Article
Chemistry, Multidisciplinary
Jinyi Wu, Shasha Ma, Jiawei Cui, Zujin Yang, Jianyong Zhang
Summary: As CO2 emissions increase and the global climate deteriorates, converting CO2 into valuable chemicals has become a topic of wide concern. In this study, two porous organic polymers functionalized with covalent triazine and triazole N-heterocycles were synthesized and used as catalysts for high-value conversion reactions. The results showed that the catalyst exhibited excellent catalytic activity, stability, and durability.
Article
Chemistry, Multidisciplinary
Arindam Modak, Anindya Ghosh, Akshay R. Mankar, Ashish Pandey, Manickam Selvaraj, Kamal Kishore Pant, Biswajit Chowdhury, Asim Bhaumik
Summary: Metal-free catalysis is challenging in green and sustainable chemistry, but solid-supported heterogeneous organocatalysts show potential in addressing metal leaching and sustainability issues. Porous organic materials are considered promising solid organocatalysts due to their robust structure and catalytic sites characteristics.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Chemistry, Inorganic & Nuclear
Umar Arif, Farman Ali, Ali Bahader, Sharafat Ali, Amir Zada, Fazal Raziq
Summary: This study developed a three-component photocatalyst hetero-junction of Ag-ZnO/g-C3N4 for efficient CO2 reduction. The optimized nano-composite exhibited exceptional visible-light photoactivity, increasing the conversion efficiency of CO2 to CO and methane production.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Engineering, Chemical
Xiutao Xu, Yue Huang, Kai Dai, Zhongliao Wang, Jinfeng Zhang
Summary: Photocatalytic CO2 reduction based on g-C3N4 with inexpensive, efficient, stable, and suitable energy band structure, serve as a promising candidate for alleviating the greenhouse effect. Herein, porous g-C3N4/CuSe (PCN/CS) Schottky heterojunctions were fabricated to overcome the low CO2 photoreduction performance of g-C3N4. The improved charge separation and reduced reaction energy barrier in PCN/CS contributed to significantly higher CO2 photoreduction efficiency compared to pure PCN and CS.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Physical
Feifei Tao, Yali Dong, Lingang Yang
Summary: NiO/g-C3N4 QDs composites were successfully synthesized by introducing graphited C3N4 quantum dots (g-C3N4 QDs) to the surface of petal-like NiO microtubes. These composites showed enhanced utilization of sunlight due to the up-conversion effect of g-C3N4 QDs and the novel petal-like tubular structure of NiO, leading to improved photocatalytic conversion of CO2 to CH4 and CO. Compared to NiO microtubes, the yields of CO and CH4 on NiO/g-C3N4 QDs were increased by 2.1 and 4.2 times, respectively. The expanded light response range and the synergistic catalysis between g-C3N4 QDs and NiO microtubes were identified as the primary factors contributing to the increased photocatalytic activity of CO2 reduction on NiO/g-C3N4 QDs.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Jiaqi Dong, Zhengqi Gong, Yingzhi Chen, Guodong Hao, Wenjie Zhou, Jiaxin Li, Mingqiang Yang, Rongsheng Deng, Lu-Ning Wang
Summary: It is reported a facile preparation of hierarchically porous g-C3N4 with uniform organic microstructure as a soft template. The in situ formed template in thiourea precursor solution effectively modifies the condensation of g-C3N4. The resulting g-C3N4 possesses hierarchical meso/macropores with higher surface area and pore volume, resulting in a 2.4-fold enhancement in photodegrading organic pollutant.
SCIENCE CHINA-MATERIALS
(2023)
Article
Chemistry, Physical
Fu-li Sun, Qiao-jun Fang, Yi-fan Yu, Wei Zhang, Jin-kong Pan, Wen-Xian Chen, Gui-lin Zhuang
Summary: By utilizing DFT calculations and AIMD simulations, the photocatalytic activity of B/N2(V)-pg-C3N4 for CO2 reduction was systematically investigated. It was found that B/N2(V)-pg-C3N4 had a smaller band gap and could selectively catalyze CO2 into HCOOH and HCHO. The unique electronic-deficient p states and curved geometry of B/N2(V)-pg-C3N4 contributed to its excellent photocatalytic performance.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Multidisciplinary
Wenxuan Sun, Xuyang Chen, Xiangfen Meng, Yan Gao
Summary: The study successfully used RuL2L'@C3N4/MOF material for the photocatalytic reduction of CO2 to CO, with a product selectivity of up to 86.6%, demonstrating that the synergies between components can significantly improve photocatalytic performance.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
D. P. Kumar, A. P. Rangappa, H. S. Shim, K. H. Do, Y. Hong, M. Gopannagari, K. A. J. Reddy, P. Bhavani, D. A. Reddy, J. K. Song, T. K. Kim
Summary: This study successfully enhanced the activity and selectivity of CO2 photocatalytic conversion by introducing porosity in graphitic carbon nitride and integrating it with other materials. The heterostructure material BT/PCN demonstrated superior photocatalytic performance due to effective separation and transportation of charge carriers.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Kyle J. Korman, Michael R. Dworzak, Glenn P. A. Yap, Eric D. Bloch
Summary: This paper describes the preparation of a new class of reactive porous solids through straightforward salt metathesis reactions. A porous solid is obtained by reacting the dimethylammonium salt of a magnesium-based porous coordination cage with the chloride salt of [(CrCl)-Cl-II(Me(4)cyclam)](+), with simultaneous removal of dimethylammonium chloride. The porous salt exhibits a Brunauer-Emmett-Teller (BET) surface area of 213 m(2) g(-1) and the chromium(II) cations in the structure are still accessible and reactive, as confirmed by UV-vis spectroscopy. The site-isolated reactive centers show enhanced stability and reactivity compared to dissolved ions.
Article
Chemistry, Multidisciplinary
Peng Jing, Boyuan Wu, Zongsu Han, Wei Shi, Peng Cheng
Summary: Utilizing Ag nanoparticles/MIL-100(Fe) as photothermal catalysts can efficiently convert aromatic alkynes to carboxylic acid products under visible light irradiation at room temperature. The catalysts demonstrate good recyclability and comparable catalytic performance under visible light irradiation to that upon heating. This work presents a promising strategy for efficient CO2 conversion to value-added chemicals using solar energy under mild conditions.
CHINESE CHEMICAL LETTERS
(2021)
Article
Multidisciplinary Sciences
Tang Yang, Xinnan Mao, Ying Zhang, Xiaoping Wu, Lu Wang, Mingyu Chu, Chih-Wen Pao, Shize Yang, Yong Xu, Xiaoqing Huang
Summary: CO2 hydrogenation has attracted significant scientific attention, but faces challenges such as low activity and poor selectivity. This study demonstrates that Cu single atom catalysts with tailored coordination on C3N4 exhibit high selectivity and activity for CO2 hydrogenation, with potential for promoting research on catalyst structure-performance relationships.
NATURE COMMUNICATIONS
(2021)
Article
Nanoscience & Nanotechnology
Jian Zhao, Zhuo-Hao Jiao, Sheng-Li Hou, Yue Ma, Bin Zhao
Summary: Carboxylative cyclization of propargylic alcohols with CO2 is significant in synthetic chemistry, but often requires harsh conditions. A new stable nitro-functionalized metal-organic framework (MOF) was successfully fabricated through solvothermal reaction, which exhibited excellent stability in acid and basic solutions and served as an excellent platform for catalytic applications. The Ag-1 catalyst, prepared by incorporating Ag(I) ions into the MOF, displayed excellent catalytic performance in the chemical fixation of CO2 with alkynols under room temperature and atmospheric pressure, with a high turnover frequency (TOF) value.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Environmental
Xibo Zhang, Huijie Liu, Yaqin Wang, Qian Chen, Zhiying Zhao, Ye Yang, Qin Kuang, Zhaoxiong Xie
Summary: Hot-electron-induced CO2 hydrogenation is efficiently catalyzed by surface alloyed Au@AuRu plasmonic nanoparticles in a unique antenna-reactor architecture, leading to high CH4 production rate and selectivity under light-heat dual activation. The modified metal atoms enhance the adsorption capacity, enabling the selective transformation of CO2 to CH4. The synergy between surface structure and metal-semiconductor heterojunction provides a longer time window for hot electrons to promote the chemical reaction.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Yanming Zhao, Yunlei Peng, Chuan Shan, Zhou Lu, Lukasz Wojtas, Zhenjie Zhang, Bao Zhang, Yaqing Feng, Shengqian Ma
Summary: Metallocorrole macrocycles are an emerging and attractive class of metal complexes from the porphyrinoid family, which have attracted great interest in recent years due to their unique structure and excellent performance in various fields. The targeted synthesis of porous organic polymers (POPs) constructed from custom-designed Mn and Fe-corrole complex building units shows superior catalytic activity for the solvent-free cycloaddition of carbon dioxide with epoxides, providing potential for CO2 transformations and the development of more multifunctional corrole-based materials for extended applications.
