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Article ; Online: Advances in platinum-based and platinum-free oxygen reduction reaction catalysts for cathodes in direct methanol fuel cells

Chu Qin / Shijun Tian / Wenjie Wang / Zhong-Jie Jiang / Zhongqing Jiang

Frontiers in Chemistry, Vol

2022 Volume 10

Abstract: Direct methanol fuel cells (DMFCs) have been the focus of future research because of their simple structure, abundant fuel sources, high energy conversion efficiency and low cost. Among the components in DMFC, the activity and stability of the cathode ... ...

Abstract	Direct methanol fuel cells (DMFCs) have been the focus of future research because of their simple structure, abundant fuel sources, high energy conversion efficiency and low cost. Among the components in DMFC, the activity and stability of the cathode catalyst is the key to the performance and lifetime of the DMFCs. Oxygen reduction reaction (ORR) is an important electrode reaction on DMFC cathode. It is known that Pt is widely used in the fabrication of ORR catalysts, but the limited earth storage of Pt and its high price limit the use of Pt-based commercial catalysts in DMFCs. To overcome these problems, advances have been made on new low Pt-based catalysts and Pt-free catalysts in recent years. In this article, the development of novel ORR catalysts and the carbon supports is reviewed and discussed.
Keywords	direct methanol fuel cells ; ORR catalysts ; cathodes ; platinum-based ; carbon supports ; Chemistry ; QD1-999
Subject code	660
Language	English
Publishing date	2022-11-01T00:00:00Z
Publisher	Frontiers Media S.A.
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Semantic satiation of emotional words impedes facial expression processing in two stages

Zhao Li / Kewei Li / Ying Liu / Mingliang Gong / Junchen Shang / Wen Liu / Yangtao Liu / Zhongqing Jiang

Heliyon, Vol 9, Iss 7, Pp e18341- (2023)

2023

Abstract: To explore the mechanism of emotional words semantic satiation effect on facial expression processing, participants were asked to judge the facial expression (happiness or sadness) after an emotional word (哭(cry) or 笑(smile)) or a neutral word (阿(Ah), ... ...

Abstract	To explore the mechanism of emotional words semantic satiation effect on facial expression processing, participants were asked to judge the facial expression (happiness or sadness) after an emotional word (哭(cry) or 笑(smile)) or a neutral word (阿(Ah), baseline condition) was presented for 20 s. The results revealed that participants were slower in judging valence-congruent facial expressions and reported a more enlarged (Experiment 1) and prolonged (Experiment 2) N170 component than the baseline condition. No significant difference in behavior and N170 appeared between the valence-incongruent and the baseline condition. However, the amplitude of LPC (Late Positive Complex) under both valence-congruent/incongruent conditions was smaller than the baseline condition. It indicates that, in the early stage, the impeding effect of satiated emotional words is specifically constrained to facial expressions with the same emotional valence; in the late stage, such an impeding effect might spread to facial expressions with the opposite valence of the satiated emotional word.
Keywords	Semantic satiation ; Facial expression ; N170 ; LPC ; Science (General) ; Q1-390 ; Social sciences (General) ; H1-99
Subject code	150
Language	English
Publishing date	2023-07-01T00:00:00Z
Publisher	Elsevier
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: N‐Doped Carbon Nanotubes Derived from Graphene Oxide with Embedment of FeCo Nanoparticles as Bifunctional Air Electrode for Rechargeable Liquid and Flexible All‐Solid‐State Zinc–Air Batteries

Xiaoqiong Hao / Zhongqing Jiang / Baoan Zhang / Xiaoning Tian / Changsheng Song / Likui Wang / Thandavarayan Maiyalagan / Xiaogang Hao / Zhong‐Jie Jiang

Advanced Science, Vol 8, Iss 10, Pp n/a-n/a (2021)

2021

Abstract: Abstract This work reports a novel approach for the synthesis of FeCo alloy nanoparticles (NPs) embedded in the N,P‐codoped carbon coated nitrogen‐doped carbon nanotubes (NPC/FeCo@NCNTs). Specifically, the synthesis of NCNT is achieved by the calcination ...

Abstract	Abstract This work reports a novel approach for the synthesis of FeCo alloy nanoparticles (NPs) embedded in the N,P‐codoped carbon coated nitrogen‐doped carbon nanotubes (NPC/FeCo@NCNTs). Specifically, the synthesis of NCNT is achieved by the calcination of graphene oxide‐coated polystyrene spheres with Fe3+, Co2+ and melamine adsorbed, during which graphene oxide is transformed into carbon nanotubes and simultaneously nitrogen is doped into the graphitic structure. The NPC/FeCo@NCNT is demonstrated to be an efficient and durable bifunctional catalyst for oxygen evolution (OER) and oxygen reduction reaction (ORR). It only needs an overpotential of 339.5 mV to deliver 10 mA cm−2 for OER and an onset potential of 0.92 V to drive ORR. Its bifunctional catalytic activities outperform those of the composite catalyst Pt/C + RuO2 and most bifunctional catalysts reported. The experimental results and density functional theory calculations have demonstrated that the interplay between FeCo NPs and NCNT and the presence of N,P‐codoped carbon structure play important roles in increasing the catalytic activities of the NPC/FeCo@NCNT. More impressively, the NPC/FeCo@NCNT can be used as the air‐electrode catalyst, improving the performance of rechargeable liquid and flexible all‐solid‐state zinc–air batteries.
Keywords	all‐solid‐state Zn–air battery ; bifunctional electrocatalyst ; FeCo alloy ; N,P codoped carbon ; nitrogen‐doped carbon nanotube ; rechargeable Zn–air battery ; Science ; Q
Subject code	541
Language	English
Publishing date	2021-05-01T00:00:00Z
Publisher	Wiley
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: Shell thickness controlled core–shell Fe3O4@CoO nanocrystals as efficient bifunctional catalysts for the oxygen reduction and evolution reactions

Zhou, Lingshan / Binglu Deng / Zhong-Jie Jiang / Zhongqing Jiang

Chemical communications. 2019 Jan. 3, v. 55, no. 4

2019

Abstract: Core–shell Fe3O4@CoO NCs have been demonstrated to be efficient bifunctional catalysts for the oxygen reduction (ORR) and evolution (OER) reactions. Their activities are strongly shell thickness dependent. Specifically, nanocrystals with ∼2 monolayers of ...

Abstract	Core–shell Fe3O4@CoO NCs have been demonstrated to be efficient bifunctional catalysts for the oxygen reduction (ORR) and evolution (OER) reactions. Their activities are strongly shell thickness dependent. Specifically, nanocrystals with ∼2 monolayers of CoO can exhibit a potential difference of 0.794 V at OER and ORR current densities of 10 and −3 mA cm−2, respectively. This value is competitive to those of most active bifunctional catalysts reported. In addition, they are also used as the oxygen cathode for Zn–air batteries and can deliver a peak power density of 109 mW cm−2, much higher than that of the Pt–RuO2/C (88.1 mW cm−2).
Keywords	batteries ; catalysts ; cathodes ; chemical reactions ; cobalt oxide ; nanocrystals ; oxygen
Language	English
Dates of publication	2019-0103
Size	p. 525-528.
Publishing place	The Royal Society of Chemistry
Document type	Article
ZDB-ID	1472881-3
ISSN	1364-548X ; 1359-7345 ; 0009-241X
ISSN (online)	1364-548X
ISSN	1359-7345 ; 0009-241X
DOI	10.1039/c8cc09140d
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Paper flower-derived porous carbons with high-capacitance by chemical and physical activation for sustainable applications

Pitchaimani Veerakumar / Thandavarayan Maiyalagan / Balasubramaniam Gnana Sundara Raj / Kuppuswamy Guruprasad / Zhongqing Jiang / King-Chuen Lin

Arabian Journal of Chemistry, Vol 13, Iss 1, Pp 2995-

2020 Volume 3007

Abstract: Porous carbon nanosheets were prepared by the carbonization of paper flower via chemical and physical activation. The structural properties of the as-prepared carbons were characterized using the techniques, such as X-ray diffraction (XRD), Fourier- ... ...

Abstract	Porous carbon nanosheets were prepared by the carbonization of paper flower via chemical and physical activation. The structural properties of the as-prepared carbons were characterized using the techniques, such as X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), Raman spectroscopy, N2 sorption isotherms and X-ray photoelectron spectroscopy (XPS), while the related morphological analyses were conducted using scanning/transmission electron microscopy (SEM/TEM). The obtained carbons exhibit a high specific surface area up to 1801 m2 g−1 with a robust porous graphitic carbon layer structure, which provides the merits for potential application in energy storage and dye removal. We carried out potentiostatic and galvanostatic measurements using a three-electrode cell in 1.0 M H2SO4 aqueous electrolyte and achieved a specific capacitance of 118, 109.5, 101.7, 93.6, and 91.2 F g−1 at 1, 2, 4, 8 and 12 A g−1, respectively. The stability at 12 A g−1 was tested to reach 10,000 cycles with capacity retention of around 97.4%. We have demonstrated that the paper flower-derived carbons at activation temperature 800 °C (PFC-800) can be used as a promising electrode material in supercapacitor. PFC-800 can also serve as an efficient sunset yellow dye removal, showing the maximum adsorption capacity for sunset yellow (Q0, 273.6 mg g−1). Keywords: Porous carbon, Supercapacitor, Adsorption, Sunset yellow, Adsorption capacity
Keywords	Chemistry ; QD1-999
Subject code	620
Language	English
Publishing date	2020-01-01T00:00:00Z
Publisher	Elsevier
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: Cation exchange synthesis of NiₓCo₍₃₋ₓ₎O₄ (x = 1.25) nanoparticles on aminated carbon nanotubes with high catalytic bifunctionality for the oxygen reduction/evolution reaction toward efficient Zn–air batteries

Chen, Bohong / Zhongqing Jiang / Jianlin Huang / Binglu Deng / Lingshan Zhou / Zhong-Jie Jiang / Meilin Liu

Journal of materials chemistry. 2018 May 22, v. 6, no. 20

2018

Abstract: Proper control of the size and composition distribution and oxidation state of metal ions is of great importance to develop mixed transition metal oxides with advanced catalytic activities for oxygen reduction (ORR) and evolution reactions (OER), both of ...

Abstract	Proper control of the size and composition distribution and oxidation state of metal ions is of great importance to develop mixed transition metal oxides with advanced catalytic activities for oxygen reduction (ORR) and evolution reactions (OER), both of which are pivotal processes related to many renewable energy related technologies. Herein, a cation exchange reaction is employed for the synthesis of NiₓCo₍₃₋ₓ₎O₄ nanoparticles (NPs) supported on aminated carbon nanotubes (NiₓCo₍₃₋ₓ₎O₄/NH₂-CNTs). The obtained NiₓCo₍₃₋ₓ₎O₄/NH₂-CNTs shows an enhanced catalytic bifunctionality for the ORR and OER. Specifically, the NiₓCo₍₃₋ₓ₎O₄/NH₂-CNTs can deliver ORR onset (Eₒₙₛₑₜ) and half-wave potentials (E₁/₂) of 0.954 and 0.863 V vs. RHE, respectively, and only needs an overpotential of 386 mV to deliver a current density of 10 mA cm⁻². The ORR catalytic activity of the NiₓCo₍₃₋ₓ₎O₄/NH₂-CNTs is comparable to that of the Pt/C (with an Eₒₙₛₑₜ and E₁/₂ of 0.964 and 0.858 V vs. RHE, respectively), while its OER activity is higher than that of RuO₂/C. Additionally, the NiₓCo₍₃₋ₓ₎O₄/NH₂-CNTs exhibits a potential difference of 0.764 V in the OER current density at 10 mA cm⁻² and the ORR current density at 3 mA cm⁻², which is lower than those of most state-of-the-art catalysts. Most interestingly, the Zn–air battery with the NiₓCo₍₃₋ₓ₎O₄/NH₂-CNTs shows higher durability and performance than the batteries with Pt–RuO₂/C (an integrated catalyst consisting of Pt/C and RuO₂/C). These results clearly demonstrate that the NiₓCo₍₃₋ₓ₎O₄/NH₂-CNTs is a durable and efficient bifunctional catalyst with great potential for practical applications.
Keywords	batteries ; carbon nanotubes ; catalysts ; catalytic activity ; cation exchange ; durability ; metal ions ; nanoparticles ; oxidation ; oxides ; oxygen ; renewable energy sources
Language	English
Dates of publication	2018-0522
Size	p. 9517-9527.
Publishing place	The Royal Society of Chemistry
Document type	Article
ZDB-ID	2702232-8
ISSN	2050-7496 ; 2050-7488
ISSN (online)	2050-7496
ISSN	2050-7488
DOI	10.1039/c8ta01177j
Database	NAL-Catalogue (AGRICOLA)

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Article: Graphene oxide assisted template-free synthesis of nanoscale splode-like NiCo2O4 hollow microsphere with superior lithium storage properties

Rong, Haibo / Fu Wang / Si Cheng / Xiaoning Tian / Yanmin Qin / Zhong-Jie Jiang / Zhongqing Jiang

Journal of colloid and interface science. 2018 Feb. 01, v. 511

2018

Abstract: A facile template-free Ostwald ripening method is developed for the preparation of the reduced graphene oxide supported splode-like NiCo2O4 hollow microsphere (SNHM/rGO). The graphene oxide used in the reaction mixture is found to play a crucial role in ... ...

Abstract	A facile template-free Ostwald ripening method is developed for the preparation of the reduced graphene oxide supported splode-like NiCo2O4 hollow microsphere (SNHM/rGO). The graphene oxide used in the reaction mixture is found to play a crucial role in the formation of the SNHM/rGO. It promotes the formation of the NiCo-glycerol microspheres suitable for the Ostwald ripening to form the reduced graphene oxide supported hollow NiCo-glycerol microspheres, which is important for the subsequent calcination to form the SNHM/rGO. The obtained SNHM/rGO shows a great promise as the anode for lithium-ion batteries and can deliver a stable reversible capacity of 1048.1 mA h g−1 at the current density of 100 mA g−1. The performance of the SNHM/rGO is much higher than that of most NiCo2O4-based materials reported previously, strongly suggesting that the SNHM/rGO could be used as the anode for practical applications. This is well supported by the higher performance of the LiCoO2//SNHM−rGO full cell. The excellent electrochemical performance can be attributed to the specific structure of the SNHM/rGO, which comprises the splode-like hollow NiCo2O4 microspheres with the reduced graphene oxide integrated.
Keywords	anodes ; electrochemistry ; graphene oxide ; lithium ; lithium batteries ; microparticles ; Ostwald ripening
Language	English
Dates of publication	2018-0201
Size	p. 119-127.
Publishing place	Elsevier Inc.
Document type	Article
ZDB-ID	241597-5
ISSN	1095-7103 ; 0021-9797
ISSN (online)	1095-7103
ISSN	0021-9797
DOI	10.1016/j.jcis.2017.09.114
Database	NAL-Catalogue (AGRICOLA)

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Article: Changes in Physicochemical, Structural, and Sensory Properties of Irradiated Brown Japonica Rice during Storage

Chen, Yinji / Weixin Jiang / Zhongqing Jiang / Xia Chen / Jun Cao / Wen Dong / Bingye Dai

Journal of agricultural and food chemistry. 2015 May 6, v. 63, no. 17

2015

Abstract: Brown japonica rice was treated with 60Co Î³ irradiation at doses of 0, 0.2, 0.5, 1.0, and 2.0 kGy immediately after harvesting. The effects of irradiation on physicochemical, structural, and sensory properties during long-term storage (18 months) were ... ...

Abstract	Brown japonica rice was treated with 60Co Î³ irradiation at doses of 0, 0.2, 0.5, 1.0, and 2.0 kGy immediately after harvesting. The effects of irradiation on physicochemical, structural, and sensory properties during long-term storage (18 months) were investigated. The study revealed that the pasting properties, including peak, through, breakdown, final, and setback viscosities, decrease considerably in a dose-dependent manner and vary differently during 18 months of storage. Irradiation reduced the free fatty acid (FFA) content in comparison with unirradiated brown rice with long-term storage (from 12 to 18 months). Scanning electron microscope (SEM) observation showed that the mean range and shape of starch granules did not vary significantly. However, dark spots developed among starch granules and the narrow cracks became wider with increasing irradiation dose and storage time. During sensory evaluation, extremely low scores for odor and overall acceptability were obtained for medium-dose irradiated rice (1.0 and 2.0 kGy); however, no significant difference was found in acceptability between low-dose irradiated rice (0.2 and 0.5 kGy) and the control rice (0 kGy). Overall, low-dose (0.5 kGy or below) irradiation seems to be a promising alternative treatment to increase brown rice shelf life, without affecting the physicochemical and structural characteristics and sensory acceptability.
Keywords	brown rice ; cobalt ; dose response ; free fatty acids ; gamma radiation ; harvesting ; irradiation ; odors ; pasting properties ; physicochemical properties ; radionuclides ; scanning electron microscopes ; scanning electron microscopy ; sensory evaluation ; shelf life ; starch granules ; storage ; storage time ; viscosity
Language	English
Dates of publication	2015-0506
Size	p. 4361-4369.
Publishing place	American Chemical Society, Books and Journals Division
Document type	Article
ZDB-ID	241619-0
ISSN	1520-5118 ; 0021-8561
ISSN (online)	1520-5118
ISSN	0021-8561
DOI	10.1021/jf5047514
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Time pressure inhibits dynamic advantage in the classification of facial expressions of emotion.

Zhongqing Jiang / Wenhui Li / Guillermo Recio / Ying Liu / Wenbo Luo / Doufei Zhang / Dan Sun

PLoS ONE, Vol 9, Iss 6, p e

2014 Volume 100162

Abstract: Recent studies suggest an advantage in the recognition of dynamic over static facial expressions of emotion. Here, we explored the differences in the processing of static and dynamic faces under condition of time pressure. A group of 18 participants ... ...

Abstract	Recent studies suggest an advantage in the recognition of dynamic over static facial expressions of emotion. Here, we explored the differences in the processing of static and dynamic faces under condition of time pressure. A group of 18 participants classified static and dynamic facial expressions (angry, happy, and neutral). In order to increase the goal-directed attention, instructions emphasized speed and announced time pressure in the interval for the response (maximal 600 ms). Participants responded faster and more accurately in the static than in the dynamic condition. Event-related potentials (ERPs) showed larger amplitude of the P1 (90-130 ms) and LPC (300-600 ms) components for dynamic relative to static stimuli, indicating enhanced early visual processing and emotional attention. On the other hand, the N170 was more negative in static relative to dynamic faces, suggesting better structural encoding for static faces under time pressure. The present study shows some advantages in the processing of static over dynamic facial expressions of emotion when the top-down (goal-driven) attention is strengthened.
Keywords	Medicine ; R ; Science ; Q
Subject code	150
Language	English
Publishing date	2014-01-01T00:00:00Z
Publisher	Public Library of Science (PLoS)
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: Zwitterion threaded metal–organic framework membranes for direct methanol fuel cells

Guo, Yi / Zhongqing Jiang / Xiaobin Wang / Wen Ying / Danka Chen / Sihang Liu / Shengfu Chen / Zhong-jie Jiang / Xinsheng Peng

Journal of materials chemistry. 2018 Oct. 16, v. 6, no. 40

2018

Abstract: Selective ion transportation membranes are a crucial component of energy storage and conversion devices. Herein, we report the fabrication of a zwitter-MOF membrane by threading zwitterion sulfobetaine methacrylate (SBMA) through a ZIF-8 membrane. The ... ...

Abstract	Selective ion transportation membranes are a crucial component of energy storage and conversion devices. Herein, we report the fabrication of a zwitter-MOF membrane by threading zwitterion sulfobetaine methacrylate (SBMA) through a ZIF-8 membrane. The SBMA were encapsulated into ZIF-8 membranes by a self-confined growing method. The sulfonate and quaternary ammonium (QA) groups on SBMA generate hydrogen-bond networks in MOF channels as ion transporting pathways for cations and anions, respectively. The as-prepared poly-SBMA@ZIF-8 (pSZ) membrane presents both high proton and hydroxide conductivity, respectively. Apart from fast ion transportation, the pSZ membrane exhibits efficient blocking of the methanol crossover for direct methanol fuel cells (DMFCs) due to the well-intergrown morphology and size sieving of the ZIF-8 membranes. It is the first report of a zwitter-MOF membrane with high conductivity of both proton and hydroxide ions. Furthermore, the DMFCs assembled by the pSZ membranes exhibit a good performance in not only an acid system but also in an alkaline system. It shows the enormous potential of MOF-based membranes for application in DMFCs.
Keywords	anions ; cations ; coordination polymers ; energy ; fuel cells ; hydrogen bonding ; ion transport ; methanol ; sieving ; sulfobetaine ; sulfonates ; zwitterions
Language	English
Dates of publication	2018-1016
Size	p. 19547-19554.
Publishing place	The Royal Society of Chemistry
Document type	Article
ZDB-ID	2702232-8
ISSN	2050-7496 ; 2050-7488
ISSN (online)	2050-7496
ISSN	2050-7488
DOI	10.1039/c8ta08013e
Database	NAL-Catalogue (AGRICOLA)

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