful substances such as acetaldehyde and formaldehyde. This discovery is of great importance for curbing the spread of the pandemic and creating safe working environments.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Physical
Sinqobile V. L. Mahlaba, Nasseela Hytoolakhan Lal Mahomed, Gerard M. Leteba, Alisa Govender, Eric van Steen
Summary: Platinum-based catalysts can selectively produce formaldehyde through the direct aerobic oxidation of methane in the presence of liquid water. The choice of support material significantly affects the catalyst's activity and product selectivity. Pt/TiO2-Rutile demonstrates high selectivity for formaldehyde formation, while TiO2-P25 leads to the formation of methanol and methoxymethanol. Catalyst deactivation is observed due to the accumulation of polymeric species on the surface.
Article
Multidisciplinary Sciences
Yun Lu, Sujun Guan, Liang Hao, Hiroyuki Yoshida, Shohei Nakada, Taisei Takisawa, Takaomi Itoi
Summary: This article introduces a photocatalytic degradation method for novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). By coating the -TiO2/Ti photocatalyst coating, the spread of SARS-CoV-2 and influenza virus can be effectively inhibited, and harmful substances such as formaldehyde and acetaldehyde can be degraded.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Physical
Haocheng Wu, Yuanbo Song, Yidan Liu, Guoli Chen, Mengmeng Zhang, Rongrong Jia, Yun Ling, Yili Shi, Xiang Wang, Lei Huang
Summary: By increasing the irradiation intensity, the interaction between Pt and TiO2 is strengthened, resulting in enhanced activity for HCHO oxidation. The balanced electronic and spatial structure promote the activation of oxygen species, facilitating both the conversion of dioxymethylene to HCOO- and the subsequent decomposition of HCOO-.
JOURNAL OF CATALYSIS
(2023)
Article
Chemistry, Physical
Haibin Yin, Zhengtian Pu, Jiawei Xue, Peiyu Ma, Bo Wu, Mei Han, Hongfei Lin, Zhengtang Luo, Jie Zeng, Xinlong Ma, Hongliang Li
Summary: TiO2 nanorods with abundant oxygen vacancies enable the mild oxidation of methane by H2O2 into formaldehyde without light irradiation. The activity of TiO2 nanorods increases with the concentration of oxygen vacancies. The reaction intermediates and reaction scheme were identified based on catalytic and spectroscopic data.
Article
Chemistry, Physical
Muhua Chen, Weizhen Wang, Yuping Qiu, He Wen, Guangyao Li, Zhiqing Yang, Ping Wang
Summary: This study experimentally identified the active sites in HCHO oxidation over TiO2-supported Pt catalysts and revealed the cooperative mechanism involved.
Article
Chemistry, Physical
Yue-yin Sun, Qiong Huang, Jie Zhou, Xiao-meng Yu, Ming-yang Gu, Li-rui Xu, Bo Yang, Da-wei Li, Min-dong Chen, Tao Tao, Hong Yang
Summary: This study investigated the effect of Ag-Bi co-modified nanostructured TiO2 on the photodegradation of gaseous formaldehyde (HCHO). The synthesized Ag/Bi-TiO2 materials were characterized and their performance under visible-light irradiation was found to be significantly influenced by the amount of Ag doping, the calcination temperature, and the air contact area. The results showed that higher Ag doping greatly enhanced the degradation of HCHO, with the photocatalytic degradation efficiency reaching 87.5% for 2%Ag/Bi-TiO2.
APPLIED CATALYSIS A-GENERAL
(2023)
Article
Chemistry, Physical
Malick Diedhiou, Paul M. Mayer
Summary: This study investigated the dissociation of protonated forms of methyl, ethyl, isopropyl, tert-butyl, and phenylformate using tandem mass spectrometry. These formate-derived esters can undergo various chemical reactions in the atmosphere, with different ions producing distinct fragmentation products via proton transfer and oxidation reactions. Density functional theory and CBS-QB3 single-point energy calculations were utilized to explore the minimum energy reaction pathways for each ion, providing reliable energetics.
JOURNAL OF PHYSICAL CHEMISTRY A
(2021)
Article
Chemistry, Physical
Wibawa Hendra Saputera, Tze Hao Tan, Emma C. Lovell, Aditya Rawal, Kondo-Francois Aguey-Zinsou, Donia Friedmann, Rose Amal, Jason A. Scott
Summary: Binary TiO2/SiO2 oxides were synthesized as supports for a Pt catalyst, with varying mole ratios of silica. Increasing the TiO2 : SiO2 ratio led to changes in specific surface area, crystal structure, and defect sites, affecting the catalytic performance for formic acid oxidation under dark conditions and following UV light pre-treatment. The Pt/1TiO(2)-2SiO(2) catalyst exhibited the highest catalytic rate, attributed to the simultaneous presence of PtOads and defect sites following UV-light pre-treatment.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Lv Shenjie, Hua Zelin, Ma Na, Guo Zhi, Shi Kangzhong, Wei Tongtong, Li Long, Li Licheng
Summary: A facile high-pressure steam treatment was developed to improve the formaldehyde oxidation performance of Pt/TiO2 catalyst. The treated catalyst showed a 4.8 times increase in formaldehyde oxidation rate compared to the pristine catalyst, along with good catalytic stability and resistance to dry environments. The treatment did not alter the structural parameters of Pt and TiO2, but resulted in the formation of a layer of bound water on the surface of Pt nanoparticles. This modification enhanced the interaction between oxygen species and surface hydroxyl, leading to accelerated reaction steps and improved low temperature HCHO oxidation performance.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Yuanbo Song, Hongyun Du, Haocheng Wu, Liyi Shi, Dongqi Yu, Rongrong Jia, Chirawat Chitpakdee, Supawadee Namuangruk, Lei Huang
Summary: A new method was developed to fabricate highly dispersed dual Au-Pt alloy on TiO2, showing excellent catalytic oxidation performance for HCHO. The alloyed Au-Pt facilitates oxygen adsorption and dissociation, promoting rapid oxidation of formaldehyde with reduced reaction barrier.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Environmental
Xiaomin Wu, Shaodi Sun, Ruichen Wang, Zhiwei Huang, Huazheng Shen, Huawang Zhao, Guohua Jing
Summary: The strategy of anchoring stable Pt single atoms by abundant oxygen vacancies over TiO2-nanosheet-assembled hierarchical spheres (Pt-1/TiO2-HS) was designed to eliminate HCHO. A superior HCHO oxidation activity and CO2 yield (similar to 100% CO2 yield) at relative humidity (RH) > 50% over Pt-1/ TiO2-HS is achieved for long-term run. The excellent HCHO oxidation performance is attributed to the stable isolated Pt single atoms anchored on the defective TiO2-HS surface.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Shaodi Sun, Xiaomin Wu, Zhiwei Huang, Huazheng Shen, Huawang Zhao, Guohua Jing
Summary: In this study, defective two-dimensional (2D) TiO2 nanosheets were synthesized and Pt nanoclusters were successfully anchored through the strong metal-support interaction (SMSI), resulting in excellent activity and stability for room temperature oxidation of formaldehyde.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Alexander Grasruck, Giorgio Parla, Lisha Lou, Jens Langer, Christian Neiss, Alberto Herrera, Sybille Friess, Andreas Goerling, Guenter Schmid, Romano Dorta
Summary: Cu(I)-Hydrido complexes stabilized by electrostatic interactions can react with CO2 at low temperature to form Cu(I)-formates.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Huimin Liu, Chenyi Yuan, Shipeng Wu, Chao Sun, Zhen Huang, Hualong Xu, Wei Shen
Summary: In this study, a nanoflower-like TiO2-supported Pd catalyst was developed with a higher concentration of oxygen vacancies and surface hydroxyl groups. The distinctive structure of the nanoflower-like TiO2 resulted in improved dispersion and stabilization of Pd species, as well as the activation of CO and O-2 molecules. As a result, the catalyst exhibited remarkable efficiency and stability in low-temperature CO oxidation reaction.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Bolun Yu, Denan Li, Qianqian Zhu, Shufan Yao, Lifeng Zhang, Yanshuo Li, Zhenxin Zhang
Summary: This study successfully improved the catalytic activity of a zeolitic octahedral metal oxide by incorporating a single zinc species into its micropore. The zinc incorporation achieved a high ethane conversion rate and ethylene selectivity. Mechanism study showed that the isolated zinc site played a crucial role in activating oxygen and ethane, as well as stabilizing intermediates and transition states.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Ruoqi Liu, Hao Fei, Jian Wang, Ting Guo, Fangyang Liu, Zhuangzhi Wu, Dezhi Wang
Summary: This work successfully synthesized a high-performing S-enriched MoS2 catalyst for electrocatalytic nitrogen reduction reaction (NRR), demonstrating high activity and selectivity. The synergistic effect of the 1T phase and bridging S22- species was shown to play a positive role in NRR performances, and DFT calculations revealed the mechanism behind the improved performance.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Pan Xia, Lele Zhao, Xi Chen, Zhihong Ye, Zhihong Zheng, Qiang He, Ignasi Sires
Summary: This study presents a modified gas-diffusion electrode (GDE) for highly efficient and stable H2O2 electrosynthesis by using trace polymethylhydrosiloxane (PMHS). DFT calculations provide an in-depth understanding of the roles of PMHS functional groups.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Kwangchol Ri, Songsik Pak, Dunyu Sun, Qiang Zhong, Shaogui Yang, Songil Sin, Leliang Wu, Yue Sun, Hui Cao, Chunxiao Han, Chenmin Xu, Yazi Liu, Huan He, Shiyin Li, Cheng Sun
Summary: Different B-doped rGO catalysts were synthesized and their 2e- oxygen reduction reaction (ORR) performance was investigated. It was found that the 2e- ORR selectivity of B-doped rGO was influenced by the B content and oxygen mass transfer conditions. The synthesized catalyst exhibited high 2e- ORR selectivity and was capable of degrading organic pollutants continuously.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Li Lv, Lin Lei, Qi-Wen Chen, Cheng-Li Yin, Huiqing Fan, Jian-Ping Zhou
Summary: Monoclinic phase La2Ti2O7 and orthorhombic phase Bi4Ti3O12 are widely used in photocatalysis due to their layered crystal structure. The electronic structures of these phases play a crucial role in their photocatalytic activity. Heat treatment in a nitrogen atmosphere introduces more oxygen vacancies into the S-scheme heterojunction, leading to enhanced NO removal efficiency.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Choe Earn Choong, Minhee Kim, Jun Sup Lim, Young June Hong, Geon Joon Lee, Keun Hwa Chae, In Wook Nah, Yeomin Yoon, Eun Ha Choi, Min Jang
Summary: In this study, the synergistic effect between argon-plasma-system (AP) and catalysts in promoting the production of reactive species for water remediation was investigated. By altering the oxygen vacancies concentration of CeO2/Bi2O3 catalyst, the production of hydrated electrons was stimulated for PFOA removal. The results showed that the built-in electric field in the Bi/Ce0.43 interface enhanced electron migration and eaq- generation, leading to improved PFOA removal efficiency.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Yushan Wu, Di Xu, Yanfei Xu, Xin Tian, Mingyue Ding
Summary: Efficient synthesis of primary amines from carbonyl compounds was achieved via reductive amination using Ru@NC-Al2O3 as a catalyst, exhibiting high activity and selectivity under mild conditions.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Yilan Jiang, Peifang Wang, Tingyue Chen, Keyi Gao, Yiran Xiong, Yin Lu, Dionysios D. Dionysiou, Dawei Wang
Summary: By controlling the content of Co and Ni in Co1-xNixFe2O4, the production of O-1(2) from H2O2 can be regulated. NiFe2O4, with the lowest lattice distortion degree, can efficiently produce O-1(2) as the dominant reactive oxygen species. The system also exhibits significant resistance to water matrix interference.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Shuai Feng, Donglian Li, Hao Dong, Song Xie, Yaping Miao, Xuming Zhang, Biao Gao, Paul K. Chu, Xiang Peng
Summary: In this study, MoO2/Mo2N heterostructures were prepared by regulating the coordination of Mo atoms. The electrocatalyst exhibits high current density and excellent stability for hydrogen evolution reaction.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Jia-Cheng E. Yang, Min -Ping Zhu, Daqin Guan, Baoling Yuan, Darren Delai Sun, Chenghua Sun, Ming-Lai Fu
Summary: This study successfully modulated the electron configuration and spin state of millimetric metal catalysts by adjusting the support curvature radius. The electronic structure-oriented spin catalysis was found to affect the degradation of pollutants, providing new insights for the design and production of highly active, reusable, and stable catalysts.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Tao Zhong, Su Tang, Wenbin Huang, Wei Liu, Huinan Zhao, Lingling Hu, Shuanghong Tian, Chun He
Summary: In this study, a highly efficient photocatalyst for the elimination of CH3SH was developed by engineering different crystal facets and coupling them with PHI. Cu (111)/PHI exhibited the highest elimination efficiency and showed good stability and reusability. The enhanced surface electron pump effect and effective adsorption mechanisms were revealed through comprehensive characterizations and DFT calculations.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Feifei Yang, Tianyu Zhang, Jiankang Zhao, Wei Zhou, Nicole J. Libretto, Jeffrey T. Miller
Summary: A Ni3Sn intermetallic nano particle was found to have geometrically isolated Ni sites that could selectively cleave C-O bonds in biomass derivatives. This nano particle showed high activity and selectivity towards 2-methylfuran, unlike Ni nanoparticles that produced other unwanted products derived from the aromatic rings.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
Article
Chemistry, Physical
Lulu Qiao, Di Liu, Anquan Zhu, Jinxian Feng, Pengfei Zhou, Chunfa Liu, Kar Wei Ng, Hui Pan
Summary: This study reveals that surface evolution plays a crucial role in enhancing the electrocatalytic performance of transition metal oxides for electrochemical nitrate reduction reaction (e-NO3RR). Incorporating nickel into Co3O4 can promote surface reconstruction and improve the adsorption of intermediates and reduce energy barriers, leading to enhanced catalytic performance. The reconstructed cobalt-nickel hydroxides (CoyNi1_y(OH)2) on the catalyst's surface serve as the active phase.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
Article
Chemistry, Physical
Xinyu Song, Yang Shi, Zelin Wu, Bingkun Huang, Xinhao Wang, Heng Zhang, Peng Zhou, Wen Liu, Zhicheng Pan, Zhaokun Xiong, Bo Lai
Summary: This study explores the discriminative activities and mechanisms for activation of O-O bond in peroxy compounds via single-atom catalysts (SACs) with higher coordination numbers (M-N5). The atomic catalyst (Fe-SAC) with Fe-N5 as the active center was constructed, effectively activating peroxymonosulfate (PMS), peroxydisulfate (PDS), and hydrogen peroxide (H2O2). The study demonstrates the degradation efficiencies of acyclovir are related to the O-O bond length in different peroxy compounds, and reveals the discriminative mechanisms for activation of O-O bond in different Fenton-like systems.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
Article
Chemistry, Physical
Yangzhuo He, Hong Qin, Ziwei Wang, Han Wang, Yuan Zhu, Chengyun Zhou, Ying Zeng, Yicheng Li, Piao Xu, Guangming Zeng
Summary: A dual-metal-organic framework (MOF) assisted strategy was proposed to construct a magnetic Fe-Mn oxycarbide anchored on N-doped carbon for peroxymonosulfate (PMS) activation. The FeMn@NC-800 catalyst exhibited superior activity with almost 100% degradation of sulfamethazine (SMZ) in 30 minutes. The study provided insights for the rational design of high-performance heterogeneous catalysts and proposed a novel nonradical-based catalytic oxidation for environmental cleaning.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)