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| 1 | A photo-assisted electrochemical-based demonstrator for green ammonia synthesis显示文摘Bridging laboratory research and practical utilization is of crucial importance for the development of green ammonia synthetic technologies. A decentralized photo-assisted electrochemical-based demonstrator has been proposed for green ammonia synthesis from renewable electricity, air and water, where well-known defect-laden WO_(3) is used as the working electrode, and a commercially available PV panel supplies renewable electricity. In this demonstrator, defect-laden WO_(3) exhibits the optimum electrochemical NH_(3) formation rate(4.51 × 10^(-12)mol s^(-1)cm^(-2)) in 0.1 M K_(2)SO_(4)in a photovoltaic electrochemical(PV-EC) system. A system-level energy and cost analysis was conducted to investigate its economic viability and a general evaluation tool for system performance and cost estimation was proposed. This advance enables the possibility of integrating the small-scale green ammonia demonstrator into a stand-alone farm system. | Xiaolu Liu Zhurui Shen Xinyue Peng Lu Tian Ran Hao Lu Wang Yangfan Xu Yuping Liu Christos T.Maravelias Wei Li Geoffrey A.Ozin | 2022 | Journal of Energy Chemistry2022，31，5： | 1 |
| 2 | 核壳结构增强光热逆水煤气变换催化性能显示文摘光热催化逆水煤气变换有望实现完全太阳能驱动条件下,将温室气体CO_(2)和可再生H_(2)转化为重要的化工原料CO.然而现有负载型光热逆水煤气变换催化剂的性能受限于催化剂负载量、分散性、稳定性的相互制约.本文提出了一种核壳结构策略,并以Ni1_(2)P_(5)为例,设计了同时具有强光吸收、高分散度和高稳定性的光热催化剂.获得的Ni1_(2)P_(5)@SiO_(2)核壳结构催化剂在Ni1_(2)P_(5)负载量高达30 wt%时,依然保持了15 nm的较小颗粒尺寸,从而在光热催化逆水煤气变换反应中表现出了更高的活性、接近100%的CO选择性和极佳的稳定性,尤其是在强光照条件下性能更加突出.本研究揭示了核壳策略能有效突破传统负载型催化剂的局限,提高光热催化CO_(2)还原的性能. | 娄德月 朱智杰 徐杨帆 李超然 冯凯 张大科 吕康孝 吴之怡 张城城 Geoffrey A.Ozin 何乐 张晓宏 | 2021 | Science China Materials2021，64，9： | 1 |
| 3 | Uniting Heat and Light in Heterogeneous CO_(2) Photocatalysis:Optochemical Materials and Reactor Engineering显示文摘CONSPECTUS:The rapid increase in atmospheric CO_(2) concentration(∼420 ppm)has become one of the significant issues threatening human survival.As an effective measure to solve this major problem,renewable energy-powered catalytic CO_(2) conversion technologies have received vast attention in both academia and industry.Among these techniques,photothermal catalysis is a rising star with promising potential for CO_(2) conversion even under milder conditions.Indium oxide was among the first to be used in photothermal CO_(2) catalysis,and through its various forms,stoichiometries,and surface chemistry,it has become one of the most well-studied photothermal catalyst systems.Indium oxide is a highly tunable semiconductor for CO_(2) photocatalysis,which can be driven by both light photochemically and heat photothermally,thereby serving as an archetype for understanding how to optimize its performance for storing solar as chemical energy,through creative materials chemistry. | Junchuan Sun Wei Sun Lu Wang Geoffrey A.Ozin | 2022 | Accounts of Materials Research2022，3，12： | 0 |
| 4 | Effect of bicarbonate on CO_(2) electroreduction over cathode catalysts显示文摘CO_(2) electroreduction (CO_(2) ER) using renewable energy is ideal for mitigating the greenhouse effect and closing the carbon cycle. Bicarbonate (HCO_(3)−) is most commonly employed as the electrolyte anion because it is known to facilitate CO_(2) ER. However, its dynamics in the electric double layer remains obscure and requires more in-depth investigation. Herein, we investigate the refined reduction process of bicarbonate by employing in situ attenuated total reflectance surface-enhanced infrared absorption spectroscopy. By comparing the product distributions in Ar-saturated KCl and KHCO_(3) electrolytes, we confirmed CO production from HCO_(3)^(−) in the absence of an external CO_(2) source. Notably, in contrast to an electric compulsion, negatively charged HCO_(3)− anions were found to accumulate near the electrode surface. A reduction mechanism of HCO3− is proposed in that HCO3− is not adsorbed over a catalyst, but may be enriched near the electrode surface and converted to CO_(2) and react over Au and Cu electrodes. The dependence of the CO_(2) ER activity on the local HCO3− concentration was subsequently discovered, which was in turn dependent on the bulk HCO3− concentration and cathodic potential. In particular, the local HCO3− concentration was limited by the cathodic potential, leading to a plateau in the CO_(2) ER activity. The proposed mechanism provides insights into the interaction between the catalyst and the electrolyte in CO_(2) ER. | Wanyu Deng Tenghui Yuan Sai Chen Huimin Li Congling Hu Hao Dong Bo Wu Tuo Wang Jingkun Li Geoffrey A.Ozin Jinlong Gong | 2021 | Fundamental Research2021，1，4： | 0 |
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