"introduced sanctions" is correct and usable in written English.
You can use it whenever you need to refer to the act of imposing a penalty on someone or something. For example, "The government introduced sanctions against the trading company for numerous violations of environmental regulations."
In 1986, the United States enacted the world's largest legalization program for unauthorized foreigners and introduced sanctions on employers who knowingly hired illegal foreign workers.
Since then America has introduced sanctions that target Iran's central bank, the country's main conduit for oil transactions, by penalising any foreign financial institutions doing business with it.
Austria immediately began paying the price of a government involving Haider - the man who had praised Hitler's policies - as Europe introduced sanctions.
Since the Clinton administration introduced sanctions against the Iranian missile and arms industries, Iran has developed the largest missile arsenal in the Middle East and has become an arms exporter.
The G7 meeting became a focus largely because of the impossibility of getting measures through the UN security council; in February China and Russia vetoed a motion on chemical weapons that would have introduced sanctions against Syrian military individuals and banned the sale or supply of helicopters, used to drop barrel bombs containing chlorine.
The move comes after the EU and US introduced sanctions over Russia's annexation of Crimea and actions in eastern Ukraine.
The EU is (finally, Ukrainians gasp) introducing sanctions.
We cut off fuel oil and introduce sanctions.
The UN security council will have an urgent meeting that will introduce sanctions targeting North Korea.
Mr. Trump asserted that relations with the kingdom were "excellent," and that he did not have plans to introduce sanctions.
In an interview with the Guardian in February, Nasheed called on the international community to consider introducing sanctions against the current government.
