Article
Chemistry, Applied
Sang-Chul Jung, Kyong-Hwan Chung, Jaewook Choi, Young-Kwon Park, Sun-Jae Kim, Byung-Joo Kim, Heon Lee
Summary: This paper proposes a method for mass-producing hydrogen from ammonia water by applying a liquid phase plasma discharge technique and a photocatalyst. By preparing N/Fe/TiO2 photocatalysts and applying them as visible light-sensitive photocatalysts, efficient decomposition of ammonia water and high hydrogen evolution rate were achieved.
Article
Chemistry, Applied
Mun Kyoung Kim, Woo Hyeong Sim, Miri Choi, Hyungseob Lim, Youngkook Kwon, Hyung Mo Jeong
Summary: The study introduces an effective electrochemical lithiation method for the synthesis of lithium-intercalated TiO2 nanoparticles, improving their photocatalytic hydrogen production performance. The electrochemical lithiation of TiO2 leads to a partial reduction of Ti ions in the crystal lattices, introducing additional energy states and enhancing the optical properties. As a result, Li-intercalated TiO2 NPs exhibit significantly higher hydrogen generation activity under both UV and visible light exposure compared to commercial TiO2 NPs (P25).
Article
Environmental Sciences
Vempuluru Navakoteswara Rao, Pasupuleti Kedhareswara Sairam, Moon-Deock Kim, Mashallah Rezakazemi, Tejraj M. Aminabhavi, Chi Won Ahn, Jun-Mo Yang
Summary: In order to reduce environmental pollution and carbon-based gas emissions, photocatalytic hydrogen production and sensing applications at ambient temperature are crucial. This research focuses on developing new 0D/1D materials based on TiO2 nanoparticles grown onto CdS hetersturctured nanorods through a two-stage synthesis process. The optimized nanohybrid showed excellent stability and a high photocatalytic hydrogen production rate. Furthermore, the nanomaterial exhibited superior gas sensing performance for NO2 detection at room temperature, with increased sensitivity when activated by UV light. Overall, the 1D/0D CdS@TiO2 material proved to be efficient for both hydrogen production and gas detection.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Chemistry, Applied
Mostafa El-Shafie, Shinji Kambara, Yukio Hayakawa
Summary: This study investigated the performance of several noble zeolite (SA-600A)-based catalysts supported with RuCl3 center dot nH(2)O and LiOH center dot H2O materials for H-2 production from NH3 decomposition. The results showed that the catalyst performance was enhanced with an increase in the Ru supported material mixing ratio.
Article
Chemistry, Applied
Valentina Cechetto, Luca Di Felice, Jose A. Medrano, Camel Makhloufi, Jon Zuniga, Fausto Gallucci
Summary: The membrane reactor proposed in this work allows for efficient recovery of hydrogen stored in ammonia, achieving high-purity hydrogen separation and ammonia decomposition simultaneously. Experimental results demonstrate that the introduction of a membrane in a conventional reactor can enhance performance and achieve high conversion rates for ammonia at sufficiently high temperatures.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Chemistry, Physical
Valentina Cechetto, Luca Di Felice, Rocio Gutierrez Martinez, Alba Arratibel Plazaola, Fausto Gallucci
Summary: This work presents two alternatives for increasing the purity of hydrogen produced in a membrane reactor. The experimental results demonstrate that ultra-pure hydrogen can be produced by either increasing the thickness of the membrane selective layer or using a small purification unit in the permeate of the membranes. Additionally, the use of an adsorption bed downstream the membrane reactor is a cheaper solution that can achieve ultra-pure hydrogen with higher reactor pressures, lower temperatures, and thinner membranes.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Camel Makhloufi, Nouaamane Kezibri
Summary: Hydrogen plays a crucial role in integrating renewable electricity into the energy mix efficiently, but building a sustainable Hydrogen Economy faces challenges in the value chain, particularly in large-scale production and storage. Storing renewable hydrogen in the form of green ammonia is a promising solution to unlock existing infrastructure for bulk storage and export.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Engineering, Environmental
Kyong-Hwan Chung, Young-Kwon Park, Sun-Jae Kim, Sang-Chai Kim, Sang-Chul Jung
Summary: This study attempted to develop a hybrid reaction system that combines photochemical decomposition, liquid-phase plasma, photocatalyst, and electrolysis for efficient decomposition and hydrogen production from high-concentration ethanolamine-resistant wastewater. The consecutive reaction process successfully decomposed ethanolamine wastewater and achieved complete removal of chemical oxygen demand (COD) and total nitrogen. The hydrogen production rates were significantly increased in the hybrid reaction system compared to a single electrolysis reaction, indicating the potential for enhanced hydrogen production through the combination of photocatalysis and electrolysis.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Green & Sustainable Science & Technology
Shangcong Sun, Qiuqiao Jiang, Dongyue Zhao, Tiantian Cao, Hao Sha, Chuankun Zhang, Haitao Song, Zhijian Da
Summary: This review focuses on the principles, advances, and strategies for enhancing efficiency of catalysts in NH3 decomposition. It provides recommendations for material design and highlights the advantages of bimetallic materials. The review offers valuable insights for the future development of ammonia decomposition catalysts.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Chemistry, Physical
Yu Qiu, Enkang Fu, Feng Gong, Rui Xiao
Summary: This study develops an efficient and cost-effective catalyst for hydrogen production via ammonia decomposition by using non-precious nickel as the catalyst. The Ni/MgAl2O4-LDH catalyst exhibits high ammonia conversion and hydrogen production rates, with stable performance over time. The highly dispersed nickel on the MgAl2O4-LDH surface plays a crucial role in enhancing the catalytic performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Inorganic & Nuclear
Yingqiu Gu, Di Xu, Yun Huang, Zhouyang Long, Guojian Chen
Summary: Transition metal catalysts have potential in ammonia decomposition to produce COx-free hydrogen, but effectively synthesizing catalysts with small size active species and good stability remains a challenge. Mesoporous Co/Al2O3 catalysts with different cobalt contents were successfully synthesized using a modified sol-gel method, with the catalyst 15CoAl showing optimal performance. The catalyst maintained high NH3 conversion and hydrogen formation rates even after a long-duration stability test.
DALTON TRANSACTIONS
(2021)
Article
Energy & Fuels
Sijan Devkota, Beom-Ju Shin, Ji-Hun Mun, Tae-Ha Kang, Hyung Chul Yoon, Shaukat Ali Mazari, Jong-Ho Moon
Summary: This study reports the hydrogen production from ammonia decomposition in a multi catalytic packed bed reactor with an intermediate heating system using Aspen Plus V.12. The results show that ammonia decomposition is a highly endothermic reaction that requires significant heat energy. The parameters for large-scale ammonia decomposition are optimized, and the optimum values for thermal efficiency, fuel-saving, and product yield in ammonia combustion are found to be 59%, 22%, and 77% respectively. The issue of NOX emissions during pure ammonia combustion is also analyzed, and the blending of hydrogen with fuel ammonia is proposed to reduce the emissions.
Review
Chemistry, Physical
Ziga Ponikvar, Blaz Likozar, Saso Gyergek
Summary: The conventional method for synthesizing ammonia is costly and energy-intensive. Recent developments focus on alternative methods and electrification of ammonia production and decomposition.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Juan Corredor, Maria J. Rivero, Inmaculada Ortiz
Summary: The experimental results of photocatalytic hydrogen production show that the composite material with 2% rGO exhibits similar initial performance to TiO2 but decreases gradually over time. Further analysis reveals the negative influence of hydrogen accumulation in the reaction system on the photocatalytic process.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Applied
Yang Chen, Guobing Mao, Yawen Tang, Heng Wu, Gang Wang, Li Zhang, Qi Liu
Summary: The novel Cr2O3/C@TiO2 composite synthesized in this study showed enhanced visible light absorption, reduced recombination rate of electrons and holes, and abundant active sites for photoreduction reaction, leading to superior H-2 production compared to pure TiO2.
CHINESE JOURNAL OF CATALYSIS
(2021)
Article
Acoustics
Saki Fukunaga, Sayaka Higashi, Takafumi Horie, Hiroaki Sugiyama, Akihisa Kanda, Tong-Yang Hsu, Kuo-Lun Tung, Keita Taniya, Satoru Nishiyama, Naoto Ohmura
ULTRASONICS SONOCHEMISTRY
(2019)
Article
Thermodynamics
Hiroshi Suzuki, Ruri Hidema, Sohei Usa, Takafumi Horie, Yoshiyuki Komoda, Naoto Ohmura, Keita Taniya, Yuichi Ichihashi, Satoru Nishiyama, Hitoshi Asano
INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID
(2019)
Article
Chemistry, Physical
Toshiyuki Kaizu, Yousuke Kawajiri, Masahito Enomoto, Takashi Uchino, Minoru Mizuhata, Yuichi Ichihashi, Keita Taniya, Satoru Nishiyama, Masakazu Sugiyama, Masami Ueno, Takashi Kita
JOURNAL OF PHYSICAL CHEMISTRY C
(2019)
Article
Chemistry, Physical
Hiroshi Sugimoto, Balint Somogyi, Toshiyuki Nakamura, Hao Zhou, Yuichi Ichihashi, Satoru Nishiyama, Adam Gali, Minoru Fujii
JOURNAL OF PHYSICAL CHEMISTRY C
(2019)
Article
Chemistry, Physical
Atsushi Okemoto, Makoto R. Harada, Takayuki Ishizaka, Norihito Hiyoshi, Koichi Sato
APPLIED CATALYSIS A-GENERAL
(2020)
Review
Energy & Fuels
Keita Taniya, Yuichi Ichihashi, Satoru Nishiyama
JOURNAL OF THE JAPAN PETROLEUM INSTITUTE
(2020)
Article
Engineering, Chemical
Keita Taniya, Hiromu Takado, Hiroaki Ito, Takafumi Horie, Yuichi Ichihashi, Shik Chi Tsang, Satoru Nishiyama
JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
(2020)
Article
Engineering, Chemical
Sohei Usa, Ruri Hidema, Yoshiyuki Komoda, Takafumi Horie, Keita Taniya, Yuichi Ichihashi, Naoto Ohmura, Satoru Nishiyama, Hitoshi Asano, Hiroshi Suzuki
JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
(2020)
Article
Chemistry, Multidisciplinary
Tianxiang Chen, Yong Wang, Qi Xue, Ching Kit Tommy Wun, Pui Kin So, Ka Fu Yung, Tai-Sing Wu, Yun-Liang Soo, Keita Taniya, Sarah Day, Chiu C. Tang, Zehao Li, Bolong Huang, Shik Chi Edman Tsang, Kwok-yin Wong, Tsz Woon Benedict Lo
Summary: This study successfully assembled supported multinuclear catalysts with controllable metal nuclearity and constituent composition in zeolites, utilizing the principles of coordination chemistry and solid-state chemistry. The observed synergistic effects in the catalytic performance of these catalysts have the potential to bridge the gap between homogeneous and heterogeneous catalysis.
CELL REPORTS PHYSICAL SCIENCE
(2022)
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)