Article
Chemistry, Physical
Yiru Zou, Chao Wang, Hanxiang Chen, Haiyan Ji, Qian Zhu, Wenshu Yang, Linlin Chen, Zhigang Chen, Wenshuai Zhu
Summary: In this study, V2O5 nanoparticles with oxygen vacancies were successfully prepared using a facile ball milling strategy, showing remarkable sulfur removal efficiency for fuel oils, with sulfur removal reaching up to 99.7%.
GREEN ENERGY & ENVIRONMENT
(2021)
Article
Engineering, Chemical
Md. Mahmudul Hassan Mondol, Chul-Ung Kim, Chang Min Kim, Sung Hwa Jhung
Summary: ZrO2 supported on porous N-doped carbon (ZrO2@CN) with oxygen vacancy was prepared via carbonization of a composite of metal-azolate framework (MAF-6) and zirconium chloride (ZrCl4). The catalyst, ZrO2(2)@CN, exhibited high activity in oxidative desulfurization (ODS) with good recyclability, attributed to the effective production of & BULL;OH species through the synergy between Zr atom with O vacancy and N of carbon support for H2O2 activation. Therefore, ZrO2, especially ZrO2@CN with oxygen vacancy, can be suggested as a promising ODS catalyst.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Review
Chemistry, Multidisciplinary
Ubong J. Etim, Chenchen Zhang, Ziyi Zhong
Summary: CO2 activation requires active sites on catalyst surfaces, with oxygen vacancies or defect sites playing a significant role in promoting CO2 transformation reactions.
Article
Nanoscience & Nanotechnology
Ming Zhang, Wanying Liao, Yanchen Wei, Chao Wang, Yujie Fu, Yongkang Gao, Linhua Zhu, Wenshuai Zhu, Huaming Li
Summary: In this study, 3DOM WOx-400 catalysts with abundant oxygen defects and high desulfurization activity were successfully prepared, achieving over 99% aerobic oxidative desulfurization rate within 4 hours. The material showed potential for recycling and efficient desulfurization, providing a feasible route for developing nanoporous materials for fuel desulfurization.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Physical
Chang Deng, Peiwen Wu, Hongping Li, Haonan Zhu, Yanhong Chao, Duanjian Tao, Ziran Chen, Mingqing Hua, Jixing Liu, Jianjun Liu, Wenshuai Zhu
Summary: In this study, a unique 26-faceted polyhedral high entropy oxide catalyst with highly active site exposure was fabricated using a mechanochemistry-assisted strategy. The catalyst exhibited more oxygen vacancies and the high-index facets facilitated the adsorption and activation of oxygen, leading to significantly enhanced oxidation activity of organic sulfides.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Applied
Keran Wang, Lei Luo, Chao Wang, Junwang Tang
Summary: Upgrading methane into liquid oxygenates at mild conditions is important for sustainable energy and a clean environment, but it is challenging to achieve high activity and selectivity. In this study, tungsten oxide modified with palladium nanoparticles and oxygen vacancies was used as dual reaction sites for methane conversion with oxygen at room temperature. The optimized photocatalyst showed a significant improvement in oxygenates production, with a high selectivity towards primary products. In-situ XPS and solid-state EPR spectra provided evidence of the role of palladium nanoparticles and oxygen vacancies in facilitating the charge separation and achieving superior activity and selectivity.
CHINESE JOURNAL OF CATALYSIS
(2023)
Article
Chemistry, Inorganic & Nuclear
Yefeng Liu, Xiaojie Yin, Chuan Li, Zhong Xie, Fuyan Zhao, Jing Li, Jinpei Hei, Yang Han, Nannan Wang, Peng Zuo
Summary: A high-performance catalyst was prepared by encapsulating oxygen vacancy silicotungstic acid into magnetic N-doped carbon microspheres through one-step air pyrolysis. The catalyst exhibited excellent catalytic activity and dispersibility, as well as a high number of exposed active sites. It showed significant turnover frequency and low activation energy in oxidative desulfurization, and the involvement of HO radical was confirmed by experiments. The catalyst can be conveniently separated and recycled by magnetic separation.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Physical
Xudong Yang, Fan Li, Wen Liu, Long Chen, Juanjuan Qi, Weiliang Sun, Fei Pan, Tao Duan, Fengbin Sun
Summary: Tungsten oxide nanowires (WO3_x) with rich oxygen vacancies (OVs) were prepared through a hydrothermal method, demonstrating high adsorption capacity and photocatalytic activity. The WO3_x successfully removed 95.1% of U(VI) at pH 5, with 79.9% being transformed to U(IV) for reductive immobilization. Compared to conventional WO3, WO3_x exhibited narrower band gap energy, higher charge carrier separation, and faster transfer rates, attributed to its construction of oxygen vacancies.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Engineering, Environmental
Tao Chen, Fangpei Ma, Zhe Chen, Menglin Xie, Ting Li, Yu Zhou, Jun Wang
Summary: A facile microwave assisted strategy was reported for defect engineering of two-dimensional tungsten oxide, promoting the photochemical and O-2 activation behaviors. The catalyst achieved a high phenol yield with high selectivity under visible-light-driven conditions.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Applied
Jing He, Shuaishuai Zhou, Peiwen Wu, Yingcheng Wu, Lianwen He, Linhua Zhu, Wenshuai Zhu, Huaming Li
Summary: The interface properties of metal oxides significantly affect the catalyst activity in the removal of organic sulfur pollutants in diesel fuels. By refining the interface, the hydrophilicity of defective metal oxides can be improved. This study demonstrates the use of carbon nanotubes as solid modifiers to enhance catalytic performance.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Engineering, Environmental
Jiao Jiao, Xiyang Zhou, Shengnan Zhao, Weizhou Jiao, Ruixin Wang
Summary: By in situ annealing of the precursor composed of polyaniline-modified graphene oxide (PANI/GO) and ammonium molybdate, molybdenum dioxide (MoO2) nanoparticles with a particle size of 1.78 nm were uniformly anchored on nitrogen-doped reduced graphene oxide (NrGO) with strong electron-donating effect. The as-prepared MoO2/NrGO catalyst at 800 degrees C exhibited excellent oxidative desulfurization (ODS) activity and reusability. The outstanding ODS performance was attributed to the electron transfer from electron-rich NrGO to MoO2, resulting in improved dispersion and smaller size of MoO2, as well as the reduction of leaching of active sites due to induced electrostatic interaction.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Applied
Lei Chen, Zhong-Pan Hu, Jin-Tao Ren, Zheng Wang, Zhong-Yong Yuan
Summary: Mesoporous titanium phosphonates (MTP) were synthesized as support for molybdenum oxides in oxidative desulfurization (ODS) reactions. The electron-donating effect of organophosphonate ligands on Mo active sites led to high electron density, improving the efficiency and stability of ODS reactions.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Physical
Diogenes H. Piva, Roger H. Piva, Monize Picinini, Ariano D. Rodrigues, Ernesto A. Urquieta-Gonzalez
Summary: It was found in this study that during calcination between 400 and 600 degrees Celsius, the SiO2 shell can maintain the superparamagnetic characteristics of the gamma-Fe2O3 core, while high temperature can cause sintering of the SiO2 shell and reduce the surface area. Additionally, due to the enhanced dispersion of dioxo (O=)(2)WO2 species, the catalyst calcined at 500 degrees Celsius showed impressive performance in catalytic oxidation of dibenzothiophene.
CATALYSIS COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Kriti, Surbhi Chalotra, Puneet Kaur, Simranpreet Kaur, Asokan Kandasami, Parminder Kaur, D. P. Singh
Summary: This paper investigates the structural and optical properties of WO2.72 thin films implanted with 150 keV Ni ions at ion fluences ranging from 1015 to 1016 ions/cm2. The structural analysis reveals the formation of a crystalline monoclinic phase in the pristine films, but ion implantation leads to a degradation in crystalline quality and complete amorphization at higher ion fluences. Additionally, the bandgap decreases due to the band tailing effect caused by ion implantation. Optical investigation demonstrates the presence of near ultraviolet (NUV), band-to-band transition, and blue-green emission bands in the WO2.72 thin films. Ni doping through implantation causes a blue shift in the NUV emission peaks, attributed to an increase in free electron concentration in the conduction band. The overall color of the emitted light transitions from light blue to deep blue upon Ni implantation, as demonstrated by the Commission International de l'Eclairage (CIE) diagram.
Article
Chemistry, Physical
Sadia Afrin, Praveen Bollini
Summary: Quantitative analyses of four sets of aerobic/anaerobic ethanol conversion transients reveal the evolution of a high-surface-area cerium oxide surface that catalyzes nonoxidative ethanol dehydrogenation upon complete surface reduction. Aerobic-anaerobic switches lead to new steady state dehydrogenation rates, with termination of oxygen imbalances and induction periods in anaerobic experiments pointing to ethanol dehydrogenation turnovers originating from surface reduction. High vacancy densities obtained from analysis of oxygen imbalances indicate the catalytic origin of acetaldehyde during aerobic-anaerobic switches and anaerobic induction periods.
JOURNAL OF CATALYSIS
(2021)
Article
Energy & Fuels
Liping Mu, Jing Luo, Chao Wang, Jixing Liu, Yiru Zou, Xiaowei Li, Yan Huang, Peiwen Wu, Haiyan Ji, Wenshuai Zhu
Summary: The hybrid nanocomposite exhibits excellent desulfurization performance and impressive adsorption capacity for different types of sulfides, showing great potential for applications in various fields.
Article
Engineering, Chemical
Jing He, Guangyu Jia, Peiwen Wu, Yingcheng Wu, Hongping Li, Linjie Lu, Zhendong Yu, ShuaiShuai Zhou, Wenshuai Zhu, Huaming Li
Summary: A highly efficient desulfurizer has been developed by constructing a catalyst coupling W18O49 nanoneedles with Pt species, which effectively promotes the oxidation conversion of dibenzothiophene in the process of catalytic reactive-type desulfurization. The catalyst exhibits efficient, stable regeneration, and reusability.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Energy & Fuels
Shuaishuai Zhou, Jing He, Peiwen Wu, Lianwen He, Duanjian Tao, Linjie Lu, Zhendong Yu, Linhua Zhu, Yanhong Chao, Wenshuai Zhu
Summary: Encapsulating phosphomolybdic acid into a metal-organic framework improves the stability and activity of the oxidative desulfurization catalyst, showing excellent performance in treating the most stubborn sulfides in fuel oil. The catalyst can be recycled multiple times and the oxidizing product can be well separated, indicating promising potential for real diesel desulfurization.
Article
Chemistry, Inorganic & Nuclear
Peiwen Wu, Yang Sun, Linlin Chen, Qingdong Jia, Jing He, Wenhui Ma, Linjie Lu, Yanhong Chao, Lei Fan, Wenshuai Zhu
Summary: Carbon-based catalysts doped with boron were synthesized using a heteroatom bridging strategy, which demonstrated enhanced catalytic performance for oxidative desulfurization of fuel oil. The presence of boron atoms as bridges for electron transfer significantly improved the activation of oxygen by graphite, leading to ultradeep oxidative desulfurization. Furthermore, the catalyst showed good recyclability with no significant decrease in desulfurization performance after five cycles.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Ning Yang, Linjie Lu, Linhua Zhu, Peiwen Wu, Duanjian Tao, Xiaowei Li, Jiahong Gong, Linlin Chen, Yanhong Chao, Wenshuai Zhu
Summary: The novel PIL HPMo@ZIF-8-PIL shows efficient removal of dibenzothiophene sulfur in model oil under room temperature using hydrogen peroxide as the catalyst and oxidant. It promotes dispersion of catalytically active sites and retains good liquidity and excellent extraction ability of ionic liquids. The successful preservation of porosity increases the probability of contact between the oxidant and active sites, enhancing desulfurization performance.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Review
Engineering, Environmental
Jie Zhu, Peiwen Wu, Yanhong Chao, Jiangtao Yu, Wenshuai Zhu, Zhichang Liu, Chunming Xu
Summary: Three-dimensional (3D) printing is revolutionizing the design and manufacturing of 3D objects by transforming digital models into solid models. In the field of catalysis, 3D printing technology offers new possibilities and is widely applied in related catalytic reactions and processes.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Xiang Gao, Wei Jiang, Xin An, Kun Zhu, Linhua Zhu, Peiwen Wu, Wenshuai Zhu, Huaming Li
Summary: NHPI/PC catalysts, loaded with organic molecular catalyst NHPI on the surface of petroleum coke-based porous carbon, showed high efficiency and recyclability in aerobic oxidative desulfurization of model diesel oil under optimal conditions. The catalyst exhibited strong adsorption of oxidative products, resulting in a significant decrease in sulfur content. Free radical trapping experiments confirmed the presence of superoxide radicals as the main active species. Reusability tests demonstrated the catalyst's potential for industrial application after 9 cycles. Actual diesel oil sulfur content could be reduced from 852 mg kg(-1) to 91 mg kg(-1) with the catalyst, indicating promising industrial prospects.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Engineering, Chemical
Peiwen Wu, Penghui Liu, Linlin Chen, Wenhui Ma, Linhua Zhu, Mingyang Liu, Jing He, Linjie Lu, Yanhong Chao, Wenshuai Zhu
Summary: Noble-metal alloy nanoparticles have been successfully engineered with TiO2 support, which not only reduces the consumption of noble metals but also enhances catalytic performance. The AuCu/TiO2 catalyst exhibits high activity for sulfur removal in catalytic oxidative desulfurization of liquid fuels, even in the presence of interferents. The synergistic effect between Au and Cu, achieved by alloying, contributes to the boosted catalytic activity.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Energy & Fuels
Jiahong Gong, Huanhuan Xu, Jixing Liu, Hui Liu, Mingqing Hua, Ning Yang, Peiwen Wu, Huaming Li, Wenshuai Zhu
Summary: In this study, a highly efficient catalyst (C4@HPA) was used to reduce the sulfur content in high-sulfur petroleum coke. The results showed that only sulfates were removed, while sulfides and sulfoxides were retained in the coke. Additionally, it was found that sulfur in 4-MDBT was the most difficult to remove.
PETROLEUM SCIENCE AND TECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Qiaomin Lu, Dong Yan, Peiwen Wu, Li Chen, Abu ElGasim A. Yagoub, Qinghua Ji, Xiaojie Yu, Cunshan Zhou
Summary: In this study, a ultrasound-NATDES/DMSO system was used to transform corn straw into high-value platform compounds. The reaction parameters were optimized and the yields of the target compounds were significantly increased. This low-cost and environmentally friendly method provides a novel strategy for the utilization of agricultural waste.
Article
Chemistry, Physical
Jing Luo, Ming Yan, Haiyan Ji, Liping Mu, Yan Huang, Linhua Zhu, Yiru Zou, Chao Wang, Peiwen Wu, Yanhong Chao, Wenshuai Zhu
Summary: This study successfully synthesized Ce@C-BN materials through a direct pyrolysis strategy, which exhibited high specific surface area and excellent adsorption performance for desulfurization. The presence of Ce-MOFs not only provided active sites but also enhanced the interaction between Ce and BN.
APPLIED SURFACE SCIENCE
(2022)
Article
Energy & Fuels
Jing He, Yingcheng Wu, Peiwen Wu, Haiyan Huang, Wei Jiang, Wenshuai Zhu, Huaming Li
Summary: Developing efficient catalysts for aerobic oxidation desulfurization has always been a promising technology for purifying diesel fuels. Platinum (Pt) catalysts show potential performance for the selective oxidation of sulfides, although the scarcity and high cost of Pt limit its large-scale development. Alloying Pt is considered to be an effective strategy to reduce the platinum load and increase the high catalytic activity. The researchers successfully prepared highly dispersed PtFe nanoalloys coupled with defect-rich W18O49 nanomaterials, which showed excellent yields of up to 99% for 4,6-dimethyldibenzothiophene.
Article
Chemistry, Inorganic & Nuclear
Jixing Liu, Chang Deng, Xiangqi Liu, Shijia Shao, Peng Zheng, Linlin Chen, Peiwen Wu, Huaming Li, Hongbing Ji, Wenshuai Zhu
Summary: A single-site Mo-supported HEPO LaMn0.2Fe0.2Co0.2Ni0.2Cu0.2O3 catalyst with abundant mesoporous structures was prepared, exhibiting stable recycling and exceptional catalytic activity for the oxidation of DBT and its derivatives. This finding expands the application of single-atom Mo-supported HEPO materials into the field of ultra-deep oxidative desulfurization.
INORGANIC CHEMISTRY
(2023)
Article
Polymer Science
Peng Cui, Fangfang Zhang, Dongni Liu, Jie Zhu, Yafei Yuan, Yan Huang, Yanhong Chao, Peiwen Wu, Wenshuai Zhu, Zhichang Liu
Summary: The adsorption of polycyclic aromatic hydrocarbons (PAHs) from fluid catalytic cracking (FCC) diesel using carbazole-based porous organic polymers was studied. Ag(I) doping and direct carbonization were employed to enhance the adsorption capacity of PAHs. The carbonized P1-C-1000 exhibited high surface area and excellent PAH adsorption capacity due to its high porosity and conjugated interaction.
Article
Chemistry, Multidisciplinary
Xiao Jiang, Xuanyu Zhang, Stephen C. Purdy, Yang He, Zhennan Huang, Rui You, Zeyue Wei, Harry M. I. I. I. I. I. I. Meyer, Jiuzhong Yang, Yang Pan, Peiwen Wu, Wenshuai Zhu, Miaofang Chi, Katharine Page, Weixin Huang, Zili Wu
Summary: We report a catalyst with vanadium oxide dispersed onto hexagonal boron nitride (h-BN), which catalyzes the oxidative dehydrogenation of propane (ODHP) via the Eley-Rideal mechanism and the Mars-van Krevelen mechanism. The results show that loading 0.5wt% V significantly improves the yield of light alkene. Adding an appropriate concentration of nitric oxide further enhances the catalytic performance. This provides a potential strategy for developing efficient h-BN-based catalysts for ODHP by coupling gas-phase and surface reactions.
