Article
Chemistry, Applied
Silvia Gaspa, Luca Ledda, David d'Atri, Andrea Porcheddu, Luisa Pisano, Massimo Carraro, Lidia De Luca
Summary: An esterification of the C-H bond of aldehydes is achieved using oxidovanadium(IV) sulfate as a catalyst. The reaction is facilitated by visible-light irradiation, performed at room temperature, and requires no additives, with H2O2 as the benign oxidant. This study showcases the potential of vanadium salts in halogenation processes, C-H activation, and contributes to the field of earth-abundant metal-based catalysis.
ADVANCED SYNTHESIS & CATALYSIS
(2023)
Article
Chemistry, Physical
Hongli Zhou, Ying Shao, Zizhen Zhou, Yun Yang, Jiao He, Liang Jiang, Daomei Chen, Yongjuan Chen, Zhiying Yan, Jiaqiang Wang
Summary: In this study, vanadium-doped TiO2 with a needle-like surface ultrastructure was successfully prepared using a solvent-thermal-assisted biotemplating method. The use of glycerol and vanadium doping improved the performance of the photocatalyst, resulting in a significant increase in cyclohexane conversion.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Ahmed Badreldin, Muhammad Danyal Imam, Yiming Wubulikasimu, Khaled Elsaid, Aya E. Abusrafa, Perla B. Balbuena, Ahmed Abdel-Wahab
Summary: This study reports the modification of V2O5 materials using photocatalysis technology to enhance visible light activity, resulting in high degradation efficiency for dye-type organic pollutants, and explores the mechanism behind the improvements.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Environmental
Kai Wang, Lisha Jiang, Tianjiao Xin, Yuan Li, Xiaoyong Wu, Gaoke Zhang
Summary: By designing coordinating single-atomic-site V on ultrathin carbon nitride with V-N charge-transfer bridge, high efficient photocatalytic H2 production and formaldehyde oxidation under visible light were achieved. This design significantly improves photocatalytic efficiency and outperforms other carbon nitride-based photocatalysts.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Wenzhao Zhang, Long Zhang, Sanzhong Luo
Summary: Catalytic asymmetric de Mayo reaction was achieved for the first time under visible light using asymmetric binary acid catalysis (ABC) involving zirconium chloride and chiral phosphoric acid (CPA). The chiral zirconium catalysis enables effective reactions over a broad range of 1,3-diketones and alkenes with up to >99% yield and 98% ee. The key chiral zirconium enolate was isolated and characterized to account for the observed catalysis and stereoselectivity.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Dhanapal Vasu, Arjunan Karthi Keyan, Subramanian Sakthinathan, Chung-Lun Yu, Yu-Feng You, Te-Wei Chiu, Liangdong Fan, Po-Chou Chen
Summary: In this study, a novel nanosheet photocatalyst (V/Cu/gCN) for the removal of monocrotophos (MCP) was developed by anchoring vanadium and copper elements on graphitic carbon nitride. The dopant materials enhanced electron-hole separation and MCP removal rate. The investigation of effective conditions confirmed the optimal doping concentration and catalytic dosage. The scavenging process revealed the reactive radicals involved in MCP degradation. The direct Z-scheme dual-heterojunction mechanism and MCP fragmentation pathway were derived. This research provides insights into the development of efficient semiconductor photocatalysts for environmental treatments.
Article
Engineering, Environmental
Alejandro Bembibre, Majdi Benamara, Mokhtar Hjiri, Elvira Gomez, Hatem R. Alamri, Ramzi Dhahri, Albert Serra
Summary: The study explores the efficient mineralization of tetracycline antibiotics using Ca-doped ZnO nanopowders under LED visible light and ultrasound irradiation. The catalyst exhibited high efficiency, reusability, and minimal sonophotocorrosion, especially in natural waters' pH range.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Yi Wang, Xuanjia Lang, Xinhe Liu, Yong Kang
Summary: In this study, BiOBr was prepared through hydrothermal method, and AgVO3/BiOBr composite photocatalyst was obtained by loading AgVO3 on its surface using in situ deposition method. The composite catalyst showed enhanced photocatalytic activity for the degradation of organic pollutants under visible light.
Article
Chemistry, Multidisciplinary
Min Zhu, Hao Xu, Xiao Zhang, Chao Zheng, Shu-Li You
Summary: Herein, we report visible-light-induced intramolecular double dearomative cycloaddition of arenes, which provides a wide substrate scope for the synthesis of structurally diverse polycyclic indoline derivatives in high yields and with exclusive diastereoselectivity.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Organic
Chunbo Bo, Fei Chen, Qingqing Bu, Zhi-Hong Du, Min Li, Bin Dai, Ning Liu
Summary: A light-driven organocatalytic approach using 9,10-dibromoanthracene as a photocatalyst and N-fluorobenzenesulfonimide as an oxidant is reported for alkoxylation of the benzyl C-H bond. This reaction proceeds at room temperature and is capable of converting a variety of alkyl biphenyl and coupling partners, including a variety of alcohol and carboxylic acid, as well as peroxide, to the desired products under 400 nm light irradiation.
JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Environmental Sciences
Gema Marcelo, Pedro Rodriguez-Pascual, Belen Batanero, Francisco Mendicuti, Carlos Pecharroman
Summary: This study combines mechanochemistry and photocatalysis for the degradation of pyrene, and finds that sepiolite performs better than TiO2 in the degradation process. The mechanism of photoexcitation of mechanically altered pyrene leading to electron transfer to sepiolite matrix is proposed, shedding light on the photodegradation of PAHs in soils.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2023)
Article
Chemistry, Organic
Jin Bai, Sijia Yan, Zhuxia Zhang, Zhen Guo, Cong-Ying Zhou
Summary: A metal-free heterogeneous photocatalysis using inexpensive graphitic carbon nitride (g-C3N4) has been developed for the synthesis of benzothiazoles via intramolecular C-H functionalization/C-S bond formation of thiobenzanilides under visible-light irradiation. This reaction provides high yields of 2-substituted benzothiazoles without the need for a strong base or organic oxidizing reagents, and the catalyst is stable and reusable after five reaction cycles.
Article
Multidisciplinary Sciences
Kai-Kai Chen, Chao-Chao Qin, Meng-Jie Ding, Song Guo, Tong-Bu Lu, Zhi-Ming Zhang
Summary: In this study, a universal Cu(I) center was coupled with multiple strong visible-light-absorbing antennas to overcome the energy level limitations of current noble-metal complexes, resulting in the development of a broadband and strong visible-light-absorbing nonprecious complex. The systematic investigations demonstrated that this complex enables efficient intermolecular electron/energy transfer and exhibits outstanding performance for both energy- and electron-transfer reactions. These findings open up new possibilities for the development of efficient earth-abundant photosensitizers for boosting photosynthesis.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Review
Chemistry, Multidisciplinary
Jiahao Wang, Xinxin Lv, Zhiyong Jiang
Summary: Asymmetric catalysis is a powerful tool for synthesizing enantioenriched molecules. Deracemization, the direct conversion of a racemic compound to one enantiomer, is an attractive approach with high-atom efficiency. Visible-light-driven photocatalysis has recently emerged as a promising platform for deracemization, overcoming kinetic and thermodynamic challenges in chemical transformations without the need for additional stoichiometric reagents. This review systematically summarizes and discusses the advances in this area, categorizing examples based on energy transfer and single-electron transfer in photocatalysis.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Guanqun Han, Yujie Sun
Summary: This article summarizes the recent developments in organic photocatalysis using semiconductor-based photocatalysts, including metal oxides, metal chalcogenides, and metal-free carbon nitrides. It introduces the application of different semiconductor categories in organic oxidation-reduction reactions and redox-coupled reactions using excited electrons and holes. Finally, the remaining challenges and future opportunities in this field are discussed.
MATERIALS TODAY PHYSICS
(2021)
Article
Energy & Fuels
Mi Yan, Antoni, Jingyi Wang, Dwi Hantoko, Ekkachai Kanchanatip
Summary: The study found that a higher primary air temperature led to a larger evaporation layer at the bottom of the bed, resulting in faster complete combustion. Additionally, higher primary air temperatures increased devolatilization rate and peak flame temperature.
Article
Environmental Sciences
Mi Yan, Xuanyou Zhou, Sicheng Zhang, Wenjuan Liao, Gaojun Zhu, Jingyi Wang, Ekkachai Kanchanatip, Muhammad Sajid Khan
Summary: The pyrolysis of RDF in PG atmosphere resulted in higher tar yield, lower char and gas production, and chars more similar to coal compared to pyrolysis in N-2 atmosphere. Additionally, the gas produced under PG atmosphere had higher LHV, but lower GTC efficiency due to lower gas yield.
JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT
(2021)
Article
Energy & Fuels
Ukrit Samaksaman, Worarat Pattaraprakorn, Arthit Neramittagapong, Ekkachai Kanchanatip
Summary: Hydrothermal carbonization can effectively convert macadamia nut shell into solid fuel with higher heating value. The energy recovery can be improved by adjusting the hydrothermal conditions. Higher temperature during hydrothermal treatment can enhance the coalification and thermal stability of the hydrochar.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Energy & Fuels
Mi Yan, Qun Huan, Yan Zhang, Wei Fang, Feng Chen, Agamuthu Pariatamby, Ekkachai Kanchanatip, Haryo Wibowo
Summary: In this study, ChCl-MEA DES was used as an absorbent for CO2 capture. The effects of absorption pressure, temperature, and water content in DES on CO2 absorption performance were evaluated. The results showed that ChCl-MEA DES exhibited high CO2 absorption capacity and selectivity, indicating its great potential for CO2 capture from biogas.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Energy & Fuels
Mi Yan, Yan Zhang, Nurak Grisdanurak, Haryo Wibowo, Caimeng Yu, Ekkachai Kanchanatip
Summary: One advantage of supercritical water gasification combined with CO2 capture and storage technology is the conversion of bio-waste into hydrogen-rich syngas. This study synthesized copper benzene-1,3,5-tricarboxylate metal organic frameworks and used them as adsorbents for CO2 capture from SCWG model syngas. The adsorption capacity of the adsorbents was affected by synthesis time, adsorption temperature, and adsorption pressure, with adsorption pressure having the most significant effect. Cu-BTC with a synthesis time of 48 hours showed the highest CO2 capacity. Therefore, Cu-BTC has the potential to remove CO2 from SCWG syngas.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Energy & Fuels
Mi Yan, Wei Fang, Hongyu Feng, Yan Zhang, Haryo Wibowo, Ekkachai Kanchanatip, Dicka Ar Rahim
Summary: The trend of using mixed metal oxide as a selective adsorbent for H2S gas is increasing. This paper evaluated the performance of Zn-Fe/Al2O3 adsorbent in adsorbing H2S during biogas purification process and found that operation parameters had significant influence on the adsorber performance. The Zn-Fe/Al2O3 showed promising potential as an adsorbent for H2S adsorption in biogas purification process.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Energy & Fuels
Mi Yan, Jintao Cui, Tian Li, Hongyu Feng, Dwi Hantoko, Ekkachai Kanchanatip
Summary: This study conducted a comprehensive investigation on the transformation and distribution of nitrogen and phosphorus during supercritical water gasification of sewage sludge. The results showed that organic nitrogen was converted to ammonium nitrogen, while phosphates were enriched in the solid phase. Therefore, this study provides a theoretical basis for the utilization of the liquid product and the recovery of phosphorus from the solid product.
Article
Engineering, Chemical
Qun Huan, Yan Zhang, Haryo Wibowo, Zhang Xu, Ekkachai Kanchanatip, Li Zhong, Mi Yan
Summary: This study focused on the regeneration of ChCl-MEA DES after CO2 capture, and evaluated the effects of regeneration conditions on absorption capacity and selectivity. By adjusting the addition of catalyst and water content, efficient regeneration cycles were achieved, providing valuable references for the application of CO2 purification absorbents.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Energy & Fuels
Piyanut Phuthongkhao, Kitanchalee Phasin, Purita Boonma, Rattabal Khunphonoi, Ekkachai Kanchanatip, Totsaporn Suwannaruang, Harikaranahalli Puttaiah Shivaraju, Kitirote Wantala
Summary: The successful conversion of paper sludge waste to carbonaceous hydrochar was demonstrated through hydrothermal carbonization under controlled conditions. The hydrochar produced at higher temperatures and for a longer time showed excellent fuel characteristics with steadily increased carbon content and high heating value. This research has potential sustainable and broader applications in the fields of energy, agriculture, and waste treatment.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Multidisciplinary Sciences
Pongsert Sriprom, Sutasinee Neramittagapong, Chitsan Lin, Arthit Neramittagapong, Pornsawan Assawasaengrat
Summary: In this study, Cu-BG-MCM-41 was used as a catalyst for lignin degradation through a Fenton-like oxidation reaction. The optimal operating conditions were determined by experimental design and response surface methodology, resulting in a 95% degradation of lignin. Additionally, the reaction yielded high-value intermediate products, such as vanillin.
Article
Engineering, Environmental
Ekkachai Kanchanatip, Pradabduang Kiattisaksiri, Arthit Neramittagapong
Summary: This study investigated the treatment of liquid effluent from hydrothermal carbonization of macadamia nut shell using Cu, Ni, and Fe doped titanium dioxide photocatalysts. The results showed that Fe doped TiO2 exhibited the highest photocatalytic activity, followed by Cu and Ni. Fe doped anatase TiO2 achieved the highest removal rates of TOC and COD, with concentrations reduced to 405.62 mg/L and 91.26 mg/L, respectively. These findings suggest that photocatalytic degradation could be a potential treatment for HTC liquid effluent before it is released into the environment.
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING
(2023)
Article
Engineering, Environmental
Tianchi Shen, Yayong Yang, Ekkachai Kanchanatip, Dwi Hantoko, Feng Chen, Cheng Chen, Mi Yan
Summary: Hydrothermal carbonization (HTC) is an efficient method to convert wet food waste into hydrochar. However, the by-product of this process, HTC wastewater, contains highly polluting chemicals. In this study, hydrochar was produced through HTC process and further processed into activated carbon (AC) using KOH activation. The obtained AC was used to catalyze the degradation of HTC wastewater. The optimal condition for the catalytic process was determined, achieving a COD removal efficiency of 78.94%.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Energy & Fuels
Ekkachai Kanchanatip, Wasipim Chansiriwat, Sawangthip Palalerd, Rattabal Khunphonoi, Tinnakorn Kumsaen, Kitirote Wantala
Summary: This study investigates the production of light biofuels using modified Thai dolomite as a catalyst. The results show that the Mg content and reaction temperature have an impact on the yield and quality of the biofuels produced.
CARBON RESOURCES CONVERSION
(2022)
Article
Engineering, Environmental
Mi Yan, Xinyi Tian, Antoni, Caimeng Yu, Zhihao Zhou, Dwi Hantoko, Ekkachai Kanchanatip, Muhammad Sajid Khan
Summary: The study showed that increasing air preheating temperature led to higher rates of moisture evaporation and volatile release, potentially raising the local maximum temperature in the furnace. By using different primary air temperature setups, it was possible to maintain high rates of moisture evaporation and total mass loss, while reducing the rate of volatile release. The multi-temperature primary air setup effectively controlled the local maximum temperature in the furnace while encouraging moisture evaporation and minimizing volatile release.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
