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Herrero OM, Alvarez HM. Fruit residues as substrates for single-cell oil production by Rhodococcus species: physiology and genomics of carbohydrate catabolism. World J Microbiol Biotechnol 2024; 40:61. [PMID: 38177966 DOI: 10.1007/s11274-023-03866-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 12/03/2023] [Indexed: 01/06/2024]
Abstract
Strains belonging to R. opacus, R. jostii, R. fascians, R. erythropolis and R. equi exhibited differential ability to grow and produce lipids from fruit residues (grape marc and apple pomace), as well as single carbohydrates, such as glucose, gluconate, fructose and sucrose. The oleaginous species, R. opacus (strains PD630 and MR22) and R. jostii RHA1, produced higher yields of biomass (5.1-5.6 g L-1) and lipids (38-44% of CDW) from apple juice wastes, in comparison to R. erythropolis DSM43060, R. fascians F7 and R. equi ATCC6939 (4.1-4.3 g L-1 and less than 10% CDW of lipids). The production of cellular biomass and lipids were also higher in R. opacus and R. jostii (6.8-7.2 g L-1 and 33.9-36.5% of CDW of lipids) compared to R. erythropolis, R. fascians, and R. equi (3.0-3.6 g L-1 and less than 10% CDW of lipids), during cultivation of cells on wine grape waste. A genome-wide bioinformatic analysis of rhodococci indicated that oleaginous species possess a complete set of genes/proteins necessary for the efficient utilization of carbohydrates, whereas genomes from non-oleaginous rhodococcal strains lack relevant genes coding for transporters and/or enzymes for the uptake, catabolism and assimilation of carbohydrates, such as gntP, glcP, edd, eda, among others. Results of this study highlight the potential use of the oleaginous rhodococcal species to convert sugar-rich agro-industrial wastes, such as apple pomace and grape marc, into single-cell oils.
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Affiliation(s)
- O Marisa Herrero
- Instituto de Biociencias de la Patagonia (INBIOP), Universidad Nacional de la Patagonia San Juan Bosco y CONICET, Km 4-Ciudad Universitaria, 9000, Comodoro Rivadavia, Chubut, Argentina
| | - Héctor M Alvarez
- Instituto de Biociencias de la Patagonia (INBIOP), Universidad Nacional de la Patagonia San Juan Bosco y CONICET, Km 4-Ciudad Universitaria, 9000, Comodoro Rivadavia, Chubut, Argentina.
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Ghalandari V, Smith H, Volpe M, Messineo A, Reza T. Effect of Acidic Hydrochar on Plastic Crude Oil Produced from Hydrothermal Liquefaction of Waste PVC. Processes (Basel) 2022; 10:2538. [DOI: 10.3390/pr10122538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
In this study, the effect of hydrothermal liquefaction (HTL) of waste PVC was investigated in the presence of acidic hydrochar. The hydrochar was prepared by hydrothermal carbonization of pineapple waste at 250 °C and at 1 h in the presence of citric acid. Hydrochar was acidic, stable, and porous and contained acidic functional groups. Hydrochar was co-fed with PVC during HTL to enhance HTL conversion and quality of the plastic crude oil. HTL experiments were performed at 300–350 °C, 0.25–4 h of reaction times, and 0–20 wt% hydrochar-to-PVC ratio. The plastic crude oil was separated from the solid residue to evaluate HTL conversion and to analyze elemental compositions, boiling point distribution, alteration of chemical bonds, and chemical compositions. The results showed that acidic hydrochar enhances HTL conversion with a maximum value of 28.75 at 5 wt% hydrochar content at 350 °C and 0.5 h. Furthermore, plastic crude oils contained no chloride but contained significantly high carbon and hydrogen, resulting in a higher heating value of up to 36.43 MJ/kg. The major component of the plastic crude oil was 3, 5 dimethylphenol produced ranging from 61.4 to 86.4% (percentage of total identified area) according to gas chromatography mass spectroscopy (GCMS) data.
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Jeong GT. Valorization of microalgae into 5-hydroxymethylfurfural by two-step conversion with ferric sulfate. J Environ Manage 2021; 293:112919. [PMID: 34089958 DOI: 10.1016/j.jenvman.2021.112919] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 04/26/2021] [Accepted: 05/07/2021] [Indexed: 06/12/2023]
Abstract
Microalgae are known as renewable, potential, and sustainable feedstocks for biofuel production. The present work investigated the efficient valorization of green microalgae Chlorella sp. to produce sugars and 5-hydroxymethylfurfural (5-HMF) using thermochemical conversion with a metal-salt (ferric sulfate) as catalyst using a statistical approach and two-step conversion. A statistical approach with a Box-Behnken design was introduced to optimize the conversion for producing sugars. As a result of optimization, 86.46% sugar yield (68.32% glucose yield) was achieved under the condition of 5% biomass and 0.6 g-catalyst/g-biomass at 155 °C and 40 min. Two-step thermochemical conversion was introduced to produce 5-HMF from microalgae. In the first step, sugars were produced from the above optimum condition; in the second step, sugar hydrolysates were converted into 5-HMF by thermochemical conversion without an additional catalyst. In two-step conversion, the maximum 5-HMF yield (37.23%) was achieved at 170 °C and 60 min from the sugar hydrolysate of microalgae obtained from the first-step thermochemical conversion with ferric sulfate. In conclusion, the microalgae as biomass and ferric sulfate as catalyst have availability and the potential to produce biosugars and platform chemicals.
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Affiliation(s)
- Gwi-Taek Jeong
- Department of Biotechnology, Pukyong National University, Busan, 48513, Republic of Korea.
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Shen Z, Gao Y, Kong L, Gu M, Xia M, Dong W, Zhang W, Zhou X, Zhang Y. Selective Conversion of Scenedesmus into Lactic Acid over Amine-Modified Sn-β. ACS Omega 2021; 6:284-293. [PMID: 33458480 PMCID: PMC7807806 DOI: 10.1021/acsomega.0c04561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Accepted: 12/02/2020] [Indexed: 06/12/2023]
Abstract
Amine-modified Sn-β was synthesized to improve the yield of lactic acid produced from Scenedesmus. After studying the growth of Scenedesmus, we selected Scenedesmus with the highest sugar content of 46.7% after 8 days of culture as the reaction substrate. The results showed that the yield of lactic acid from Scenedesmus was greatly increased after being catalyzed by 3-aminopropyltrimethoxysilane (APTMS)-modified Sn-β. After the pretreatment of Scenedesmus in an ice bath ultrasound, under the optimal reaction conditions (190 °C and 5 h), the yield of lactic acid reached the highest (37%). The acid-base characterization results of the catalyst confirmed that there are both Lewis acidic sites and medium-strength basic sites in the catalyst. Both of these sites can promote the hydrolysis of Scenedesmus, while the Lewis acidic sites can promote the production of lactic acid and the basic sites can effectively inhibit the production of the byproduct 5-hydroxymethylfurfural (HMF). This study proved that this amination catalyst is a useful strategy to increase the yield of lactic acid.
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Affiliation(s)
- Zheng Shen
- State Key Laboratory of Pollution
Control and Resources Reuse, Key Laboratory of Yangtze River Water
Environment of MOE, National Engineering Research Center of Protected
Agriculture, Shanghai Engineering Research Center of Protected Agriculture, Tongji University, Shanghai 200092, China
| | - Yishan Gao
- State Key Laboratory of Pollution
Control and Resources Reuse, Key Laboratory of Yangtze River Water
Environment of MOE, National Engineering Research Center of Protected
Agriculture, Shanghai Engineering Research Center of Protected Agriculture, Tongji University, Shanghai 200092, China
| | - Ling Kong
- State Key Laboratory of Pollution
Control and Resources Reuse, Key Laboratory of Yangtze River Water
Environment of MOE, National Engineering Research Center of Protected
Agriculture, Shanghai Engineering Research Center of Protected Agriculture, Tongji University, Shanghai 200092, China
| | | | | | | | - Wei Zhang
- State Key Laboratory of Pollution
Control and Resources Reuse, Key Laboratory of Yangtze River Water
Environment of MOE, National Engineering Research Center of Protected
Agriculture, Shanghai Engineering Research Center of Protected Agriculture, Tongji University, Shanghai 200092, China
| | - Xuefei Zhou
- State Key Laboratory of Pollution
Control and Resources Reuse, Key Laboratory of Yangtze River Water
Environment of MOE, National Engineering Research Center of Protected
Agriculture, Shanghai Engineering Research Center of Protected Agriculture, Tongji University, Shanghai 200092, China
| | - Yalei Zhang
- State Key Laboratory of Pollution
Control and Resources Reuse, Key Laboratory of Yangtze River Water
Environment of MOE, National Engineering Research Center of Protected
Agriculture, Shanghai Engineering Research Center of Protected Agriculture, Tongji University, Shanghai 200092, China
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Sim GY, Lee SU, Lee JW. Enhanced extraction of phytic acid from rice hulls with enzymatic treatment and production of ethanol from reducing sugars in hydrolyzed rice hulls after extraction of phytic acid. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2020.110111] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Bader AN, Sanchez Rizza L, Consolo VF, Curatti L. Efficient saccharification of microalgal biomass by Trichoderma harzianum enzymes for the production of ethanol. ALGAL RES 2020. [DOI: 10.1016/j.algal.2020.101926] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Nie C, Jiang L, Hou Q, Yang Z, Yu Z, Pei H. Heuristic Optimization of Culture Conditions for Stimulating Hyper-Accumulation of Biomass and Lipid in Golenkinia SDEC-16. Energies 2020; 13:964. [DOI: 10.3390/en13040964] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Overproduction of biomass and hyper-accumulation of lipids endow microalgae with promising characteristics to realize the cost-effective potential of advanced bioenergy. This study sought to heuristically optimize the culture conditions on a rarely reported Golenkinia sp. The results indicate that Golenkinia SDEC-16 can withstand the strong light intensity and grow in a modified BG11 medium. The optimal culture conditions for the favorable tradeoff between biomass and lipid accumulation were suggested as follows, 25,000 lux of light intensity, 9 mM of initial nitrogen concentration, and 20 mM of initial sodium chloride concentration. Under these conditions, the biomass concentration and productivity reached 6.65 g/L and 545 mg/L/d, and the synchronous lipid content and productivity reached 54.38% and 296.39 mg/L/d. Hypersalinity significantly promoted lipid contents at the cost of biomass and resulted in an increase of cell size but loss of spines of Golenkinia SDEC-16. The results shed new light on optimizing biomass and lipid productivity.
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Joo HW, Ryu H, Chang YK. Hydrolysis of Golenkinia sp. by Using a Rotating Packed Bed Reactor and Regeneration of Solid Acid Catalyst. BIOTECHNOL BIOPROC E 2020. [DOI: 10.1007/s12257-019-0417-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Alam MA, Yuan T, Xiong W, Zhang B, Lv Y, Xu J. Process optimization for the production of high-concentration ethanol with Scenedesmus raciborskii biomass. Bioresour Technol 2019; 294:122219. [PMID: 31610487 DOI: 10.1016/j.biortech.2019.122219] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Revised: 09/26/2019] [Accepted: 09/27/2019] [Indexed: 06/10/2023]
Abstract
Scenedesmus raciborskii WZKMT was subjected to fed-batch enzymatic hydrolysis and fermentation to facilitate the saccharification of high-solid-loading substrate for high-concentration ethanol. In this work, process factors affecting enzymatic hydrolysis, including enzyme loading, temperature, pH, and solid loading, were optimized. Results showed that 58.03 g L-1 glucose, 12.57 g L-1 xylose, and 1.45 g L-1 cellobiose were obtained after the enzymatic hydrolysis of 330 g L-1 substrates under the optimal conditions of 30 FPU g-1 enzyme loading, 50 °C, and pH 5.5. Meanwhile, 89.60% yield and 30.43 g L-1 content of ethanol were obtained after the fermentation of 330 g L-1 hydrolysate. The maximum ethanol concentration of 79.38 g L-1 could be achieved through repeated fed-batch process, indicating that S. raciborskii WZKMT is a promising feedstock for ethanol production.
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Affiliation(s)
- Md Asraful Alam
- School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Tao Yuan
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, Guangdong, China
| | - Wenlong Xiong
- School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Beixiao Zhang
- School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Yongkun Lv
- School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Jingliang Xu
- School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China; Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, Guangdong, China.
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Park JH, Choi MA, Kim YJ, Kim YC, Chang YK, Jeong KJ. Engineering of Klebsiella oxytoca for production of 2,3-butanediol via simultaneous utilization of sugars from a Golenkinia sp. hydrolysate. Bioresour Technol 2017; 245:1386-1392. [PMID: 28601394 DOI: 10.1016/j.biortech.2017.05.111] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 05/17/2017] [Accepted: 05/18/2017] [Indexed: 06/07/2023]
Abstract
The Klebsiella oxytoca was engineered to produce 2,3-butanediol (2,3-BDO) simultaneously utilizing glucose and galactose obtained from a Golenkinia sp. hydrolysate. For efficient uptake of galactose at a high concentration of glucose, Escherichia coli galactose permease (GalP) was introduced, and the expression of galP under a weak-strength promoter resulted in simultaneous consumption of galactose and glucose. Next, to improve the sugar consumption, a gene encoding methylglyoxal synthase (MgsA) known as an inhibitor of multisugar metabolism was deleted, and the mgsA-null mutant showed much faster consumption of both sugars than the wild-type strain did. Finally, we demonstrated that the engineered K. oxytoca could utilize sugar extracts from a Golenkinia sp. hydrolysate and successfully produces 2,3-BDO.
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Affiliation(s)
- Jong Hyun Park
- Department of Chemical and Biomolecular Engineering, BK21 Plus Program, KAIST, 291 Daehak-ro Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Min Ah Choi
- Department of Chemical and Biomolecular Engineering, BK21 Plus Program, KAIST, 291 Daehak-ro Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Yong Jae Kim
- Department of Chemical and Biomolecular Engineering, BK21 Plus Program, KAIST, 291 Daehak-ro Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Yeu-Chun Kim
- Department of Chemical and Biomolecular Engineering, BK21 Plus Program, KAIST, 291 Daehak-ro Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Yong Keun Chang
- Department of Chemical and Biomolecular Engineering, BK21 Plus Program, KAIST, 291 Daehak-ro Yuseong-gu, Daejeon 34141, Republic of Korea; Advanced Biomass R&D Center (ABC), 291 Daehak-ro Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Ki Jun Jeong
- Department of Chemical and Biomolecular Engineering, BK21 Plus Program, KAIST, 291 Daehak-ro Yuseong-gu, Daejeon 34141, Republic of Korea; Advanced Biomass R&D Center (ABC), 291 Daehak-ro Yuseong-gu, Daejeon 34141, Republic of Korea; Institutes for the BioCentury (KIB), KAIST, 291 Daehak-ro Yuseong-gu, Daejeon 34141, Republic of Korea.
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Duangkaew P, Inoue S, Aki T, Nakashimada Y, Okamura Y, Tajima T, Matsumura Y. Real-Time Mass Spectrometric Analysis of Hydrothermal Reaction Products. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b02663] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Pattasuda Duangkaew
- Department
of Mechanical Science and Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, 739-8527 Japan
| | - Shuhei Inoue
- Department
of Mechanical Science and Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, 739-8527 Japan
| | - Tsunehiro Aki
- Department
of Molecular Biotechnology, Graduate School of Advanced Sciences of
Matter, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, 739-8530 Japan
| | - Yutaka Nakashimada
- Department
of Molecular Biotechnology, Graduate School of Advanced Sciences of
Matter, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, 739-8530 Japan
| | - Yoshiko Okamura
- Department
of Molecular Biotechnology, Graduate School of Advanced Sciences of
Matter, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, 739-8530 Japan
| | - Takahisa Tajima
- Department
of Molecular Biotechnology, Graduate School of Advanced Sciences of
Matter, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, 739-8530 Japan
| | - Yukihiko Matsumura
- Department
of Mechanical Science and Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, 739-8527 Japan
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Yuan T, Li X, Xiao S, Guo Y, Zhou W, Xu J, Yuan Z. Microalgae pretreatment with liquid hot water to enhance enzymatic hydrolysis efficiency. Bioresour Technol 2016; 220:530-536. [PMID: 27614155 DOI: 10.1016/j.biortech.2016.08.117] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 08/30/2016] [Accepted: 08/31/2016] [Indexed: 06/06/2023]
Abstract
Nowadays, microalgae are being considered as promising raw material for bioethanol production. In this work, three process variables during liquid hot water (LHW) pretreatment prior to enzymatic hydrolysis by response surface methodology on Scenedesmus sp. WZKMT were investigated to enhance glucose recovery. Results indicated that the order of significance for three parameters was temperature>solid-to-liquid ratio>time. The optimal condition was 1:13 (w/v), 147°C and 40min. The concentration and recovery of glucose under this condition were 14.223g·L(-1) and 89.32%, respectively, which were up to 5-fold higher than the samples without LHW pretreatment. In addition, the surface morphologies of microalgae cells before and after LHW pretreatment were also verified using scanning electron microscopy (SEM). LHW pretreatment can greatly enhance the enzymatic efficiency, and can be regarded as an ideal pretreatment method for glucose recovery from microalgae.
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Affiliation(s)
- Tao Yuan
- Guangzhou Institute of Energy Conversion, Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou 510640, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiekun Li
- Guangzhou Institute of Energy Conversion, Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou 510640, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shiyuan Xiao
- Guangzhou Institute of Energy Conversion, Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou 510640, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ying Guo
- Guangzhou Institute of Energy Conversion, Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Weizheng Zhou
- Guangzhou Institute of Energy Conversion, Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Jingliang Xu
- Guangzhou Institute of Energy Conversion, Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou 510640, China.
| | - Zhenhong Yuan
- Guangzhou Institute of Energy Conversion, Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou 510640, China
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