2019
DOI: 10.1021/acsami.9b06596
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Abstract: Efficient nitrogen fixation under ambient conditions is an exigent task in both basic research and industrial applications. Recently, reduction of N2 to NH3 based on photocatalysis and/or electrocatalysis offers a possible route to the typical Haber–Bosch process. However, achieving a high yield of N2 reduction reaction (NRR) is still a challenging goal because of the limitations of efficient catalysts. Herein, we propose a photoelectrochemical NRR route based on the rational design of MoS2@TiO2 semiconductor … Show more

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Cited by 123 publications
(102 citation statements)
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“…This outstanding performance can be attributed to excellent lightharvesting management, fast photoelectron transfer from Si photocathode to Au/PCN, and efficient NRR at Au/PCN catalytic surface where N 2 molecules were trapped by porous and N-defective sites. On the other hand, at the applied potential of 0 V versus RHE, a low FE of 12.5% is obtained, this might be due to the low rate of HER, which can limit the availability [18,19,57,58] of H + ions for N 2 to NH 3 conversion as H + ions also vital for efficient NRR. [25] Tafel slope for PEC NRR under N 2 saturation was also calculated (Figure S18, Supporting Information), and the high Tafel slope of 83 mV dec −1 indicates the Volmer-Heyrovsky mechanism, which means the poor HER reaction kinetics of fabricated photocathode.…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…This outstanding performance can be attributed to excellent lightharvesting management, fast photoelectron transfer from Si photocathode to Au/PCN, and efficient NRR at Au/PCN catalytic surface where N 2 molecules were trapped by porous and N-defective sites. On the other hand, at the applied potential of 0 V versus RHE, a low FE of 12.5% is obtained, this might be due to the low rate of HER, which can limit the availability [18,19,57,58] of H + ions for N 2 to NH 3 conversion as H + ions also vital for efficient NRR. [25] Tafel slope for PEC NRR under N 2 saturation was also calculated (Figure S18, Supporting Information), and the high Tafel slope of 83 mV dec −1 indicates the Volmer-Heyrovsky mechanism, which means the poor HER reaction kinetics of fabricated photocathode.…”
Section: Resultsmentioning
confidence: 99%
“…h) Comparison chart of FE with existing PEC NRR catalytic systems with present Au/PCN/ n + np + ‐ Si photocathode. [ 18,19,57,58 ]…”
Section: Resultsmentioning
confidence: 99%
“…[ 3 ] Recently, photoelectrochemical (PEC) techniques combining photochemical and electrochemical processes have been proposed to produce ammonia. [ 4 ] Various PEC cells have been installed based on diverse materials, including gold nanoparticles modified semiconductors, [ 5 ] H‐terminated B‐doped diamond, [ 6 ] and oxygen vacancies in BiOI. [ 7 ] The PEC cells usually have higher efficiency than photocatalytic ones due to charge separation caused by the external field.…”
Section: Introductionmentioning
confidence: 99%
“…[ 9 ] However, the conventional PEC electrode materials often contain noble metals and the fabrication process is generally quite complicated. [ 4 ] Hence, efficient and noble‐metal‐free electrode materials are the key to PEC synthesis of ammonia. [ 10 ]…”
Section: Introductionmentioning
confidence: 99%
“…The broad bandgap and fast recombination of the photoexcited charge carriers of TiO 2 severely reduce its utilization of light 94 . Creating TiO 2 ‐based heterostructures are an effective method to solve these problems, because heterostructures can induce spatial separation of charge carriers and increase the absorption of light 95–97 . Obviously, TiO 2 ‐based type‐II (with a staggered gap) heterostructures are effective for boosting photocatalytic NRR activity because of its appropriate band structure for charge separation.…”
Section: Advances In the Design And Synthesis Of Tio2‐based Catalysts For Nrrmentioning
confidence: 99%