Article
Chemistry, Physical
Giang-Son Tran, Truong-Giang Vo, Chia-Ying Chiang
Summary: In this study, earth-abundant manganese oxide (MnO2) was used as an efficient catalyst for the electrocatalytic glycerol oxidation, achieving high yield and selectivity under mild pH conditions. Combining operando Raman and electrochemical studies, a tentative reaction pathway was proposed to explain the high selectivity of formic acid and dihydroxyacetone (DHA) at different applied potentials.
JOURNAL OF CATALYSIS
(2021)
Article
Engineering, Environmental
Pan Luo, Jianyue Wang, Wenjuan Rui, Ruilin Xu, Zhiyuan Kuai, Dan Yang, Xiaoyue Wan, Chunmei Zhou, Yanhui Yang, Yihu Dai
Summary: This study reveals the positive role of ball-milling-induced phase transition from t-ZrO2 to m-ZrO2 in activating the secondary hydroxyl of glycerol over PtBi/ZrO2 catalysts. The mZrO2-BM support enhances the dispersion of PtBi sites and surface basicity, improving the activity, DHA selectivity, and recycling stability of the catalyst. Catalytic evaluation and in-situ FT-IR spectra analysis suggest that the catalyst prefers dissociative activation of the secondary hydroxyl of glycerol.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Dongkyu Kim, Won-Gwang Lim, Youngmin Kim, Lee Seul Oh, Seongseop Kim, Jong Hyeok Park, Changshin Jo, Hyung Ju Kim, Joonhee Kang, Seonggyu Lee, Eunho Lim
Summary: The reaction pathway of electrocatalytic glycerol oxidation can be controlled by incorporating amorphous antimony oxide on the surface of a Pt nanoparticle electrocatalyst, resulting in highly selective glycerol oxidation to dihydroxyacetone. This strategy not only improves the selectivity, stability, and electro-catalytic activity of the Pt electrocatalyst, but also promotes the glycerol conversion in the reaction.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Review
Chemistry, Physical
Pedro M. Walgode, Rui P. V. Faria, Alirio E. Rodrigues
Summary: The increase in production of biodiesel worldwide has resulted in the accumulation of crude glycerol, which can be valorized to produce high added value compound DHA. Current industrial production of DHA is not efficient, indicating the need for a more effective production process through selective catalytic oxidation.
CATALYSIS REVIEWS-SCIENCE AND ENGINEERING
(2021)
Article
Nanoscience & Nanotechnology
Zhen Yuan, Hai Liu, Yimin Wang, Yihu Ke
Summary: The use of Syringa oblata Lindl. leaf extract to synthesize Au/CuO catalysts for the oxidation of glycerol to DHA is a green and environmentally friendly approach, which achieves high catalytic performance and selectivity to DHA.
Article
Chemistry, Physical
Xiaoyuan Liu, Yu Zou, Jiang Jiang
Summary: Using Au/TiO2 as photocatalyst, glycerol oxidation was achieved in a non-pressurized reactor with borate additives. The activity and selectivity of the reaction depended on Au loading, borate concentration, and solution pH. Borate additives not only coordinated and protected oxidized intermediates, but also enhanced the production of superoxide radicals, promoting the formation of C3 products. Under AM 1.5 G irradiation for 4 hours in pH 12 solution, a glycerol conversion rate of 94% was achieved, with C3 product selectivity of 58% on liquid-phase basis and 37% on carbon basis. This finding has implications for future photocatalytic biomass valorization catalyst design, emphasizing the need for balanced oxidative power to guide reaction pathways.
APPLIED CATALYSIS A-GENERAL
(2023)
Article
Chemistry, Physical
Laura C. Paredes-Quevedo, J. G. Carriazo, Mauricio Velasquez
Summary: A set of catalysts based on mixed Cu-Co oxide were synthesized for the partial oxidation of glycerol. The catalysts were supported on a porous dealuminized metakaolinite material. The results showed high glycerol conversion and selectivity to dihydroxyacetone under specific reaction conditions. The catalytic activity was affected by the size of the metal oxide particles, while the selectivity remained unaffected.
CATALYSIS COMMUNICATIONS
(2023)
Article
Chemistry, Applied
Zhiyan He, Xiaomei Ning, Guangxing Yang, Hongjuan Wang, Yonghai Cao, Feng Peng, Hao Yu
Summary: This article provides a comprehensive review of recent developments on glycerol selective oxidation over supported noble metal catalysts, with critical attention paid to the influence of metal-support and metal-metal interactions on the catalyst structure and performance, aiming for a better understanding of the reaction mechanism and rational catalyst design.
Article
Energy & Fuels
Muhammad Sheraz Ahmad, Kim Hoong Ng, Ching-Lung Chen, Faryal Kabir, Thongthai Witoon, Ta Yeong Wu, Chin Kui Cheng
Summary: This study reports the incorporation of N and P into the Pd/CNTs framework for selective oxidation of glycerol, resulting in a catalyst with superior electrocatalytic performance. The NP doped/PdCNTs exhibit better resistivity and require lower electrocatalysis voltage to achieve higher current density compared to other catalysts. The yield of 1, 3-dihydroxyacetone is significantly higher with NP doped/PdCNTs.
Article
Chemistry, Multidisciplinary
Michael Guschakowski, Uwe Schroeder
Summary: This study investigated and compared different approaches for the direct and indirect electrooxidation of glycerol, a by-product of oleochemistry and biodiesel production, for the synthesis of value-added products and of intermediates for biofuel/electrofuel production. The different approaches were discussed regarding selectivity, conversion, and coulombic efficiency of the electrochemical glycerol oxidation.
Article
Chemistry, Multidisciplinary
Kevin Fernandez-Caso, Ailen Pena-Rodriquez, Jose Solla-Gullon, Vicente Montiel, Guillermo Diaz-Sainz, Manuel Alvarez-Guerra, Angel Irabien
Summary: CO2 electroreduction is a promising way to reduce CO2 emissions and produce valuable products. This study explores the coupling of CO2 electroreduction to formate with glycerol electrooxidation to high-added value products. The results show significant progress in both cathodic formate production and anodic dihydroxyacetone production.
JOURNAL OF CO2 UTILIZATION
(2023)
Article
Engineering, Chemical
Fanyu Meng, Hao Yan, Xiaoqing Zhou, Jie Zeng, Xin Zhou, Yibin Liu, Xiang Feng, De Chen, Chaohe Yang
Summary: This study innovatively realized the efficient oxidation of glycerol to glycolic acid over a metal-free catalyst under mild conditions through carbon material defect engineering. The stepwise functionalization of active carbon was found to fine-tune the composition and electronic structure of oxygen-containing functional groups, leading to improved catalytic activity. The oxygen-containing functional groups, particularly ester and carboxyl, were found to promote the C-H bond activation and C-C bond cleavage, ensuring high selectivity for glycolic acid.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Chemistry, Physical
Pingbo Zhang, Chengguang Yue, Mingming Fan, Agus Haryonob, Yan Leng, Pingping Jiang
Summary: This study investigated the selective oxidation of glycerol using O-doped g-C3N4 catalyst in different solvents and found that solvents play a crucial role in affecting catalytic efficiency and product distribution. The interaction between glycerol and catalysts in different solvents was identified as the main factor influencing the conversion efficiency, with water inhibiting adsorption and activation of glycerol on the catalyst surface, while acetonitrile promoting ester production. The proposed reaction routes over O-doped g-C3N4 in different solvents provide insights into the related reaction mechanism.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Multidisciplinary Sciences
Zuyun He, Jinwoo Hwang, Zhiheng Gong, Mengzhen Zhou, Nian Zhang, Xiongwu Kang, Jeong Woo Han, Yan Chen
Summary: The redox center of transition metal oxides and hydroxides is typically considered to be the metal site, but recent research has shown that proton and oxygen also play an active role in catalytic reactions and determine the reactivity. In this study, the impact of proton and oxygen (de)intercalation processes on elementary steps in the glycerol electrooxidation reaction is systematically investigated. It is found that doping Co into Ni-hydroxide promotes the deintercalation of proton and oxygen anion from the catalyst surface. This leads to the formation of oxygen vacancies in NiCo hydroxide, which increase d-band filling on Co sites and facilitate charge transfer during the 2nd C-C bond cleavage. As a result, NiCo hydroxide exhibits enhanced glycerol electrooxidation activity.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Jana Klein, Siegfried R. R. Waldvogel
Summary: A sustainable electrochemical pathway for the degradation and thermal treatment of technical lignosulfonate is proposed. This method allows for the production of significant quantities of low molecular weight compounds, including vanillin and acetovanillone. The electrochemical degradation is carried out using a simple two-electrode setup in aqueous media, which can be easily scaled up. The biopolymer is oxidized at the anode, while hydrogen is evolved at the cathode. Subsequent thermal treatment further degrades the robust chemical structure of lignosulfonates. Under optimized electrolytic conditions, vanillin can be obtained in a yield of 9.7 wt% relative to the dry mass of lignosulfonate used. By-products such as acetovanillone or vanillic acid are also observed but in lower yields. Overall, this study establishes a new and reliable one-pot, two-step degradation process for various technically relevant lignosulfonates, offering the advantage of using electrons as an oxidizing agent and resulting in minimal reagent waste.
Article
Chemistry, Physical
Xianguang Ding, Haitao Zhao, Chunyan Li, Qiangbin Wang, Jiang Jiang
Article
Chemistry, Multidisciplinary
Zhengzhe Xie, Yu Zou, Liujun Deng, Jiang Jiang
ADVANCED MATERIALS INTERFACES
(2020)
Article
Materials Science, Multidisciplinary
Junheng Chen, Yanyan Tu, Yu Zou, Xiaohong Li, Jiang Jiang
Summary: Electrochemical conversion of CO2 into value-added chemicals, such as formic acid, using copper sulfides nanocrystals synthesized through a simple ethylene glycol solvothermal route showed high Faradic efficiency due to their high S content and specific morphology.
Article
Chemistry, Physical
Xin Huang, Yuyang Guo, Yu Zou, Jiang Jiang
Summary: Substoichiometric cobalt (oxy)hydroxide has been demonstrated as an effective electrocatalyst for selective glycerol oxidation to hydroxypyruvic acid, offering a new perspective for glycerol valorization.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Materials Science, Multidisciplinary
Yunlong Zhou, Yu Zou, Jiang Jiang
Summary: In this study, a chiral cysteine-directed seeded-growth approach was used to synthesize chorogi-like Au nanoparticles. The obtained nanoparticles exhibit distinct chiral plasmonic response and excellent catalytic activity, offering new opportunities for broadening optical and catalytic applications of Au nanoparticles.
Article
Nanoscience & Nanotechnology
Pengpeng Jia, Yu Zou, Jiang Jiang
Summary: A CuS hybrid hydrogel was constructed for infected wound healing applications using a gelatin-assisted synthesis and direct incorporation strategy. The hydrogel exhibited good mechanical strength, self-healing ability, and resistance to bacterial invasion, and it accelerated skin regeneration. This work provides a promising strategy for synthesizing functional inorganic nanomaterials embedded inside modified natural hydrogel networks for wound healing applications.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Xiaoyuan Liu, Yu Zou, Jiang Jiang
Summary: Using Au/TiO2 as photocatalyst, glycerol oxidation was achieved in a non-pressurized reactor with borate additives. The activity and selectivity of the reaction depended on Au loading, borate concentration, and solution pH. Borate additives not only coordinated and protected oxidized intermediates, but also enhanced the production of superoxide radicals, promoting the formation of C3 products. Under AM 1.5 G irradiation for 4 hours in pH 12 solution, a glycerol conversion rate of 94% was achieved, with C3 product selectivity of 58% on liquid-phase basis and 37% on carbon basis. This finding has implications for future photocatalytic biomass valorization catalyst design, emphasizing the need for balanced oxidative power to guide reaction pathways.
APPLIED CATALYSIS A-GENERAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Liujun Deng, Yu Zou, Jiang Jiang
Summary: Plasmonic MoO2-embedded MoNi4 nanosheets were successfully synthesized by thermal annealing, demonstrating strong plasmon absorption and good catalytic activity for 4-nitrophenol reduction. The hybrid catalysts show enhanced catalytic efficiency under visible light irradiation, due to the excitation of MoO2 plasmon inducing an increase in the catalytic activity of MoNi4. Additionally, the catalysts exhibit relative stability even under illumination reaction conditions.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Multidisciplinary
Yuyang Guo, Yu Zou, Jiang Jiang
Summary: Cu(i) species are (re)generated via photo-redox reactions, and the polymerization degree and molecular weight can be regulated by controlling the rate of plasmonic hot carrier extraction.
CHEMICAL COMMUNICATIONS
(2021)
Article
Materials Science, Biomaterials
Haiyan Wu, Pengpeng Jia, Yu Zou, Jiang Jiang
Summary: The study utilizes modified NIR-II absorbing CuS NPs with mitochondria targeting TPP and CD44 targeting hyaluronic acid to achieve active photothermal ablation of tumor cells. This approach demonstrated enhanced tumor uptake and improved tumor growth suppression in in vivo experiments.
BIOMATERIALS SCIENCE
(2021)
Article
Chemistry, Inorganic & Nuclear
He Li, Yu Zou, Jiang Jiang
DALTON TRANSACTIONS
(2020)
Article
Chemistry, Physical
Zhengzhe Xie, Wugang Wang, Ding Ding, Yu Zou, Yi Cui, Lai Xu, Jiang Jiang
JOURNAL OF MATERIALS CHEMISTRY A
(2020)
Article
Chemistry, Multidisciplinary
Xia Sun, Yu Zou, Jiang Jiang
CHEMICAL COMMUNICATIONS
(2019)
Review
Medicine, Research & Experimental
Xianguang Ding, Dan Li, Jiang Jiang