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PubMed Publications| Keyword search (4,163 papers available) |  |
"Wang L" Authored Publications:
| Title: | Direct ammonia and dihydroxyacetone production in an unbiased photoelectrochemical cell | ||||
| Authors: | Guo X, Gao RT, Ren S, Nguyen NT, Chen H, Wu L, Wang L | ||||
| Link: | https://pubmed.ncbi.nlm.nih.gov/40617832/ | ||||
| DOI: | 10.1038/s41467-025-61080-x | ||||
| Publication: | Nature communications | ||||
| Keywords: | |||||
| PMID: | 40617832 | Category: | Date Added: | 2025-07-06 | |
| Dept Affiliation: |
ENCS
1 College of Chemistry and Chemical Engineering, College of Energy Material and Chemistry, Inner Mongolia Key Laboratory of Low Carbon Catalysis, Inner Mongolia University, Hohhot, 010021, China. 2 College of Chemistry and Chemical Engineering, College of Energy Material and Chemistry, Inner Mongolia Key Laboratory of Low Carbon Catalysis, Inner Mongolia University, Hohhot, 010021, China. gao-ruiting@imu.edu.cn. 3 Department of Chemical and Materials Engineering, Gina Cody School of Engineering and Computer Science, Concordia University, Montreal, QC, H3G 2W1, Canada. 4 College of Chemistry and Chemical Engineering, College of Energy Material and Chemistry, Inner Mongolia Key Laboratory of Low Carbon Catalysis, Inner Mongolia University, Hohhot, 010021, China. wlm@imu.edu.cn. 5 Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200433, China. wlm@imu.edu.cn. 6 College of Chemistry and Chemical Engineering, College of Energy Material and Chemistry, Inner Mongolia Key Laboratory of Low Carbon Catalysis, Inner Mongolia University, Hohhot, 010021, China. wanglei@imu.edu.cn. |
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Description: |
Photoelectrochemical production of ammonia usually suffers from a low solar-to-ammonia efficiency and a high overpotential, which influences the bias-free operation of sustainable photoelectrochemistry. Herein, we realize solar-driven ammonia production from waste nitrate by constructing copper-osmium catalysts deposited on the Sb2(S,Se)3 semiconductor, enabling optimized photo-carrier transport pathways and a beneficial co-adsorption configuration of *NO3-H2O moieties. The photocathode reaches a photocurrent density of 5.6 mA cm-2 at 0 VRHE with a low onset potential of 0.86 VRHE and a Faradaic efficiency of 96.98% at 0.6 VRHE under AM 1.5 G illumination. We further employ glycerol oxidation reaction on ruthenium doped bismuth oxide catalyst decorated on titanium oxide photoanode, requiring an onset potential of 0.3 VRHE to enable bias-free operation. The unbiased photoelectrochemical system shows Faradaic efficiencies of over 97% for ammonia products and above 77% for glycerol oxidation product under AM 1.5 G illumination. The large-sized photoelectrodes maintain a stability for 24 h without noticeable degradation. Our works indicate that unassisted and stable PEC ammonia production is feasible with in situ glycerol valorization using the photoanode and photocathode. |
