Article
Nanoscience & Nanotechnology
Zanling Huang, Zhenjie Chen, Abdul Qayum, Xia Zhao, Hong Xia, Fushen Lu, Liangsheng Hu
Summary: A magnesium thermal calcination method was developed to reconstruct two-dimensional graphitic carbon nitride (g-C3N4, GCN), resulting in V-c-GCN with excellent photocatalytic performance under visible light irradiation, showing potential for the degradation of organic pollutants in the environment.
Article
Chemistry, Physical
Y. M. Hunge, A. A. Yadav, Seok-Won Kang, Hyunmin Kim
Summary: The multifunctional zinc oxide electrode has been widely used in various applications. This study focuses on the catalytic performance of zinc oxide, which is enhanced by silver nanoparticles. The Ag/ZnO composite has been fabricated using a facile and cost-effective hydrothermal method. This composite catalyst shows promising results in reducing water pollution and promoting catalytic reactions.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Akhil Hareendran, Elsa Dais, Denna Shinoy, S. Srikripa, Grace Maria Shibu, Manju Kurian
Summary: This study investigated nitrogen- and sulfur-doped zinc ferrite nanoparticles as catalysts for the complete degradation of 4-chlorophenol, showing their potential application in water treatment techniques for the oxidative removal of persistent organic compounds. The doped ferrite nanoparticles exhibited increased dielectric permittivity and superparamagnetic behavior, indicating possible applications in targeted drug delivery and magnetic resonance imaging. The catalysts were stable, efficient, and reusable for multiple cycles with negligible leaching of iron, demonstrating their effectiveness in environmental remediation.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2022)
Article
Chemistry, Multidisciplinary
Youliang Ma, Jingbang Chen, Yun Wang, Yue Zhao, Gang Zhang, Ting Sun
Summary: The novel hexagonal FeTiO3/TiO2 composites prepared in this study showed high photocatalytic activity, good crystal properties, and light absorption ability. The heterojunction effect between the two materials promoted the spatial separation of photogenerated electrons and holes, enhancing the oxidizing ability and light absorption of the photocatalyst.
RESEARCH ON CHEMICAL INTERMEDIATES
(2021)
Article
Engineering, Environmental
Ali Akbar Babaei, Masoumeh Golshan, Babak Kakavandi
Summary: A photocatalytic sulfate radical-based advanced oxidation process using persulfate (PS) catalyzing UV light and heterogeneous catalyst was studied for degrading 4-chlorophenol. By anchoring ferroferric oxide nanoparticles on activated carbon (FOC) as a supporter of TiO2 nanoparticles, a recoverable photocatalyst (FOCT) was fabricated. The system demonstrated excellent elimination efficiency in coupling with UV irradiation and PS, with high PCP decontamination rate and good reusability. The main reactive species in the system were identified as SO4 center dot - and HO center dot radicals.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2021)
Article
Engineering, Chemical
Van Nhuong Vu, Thi Ha Thanh Pham, Quoc Dung Nguyen, Thi Hau Vu, Thi Tu Anh Duong, Thi Hue Tran, Thi Kim Ngan Tran
Summary: Cu2+ modified ZnAlCO3 hydrotalcite materials were synthesized by co-precipitation method and characterized. The modified materials exhibited layered double hydroxide structure, with a slight increase in specific surface area and decrease in bandgap energy with increasing Cu2+ molar ratios. The material samples showed high adsorption capacity for phenol red and high degradation efficiency with the presence of light and H2O2. The CuH-3.5 sample demonstrated good catalytic stability after repeated use.
Article
Energy & Fuels
Zahra Al-Sharji, Jamal Al-Sabahi, Htet Htet Kyaw, Myo Tay Zar Myint, Mohammed Al-Abri
Summary: The photocatalytic degradation of 4-chlorophenol (4-CP) was successfully achieved under natural sunlight using zinc oxide nanorods (ZnO NRs) and gold nanoparticles (AuNPs) decorated ZnO NRs catalysts. The degradation efficiency reached 97% within 180 min for 10 ppm of 4-CP with 0.1 mM AuNPs concentration. The enhanced absorption in the visible region and visible-light-induced localized surface plasmon resonance property of AuNPs played a crucial role in promoting the electrons and holes separation and reducing recombination. The ZnO-Au catalyst exhibited great potential for environmental decontamination of organic pollutants.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2023)
Article
Chemistry, Inorganic & Nuclear
Ai Ling Pang, Muhammad Saqlain Iqbal, Nik Akmar Rejab, Ujjwal Pal, Muhammad Aniq Shazni Mohammad Haniff, Ahmad Ghadafi Ismail, Azrul Azlan Hamzah, Mohsen Ahmadipour
Summary: The study focuses on the influence of calcination temperature on the features and photocatalytic performance of sol-gel synthesized CaCu3Ti4O12 nanoparticles. Characterization of the nanoparticles was done using various methods to examine their structure, composition, morphology, and optical properties. Photodegradation of a cationic dye was used to evaluate the photocatalytic performance. Results showed that calcination improved the crystallinity and reduced the optical bandgap energy of the nanoparticles, leading to enhanced photocatalytic activity. The sample calcined at 900 degrees C demonstrated the highest photodegradation efficiency and excellent recyclability.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Environmental Sciences
Lalitha Gnanasekaran, Devaraj Manoj, Saravanan Rajendran, F. Gracia, A. A. Jalil, Wei-Hsin Chen, Matias Soto-Moscoso, M. A. Gracia-Pinilla
Summary: This study focuses on the treatment of industrial effluent, specifically the usage of NiO photocatalysts. Two types of NiO (green and black) were synthesized using different methods and characterized. The black NiO with Ni2O3 showed higher degradation efficiency for 4-chlorophenol under visible light compared to green NiO.
ENVIRONMENTAL RESEARCH
(2023)
Article
Chemistry, Physical
Olufemi Oluseun Akintunde, Linlong Yu, Jinguang Hu, Md Golam Kibria, Gopal Achari
Summary: This study investigates the use of graphitic carbon nitride (GCN) as a visible-light-activated photocatalyst for treating 4-chlorophenol (4-CP) in industrial wastewater and environmental media. Different precursors and GCN/silver nanocomposites were synthesized and characterized. The results show that GCN with a royal blue LED can effectively degrade 4-CP.
Article
Materials Science, Multidisciplinary
Pengyuan Qi, Yu Cong, Linhui Yu, Xiaowei Fu, Xinmeng Ge, Chunlai Hao, Lijie He
Summary: Gadolinium aluminate nanoparticles with stable cubic crystal structure and excellent properties in electricity, magnetism, luminescence, and catalysis were synthesized by co-precipitation method. The effects of calcination temperature, dispersant content, and mother salt solution concentration on the phase changes and particle morphology of precursors were investigated. The results showed that gadolinium aluminate nanoparticles with good dispersion and approximate spherical perovskite structure were obtained at a calcination temperature of 1100 degrees C for 2 h, with a mother salt solution concentration of 0.3 mol/L and a dispersant content of 2%.
Article
Environmental Sciences
Abrar Inayat, Lisandra Rocha-Meneses, Muhammad Ayoub, Sami Ullah, Ahmad Z. Abdullah, Salman R. Naqvi, Aamir H. Bhat
Summary: This study explores the impact of different Co3O4-based catalysts on the catalytic decomposition of nitrous oxide (N2O) and the conversion of nitric oxide (NO). The results indicate that Co3O4 catalysts prepared through precipitation methods exhibit the highest activity and N2O conversion, even at low reaction temperatures, while commercial nano and powder forms of Co3O4 (CS) perform the poorest. The catalysts lose effectiveness below 400 degrees C, with their activity being greatly influenced by the mixing temperature. The findings offer valuable insights for designing and optimizing catalytic systems for N2O and NO control.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Applied
Manuel Robles-Melgarejo, Jaime Espino-Valencia, Reyna Natividad-Rangel, Santiago Jose Guevara-Martinez, Jose Luis Rico-Cerda, Ricardo Rangel-Segura
Summary: Monoliths of TiO2-SiO2 were synthesized using the EISA method and tested in the photocatalytic degradation of 4-chlorophenol. The way of adding the titanium precursor and the calcination conditions were found to be key parameters in determining the physical, morphological, structural, and photocatalytic properties. Different approaches led to materials with different crystal structures, with the best performance achieved after calcination at high temperature under air flow.
JOURNAL OF POROUS MATERIALS
(2021)
Article
Engineering, Chemical
Rohit R. Shetty, Sandesh S. Raut, Prashant S. Kulkarni, Sanjay P. Kamble
Summary: This study developed a method to convert 4C2AP into a valuable product, 2AP, through catalytic hydrodechlorination reaction. By adjusting reaction conditions such as the amount of reducing agents, pH of wastewater, and the presence of salt, high selectivity conversion can be achieved. The results suggest that alkaline condition, presence of salt, and higher reaction temperature favor the hydrodechlorination process.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Environmental Sciences
Xinpeng Shu, Huaqi Bi, Jun Wang, Jiaxin Yang, Jue Wang, Guangqing Liu, Bensheng Su
Summary: This study explored the application of gamma-Al2O3 supported MnOx-CeOx catalysts as effective catalysts for ozonation in wastewater treatment. The results showed that MC2 possessed optimal physicochemical characteristics, improving the adsorption capacity and catalytic activity of the catalyst and promoting the removal efficiency of pollutants in wastewater.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Guoqiang Gan, Shiying Fan, Xinyong Li, Zhongshen Zhang, Zhengping Hao
Summary: Volatile organic compounds (VOCs) are significant pollutants in the environment due to their toxicity, volatility, and poor degradability. Controlling their emission is urgent, and efficient technologies for removal and recovery are of great importance. Adsorption and membrane separation processes have been extensively studied and favored for their industrial prospects.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2023)
Article
Engineering, Chemical
Shuang Qiu, Yonghou Xiao, Haoran Wu, Shengnan Lu, Qidong Zhao, Gaohong He
Summary: NH3 selective catalytic reduction (SCR) is a promising technique for reducing nitrogen oxides from diesel vehicle exhausts. In this study, bimetallic CeCu-SAPO-34 molecular sieves were synthesized and showed improved catalytic activity at low temperatures. The introduction of cerium species enhanced the catalyst's stability and promoted the NH3-SCR reaction through the formation of weak Bronsted acid centers and the synergy between CuO grains and isolated Cu2+. This work provides a facile synthesis method for high-efficiency SCR denitration catalysts.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Nanoscience & Nanotechnology
Guoqiang Gan, Fengquan Xu, Xinyong Li, Shiying Fan, Chunpeng Bai, Qidong Zhao, Moses O. Tade, Shaomin Liu, Wenjun Zhang
Summary: The influence of crystal phase on the electrocatalytic performance and active sites of CuFe2O4 spinel for the electrochemical dechlorination of 1,2-dichloroethane is studied. A higher activity and ethylene selectivity are observed for the cubic phase compared to the tetragonal phase, indicating the significant enhancement of electrocatalytic performance by the cubic crystal structure. The octahedral Fe atom on the surface of cubic CuFe2O4(311) is identified as the active site responsible for ethylene production with an energy barrier of 0.40 eV. This work highlights the importance of crystal phase engineering for optimizing electrocatalytic performance and provides an efficient strategy for the development of advanced electrocatalysts.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Energy & Fuels
Yushan Li, Xu Liu, Hao Zhou, Qidong Zhao, Yonghou Xiao
Summary: In this study, a novel integrated process for the treatment of polymer-flooding sewage is proposed, which includes air flotation-(anaerobic-anoxic-aerobic)-ozone catalytic oxidation-dual media filtration-multimedia filtration. The process effectively addresses the low pollutant removal efficiency caused by the high viscosity of polymer and achieves efficient removal of suspended solids, oil, and other biochemical indexes. Moreover, more than 70% of the polymer is retained in the effluent. This research provides an efficient approach for the reuse of polymer-flooding sewage.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2023)
Article
Energy & Fuels
You Zhao, Wenkai Zhao, Yonghou Xiao, Qidong Zhao, Chengbin Li, Xiaoying Dong, Shengnan Lu
Summary: A novel super microporous silica material (SMS) with a bimodal micro-mesoporous pore size distribution has been successfully synthesized. The SMS demonstrates improved adsorption desulfurization performance by reducing diffusion resistance and enhancing shape selectivity compared to traditional microporous and mesoporous silicon oxide materials. The SMS exhibits high desulfurization capacity, easy regeneration, and satisfactory performance for practical applications.
Article
Engineering, Chemical
Zhiyuan Liu, Shiying Fan, Xinyong Li, Zhaodong Niu, Jing Wang, Chunpeng Bai, Jun Duan, Moses O. Tade, Shaomin Liu
Summary: We demonstrate a composite photocatalyst for nitric oxide conversion with a Cu-Fe alloy, graphitic carbon nitride (g-C3N4), and ZnIn2S4. The superior photocatalytic performance of 6.45-fold that of g-C3N4 was confirmed. The delay effect on charge recombination was observed through time-resolved photoluminescence, and heterojunction establishment was attributed to the hole-trapping ability of ZnIn2S4. The combined effects of the Cu-Fe alloy were confirmed by NO-specific adsorption and conversion experiments, and the active species involved were examined via electron spin resonance. Density functional theory calculations revealed the molecular mechanisms of photocatalytic conversion of NO to NO3-. Therefore, g-C3N4|ZnIn2S4|CuFe has potential for sustainable and efficient pollutant conversion.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Engineering, Chemical
Shengnan Lu, Yonghou Xiao, Qidong Zhao, Wenkai Zhao, Gaohong He
Summary: Deep desulfurization of fuel is an important research topic in response to increasing environmental protection requirements. This study proposes a strategy to construct defective CPO-27-Ni with a micro-mesoporous structure using N, N-dimethyloctadecylamine (DMA18) as a template, aiming to improve diffusion efficiency. The introduction of mesopores effectively enhances the adsorption desulfurization performance of CPO-27-Ni, providing valuable insights for preparing high-efficiency desulfurization adsorbents.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Yanan Zhu, Yuanfu Deng, Guohua Chen
Summary: In this study, heteroatom-doped carbon nanosheets were successfully synthesized using crosslinked triazine frameworks and g-C3N4 nanosheets as a template. The nanosheets exhibited high crinkling and interconnectivity, along with a large surface area (1060 m(2) g(-1)) and pore volume (2.14 cm(3) g(-1)), with highly dispersed N, O and S. When coated on commercial Celgard separators, the modified batteries showed low self-discharge and improved rate performance, even at 4 C. Excellent cycling performances were achieved at different rates, with an initial discharge capacity of 1240 mA h g(-1) and a capacity decay of only 0.059% per cycle for over 1000 cycles at 0.5 C.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Physical
Zhaodong Niu, Shiying Fan, Xinyong Li, Jun Duan, Aicheng Chen
Summary: In this study, a new catalyst was developed for efficient wastewater treatment and high-value ammonia generation. The catalyst exhibited high Faradaic efficiency and yield at specific potentials, and the reaction was promoted by the interface effect. The experimental results and theoretical calculations provided insights into the catalytic mechanism and product formation.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Zhiyuan Liu, Shiying Fan, Xinyong Li, Zhaodong Niu, Jing Wang, Chunpeng Bai, Jun Duan, Moses O. Tade, Shaomin Liu
Summary: In this paper, single atom Cu/Ta3N5/CdIn2S4 S-scheme hierarchical polyhedrons (SACu/TN/CIS SHPs) were successfully synthesized and their photocatalytic activity improvement was investigated. The synergistic effect of SACu and S-scheme was confirmed to exhibit excellent charge separation and reduction of energy barriers during ammonium production reaction. The NH3 production rate of SACu/TN/CIS SHPs under light conditions was remarkably 43.6 times higher than that of Ta3N5. This study not only proposes an efficient catalyst under visible light, but also provides an advantageous solution for photocatalytic nitrate reduction.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Review
Chemistry, Multidisciplinary
Cong Lin, Jianyuan Li, Zu-Wei Yin, Weiyuan Huang, Qinghe Zhao, Qingsong Weng, Qiang Liu, Junliang Sun, Guohua Chen, Feng Pan
Summary: This review focuses on the long-term research of the structural understanding of LiCoO2 cathode, uncovering various structural issues and stabilization strategies at different scales. It emphasizes the importance of in-depth knowledge of LiCoO2 structure for future stabilization efforts.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Penglei Wang, Shiying Fan, Xinyong Li, Jun Duan, Dongke Zhang
Summary: The impact of the piezoelectric effect on the photocatalytic production of hydrogen peroxide (H2O2) over graphitic carbon nitride (CN) was investigated by modulating its molecular structure. The results showed that the photocatalytic activity of CN, CN-P, CN-OF was enhanced by approximately 1.40, 1.46, and 1.51 times due to the piezoelectric effect, respectively, while CN-CA exhibited a 6-fold decrease in activity. Various techniques were employed to explore the active sites, piezoelectric polarization, and charge separation, revealing that the piezoelectric effect's influence on photocatalytic H2O2 production over CN is determined by multiple factors.
Article
Nanoscience & Nanotechnology
Yu Qin, Shiying Fan, Jinsuo Gao, Moses O. Tade, Shaomin Liu, Xinyong Li
Summary: Cu-doped CoMn2O4 catalysts showed excellent catalytic performance in NO reduction by CO, with Cu0.3Co0.7Mn2O4 achieving 100% NO conversion and 80% N2 selectivity at 250 degrees C. Structural analysis revealed that the introduced Cu replaces some Co in tetrahedral coordination, resulting in a strong synergistic effect between different metals.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Environmental Sciences
Jinyun Luo, Jincheng Mu, Xinyong Li, Baojun Liu
Summary: With the development of metallurgy, chemical manufacturing, and mining, lead pollution in water, especially from battery industries, has become a serious environmental problem. In this study, a highly efficient removal of Pb2+ from wastewater was achieved using MoO2@N-doped hollow carbon sphere (MoO2@ NHCS) anodes in a capacitive deionization (CDI) process. The MoO2@NHCS electrodes exhibited a high adsorption capacity of 202.14 mg/g for Pb2+ in a 50 ppm solution (pH = 6 and U = 1.2 V). Additionally, the electrodes showed selectivity towards Pb2+ even in the presence of Na+ and other heavy metal ions. The selective removal was attributed to the transformation of octahedral MoO2 into tetrahedral [MoO4]2-, which could effectively trap Pb2+ to form PbMoO4.
