Article
Chemistry, Multidisciplinary
Lele Cui, Bin Chen, Longshun Zhang, Chen He, Chen Shu, Hongyu Kang, Jian Qiu, Wenheng Jing, Kostya (Ken) Ostrikov, Zhenghua Zhang
Summary: This study demonstrates an anti-electrowetting carbon film electrode with self-sustained aeration, which is assembled using structurally discontinuously fractured conventional electrocatalyst films. It achieves highly selective and durable electrochemical two-electron oxygen reduction, providing a promising direction for developing cheap and scalable metal-free electrodes for industry-scale H2O2 electrosynthesis.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Engineering, Multidisciplinary
Behnam Seyyedi, Bafrin Shakhseh
Summary: This study introduces a Cobalt-rGO composite with excellent activity for converting oxygen to hydrogen peroxide and producing electrochemical energy. The composite exhibits good catalytic performance, economical synthesis method, high specific surface area, high selectivity, and electrochemical durability.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Yujie Feng, Wen Li, Jingkun An, Qian Zhao, Xin Wang, Jia Liu, Weihua He, Nan Li
Summary: This review focuses on the potential of carbon-based materials, particularly graphene and its derivatives, as noble-metal-free catalysts for the two-electron pathway of oxygen reduction reaction (ORR) to produce hydrogen peroxide (H2O2) in electrochemical systems. It discusses the functions of graphene family in accelerating electron transfer and increasing oxygen transfer for cathodes, aiming to reveal the enhancement mechanisms for H2O2 production. The challenges and prospects for the future use of graphene family as catalysts for H2O2 production are also proposed in this review.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Chemistry, Physical
Zhe Wang, Qin-Kun Li, Chenhao Zhang, Zhihua Cheng, Weiyin Chen, Emily A. McHugh, Robert A. Carter, Boris Yakobson, James M. Tour
Summary: A metal-free catalyst synthesized from commercial carbon black using plasma treatment was found to exhibit high efficiency in electrochemical generation of hydrogen peroxide. The catalyst showed a high onset potential and the highest mass activity among state-of-the-art catalysts, even after removal of oxygen-containing groups, due to its defective structure after plasma treatment.
Review
Chemistry, Physical
Chaohui He, Chenfeng Xia, Fu-Min Li, Jian Zhang, Wei Guo, Bao Yu Xia
Summary: This review succinctly summarizes the strategies employed to regulate the adsorption state of oxygen species on non-noble metal catalyst surfaces, encompassing insights into the adsorption mechanism and state regulation of oxygen intermediates, with a particular focus on the 2e- oxygen reduction reaction pathway for the production of H2O2.
ADVANCED ENERGY MATERIALS
(2023)
Article
Electrochemistry
June Sung Lim, Jinjong Kim, Kug-Seung Lee, Young Jin Sa, Sang Hoon Joo
Summary: This study investigates the impacts of catalyst loading and metal center on the 2e(-) ORR activity and selectivity of M-N/C catalysts. It is found that meso-Co-N/C and meso-Ni-N/C catalysts exhibit the best 2e(-) ORR performance under acidic and alkaline electrolytes, respectively, at low catalyst loadings. However, the H2O2 production activity of meso-Co-N/C catalyst dramatically declines at high catalyst loadings, while the activity of meso-Ni-N/C catalyst is nearly insensitive to the catalyst loading.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Applied
Basil Sabri Rawah, Wenzhen Li
Summary: The study presents a straightforward method for preparing cobalt-nitrogen-doped carbon using low-energy dry-state ball milling, followed by controlled pyrolysis. The material shows significant activity and selectivity in the oxygen reduction reaction, as well as stable durability.
CHINESE JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Physical
Hongcen Yang, Fei Ma, Niandi Lu, Shuhao Tian, Guo Liu, Ying Wang, Zhixia Wang, Di Wang, Kun Tao, Hong Zhang, Shanglong Peng
Summary: By embedding transition metal single atoms (TM SAs) in g-C3N4 nanosheets (CNNS), the selectivity and activity for the 2e(-) ORR can be enhanced, leading to the production of H2O2. Ni0.10 SA/CNNS exhibits the best selectivity and highest yield among the TM SA/CNNS catalysts.
NANOSCALE HORIZONS
(2023)
Article
Engineering, Environmental
Huixiang Wu, Taihe He, Meng Dan, Lei Du, Nan Li, Zhao-Qing Liu
Summary: A Ni-based MOF catalyst derived from modified ZIF-8 was developed for the synthesis of H2O2. The catalyst exhibited well-defined active sites and highly ordered mesoporous structure, and its catalytic performance was further enhanced by calcination treatment. The optimized catalyst showed excellent selectivity and high production rate in alkaline medium.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Baolong Niu, Hong Wang, Yanwei Zhang, Bin Nie, Huifang Wang, Xiaojie Lian, Wenfeng Li
Summary: A green synthesis system for controllable preparation of silver nanoparticles using plant extracts was established, and it was used to construct an electrochemical sensor for rapid and accurate detection of hydrogen peroxide. The sensor showed quick response, good linear relationship, wide linear range and low detection limit, demonstrating excellent comprehensive detection performance.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Zhuangzhuang Wu, Junming Luo, Ying Liang, Xinxin Yu, Yuzhen Zhao, Yongpeng Li, Wenxin Wang, Zhuyin Sui, Xinlong Tian, Qi Chen
Summary: In this study, a new tetrazole-functionalized covalent organic framework (COF-TZ) was synthesized and applied to electrocatalytic oxygen reduction reaction (ORR) and selective H2O2 production. The COF-TZ showed high H2O2 yield and COF-TZ could effectively coordinate cobalt for use in Li-S batteries. This study provides a logical design of functional COFs and promotes the development of electrocatalytic H2O2 production and Li-S batteries.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Multidisciplinary
Xiaogang Li, Shasha Tang, Shuo Dou, Hong Jin Fan, Tej S. Choksi, Xin Wang
Summary: The study shows that confining isolated metal sites on carbon supports can increase the selectivity of aminoanthraquinone as a catalyst in catalyzing the oxygen reduction reaction to produce H2O2. By reducing the thermodynamic barrier for OOH* desorption, the selectivity for H2O2 is improved.
ADVANCED MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Xiaoxuan Yang, Yachao Zeng, Wajdi Alnoush, Yang Hou, Drew Higgins, Gang Wu
Summary: Electrochemical oxygen reduction reaction (ORR) for generating hydrogen peroxide (H2O2) is a green alternative to traditional energy-intensive processes, and single metal site catalysts have emerged as promising ORR electrocatalysts. This article summarizes recent methodologies and achievements in developing these catalysts for selective reduction of O2 to H2O2. It also emphasizes the importance of catalyst stability and solutions to improve tolerance to H2O2, and highlights the challenges in translating catalyst properties to electrode performance for practical applications.
ADVANCED MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Xuanzhao Lu, Zhuo Liu, Jian-Rong Zhang, Yang Zhou, Linlin Wang, Jun-Jie Zhu
Summary: The challenge in designing bio-chemical hybrid catalysts is the inability to maintain the initial catalytic performance of bio-catalysts or chemical catalysts. We report a general method for synthesizing bio-chemical hybrid catalysts using a natural enzyme scaffold-confined metal nanocluster. The enzyme-confined metal nanocluster hybrid catalyst shows improved catalytic performance due to the synergistic effect.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Nan Wang, Shaobo Ma, Ruiyong Zhang, Lifei Wang, Yanan Wang, Lihui Yang, Jianhua Li, Fang Guan, Jizhou Duan, Baorong Hou
Summary: This study investigates the electrochemical synthesis of hydrogen peroxide (H2O2) using N-doped carbon materials. The N-C800 catalyst exhibits high 2e- oxygen reduction reaction (ORR) catalytic activity, H2O2 selectivity, and stability in a neutral electrolyte. In addition, the N-C800 catalyst demonstrates effective antibacterial performance for marine bacteria in simulated seawater.
Article
Chemistry, Multidisciplinary
Jimin Park, Ping Du, Jin-Kyung Jeon, Gun Hyuk Jang, Mintai Peter Hwang, Hyung-Seop Han, Kwideok Park, Kwan Hyi Lee, Jee-Wook Lee, Hojeong Jeon, Yu-Chan Kim, Jong Woong Park, Hyun-Kwang Seok, Myoung-Ryul Ok
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2015)
Article
Anatomy & Morphology
Jee-Wook Lee, Myoung-Ryul Ok, Sangmook Lee, Jin Ik Lim
MICROSCOPY RESEARCH AND TECHNIQUE
(2015)
Article
Multidisciplinary Sciences
Jimin Park, Hyung-Seop Han, Yu-Chan Kim, Jae-Pyeong Ahn, Myoung-Ryul Ok, Kyung Eun Lee, Jee-Wook Lee, Pil-Ryung Cha, Hyun-Kwang Seok, Hojeong Jeon
SCIENTIFIC REPORTS
(2015)
Article
Multidisciplinary Sciences
Jee-Wook Lee, Hyung-Seop Han, Kyeong-Jin Han, Jimin Park, Hojeong Jeon, Myoung-Ryul Ok, Hyun-Kwang Seok, Jae-Pyoung Ahn, Kyung Eun Lee, Dong-Ho Lee, Seok-Jo Yang, Sung-Youn Cho, Pil-Ryung Cha, Hoon Kwon, Tae-Hyun Nam, Jee Hye Lo Han, Hyoung-Jin Rho, Kang-Sik Lee, Yu-Chan Kim, Diego Mantovani
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2016)
Article
Biophysics
Byeong Cheol Jo, Hyun Jung Yoon, Myoung-Ryul Ok, Sangwook Wu
Article
Chemistry, Physical
Jaeho Park, Hyung-Seop Han, Jimin Park, Hyunseon Seo, James Edwards, Yu-Chan Kim, Myoung-Ryul Ok, Hyun-Kwang Seok, Hojeong Jeon
APPLIED SURFACE SCIENCE
(2018)
Article
Engineering, Biomedical
Indong Jun, Kyeongsoo Kim, Yong-Woo Chung, Hyeok Jun Shin, Hyung-Seop Han, James R. Edwards, Myoung-Ryul Ok, Yu-Chan Kim, Hyun-Kwang Seok, Heungsoo Shin, Hojeong Jeon
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART A
(2018)
Article
Chemistry, Multidisciplinary
Jimin Park, Hyunseon Seo, Hae Won Hwang, Jonghoon Choi, Kyeongsoo Kim, Goeen Jeong, Eun Shil Kim, Hyung-Seop Han, Yeon-Wook Jung, Youngmin Seo, Hojeong Jeon, Hyun-Kwang Seok, Yu-Chan Kim, Myoung-Ryul Ok
Article
Engineering, Biomedical
Seung-Hoon Um, Jaehong Lee, In-Seok Song, Myoung-Ryul Ok, Yu-Chan Kim, Hyung-Seop Han, Sang-Hoon Rhee, Hojeong Jeon
Summary: A method utilizing laser patterning to promote cell migration on hydroxyapatite coating surfaces was proposed, enhancing biocompatibility and bone formation. This method allows for the control of cell adhesion and movement speed, and can be applied to various surface treatments of implanted biomaterials.
BIOACTIVE MATERIALS
(2021)
Article
Engineering, Biomedical
Jaeho Park, Seung-Hoon Um, Youngmin Seo, Jaehong Lee, Yu-Chan Kim, Myoung-Ryul Ok, Suk-Won Hwang, Jeong-Yun Sun, Hyung-Seop Han, Hojeong Jeon
Summary: In the past decade, research has focused on using magnesium and its alloys as biocompatible and biodegradable materials for implants. However, their practical application has been limited due to rapid corrosion and associated complications. Surface coatings can reduce initial corrosion, and this study utilized nanosecond laser coating to improve the adhesion strength of hydroxyapatite (HAp) on magnesium. The coating increased corrosion resistance and cell adhesion, offering a simple and quick process without chemical ligands.
BIOACTIVE MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Hae Won Hwang, Seongchan Kim, Hyerim Hwang, Hyung-Seop Han, Hojeong Jeon, Yu-Chan Kim, Hyojin Lee, Jeong-Yun Sun, Myoung-Ryul Ok
Summary: In this study, we propose a method to determine the diffusivity of drug carriers in tissue-mimicking collagen using the lab-on-a-chip platform. The diffusivity values were determined for different sizes of fluorescent mesoporous silica nanoparticles and their spatiotemporal distribution was predicted. The results show that the concentration of nanoparticles decreases over time and distance from the gel-liquid interface.
ACS APPLIED NANO MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Goeen Jeong, Hyung-Seop Han, Hojeong Jeon, Yu-Chan Kim, Ho Won Jang, Myoung-Ryul Ok
Summary: Although metallic microneedles (MNs) and iontophoresis have been extensively studied, the use of biodegradable metals for transdermal drug delivery has not received much attention. In this study, Mg was employed as a promising candidate for an MN electrode due to its metallic properties and the hydrogen gas generated during Mg corrosion. The Mg MN electrode was fabricated using a nanosecond laser, and the hydrogen gas produced during iontophoresis was measured at various applied potentials. The results demonstrate an optimal potential range for iontophoresis based on the combined effect of enhanced drug diffusion and impediment from hydrogen generation.
METALS AND MATERIALS INTERNATIONAL
(2023)
Article
Engineering, Biomedical
Cheol Ho Heo, Seon Young Bak, Yonghan Kim, Myoung-Ryul Ok, So Yeon Kim
Summary: This study uses single-cell image analysis to analyze the integrin a(v)-mediated focal adhesion (FA) and cell morphological features of human bone marrow mesenchymal stem cells (BMSCs). It shows that distinct FA features can discriminate between osteogenic and adipogenic differentiation, and can be used as a non-invasive biomarker for real-time observation. The study also develops an organized microscale fibronectin (FN) patterned surface that can precisely manipulate the fate of BMSCs by controlling FA features.
ACTA BIOMATERIALIA
(2023)
Article
Materials Science, Biomaterials
Indong Jun, Hyung-Seop Han, Jae Won Lee, Kyungwoo Lee, Yu-Chan Kim, Myoung-Ryul Ok, Hyun-Kwang Seok, Young Jun Kim, In-Seok Song, Heungsoo Shin, James R. Edwards, Kuen Yong Lee, Hojeong Jeon
Summary: The study introduces a switchable physical stimuli technique for reversible cell patterning, which allows precise control of cell morphology and future direction without limitations of time and space. This tool offers easy manipulation of adherent cells to reshape their structure and influence their behavior based on the characteristics of the hydrogel.
JOURNAL OF MATERIALS CHEMISTRY B
(2021)
